ATEX multiline pumps of series RA Operating instructions ......ATEX multiline pumps of series RA....

Version 01

951-180-082-EN

ENOperating instructions according to ATEX Directive 2014/34/EU

ATEX multiline pumps of series RA

Jürgen Kreutzkämper Manager R&D Germany

Stefan Schürmann Manager R&D Hockenheim/Walldorf

EU Declaration of Conformity pursuant to ATEX Directive 2014/34/EU, Annex X

The manufacturer, SKF Lubrication Systems Germany GmbH, Hockenheim Plant, 2. Industriestr. 4, DE - 68766 Hockenheim hereby de-

clares the conformity of the device:

Designation: Multiline pumps

Type: RA...EEX

Part number: 750-***-*

Year of manufacture: See rating plate

Explosion protection marking: II 2G Ex h IIC T4 Gb / II 2D Ex h IIIC T135°C Db

with all essential safety and health requirements of ATEX Directive 2014/34/EU as well as the basic safety and health requirements protec-

tion requirements of Machinery Directive 2006/42/EC specified below at the time of placing on the market.

1.1.2 · 1.1.3 · 1.3.2 · 1.3.4 · 1.5.6· 1.5.8 · 1.5.9 · 1.6.1 · 1.7.1 · 1.7.3 · 1.7.4

The technical documentation pursuant to:

ATEX Directive 2014/34/EU Annex VIII No. 2 has been prepared and filed with the conformity assessment body.

- Machinery Directive 2006/42/EC Annex VII Part B.

We undertake to transmit these in electronic form in response to a reasoned request by the national authorities. The Head of Technical

Standards is the authorized representative for the technical documentation. See the manufacturer information for the address.

Furthermore, the following Directives and (harmonized) standards were applied in the applicable areas:

2014/30/EU EMC Directive | Industrie / 2011/65/EU RoHS II

Standard Edition Standard Edition Standard Edition Standard Edition

EN ISO 80079-36 2016 EN 1127-1 2011 DIN EN 809 2012 EN ISO 12100 2010

EN ISO 80079-37 2016 DIN EN 60204-1 2007 DIN EN 60034-1 2011

The device must not be put into service until the machinery into which it is to be incorporated has been declared in conformity with the

provisions of ATEX Directive 2014/34/EU, Machinery Directive 2006/42/EC, and all other applicable Directives.

Hockenheim, September 17, 2018

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EN EU Declaration of Conformity

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ENMasthead

Training

SKF conducts detailed training in order to

enable the maximum safety and efficiency.

SKF recommends taking advantage of this

training. For information, contact the rel-

evant SKF service address.

Copyright© Copyright SKF

All rights reserved.

WarrantyThe instructions do not contain any infor-mation on the warranty. This can be found in our General Terms and Conditions.

Notes on operating instructions

These operating instructions are operat-

ing instructions in accordance with ATEX

2014/34/EU. The instructions are an in-

tegral part of the described products and

must be kept for future use.

Disclaimer of liability

The manufacturer shall not be held liable for

damage resulting from:

Improper usage, assembly, operation,

configuration, maintenance, repair, or

accidents

Improper reaction to malfunctions

Unauthorized modifications to the

product

Intentional or gross negligence

Use of non-original SKF spare parts

The maximum liability for loss or damage

resulting from the use of our products is

limited to the purchase price. Liability for in-

direct damage of any kind is excluded.

Masthead

Manufacturer SKF Lubrication Systems Germany GmbH

Address of manufacturer plantsHeadquarters

Walldorf Plant

Heinrich-Hertz-Str. 2-8

69190 Walldorf

Germany

Tel: +49 (0) 6227 33-0

Fax: +49 (0) 6227 33-259

Berlin Plant

Motzener Strasse 35/37

12277 Berlin

Germany

Tel. +49 (0)30 72002-0

Fax +49 (0)30 72002-111

Hockenheim Plant

2. Industriestrasse 4

68766 Hockenheim

Germany

Tel. +49 (0)62 05 27-0

Fax +49 (0)62 05 27-101

E-mail: [email protected]

www.skf.com/lubrication

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EN Table of contents

Table of contents

EU Declaration 2

Masthead 3

Explanation of symbols and signs 7

1. Safety instructions 91.1 General safety instructions 91.2 General behavior when handling the product 91.3 Intended use 101.4 Foreseeable misuse 101.5 Painting plastic components 111.6 Modifications to the product 111.7 Prohibition of certain activities 111.8 Inspections prior to delivery 111.9 Referenced documents 111.10 Markings on the product 131.11 Notes on the rating plate 141.12 Note on CE marking 141.13 Persons authorized to use the product 14

1.13.1 Operator 141.13.2 Qualified mechanic 151.13.3 Qualified electrician 151.13.4 Specialist in maintenance and servicing in potentially explosive atmospheres 15

1.14 Instruction of outside fitters 151.15 Provision of personal protective gear 151.16 Operation 151.17 Emergency shutdown 161.18 Transport, assembly, maintenance, malfunction, repair, shutdown, disposal 161.19 First start-up, daily start-up 181.20 Cleaning 18

1.21 Protective and safety mechanisms 181.22 Special safety instructions regarding explosion protection 191.23 Nullification of ATEX approval 211.24 Operation in potentially explosive atmospheres 211.26 Obligations of the operator 22

1.26.1 Identification of hazards 221.26.2 Explosion protection measures 22

1.25 Explosion protection marking 221.26.3 Provision of necessary information 231.26.4 Duty to provide instruction and training 23

1.27 Residual risks 241.28 Residual ATEX risks 25

2. Lubricants 272.1 General information 272.2 Selection of lubricants 272.3 Material compatibility 282.4 Aging of lubricants 282.5 Lubricants in potentially explosive atmospheres 28

3. Overview, functional description 293.1 Assembly 293.2 Functional description 323.3 Operation of the RA multline pump 33

4. Technical data 354.1 Design with rotary drive 35

4.1.1 Rotary, coaxial (RA1UA) 354.1.2 Rotary with coaxial gear (RA2UB) 354.1.3 Rotary with bevel gear (RA3UA) 35

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ENTable of contents

4.1.4 Explanation of order codes for rotary drive (RA1UA) 374.1.5 Explanation of order codes for rotary drive with

coaxial gear (RA2UB) 374.1.6 Explanation of order codes for rotary drive with

bevel gear (RA3UA) 384.2 Design with electric motor drive 39

4.2.1 Electric motor drive, coaxial (RA1M) 394.2.2 Electric motor drive, with coaxial gear (RA2M) 394.2.3 Electric motor drive, with bevel gear (RA3M) 394.2.4 Explanation of orders codes for electric motor drive,

coaxial (RA1M) 434.2.5 Explanation of order codes for electric motor drive with

coaxial gear (RA2M) 444.2.6 Explanation of order codes for electric motor drive with

bevel gear (RA3M) 454.3 Design with rotary drive, with grease reservoir 46

4.3.1 Rotary drive, with bevel gear and grease reservoir (RA...3UA) 464.3.2 Explanation of order codes for rotary drive,

with bevel gear and grease reservoir (RA...3UA) 474.4 Design with electric motor drive, with grease reservoir 48

4.4.1 Electric motor drive, with coaxial gear and grease reservoir (RA...2M) 48

4.4.2 Electric motor drive, with bevel gear and grease reservoir (RA...3M) 48

4.4.3 Explanation of order codes for electric motor drive, with coaxial gear and grease reservoir (RA...2M) 50

4.4.4 Explanation of order codes for electric motor drive, with bevel gear and grease reservoir (RA...3M) 51

4.5 Fill level control 52

4.5.1 Fill level control for grease with changeover function K (E) 524.5.2 Fill level switch with NC/NO function for grease (F) 52

4.6 Tightening torques 52

5. Supply, returns, storage 535.1 Supply 535.2 Return shipment 535.3 Storage 53

5.3.1 Corrosion protection 545.3.2 Special storage conditions for motors 54

6. Assembly 556.1 General information on assembly 556.2 Assembly location 56

6.2.1 Minimum mounting dimensions 566.3 RA oil and grease lubrication pumps 57

6.3.1 Rotary drive, coaxial (RA1UA) 576.3.2 Rotary drive, with coaxial gear (RA2UB) 586.3.3 Rotary drive, with bevel gear (RA3UA) 596.3.4 Electric motor drive, coaxial (RA1M) 606.3.5 Electric motor drive, with coaxial gear (RA2M) 616.3.6 Electric motor drive, with bevel gear (RA3M) 62

6.4 RA grease lubrication pumps with grease reservoir 636.4.1 Rotary drive, with bevel gear and grease reservoir (RA...3UA) 636.4.2 Electric motor drive, with coaxial gear and

grease reservoir (RA...2M) 646.4.3 Electric motor drive, with bevel gear and

grease reservoir (RA...3M) 656.5 Assembly of RA multiline pumps 66

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EN Table of contents

6.5.1 RA rotary drive 666.5.2 RA electric motor drive 67

6.6 Electrical connection 686.6.1 Establish the motor connection 706.6.2 Establishing equipotential bonding connection 71

6.7 Electrical connection of fill level controls 726.7.1 Connection for fill level control K (E) 736.7.2 Fill level control F 73

6.8 Lubrication lines 746.8.1 Lubrication line arrangement 746.8.2 Connection of the lubrication lines 75

7. First start-up 767.1 Conduct an insulation test 767.2 Venting the RA multiline pump and lubricant lines 77

7.2.1 Venting an RA grease multiline pump 787.2.2 Venting an RA oil multiline pump 79

7.3 Adjusting the displacement using displacement chart and continuous operating pressure 80

7.4 Inspections before first start-up 837.5 Inspections during first start-up 83

8. Operation 848.1 Filling with lubricant (RAxxx3UA; RAxxx2M; RAxxx3M) 84

9. Cleaning 859.1 Cleaning agents 859.2 Exterior cleaning 869.3 Interior cleaning 869.4 RA multiline pump units with electric motor drive 86

10. Maintenance 8710.1 RA multiline pump units with electric motor drive 8710.2 General maintenance instructions 8710.3 Electric motor maintenance schedule 90

11. Malfunctions, causes, and remedies 91

12. Repairs 9211.1 Malfunctions on the fill level control / the fill level switch 92

13. Shutdown, disposal 9313.1 Temporary shutdown 9313.2 Permanent shutdown, disassembly 9313.3 Disposal 93

14. Accessories 94

15. Appendix 9515.1 Declaration of Conformity for motor, manufacturer VEM 9515.2 Associated supplier documentation 97

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ENExplanation of symbols, signs, and abbreviations

Explanation of symbols and signs

General warning Risk of electrical shock Risk of slipping Hot surfaces

Being drawn into machinery Crushing hazard Pressure injection Suspended load

Electrostatic sensitive components

Potentially explosive atmosphere

Disposal, recycling

Wear personal protective gear (goggles)

Wear personal protective gear (face mask)

Wear personal protective gear (gloves)

Wear personal protective gear (protective clothing)

Wear personal protective gear (protective footwear)

Unlock the product General notesDisposal of waste electrical and electronic equipment

Warning level Consequence Probability Symbol Meaning

DANGER Death, serious injury Immediate Chronological instructions

WARNING Death, Serious injury Possible ¡ Bullet list items

CAUTIONMinor injury

PossibleIndicates the requirements that must be met for the actions described in the following

IMPORTANT NOTE Property damage Possible

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EN Explanation of symbols, signs, and abbreviations

Abbreviations and conversion factors

re regarding °C degrees Celsius °F degrees Fahrenheitapprox. approximately K Kelvin Oz. ouncei.e. that is N Newton fl. oz. Fluid ounceetc. et cetera h hour in. inchincl. including s second psi pound per square inchmin. minimum d day sq.in. square inchmax. maximum Nm Newton meter cu. in. cubic inchmin minute ml milliliter mph miles per houretc. et cetera ml/d milliliters per day rpm revolutions per minutee.g. for example ccm cubic centimeter gal. gallonkW kilowatt mm millimeter lb. poundU voltage l liter hp horsepowerR Resistance db (A) sound pressure level kp kilopoundI current intensity > greater than fpsec feet per secondV volt < less than Conversion factorsW watt ± plus minus Length 1 mm = 0.03937 in.AC alternating current Ø diameter Area 1 cm² = 0.155 sq.in.DC direct current kg kilogram Volume 1 ml = 0.0352 fl.oz.A ampere RH relative humidity 1 l = 2.11416 pints (US)Ah ampere hour ≈ approximately Mass 1 kg = 2.205 lbsHz Frequency (Hertz) = equal to 1 g = 0.03527 oz.NC normally closed contact % percent Density 1 kg/cm³ = 8.3454 lb./gal(US)NO normally open contact ‰ per mil (thousandth) 1 kg/cm³ = 0.03613 lb./cu.in.≥ greater or equal Force 1 N = 0.10197 kp≤ less or equal Pressure 1 bar = 14.5 psi

mm2 square millimeter Temperature °C = (°F-32) x 5/9rpm Revolutions per minute Power 1 kW = 1.34109 hp

Acceleration 1 m/s² = 3.28084 ft./s²Speed 1 m/s = 3.28084 fpsec

1 m/s = 2.23694 mph

1

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EN1st Safety instructions

1. Safety instructions

1.1 General safety instructions

The operator must ensure that the in-

structions are read by all persons tasked

with working on the product or who

supervise or instruct such persons. The

operator must also ensure that the staff

fully understands the content of the in-

structions. Putting the products into op-

eration or operating them without having

read the instructions is prohibited.

Retain the instructions for further use.

The products described here were

manufactured according to the state of

the art. Risks may, however, arise from

non-compliant usage and may result in

personal injury or damage to material

assets.

Any malfunctions which may affect safety

must be remedied immediately. In ad-

dition to these instructions, the statu-

tory regulations for accident prevention

and environmental protection must be

observed.

1.2 General behavior when handling the product

The product may only be used in aware-

ness of the potential dangers, in proper

technical condition, and according to the

information in this manual.

Familiarize yourself with the functions

and operation of the product. The speci-

fied assembly and operating steps and

their sequences must be observed.

Any unclear points regarding proper con-

dition or correct assembly/operation must

be clarified. Operation is prohibited until

issues have been clarified.

Unauthorized persons must be kept

away.

Wear personal protective equipment.

All safety regulations and in-house in-

structions relevant to the particular activ-

ity must be observed.

Responsibilities for different activities

must be clearly defined and observed.

Uncertainty seriously endangers safety.

Protective and safety mechanisms must

not be removed, modified, nor disabled

during operation and must be checked

for proper function and completeness at

regular intervals.

If protective and safety mechanisms must

be removed, they must be reinstalled

immediately following conclusion of work

and then inspected for proper function.

Any malfunctions that occur must be

resolved according to responsibility. The

supervisor must be notified immediately

in case of malfunctions outside one's in-

dividual scope of responsibility.

Never use any part of the centralized

lubrication system as a stand or step or

for climbing.

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EN 1st Safety instructions

1.3 Intended use

Intended use is the use of the RA multiline

pump for the purpose of providing central-

ized lubrication.

The RA multiline pump is constructed as a

radial piston pump in a modular design. Up

to five pump elements each with one, two,

or four outlets can be “stacked” together. The

displacement of the outlets is continuously

variable (stepless adjustment) from outside.

The pump is suitable for use as a feed pump

for total loss lubrication systems or for circu-

lating lubrication systems with low circula-

tion rates (up to 30 cm3/min per outlet) or

as a multicircuit pump to supply multiple

independent lubrication zones.

Its operating pressure is max. 63 bar, with

up to 100 bar for short periods. The design

of the RA multiline pump permits it to pump

both oils and greases on mineral oil and syn-

thetic basis. Lubricants are fed in compliance

with the specifications, technical data, and

limits presented in this manual.

Usage is permitted exclusively in the context

of commercial or business activity by profes-

sional users.

Use in areas with damaging radiation

(e.g., ionizing radiation)

Use to feed, forward, or store hazardous

substances and mixtures as defined in

Annex I Part 2-5 of the CLP Regulation

(EC 1272/2008) that are marked with

hazard pictograms

GHS01-GHS 09

Use to feed / forward / store gases, lique-

fied gases, dissolved gases, vapors, or

fluids whose vapor pressure exceeds nor-

mal atmospheric pressure (1013 mbar)

by more than 0.5 bar at their maximum

permissible operating temperature

Use to feed, forward, or store lubricants

containing volatile solvents

Use in potentially explosive gases and

vapors whose ignition temperature is

less than 125% of the maximum surface

temperature

Third-party products, such as ATEX motors

or drives, attached to a rotary RA multline

pump must be recommended or approved

by the manufacturer.

1.4 Foreseeable misuse

Any usage of the product other than as

specified in this manual is strictly prohibited.

Particularly prohibited are:

Use outside the specified operating tem-

perature range

Use of non-specified equipment

Use without a pressure regulating valve -

maximum opening pressure 90 bar

Use in continuous operation

Use in areas with aggressive, corrosive

substances (e.g., high ozone loads)

1

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1.6 Modiications to the productUnauthorized modifications and changes

can have an unpredictable effect on safety.

Unauthorized modifications and changes are

therefore prohibited.

1.7 Prohibition of certain activities

The following activities must be performed

only by employees of the manufacturer or

persons authorized by the manufacturer due

to possibly undetectable sources of error or

due to statutory requirements:

Repairs, modifications to the drive

Replacement or modifications to pump

elements

Use in potentially explosive dusts whose

minimum ignition temperature and glow

temperature are less than 150% of the

maximum surface temperature

Use in another, more critical explosion

protection zone than specified on the

pump's rating plate

Use with a missing, damaged, or improp-

erly performed subsequent finish The

finish must meet the requirements of

standards applicable to ATEX.

1.5 Painting plastic components

The painting of all plastic components

and seals of the products described here

is prohibited. Completely mask or remove

plastic components before painting the main

machine.

1.8 Inspections prior to delivery

The following tests were performed prior to

delivery:

Safety and functional tests

For electrically operated products: Elec-

trical tests according to DIN EN 60204-

1:2007, VDE 0113-1:2007

For explosion-proof products: Inspections

pursuant to the requirements of the ATEX

Directive

1.9 Referenced documents

In addition to this manual, the following

documents must be observed by the respec-

tive target group:

Operational instructions, approval rules

The safety data sheet of the lubricant

used

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If necessary:

Project planning documents

Instructions from suppliers of purchased

parts

Instructions for other components for

setting up the centralized lubrication

system

Other relevant documents for integration

of the product into the main machine,

system

The explosion protection document of the

operator

1

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1.10 Markings on the product

The following warning labels are affixed to

the motor-driven RA multiline pumps. Be-

fore start-up, check that the labels are pres-

ent and intact. Immediately replace warning

labels if damaged or missing. The product

must not be operated until then. See the po-

sitioning diagram for the order number and

position on the product.

Positioning of warning labels, Fig. 1

Item 2

Item 1

Warning labels on the product

Item Symbol Designation Order No.

1Dangerous electrical voltage

44-1826-2850

2 Motor rotation arrow24-1826-25701 set, consisting of an arrow and 10 PE stickers 3

Equipotential bonding connection

Item 3

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1.11 Notes on the rating plate

The rating plate provides important data

such as the model, part number, etc.

To avoid loss of this data in case the rating

plate becomes illegible, these characteristics

should be entered in the manual.

Model _______________________________ P. No. ________________________________S. No. ________________________________Year of manufacture (CW/YY) ___________

_______°C ≤ Ta ≤ _______°C

Made in Germany

-15°C < Ta < +40°C

KW/JJXYZ

SKF Lubrication Systems Germany GmbH

1.12 Note on CE marking

The CE marking is based on the require-

ments of the applied Directives:

2014/34/EU Directive for equipment and

protective systems intended for use in

potentially explosive atmospheres (ATEX)

2011/65/EU (RoHS II) Directive on the

restriction of the use of certain hazardous

substances in electrical and electronic

equipment

Note on Low-Voltage Directive 2014/35/EU

The protection objectives of Low-Voltage

Directive 2014/35/EU are met in accordance

with Annex II, No. 1.2.7 of ATEX 2014/34/EU.

Note on Pressure Equipment Directive

2014/68/EU

Due to its performance characteristics,

the product does not reach the limit values

defined in Article 4, Paragraph 1, Subpara-

graph (a) item (i) and is, pursuant to Article

4, Paragraph 3, excluded from the scope of

Pressure Equipment Directive 2014/68/EU.

1.13 Persons authorized to use the product

1.13.1 Operator

A person competent due to training, knowl-

edge, and experience to execute the func-

tions and activities associated with normal

operation; this also includes the avoidance

of possible hazards that may arise during

operation.

1

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1.13.2 Qualiied mechanic

A person with appropriate technical train-

ing, knowledge, and experience who can

recognize and avoid the hazards that may

occur during transport, assembly, first start-

up, operation, maintenance, repair, and

dismantling

1.13.3 Qualiied electrician

A person with appropriate technical training,

knowledge, and experience who can recog-

nize and avoid hazards that may result from

electricity

1.13.4 Specialist in maintenance and servicing in potentially explosive atmospheres

This is a person competent due to qualified

technical education, training, and experience

to recognize risks and possible hazards when

working on the device or subcomponents

in potentially explosive atmospheres and to

rectify these by taking suitable actions. The

specialist has knowledge of the various types

of protection, installation procedures, and

explosive atmosphere classifications. The

specialist is familiar with the rules and re-

quirements relevant to his or her activity and

explosion protection, especially ATEX Direc-

tives 2014/34/EU and 1999/92/EC.

1.14 Instruction of outside ittersBefore commencing work, the operator

must inform outside fitters of the opera-

tional safety regulations, applicable accident

prevention regulations, and the functions of

the main machine and its protective devices.

1.15 Provision of personal protective gear

The operator must provide personal protec-

tive gear appropriate for the location and

intended application. This also includes ESD

clothing and ESD tools for work in a poten-

tially explosive atmosphere.

1.16 Operation

The following must be observed during first

start-up and operation:

All information within this manual and

all information within the referenced

documents

All laws and regulations that

the operator must observe

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1.17 Emergency shutdown

Shut down the product in an emergency by:

Switching off the main machine in which

the product is integrated

If necessary, pressing the on/off switch on

the main machine

1.18 Transport, assembly, maintenance, malfunction, repair, shutdown, disposal

during the work and that no limbs can be

pinched by unintended movements.

Assemble the product only outside the

operating range of moving parts, at an

adequate distance from sources of heat

or cold. Other units of the machine, the

vehicle must not be damaged or impaired

in their function by the installation.

Dry any wet, slippery surfaces or cover

appropriately.

Cover hot or cold surfaces appropriately.

Work on electrical components may be

performed only by qualified electricians.

Note possible waiting times for discharge.

Work on electrical components may be

performed only in a voltage-free state

and using tools suitable for electrical

work.

All relevant persons must be informed of

the activity prior to the start of this work.

Precautionary operational measures,

work instructions must be observed.

Transport only with suitable transport

and lifting gear on suitable paths.

Maintenance and repair work can be sub-

ject to restrictions at low or high temper-

atures (e.g., altered flow properties of the

lubricant). Maintenance and repair work

should therefore preferably be performed

at room temperature.

Prior to performing work, the product

and the machine in which the product

will be integrated must be de-energized,

depressurized, and secured against un-

authorized activation.

Take appropriate measures to ensure that

moving, detached parts are immobilized

1

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all drilling, welding, firing, and grinding

work.

Observe any possible wearing spots. Pro-

tect components appropriately.

All components used must be designed

for:

- The maximum operating pressure

- The maximum/minimum ambient tem-

perature

- The lubricant to be delivered

- The required ATEX zone

- The operating and ambient conditions

at the place of use.

No parts may be subjected to torsion,

shear, or bending.

Check parts for contamination before use

and clean if necessary.

Lubrication lines should be filled with

lubricant prior to assembly. This simplifies

subsequent venting of the system.

Establish the electrical connection only in

accordance with the valid circuit diagram

and in observance of the relevant regula-

tions and the local electrical operating

conditions.

Do not touch cables or electrical compo-

nents with wet or moist hands.

Fuses must not be bridged. Always re-

place defective fuses with fuses of the

same type.

Ensure proper grounding of the product.

Ensure proper connection of the protec-

tive conductor.

Drill required holes only on non-critical,

non-load-bearing parts of the opera-

tor's machine/infrastructure. Use existing

boreholes. Do not damage lines or cables

when drilling. Modifications to SKF prod-

ucts are prohibited. This also includes

Adhere to the specified torques. Use

a calibrated torque wrench when

tightening.

Use suitable hoisting equipment when

working with heavy parts.

Avoid mixing up/incorrectly assembling

disassembled parts. Label parts.

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1.19 First start-up, daily start-up

Ensure that:

All safety mechanisms are fully present

and functional.

All connections are properly connected.

All parts are correctly installed.

All warning labels on the product are fully

present, visible, and undamaged.

Illegible or missing warning labels are im-

mediately replaced.

1.20 Cleaning

There is a fire hazard from the use of

flammable cleaning agents. Use only

non-flammable cleaning agents that are

suitable for the intended purpose.

Do not use corrosive cleaning agents.

Do not use steam-jet equipment or high-

pressure cleaners. This may damage

electrical components.

Observe the IP protection class.

Cleaning work must not be performed on

conducting components.

Mark wet areas accordingly.

1.21 Protective and safety mechanisms

Protective and safety mechanisms can-

not be removed, modified, nor disabled

during operation and must be checked

for proper function and completeness at

regular intervals.

If protective and safety mechanisms must

be removed, they must be installed im-

mediately following conclusion of work

and then checked for proper function.

The following protective and safety

mechanisms are available depending on

the equipment design of the pump:

Sensor for fill level monitoring / mechani-

cal fill level gauge

Overload/thermal switch for electric

motor

Pressure regulating valves

Equipotential bonding connection

1

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1.22 Special safety instructions regarding explosion protection

Always behave so as to avoid explosion

hazards.

A written work authorization from the

operator is required prior to initiating

work in potentially explosive atmo-

spheres. Unauthorized persons must be

kept away.

There must be no evidence that parts of

the explosion protection are missing or

non-functional. If this is not excluded,

switch off the machine and immediately

notify the supervisor.

Explosion protection measures must

never be deactivated, changed, or

bypassed.

Shipping damage may lead to the loss of

explosion protection. If there is apparent

shipping damage, do not install or put

into operation the product.

The introduction of ignition sources such

as sparks, open flames, and hot surfaces

into potentially explosive atmospheres is

prohibited.

Depending on the operating conditions,

check the product for damage that may

present a risk of ignition and check for

proper function. An inspection must be

conducted at least every 12 months.

The ignition temperature of the sur-

rounding potentially explosive gases and

vapors must be greater than 125% of the

maximum surface temperature.

The minimum ignition temperature and

the glow temperature and the surround-

ing potentially explosive dusts must be

greater than 150% of the maximum sur-

face temperature.

The usage limits for explosion protection

are clearly defined in the explosion pro-

tection marking by the device categories,

gas and dust groups and temperature

classes. Light metal dusts, as a poten-

tially explosive ambient medium, are

always prohibited even when dust group

IIIc is specified.

The operator must ensure high-reliability

fill level monitoring.

For products without electrical fill level

control, the lubricant fill level is to be

checked at regular intervals.

The product may be filled via the res-

ervoir lid only if there is no potentially

explosive atmosphere. Filling via the fill

connection is also possible if there is a

potentially explosive atmosphere. The

- 20 -951-180-082-EN

Version 01


filling pump must be connected to the

equipotential bonding connection of the

pump.

The product may be cleaned only if there

is no potentially explosive atmosphere.

The lubricant’s ignition temperature

has to be at least 50 kelvin above the

maximum surface temperature of the

components.

Repairs or modifications to explosion-

proof machinery may be performed only

by the manufacturer or a workshop rec-

ognized by a notified body and accepted

by the manufacturer. If the work is not

performed by the manufacturer itself, the

repair must be accepted and approved in

writing by a recognized expert. The repair

is marked by a repair sign on the machine

containing the following information:

- Date

- Executing company

- Type of repair

- If applicable, mark by expert

Shipping damage may lead to the loss of

explosion protection. If there is apparent

shipping damage, do not install or put

into operation the product.

All parts of the grounding concept must

be properly present and connected with

the main machine.

If lifting eyes are removed after installa-

tion, seal the threaded holes according to

the protection type.

Handle materials in such a way that no

sparks may arise from tilting, dropping,

slipping, rubbing, or striking. If necessary,

cover materials by appropriate means.

Never disconnect any plug-in connec-

tions under electrical voltage. Secure

plug-in connections against disconnec-

tion by hand using the provided locking

clips.

The operator must critically examine

whether operation without an empty sig-

nal results in a new hazard potential (e.g.,

due to heating of bearings on the ma-

chine being lubricated to the range of the

ignition temperature in case of lubrication

failure). If this cannot be reliably excluded,

an empty signal must be provided or

appropriate organizational measures

taken to monitor the temperature of the

bearings.

Avoid / immediately remove any accu-

mulated dust. Accumulated dust has a

thermal insulating effect and promotes

the formation of a potentially explosive

atmosphere when agitated/swirled.

The product must be integrated into the

operator’s lightning protection scheme.

1

- 21 -951-180-082-EN

Version 01


1.23 Nulliication of ATEX approvalThe ATEX approval is nullified by:

Improper usage

Unauthorized alterations

Use of non-original SKF spare/replace-

ment components

Failure to comply with this manual and

referenced documents

Use of non-specified equipment

Failure to observe the prescribed repair

and maintenance intervals

Operation with a damaged, missing, or

improperly performed subsequent finish

that does not meet the requirements of

the standards applicable to ATEX.

1.24 Operation in potentially explosive atmospheres

Operation is only permitted in compliance

with:

All information within this manual and

the information within the referenced

documents

All laws and regulations that the operator

must observe

The information on explosion protection

according to Directive 1999/92/EC (ATEX

137)

The ATEX approval

The customer must provide a pressure

relief valve with a maximum opening

pressure of 90 bar at the pump outlets.

All parts must be inspected for corrosion

on a regular basis. Replace affected parts.

Junction boxes must be securely closed

and the cable glands properly sealed.

Any additional electrical monitoring

equipment must be securely connected

and correctly configured.

- 22 -951-180-082-EN

Version 01


1.26 Obligations of the operator

1.26.1 Identiication of hazards

The operator must identify all hazards re-

sulting from integration into the main ma-

chine as well as the hazards at the machine’s

place of installation. The operator must take

necessary measures for safety and health

protection.

1.26.2 Explosion protection measures

Based on a comprehensive assessment of

the work area, the operator ensures that the

equipment and all installation materials are

suitable for operation in potentially explosive

atmospheres and are assembled, installed,

and operated in such a way that they do not

cause an explosion.

If modifications, extensions, and/or conver-

sions are performed in potentially explosive

atmospheres, the operator shall take the

necessary measures to ensure that these

modifications, extensions, or conversions

fulfill the minimum explosion protection

requirements.

The operator

Documents the measures for explosion

protection

Marks the potentially explosive areas

Prepares written operating instructions

1.25 Explosion protection marking

The explosion protection marking is located

on the Declaration of Conformity and on the

rating plate.

Use of motors other than the standard mo-

tors can change the explosion protection

class.

Selects suitable employees

Provides the employees with adequate

and appropriate instruction regarding

explosion protection

Employs a release system for hazardous

activities and for those that may become

dangerous in interaction with other work

Performs required tests and monitoring

ensures that only original spare parts are

used.

1

- 23 -951-180-082-EN

Version 01


1.26.3 Provision of necessary information

The operator must the relevant required

instructions available to all persons assigned

with operation, repair, and maintenance.

The operator must ensure that the persons

in question have read and understood the

required instructions.

The same applies to all relevant safety data

sheets, operational instructions, accident

protection regulations, and instructions

from suppliers of purchased parts and

consumables.

Depending on the operational organization,

the relevant instructions may need to be

made available to further persons and/or

departments.

1.26.4 Duty to provide instruction and training

The operator clearly defines the responsibili-

ties of the personnel for operation, instal-

lation, maintenance. Prior to the first use

of the machine, the operator is obligated to

instruct all persons authorized to use the

machine on its proper handling in accor-

dance with their respective field of activity

and responsibility using practical exercises.

The instruction includes at least:

Zone classification

Scope and limits of the area of activ-

ity and responsibility for the respective

group of people

Safety-conscious behavior and behavior

in an emergency

Avoidance of hazards when handling the

product and the main machine

Meaning of warnings, warning labels

Handling operating materials and clean-

ing agents

If necessary, use and monitoring

of personal protective gear

These instructions must be documented and

repeated at regular intervals. New staff may

operate the machine only under the supervi-

sion and instruction of experienced staff.

- 24 -951-180-082-EN

Version 01


1.27 Residual risks

Residual riskPossible in

lifecycleAvoidance / Remedy

Personal injury / property damage due to falling of hoisted parts

A, B, C, G, H, KUnauthorized persons must be kept away; nobody is allowed to be present below hoisted parts. Lift parts using suitable and tested lifting gear.

Personal injury/property damage due to tilting or falling product due to non-compliance with specified torques

B, C, GAdhere to the specified torques. Secure the product only to components with a sufficient load-carrying capacity. If no torques are specified, use those specified for the screw size for screws of strength class 8.8.

Personal injury / property damage due to electric shock resulting from power lead damage

B, C, D, E, F, G, HInspect power leads for damage prior to initial use and then at regular intervals. Do not install the cable on moving parts or wearing spots. If this cannot be avoided, use anti-kink coils and/or conduits.

Personal injury / property damage due to spilled, leaked lubricant

B, C, D, F, G, H, K

Be careful when filling the reservoir and then connecting or disconnecting the lubricant lines. Use only hydraulic screw unions and lubrication piping suitable for the specified pressure. Do not install lubrication piping on moving parts or wearing spots. If this cannot be avoided, use flexible hose lines or anti-kink coils and/or conduits.

Lifecycles: A = Transport, B = Assembly, C = First start-up, D = Operation, E = Cleaning, F = Maintenance, G = Malfunction, repair, H = Shutdown, K = Disposal

1

- 25 -951-180-082-EN

Version 01


1.28 Residual ATEX risks



Use in a potentially explosive atmosphere without checking equipotential bonding for electrical continuity

C, D, GCheck the equipotential bonding for continuity before first start-up, after every repair, and ad-ditionally at regular intervals defined by the operator

Operation with a damaged, missing, or improperly performed subsequent finish that does not meet the requirements of the standards applicable to ATEX.

C, D, E, F, GPrior to first start-up and then at regular intervals, inspect the varnishing and if necessary have it replaced by a qualified person

Heating of non-supplied lubrication points to the ignition temperature range by an undetected malfunction within the centralized lubrication system

C, D, G

The operator must critically examine whether operation without corresponding detection op-tions results in a new hazard potential (e.g., due to heating of non-supplied bearings on the machine to the range of the ignition temperature); if this cannot be reliably excluded, take ap-propriate countermeasures

Heating of components to the ignition temperature range / formation of a potentially explosive atmosphere by agi-tated/swirled dust

C, D, E, F, GAvoid accumulated dust / remove accumulated dust on a regular basis; select an installation location with the lowest possible dust level


- 26 -951-180-082-EN

Version 01




Generation of electrostatic charges or sparks by dropping of parts

C, D, E, F, G Secure parts against falling. if necessary, cover parts to avoid sparking

Introduction of catalytic, unstable, or pyro-phoric substances into the potentially explosive atmosphere

C, D, E, F, GEnsure that none of these substances enter the potentially explosive atmosphere; have all substances approved by the operator in advance

Use of isolating amplifiers, for example to oper-ate a capacity sensor in the potentially explosive atmosphere

C, D, G Install isolating amplifiers only outside of the potentially explosive atmosphere

Incorrect mounting position Loss of proper fill level reporting function

C, D, GFollow the prescribed mounting position (± 5°) Correct the mounting position if necessary

Use of an unsuitable lubricant for low tempera-tures; at low temperatures, excessive lubricant viscosity can cause loss of pump function

C, D Use only lubricants suitable for the specific operating temperature in each case

Filling the reservoir via the reservoir lid in a potentially explosive atmosphere

B, c, D, F Fill the reservoir via the reservoir lid only if there is no potentially explosive atmosphere.


2

1

- 27 -951-180-082-EN

Version 01

EN2. Lubricants

2. Lubricants

2.1 General information

Lubricants are used specially for specific

applications. To fulfill the task, lubricants

must meet various requirements to varying

degrees. The most important requirements

for lubricants are:

Reduction in friction and wear

Corrosion protection

Noise reduction

Protection against contamination/

ingress of foreign matter

Cooling (primarily for oils)

Durability (physical/chemical stability)

Compatible with as many materials as

possible

Economic and environmental aspects

2.2 Selection of lubricants

SKF Lubrication Systems considers lubri-

cants to be an element of system design.

The selection of a suitable lubricant should

reasonably be made during the design of the

machine and forms the basis for planning

the centralized lubrication system.

The manufacturer/operator of the machine

should preferably make the selection with

the supplier of the lubricant on the basis of

the requirements profile of the specific task.

If you have no or little experience selecting

lubricants for centralized lubrication sys-

tems, please contact SKF.

We gladly assist our customers in the selec-

tion of suitable components for feeding the

selected lubricant and in the planning and

design of a centralized lubrication system.

This will spare you potentially costly down-

time due to damage to the machine/system

and/or damage to the centralized lubrication

system.

Only lubricants specified for the

product may be used (see “Technical

data” chapter). Unsuitable lubricants

may lead to failure of the product.

Do not mix lubricants. This can have

unpredictable effects on the usability

and this function of the centralized

lubrication system.

Due to the large number of possible

additives, individual lubricants that

meet the required specifications ac-

cording to the manufacturer’s data

sheet are under some circumstances

not suitable for use in centralized

lubrication systems (e.g., incompat-

ibility between synthetic lubricants

and materials). To avoid this, always

use lubricants that have been tested

by SKF.

- 28 -951-180-082-EN

Version 01

EN 2. Lubricants

2.3 Material compatibility

The lubricants must generally be compatible

with the following materials:

Steel, gray cast iron, brass, copper,

aluminum

NBR, FKM (FPM), ABS, PA, PU

2.4 Aging of lubricants

In case of extended machine downtime,

check before putting back into operation that

the lubricant is still suitable for use in terms

of chemical and physical signs of aging. We

recommend performing this inspection after

one week of machine downtime.

In case of doubt regarding the suitability of

the lubricant, replace it before putting back

into operation and, if necessary, perform an

initial lubrication manually.

It is possible for lubricants to be tested in the

company's laboratory for their suitability for

pumping in centralized lubrication systems

(e.g., "bleeding").

Please contact SKF if you have further ques-

tions regarding lubricants.

An overview of the lubricants we have tested

is available on request.

2.5 Lubricants in potentially explosive atmospheres


has to be at least 50 kelvin above

the permissible surface tempera-

ture of the components.

3

2

- 29 -951-180-082-EN

Version 01

EN3. Overview, functional description

3. Overview, functional description

Rotary drive, Fig. 2 Item Description

1 Radial piston pump

1.1 Initial section

1.2 Pump element

1.3 Sealing cap

1.4 Tie-rod with cap nut

2 Coaxial gear

3 Bevel gear

4 Grease reservoir

4.1 Electrical fill level switch (K/F)

4.2 Visual max. level gauge

5 Cables for potential equalization

Rotary drive, coaxial

-Chapter 4.1.1 and Chapter 6.3.1

Rotary drive with coaxial gear


Rotary drive with bevel gear


Rotary drive with bevel gear

and grease reservoir


3.1 Assembly

1

1.4

1.11.2

1.3

4.1

4.2

-Rotary, coaxial

-Rotary, with coaxial gear

-Rotary, with bevel gear and grease reservoir

-Rotary, with bevel gear

3

4

5

3

2

- 30 -951-180-082-EN

Version 01

EN 3. Overview, functional description

Electric motor drive, Fig. 3

Item Description


1.1 Initial section

1.2 Pump element

1.3 Sealing cap

1.4 Tie-rod with cap nut (2x)

2 Electric motor

2.1 Motor foot

2.2 Terminal box

Electric motor drive, coaxial


Electric motor drive with

Coaxial gear



Bevel gearing


2

1.11.2

1.4

1.3

-Coaxial gear

-Bevel gear

-Coaxial2.1

12.2

3

- 31 -951-180-082-EN

Version 01


2.2

Item Description


1.1 Gear (coaxial/bevel)

1.2 Initial section

1.3 Pump element

2 Electric motor

2.1 Motor foot

2.2 Terminal box

3 Grease reservoir

3.1 Electrical fill level switch (K/F)

3.2 Visual max. level gauge

4 Cables for potential equalization


coaxial gear and grease reservoir with fill

level control



coaxial gear and grease reservoir with fill

level control


1

Bevel gear with grease reservoir

Coaxial gear with grease reservoir

1.2

1.3

1.1

2

2.1

3

3.1

3.2

4

Electric motor drive, with grease reservoir, Fig. 4

- 32 -951-180-082-EN

Version 01


3.2 Functional description

The RA multiline pump is constructed as a

radial piston pump in a modular design. Up

to five pump elements each with

one, two, or four outlets can be stacked to-

gether so that the number of outlets can be

adapted to current requirements in the best

possible way.

The simple stacking design also enables

subsequent expansion or reduction of the

number of pump outlets.

The displacement of a pump element's

outlets is continuously variable (stepless

adjustment) from outside. Continuous vari-

ability and a wide speed range guarantee an

extremely broad range of delivery rates.

This makes the pump highly attractive as

a feed pump for total-loss lubrication or

for circulating lubrication systems with low

circulation rates (RA1: up to 30 cm3/min per

outlet) or as a multi-circuit pump to supply

multiple independent lubrication zones.

Its operating pressure is max. 63 bar, with

up to 100 bar for short periods.

The design of the RA multiline pump permits

it to pump both oils and greases on mineral

oil and synthetic basis (see note in the "Tech-

nical data” chapter).

IMPORTANT NOTE

The RA multiline pump may be operated

only with high-reliability fill level monitor-

ing. This must ensure that the RA multline

pump is switched off if the fill level falls

below the minimum mark.

If the lubricant reservoir is emptied well

below the “minimum” mark, the RA mult-

line pump unit and possibly the entire

centralized lubrication system need to be

vented.

3

- 33 -951-180-082-EN

Version 01


3.3 Operation of the RA multline pump

As the pump shaft turns, the two pump pis-

tons move apart due to the spring loading,

until the outer dead center is reached.

Until the outer dead center is reached, the

control bore in the pump shaft connects the

space between the two pump pistons with a

lubricant inlet in the spacer ring. This is the

suction phase. Due to the elliptically shaped

track ring, the pump pistons move together

against the spring force as the pump shaft

continues to turn, until the inner dead center

is reached. Until the inner dead center is

reached, the control bore in the pump shaft

connects the space between the two pump

pistons with a lubricant outlet in the pump

ring. This is the pressure phase.

The displacement can be varied continu-

ously (steplessly) with the adjusting plate

using the phase control method, meaning

that the track ring position is changed rela-

tive to the position of the control bore in the

pump shaft.

The stroke of the two pistons remains the

same in every phase variation; it is fully ef-

fective or only partially effective, depending

on the setting.

)See Figure 5

In its basic design, the RA multiline pump is

comprised of a drive, initial section with the

lubricant inlet, at least one pump element,

and a cap.

The pump element shown in Figure 5 in its

pressure phase is comprised of the pump

ring (1), the pump shaft (2) with the two ra-

dial pump pistons (3) and the track ring with

elliptical inner contour (4), which is perma-

nently joined to the adjusting plate (5). The

pump ring (1) houses the suction grooves

and the pressure bores. The pump shaft,

which also acts as the drive shaft for the next

pump element via the embedded coupling, is

designed as a rotary valve.

The two pump pistons are pressed against the

inner side of the track ring by the spring (6).

IMPORTANT NOTE

The customer must provide a pressure

relief valve with a maximum opening pres-

sure of 90 bar at the pump outlets.

-See example in Figure 5

- 34 -951-180-082-EN

Version 01


Pump element in the pressure phase, Fig. 5

Spacer ring

Drive

Cap

Pump element

Tie-rods with cap nut

Outlet

1 Pump ring

2 Pump shaft

6 Spring

5 Adjusting plate

4 Track ring

3 Pump piston

Inlet

Pressure relief valve (opening pressure 90 bar)Part No. 24-2103-3680

Banjo fittingPart No. 24-2106-2390

Example

4

EN4. Technical data

3

- 35 -951-180-082-EN

Version 01

4.1 Design with rotary drive

Version Unit RA1UA / RA2UB / RA3UA

Explosion protection markingzone 1

zone 21

II 2G Ex h IIC T4 Gb

II 2D Ex h IIIC T135°C Db

Mounting position Any

Permissible ambient temperature °C -20°C to +60°C

Pump

Type Radial piston pump

Max. operating pressure P bar 63

Short-term pressure bar 100

Number of stackable pump elements max. 5

Outlet ports per pump element 1, 2 or 4

Displacement variability per pump elementContinuously variable, see displacement chart, Figs. 24-25, pages

81/82

Displacement per outlet and revolution of the pump shaft cm3 Max. 0.02

Drive speed, max. rpm RA1UA = 10 to 1500; RA2UB/RA3UA = 10-3600

Maximum permiss. power consumption kW 0.3

Direction of rotation Clockwise

Lubricant

Oils and greases on mineral oil and synthetic basis.

If a synthetic oil is used as the pumped fluid, consult the lubricant

manufacturer beforehand to find out whether it will corrode the seals

(Perbunan) and whether it can be mixed with the previous lubricant.

4. Technical data

4.1.1 Rotary, coaxial (RA1UA)

4.1.2 Rotary with coaxial gear (RA2UB)

4.1.3 Rotary with bevel gear (RA3UA)

EN 4. Technical data

- 36 -951-180-082-EN

Version 01

Version RA1UA / RA2UB / RA3UA

Total weight (kg):

RA1UA (number of elements)

RA2UB (number of elements)

RA3UA (number of elements)

(1) 1.17

(1) 1.85

(1) 1.61

(2) 1.56

(2) 2.24

(2) 2.01

(3) 1.94

(3) 2.62

(3) 2.40

(4) 2.32

(4) 3.02

(4) 2.80

(5) 2.70

(5) 3.41

(5) 3.20

Displacement per outlet and motor speed of 1500 rpm

Type Reduction ratio

Displacement per outlet[cm³/min]

Max. permiss. operating pressure

[bar]

IMPORTANT NOTE Observe the maximum permissible drive speed!

Maximum Minimum

RA1UA 1:1 30.00 10.00 63 Not approved for 60 Hz motors

RA2UB 5:1 6.00 2.00 63

RA3UA 10.5:1 2.86 0.95 63

RA2UB 15:1 2.00 0.67 63

RA2UB 25:1 1.20 0.40 50

RA2UB 75:1 0.40 0.13 20

RA2UB 125:1 0.24 0.08 10


Lubricant temperature range °C -20 to +60

Operating viscosity mm2/s 25 to 2500

Lubricant purity level (OIL) µm ≥5 to ≤10Intake tube inside diameter and mm ≥ 4 Max. suction head mm 500

4

EN4. Technical data

- 37 -951-180-082-EN

Version 01

RA 2UB 15 / 4 4 1 2 5 D R 4xxx

Type

RA Radial piston pump

Drive

2UB = Rotary, with coaxial gear

Reduction ratio

05 = 5:1 15 = 15:1 25 = 25:1

75 = 75:1 13 = 125:1

Number of outlets per pump element

1 = 1 outlet 2 = 2 outlets

4 = 4 outlets X = Without pump element

1 to 5 pump elements (counted from drive)

Cap prelubrication

/ = Without cap prelubrication

Direction of rotation

R = Standard: clockwise

ATEX design key

4xxxII 2G Ex h IIC T4 Gb


4.1.4 Explanation of order codes for rotary drive (RA1UA)

RA 1UA 00 / 4 4 2 X X R 4xxx

Type


Drive

1UA = Rotary, coaxial

Reduction ratio

00 = 1:1 (drive speed max. 1500 rpm







ATEX design key



Pu

mp

elem

ent 1

Pu

mp

elem

ent 5

Pu

mp

elem

ent 1

Pu

mp

elem

ent 5

4.1.5 Explanation of order codes for rotary drive with coaxial gear (RA2UB)

Example: Example:


- 38 -951-180-082-EN

Version 01

4.1.6 Explanation of order codes for rotary drive with bevel gear (RA3UA)

RA 3UA 01 A 4 2 4 4 1 R 4xxx

Type


Drive

3UA = Rotary, bevel gear

Reduction ratio

01 = 10.5:1

Drive position

A or B -See Figure 9, page 59







ATEX design key



Pu

mp

elem

ent 1

Pu

mp

elem

ent 5

Example:

4

EN4. Technical data

- 39 -951-180-082-EN

Version 01

4.2 Design with electric motor drive

4.2.1 Electric motor drive, coaxial (RA1M)

Version Unit RA1M / RA2M / RA3M

ATEX protection type, depending on ATEX

motor certification:

Zone 1

Zone 21



Mounting position Horizontal/vertical

Assembly location Maximum 1000 m above sea level, special versions available

Permissible ambient temperature °C -20 to +40

Pump Type Radial piston pump

Max. operating pressure P bar 63, see displacement chart, Figs. 24-25, pages 81/82


Number of stackable pump elements Max. 5


Displacement variability per pump element continuously variable

Drive speed rpm

10 to max. 1500 at 50 Hz

10 to max. 1800 at 60 Hz

Version 60 Hz/1800 rpm not permitted for gear ratio 1:1 (RA1M)

Direction of rotation Clockwise

Lubricant

Oils and greases on mineral oil and synthetic basis. If a synthetic oil is used as the

pumped fluid, consult the lubricant manufacturer beforehand to find out whether it will

corrode the seals (Perbunan) and whether it can be mixed with the previous lubricant.



4.2.2 Electric motor drive, with coaxial gear (RA2M)

4.2.3 Electric motor drive, with bevel gear (RA3M)


- 40 -951-180-082-EN

Version 01

Version RA1M / RA2M / RA3M

Intake tube inside diameter / Max. suction head ≥ 4 mm/suction head 500 mmTotal weights with-

out motor: (kg)

RA1M (number of elements)



(1) 1.82

(1) 2.71

(1) 1.62

(2) 2.20

(2) 3.10

(2) 2.00

(3) 2.59

(3) 3.48

(3) 2.39

(4) 2.97

(4) 3.86

(4) 2.77

(5) 3.36

(5) 4.25

(5) 3.16

- Motor weights - see

Technical data for the

motors


Lubricant purity level (OIL) µm ≥5 to ≤10Intake tube inside diameter and mm ≥ 4 Max. suction head mm 500

Motor frequency Hz 50 (standard), 60 on request

Motor data for 50 Hz motors see pages 41 and 42

Displacement per outlet and motor speed of 1500 rpm




[bar]


Maximum Minimum

RA1M 1:1 30.00 10.00 63 Not approved for 60 Hz motors

RA2M 5:1 6.00 2.00 63

RA3UA 10.5:1 2.86 0.95 63

RA2M 15:1 2.00 0.67 63

RA2M 25:1 1.20 0.40 50

RA2M 75:1 0.40 0.13 20

RA2M 125:1 0.24 0.08 10

4

EN4. Technical data

- 41 -951-180-082-EN

Version 01

Three-phase motor for use in zone 21

-See rating plate. This data refers to three-phase motors from VEM; other specifications available on request.

Motor design 230 VAC, rated current 0.9 A / 400 VAC, rated current 0.5 A, 50 Hz

Motor typeThree-phase motor with squirrel cage rotor, Premium Efficiency IE3, protection type by housing “tb”Motors for use in zone 21 acc. to EN 60079-31

Explosion protection marking II 2D Ex tb IIIC T125 °C DbProtection typeEx tb IIIC T125°C Db

Type IM B34K

Protection class IP65With surface cooling, cooling method IC 411

Maximum site altitude 1000 m

Insulation class F-155 Continuous operation Operating mode S1

Maximum surface temperature 125°C

Terminal box Ex eb IIC, top Cable glands M20x1.5 MS

Motor weight 7.1 kg

Rated speedRated speed

1500 rpm1405 rpm

Design 4-pin Premium Efficiency IE3/Manufacturer VEM

SKFOrder codesOrder code

ATEX / type P MB nB B cosB IB IA/IB m Frame size/langeII 2D Ex tb IIIC T125°C Db [kW] [Nm] [m-1] [IEC/EN60034-30-1] [400V] [kg]

100% 75% 50% A FT C

AF IE3-KPR 63 G4 Ex II2D 0.18 1.22 1405 IE3- 69.9 68.0 62.2 0.70 0.60 4.1 7.1 75 90

SKF item number: 84-5510-4802


- 42 -951-180-082-EN

Version 01

Three-phase motor for use in zone 1

-See rating plate. This data refers to three-phase motors from VEM; other specifications available on request.

Motor design 230 VAC, rated current 0.9 A / 400 VAC, rated current 0.5 A, 50 Hz

Motor typeThree-phase motors with squirrel cage rotor, Standard Efficiency IE1, protection type explosion-proof enclosure “d/de”Motors for use in zone 1 acc. to EN 60079-1

Explosion protection marking II 2G Ex d/de IIC T4 GbProtection typeEx de IIC T4 Gb

Type IM B34K

Protection class IP55With surface cooling, cool-ing method IC 411

Maximum site altitude 1000 m

Insulation class F/B 155 Continuous operation Operating mode S1

Terminal box VIK design Cable glands M25x1.5 MS, N-side direction

Motor weight 16.0 kg

Rated speedRated speed

1500 rpm1415 rpm

Design 4-pin Standard Efficiency IE1/Manufacturer VEM

SKFOrder codesOrder code

ATEX / type P MB nB B cosB IB IA/IB m Frame size/langeII 2G Ex d/de IIC T4 Gb [kW] [Nm] [m-1] [400V] [kg]

A FT C

AF K82R63 Mx4 0.18 1.2 1415 70 0.70 0.53 4.7 16 75 90

SKF item number: 84-5510-4803

4

EN4. Technical data

- 43 -951-180-082-EN

Version 01

4.2.4 Explanation of orders codes for electric motor drive, coaxial (RA1M)

RA 1M 00 4 4 2 XX 4xxx AF 07

TypeRA = Radial piston pump

Drive

1M = Electric motor, coaxial

Reduction ratio

00 = 1:1





ATEX design key



Motor order codes

AF = Motor key data

Motor protection class

07 = Protection class IP55


Pu

mp

elem

ent 1

Pu

mp

elem

ent 5

Example:


- 44 -951-180-082-EN

Version 01

4.2.5 Explanation of order codes for electric motor drive with coaxial gear (RA2M)

RA 2M 15 4 4 4 2 1 / R 4xxx AF 07

TypeRA = Radial piston pump

Drive2M = Electric motor, with coaxial gear

Reduction ratio

05 = 5:1 15 = 15:1 25 = 25:1

75 = 75:1 13 = 13:1





Cap prelubrication

/ = Without cap prelubrication



ATEX design key



Motor order codes

AF = Motor key data




Pu

mp

elem

ent 1

Pu

mp

elem

ent 5

Example:

4

EN4. Technical data

- 45 -951-180-082-EN

Version 01

4.2.6 Explanation of order codes for electric motor drive with bevel gear (RA3M)

RA 3M 01 4 4 4 2 1 4xxx AF 07

Type

RA = Radial piston pump

Drive

3M = Electric motor, with bevel gear

Reduction ratio

01 = 10.5:1





ATEX design key



Motor order codes

AF = Motor key data




Pu

mp

elem

ent 1

Pu

mp

elem

ent 5

Example:


- 46 -951-180-082-EN

Version 01

4.3 Design with rotary drive, with grease reservoir

4.3.1 Rotary drive, with bevel gear and grease reservoir (RA...3UA)

Version Unit

Explosion protection markingzone 1

zone 21



Mounting position Vertical, reservoir upwards



Max. operating pressure P bar 63, see displacement chart, Figs. 23-24, pages 81/82





Displacement per outlet at motor speed of 1360 rpm (cm3/min) RA20F3UA = Approx. 27.2

Drive speed RPM 100 to max. 1500

Direction of rotation Drive position A, clockwise

Lubricant Greases on mineral oil and synthetic basis


Lubricating greases, penetration according to: NLGI Grade ≤ 2Lubricant temperature range °C -20 to +60

Lubricant filling Via fill connection

Total weight withkg (approx.)

With 4.5 kg grease reservoir: Element 1: 6.03 / 2: 6.42 / 3: 6.82

With 2 kg grease reservoir: Element 1: 5.73 / 2: 6.12 / 3: 6.52

4

EN4. Technical data

- 47 -951-180-082-EN

Version 01

4.3.2 Explanation of order codes for rotary drive, with bevel gear and grease reservoir (RA...3UA)

RA 20 F 3UA 01 B 4 4 4 4xxx

Type


Reservoir capacity

20 = 2 kg 45 = 4.5kg

Fill level switch

K =With 2 switching points and visual maximum fill indicator (in lid)

F = With 3 switching points

Drive

3UA = Rotary, with bevel gear

Reduction ratio

01 = 10.5:1

Drive position

B = Clockwise





ATEX design key



Pu

mp

elem

ent 1

Pu

mp

elem

ent 3

Example:


- 48 -951-180-082-EN

Version 01

4.4 Design with electric motor drive, with grease reservoir

4.4.1 Electric motor drive, with coaxial gear and grease reservoir (RA...2M)

4.4.2 Electric motor drive, with bevel gear and grease reservoir (RA...3M)

Version Unit RA20F2M / RA20F3M

Explosion protecting marking, depending on ATEX motor

certification:

zone 1

zone 21



Mounting position Vertical, reservoir upwards

Assembly location Maximum 1000 m above sea level, special versions available



Max. operating pressure P bar 63





Displacement per outlet at motor speed of 1360 rpm (cm3/min) See displacement chart, Figs. 23-24

Drive speed RPM10 to max. 1500 at 50 Hz

10 to max. 1800 at 60 Hz

Direction of rotationRA...2M counterclockwise direction of motor rotation

RA...3M clockwise direction of motor rotation

Lubricant Greases on mineral oil and synthetic basis


4

EN4. Technical data

- 49 -951-180-082-EN

Version 01

Version Unit RA20F2M / RA20F3M


Lubricating greases NLGI Grade ≤ 2Lubricant filling Via fill connection

Pump weight of RA...2M without motor, motor weights -

see Technical data for the motorskg (approx.)

With 2 kg grease reservoir: Element 1: 7.42 / 2: 7.81 / 3: 8.20


Pump weight of RA...3M

without motor, motor weights -

see Technical data for the motors

kg (approx.)With 2 kg grease reservoir: Element 1: 6.10 / 2: 6.48 / 3: 6.87


Motor frequency 50 (standard), 60 on request

Motor data for 50 Hz motors See page 41 to page 42

Displacement per outlet at motor speed of 1500 rpm




[bar]


Maximum Minimum

RA20F3M 10.5:1 2.86 0.95 63

RA20F2M

15:1 2.00 0.67 63

25:1 1.20 0.40 50

75:1 0.40 0.13 20

125:1 0.24 0.08 10


- 50 -951-180-082-EN

Version 01

4.4.3 Explanation of order codes for electric motor drive, with coaxial gear and grease reservoir (RA...2M)

RA 20 K 2M 15 4 4 4 4xxx AF 07

Type


Reservoir capacity

20 = 2 kg 45 = 4.5kg

Fill level switch



Drive2M = Electric motor, with coaxial gear

Reduction ratio15 = 15:1 25 = 25:1

75 = 75:1 13 = 125:1





ATEX design key



Motor order codesAF = Motor key data

Motor protection class07 = Protection class IP55


Example:

Pu

mp

elem

ent 1

Pu

mp

elem

ent 3

4

EN4. Technical data

- 51 -951-180-082-EN

Version 01

4.4.4 Explanation of order codes for electric motor drive, with bevel gear and grease reservoir (RA...3M)

RA 20 K 3M 01 1 2 4 4xxx AF 07

Type


Reservoir capacity

20 = 2 kg 45 = 4.5kg

Fill level switch



Drive

3M = Electric motor, with bevel gear

Reduction ratio

01 = 10.5:1





ATEX design key



Motor order codes

AF = Motor key data




Pu

mp

elem

ent 1

Pu

mp

elem

ent 3

Example:


- 52 -951-180-082-EN

Version 01

4.5 Fill level control

)See instructions in Chapter 6.7, “Electrical

connection of fill level controls.”

4.5.1 Fill level control for grease with changeover function K (E)

4.5.2 Fill level switch with NC/NO function for grease (F)

Fill level control K (E)

Design Reed contact, minimum monitoring

Form of contact

Changeover

Contact type Reed contact

Voltage Ui 30 V DC

Current Ii 100 mA

Capacitance Ci 1 nF

Inductance Li 5 µH

Connection type

EN 175301-803 plug

Protection class IP 65

Fill level switch F

Design Reed contact, minimum min./max. and maximum monitoring

Form of contact NC contact/NO-contact

Voltage Ui 30 V DC

Current Ii 100 mA

Capacitance Ci 1 nF

Inductance Li 5 µH

Connection diagram

Plug, EN 175301-803 (DIN 43650)


4.6 Tightening torques

)Wiring diagram, see Chapter 6.7.1

)Wiring diagram, see Chapter 6.7.2

Tightening torques

The specified torques must be observed during assembly and maintenance.

RA with base, machine, control cabinet

Determined by customer

Pressure regulating valve 8 Nm ± 1.0 Nm

Terminal box lid motor M5 M6 M8

6 ± 1.0 Nm10 ± 1.0 Nm25 ± 1.0 Nm

Inlet and outlet screws 20 Nm ± 2.0 Nm

Cable glands 2 Nm ± 0.5 Nm

5

EN5. Delivery, returns, storage

4

- 53 -951-180-082-EN

Version 01

5. Supply, returns, storage

5.1 Supply

After receipt of the supply, it must be in-

spected for any shipping damage and for

completeness according to the shipping

documents. Immediately inform the trans-

port carrier of any shipping damage.

The packaging material must be preserved

until any discrepancies are resolved. Safe

handling must be ensured during on-site

transport.

5.3 Storage

Before usage, check products for

damage that may have occurred

during storage. This applies in

particular to parts made of plas-

tic and rubber (due to embrittle-

ments) as well as components

pre-filled with lubricant (due to

aging).

The following conditions apply to storage:

The permissible storage temperature

range corresponds to the operating tem-

perature range (see “Technical data”).

Dry, low-dust, vibration-free, in closed

rooms

No corrosive, aggressive substances at

the storage location (e.g., UV rays, ozone)

Protected against animals

In the original product packaging

5.2 Return shipment

Before return shipment, all contaminated

parts must be cleaned and properly packed

(i.e., according to the requirements of the

recipient country).

The product must be protected from me-

chanical effects such as impacts. There are

no restrictions for land, air, or sea transport.

The following must be marked on the pack-

aging of return shipments:

EN 5. Delivery, returns, storage

- 54 -951-180-082-EN

Version 01

Protected from nearby sources of heat

or cold

In case of large temperature fluctua-

tions or high humidity, take appropriate

measures (e.g., heating) to prevent the

formation of condensation water.

5.3.1 Corrosion protection

The corrosion protection (e.g., on the inside

of the container) should be checked and (if

applicable) renewed every 6 - 12 months

depending on the loads at the storage

location.

We recommend:

Henkel Teroson Fluid DS 150 ML VE 12

OKS 450 Chain and Adhesive

Lubricating Oil

5.3.2 Special storage conditions for motors

Do not store motors on the fan cowl.

Be sure to inspect insulation resistance of

the motor before putting back into opera-

tion after extended storage.

Note that when the bearing grease is

stored > 1 year, its useful life declines by

10% per year. Check the condition of the

grease.

6

EN6. Assembly

5

- 55 -951-180-082-EN

Version 01

6. Assembly

6.1 General information on assembly

DANGER

Explosion Prior to assembling the RA multiline pump unit, all safety-related ATEX rules and certificates must be present and maintained. It must be ensured (checked) that no potentially explosive atmosphere is present. The applicable ATEX Directives must be observed.

IMPORTANT NOTE

The ATEX RA multiline pump may be oper-

ated only with fill level monitoring. The

customer must ensure “high-reliability” fill

level monitoring.

Only qualified technical personnel may install

the products specified in the instructions.

During assembly, pay attention to the

following:

Other units must not be damaged by as-

sembly work.

The product must not be installed within

range of moving parts.

The product must be installed at a suf-

ficiently large distance from sources of

heat or cold.

Observe the IP protection class of the

product (with an electric motor drive)

Maintain safety clearances and comply

with statutory regulations for assembly

and accident prevention.

Any visual monitoring equipment present

must be clearly visible

Follow the mounting position require-

ments in “Technical data” (Chapter 4).

Prior to beginning installation, inspect the

full scope of delivery of the RA multline

pump unit for any damage or corrosion.

IMPORTANT NOTE

No radial or axial active forces may occur

at the shaft extension of the RA multiline

pump. The pump may only be put into op-

eration and operated with an oil/grease

supply; the pump must not run dry.

IMPORTANT NOTE

Never seal off outlets on the RA multiline

pump that are not required.

EN 6. Assembly

- 56 -951-180-082-EN

Version 01

6.2 Assembly location

The product should, to the extent possible,

be protected from humidity and vibration,

and should be mounted so that it is easily

accessible. This facilitates further installa-

tion, inspection, and maintenance work on

the product.

Install the pump on a flat surface or flange.

The pump must not be under stress.

RA multiline pumps are designed to deliver

low to minimal volumetric flows. They there-

fore have very limited suction performance

compared with pumps with larger volu-

metric flows. When designing the system/

machine, the RA multiline pump should be

installed below the oil level or the oil feed

line. This supports the pump’s self-venting

properties and prevents dry running as well

as premature wear.

At the same time, ensure that the suction

lines do not extend to the lowest point of the

oil reservoir. Under no circumstances may

any existing oil sump be drawn in.

To keep the RU multline pump from running

dry, SKF recommends a fill level control with

a minimum switching point.

This fill level control can optionally be sup-

plemented with a customer-provided timer

that shuts down the system if the fill level

drops too low.

The customer must provide a pressure relief

valve with a maximum opening pressure of

90 bar at the pump outlets.

6.2.1 Minimum mounting dimensions

To ensure enough space for maintenance

work or clearance for possible disassembly

of the product, ensure that the minimum

mounting dimensions specified in the fol-

lowing assembly drawings (clearance di-

mensions) are maintained.

Installation examples, Fig. 6

0 0

10

10

1 1

0 0

10

10

1 1

0 0

10

10

1 1

RA, self-priming

Attachment scale

Optimal

Good

Avoid

Not permitted!

Min. ill level

Venting

Filler socket with microilter strainerCustomer-provided minimum ill level monitoring

The customer must ensure “high-reliability” fill level monitoring.

6

EN6. Assembly

- 57 -951-180-082-EN

Version 01

Assembly drawing with minimum installation dimensions, Fig. 7

Minimum mounting dimensions

-See dimensions marked redNumber of pump elements [mm]

1 2 3 4 5D ø 100L 120 147 174 201 228

6.3 RA oil and grease lubrication pumps

6.3.1 Rotary drive, coaxial (RA1UA)

ø15.2

32.5

53 27 27 27 27 28.5

8

21

31

220.5

ø11

f7

ø30 h

9

9

15

IV

I

II

III

4 h9

12.5

M6

Ø42

ø54

DL

Positioning of

outlets I ... IV

Outlet G1/8Inlet G1/8

Inlet

EN 6. Assembly

- 58 -951-180-082-EN

Version 01

6.3.2 Rotary drive, with coaxial gear (RA2UB)


IIIV

I III

ø15.2

L1 21 27 27 28.5

7

21

31

ø11 f7

ø38 h9

9

15

4 h9

12.5

ø60

M6

45°

ø54

ø62

ø70

27 27

DL

Inlet

Positioning of

outlets I ... IV


Gear ratioL1

Approx. [mm]5:1 52.3

15:1 62.625:1 62.675:1 73.1

125:1 73.1



1 2 3 4 5D ø 116L L1+67 L1+94 L1+121 L1+148 L1+175

6

EN6. Assembly

- 59 -951-180-082-EN

Version 01


6.3.3 Rotary drive, with bevel gear (RA3UA)

L

B

B/2

C

IIIV

IIII

52.5

27 27 28.5

9

ø54

73

22

4 h9

12.5

ø11 f7

ø13.5

ø8.5

8

16

20

4545105

22.8

60

27 27

ø15.2

Positioning of

outlets I ... IV

Outlet G1/8

Inlet G1/8



1 2 3 4 5L 120 147 174 201 228

B/2 64B 129C 70

Drive position B

Drive position A

EN 6. Assembly

- 60 -951-180-082-EN

Version 01

6.3.4 Electric motor drive, coaxial (RA1M)


IV

I

II

III

ø15.2

27 27

9

20.5127.5

244.5

80

404x ø7

6

63

100

120

227

129

460.5

27 27

*

*

*

* 2x M25x1,5

*

**35

*20*160

*250

*30Inlet G1/8 Outlet G1/8

Inlet

Positioning of outlets I ... IV


-See dimensions marked red

* = Motor dimensions for motor S No.: 84-5510-4802. For other motors, see data sheet from motor manufacturer.

6

EN6. Assembly

- 61 -951-180-082-EN

Version 01

6.3.5 Electric motor drive, with coaxial gear (RA2M)


IV

I

II

III

6

63

100

120

*

L180

404x ø7

ø15.2

27 27 28.5

9

21

216*

129

*

227

*

* 2x M25x1,5

27 27*

*20*160

*250

*35

*30

Gear ratioL1

Approx. [mm]

5:1 150.815:1 161.125:1 161.175:1 171.6

125:1 171.6


Inlet



-See dimensions marked red* = Motor dimensions for motor S No.: 84-5510-4802. For other motors, see data sheet from motor manufacturer.

EN 6. Assembly

- 62 -951-180-082-EN

Version 01

6.3.6 Electric motor drive, with bevel gear (RA3M)


II

IV I

III

12080

404x ø7

30

ø15.2

27

27

28.5

9

22.5

98.8

63

6

120

100

22.8

326*

129

*

227

*

2x M25x1,5*

27

27

*

*

*50

*20*160

*250

*35

**27

Inlet G1/8

Outlet G1/8


** with 5 pump elements




6

EN6. Assembly

- 63 -951-180-082-EN

Version 01

6.4 RA grease lubrication pumps with grease reservoir


6.4.1 Rotary drive, with bevel gear and grease reservoir (RA...3UA)

II

IVI

III

60

ø13.5 ø8.5

23

4 h

9

45

45

105 22.8

ø11

f7

12.5

8 16 20

73

27

27

13

L

D

Outlet G1/8


Drive position A Drive position B

Fill connection G3/8

*L2

21

0 (2

kg

rese

rvoi

r)

28

5 (4

.5 k

g re

serv

oir)

*L1

A

View A



[mm]D ø 240

L2 kg reservoir 117 mm4.5 kg reservoir 197 mm

*L1 2 kg reservoir 410 mm*L2 4.5 kg reservoir 485 mm* = Dimensions with three pump elements. The dimension is reduced by 27 mm for each pump element.

IMPORTANT NOTE! Reservoir with agitator, therefore only clockwise drive rotation permitted.

EN 6. Assembly

- 64 -951-180-082-EN

Version 01


6.4.2 Electric motor drive, with coaxial gear and grease reservoir (RA...2M)

120

240

IV I

II III

40

80

6

63

L1

**L2

10012013

2727

210 (2 kg Beh

älter)

ø160

129

176

*

*

227*

*

L

2x M25x1,5*

**L3

285 (4,5 kg Beh

älter)

*

* 300

* 420

*35



[mm]

L2 kg reservoir 1174.5 kg reservoir 197

**L2 2 kg reservoir L1+337**L3 4.5 kg reservoir L1+412


** = Dimensions with three pump elements. The dimension is reduced by 27 mm for each pump element.

Gear ratioL1

Approx. [mm]

5:1 17215:1 18225:1 18275:1 193

125:1 1193


Outlet G1/8


A

View A

IMPORTANT NOTE! Reservoir with agitator, therefore only counterclockwise drive rotation permitted.

6

EN6. Assembly

- 65 -951-180-082-EN

Version 01

6.4.3 Electric motor drive, with bevel gear and grease reservoir (RA...3M)


12080

404x ø7

302727

121.3

6 63

100

120 326*

129

*

227

*

*13

* 2x M25x1,5

*

L

**L2

**L3

120

240

* 420

* 35

IV I

II III22.8



[mm]

L2 kg reservoir 1174.5 kg reservoir 197

**L2 2 kg reservoir 460**L3 4.5 kg reservoir 535* = Motor dimensions for motor S No.: 84-5510-4802. For other motors, see data sheet from motor manufacturer.** = Dimensions with three pump elements. The dimension is reduced by 27 mm for each pump element.

IMPORTANT NOTE! Reservoir with agitator, therefore only clock-wise motor rotation permitted.

21

0 (2

kg

rese

rvoi

r)

28

5 (4

.5 k

g re

serv

oir)


Outlet G1/8


A

View A

EN 6. Assembly

- 66 -951-180-082-EN

Version 01

6.5 Assembly of RA multiline pumps

• Carefully prepare the flanging surface and

assembly holes (2x Ø 6.5 mm) for the re-

spective RA pump.

• Set up the customer-provided adapter

(coupling) according to the shaft exten-

sions of the RA pump.

• Clean the flanging surface.

)During subsequent assembly, it must be

possible to fit the shaft extension of the RA

pump into the coupling part (provided by

customer) without difficulty.

• If necessary, rotate the shaft extension of

the RA pump again according to the posi-

tion of the drive slot.

• Carefully place and align the RA pump on

the flanging surface.

• Insert cheese-head screws (2x, M6, rec-

ommended engagement depth 12 mm)

with lock washers into the installation

surface, apply to the RA pump and tighten

gently.

• Align the RA pump and tighten the

cheese-head screws crosswise with the

following tightening torque.

Torque M6 = 10 ±2 Nm

)Tightening torque table from the fitting

manufacturer (suction and delivery screw

union)

• Apply the suction and delivery screw

union to the RA pump and tighten with the

specified torques.

• Check to make sure that the RA pump

runs smoothly by rotating the drive shaft

several times (turn the drive train by

hand).

Requirement:

The mounting surface for the RA multline

pump must be free of dust particles, ma-

chining chips, rust, and paint residue. If nec-

essary, clean this surface prior to flanging.

6.5.1 RA rotary drive

(type: RA1UA; RA2UB; RA3UA; RA...3UA)

)See Chapters 6.3.1 to 6.3.3

See Chapter 6.4.1

)For the design with RA rotary drive, with

bevel gear and grease reservoir

(RA...3UA- Chapter 6.4.1), ensure suf-

ficient installation clearance between the

mounting surface and the grease res-

ervoir lid. The grease reservoir lid (pos-

sibly with fill level control) must be easily

removable.

6

EN6. Assembly

- 67 -951-180-082-EN

Version 01

6.5.2 RA electric motor drive

(type: RA1M; RA2M; RA3M; RA...2M;

RA...3M)

)See Chapters 6.3.4 to 6.3.6

See Chapters 6.4.2 to 6.4.3

)For the design with RA rotary drive, with

coaxial gear or bevel gear and grease

reservoir

(RAxxX2M/RAxxx3M- Chapter 6.4.2-

6.4.3), ensure sufficient installation

clearance between the mounting surface

and the grease reservoir lid. The grease

reservoir lid (possibly with fill level control)

must be easily removable.

• Set up the flanging surface and assembly

threads (M6) according to the respective

RA pump.

• Clean the flanging surface.

• Fastening material provided by customer

in corrosion-protected design:

Hexagon head screws, 4x acc. to

DIN EN ISO 4017, M6,

strength class 8.8

Washers, 4x acc. to ISO 7090, ID 6 mm,

strength class 200-HV

• Carefully place and align the RA multiline

pump on the flanging surface.

• Insert hexagon head screws into the

pump feet, apply the feet to thread of the

installation surface and tighten gently.

• Align the RA multiline pump, tighten

hexagon head screws with the following

tightening torque.

Torque M6 = 10 ±2 Nm

)Tightening torque table from the fitting

manufacturer (suction and delivery screw

union)

• Apply the suction and delivery screw

union to the RA multiline pump and tight-

en with the specified torques.

• Check to make sure that the RA multiline

pump runs smoothly.

EN 6. Assembly

- 68 -951-180-082-EN

Version 01

6.6 Electrical connection

WARNING

Electric shock Electrical connections for the product may only be established by qualiied ATEX personnel authorized to do so by the operator. The local electrical operating conditions and local regulations (e.g., DIN, VDE) must be observed.

WARNING

Electric shock / damage to pump

motor

The available mains voltage (supply

voltage) must match the speciica-

tions on the rating plate of the motor

or of the electrical components.

It may be connected only via a safe

galvanic isolation (PELV).

Check the fuse protection of the

electrical circuit.

Use only fuses with the prescribed

current intensity.

Monitoring equipment that has been

triggered (e.g., motor circuit breaker/

fuse) must not automatically switch

on again.

Observe the guidelines in DIN EN 60034-1

(VDE 0530-1) for operation at the limits of

the A ranges (combination of ±10% voltage

deviation and +3/-5% frequency deviation).

This applies especially with regard to heating

and deviations in operating parameters from

the ratings on the motor rating plate. The

limits must never be exceeded.

Be sure to connect the motor so as to guar-

antee a continuously safe electrical connec-

tion (no protruding

wire ends); use the assigned

cable end fittings (e.g., cable lugs, wire end

ferrules). Select connecting cables conform-

ing to DIN VDE 0100, taking into account

the rated current and the conditions of the

specific system (e.g., ambient temperature,

type of routing, etc. in accordance with DIN

VDE 0298-4).

6

EN6. Assembly

- 69 -951-180-082-EN

Version 01

WARNING

Mains connection for explosion-

proof motors

A mains connection in a potentially

explosive atmosphere requires a

motor circuit breaker or equivalent

protective device, such as a PTC

thermistor with triggering device.

This must be indicated on the motor

rating plate together with release

time tA.

IMPORTANT NOTE

The electrical characteristics of the motor,

such as rated voltage, rated frequency, and

rated current are specified on the mo-

tor rating plate and in the manufacturer's

operating instructions. The information

contained therein must be observed.

WARNING

Damage to pump motor/pump

When establishing the electrical

connection of the pump motor, be

mindful of the correct direction of

rotation. The direction of rotation of

the RA must match the arrow on

the motor.

IMPORTANT NOTE

Connect the power cables in such a way that no forces are transferred to the prod-uct (stress-free connection).

Connect the pump motor in accordance with

the motor connection data sheet from the

motor manufacturer. It is located in the mo-

tor’s terminal box (see Fig. 16).

IMPORTANT NOTE

Use only original cover fittings and original

cable glands from the motor manufacturer.

Improper work in the terminal box may

result in property damage. Follow / comply

with the following instructions to avoid this.

Do not damage components inside the

terminal box.

There must be no foreign bodies, con-

tamination, or humidity in the terminal

box.

Seal the terminal box dust-tight and

water-tight with the original seal.

Comply with the torques for cable glands

and other screws.

EN 6. Assembly

- 70 -951-180-082-EN

Version 01

6.6.1 Establish the motor connection

)See Figure 16

• Open the motor terminal box and

remove the motor connection data sheet.

• Connect the motor of the pump unit ac-

cording to the motor characteristics, the

specifications in the enclosed terminal

diagram (located in the terminal box of

the motor), the motor rating plate, and

the motor’s operating instructions.

• Mark the terminal diagram used on

the motor data sheet and enclose the

motor data sheet with these operating

instructions.

• Secure the multiline pump unit using

a motor circuit breaker matched to the

motor.

NOTE

Avoid running the pump dry.

In the action below, run the pump unit only

briefly in jogging mode.

• Operate the multiline pump unit only

briefly in jogging mode; while doing so:

Check the direction of motor rotation

Motor terminal strip, Fig. 16

Motor connection data sheet

Before closing the terminal box, always

check that:

Connections have been established in ac-

cordance with the terminal diagram

All terminal box connections are securely

tightened

All minimum values for the air gaps are

observed (> 8 mm to 500 V)

The interior of the terminal box is clean

and free of foreign objects

Unused cable entries are closed and

the plug screws with seal are secured

tightened

The seal in the terminal box lid is clean

and securely glued, and all seal surfaces

are in proper condition to ensure the pro-

tection class

6

EN6. Assembly

- 71 -951-180-082-EN

Version 01

Equipotential bonding, Fig. 17

1

Connection of a single

conductor below external

grounding bracket.

Connection with DIN cable lug

below external grounding bracket.

DIN 46 234

2

3

6.6.2 Establishing equipotential bonding connection

)See Figure 17

The product has an equipotential bonding

connection (screw M6). This is marked by the

symbol. The product and its equipoten-

tial bonding connection must be connected

to the equipotential bonding of the main

machine.

WARNING

Explosion protection

The cross-section of the standard

grounding cable to be supplied

by the customer must be at least

1.5 mm2.

• Loosen the clamping screw (2) on the

ground terminal (1).

• Insert the cable end of the standard

grounding cable (3) into the ground

terminal.

• Tighten the clamping screw (2).

EN 6. Assembly

- 72 -951-180-082-EN

Version 01

6.7 Electrical connection of ill level controls

IMPORTANT NOTE

Connect the cable for the ill level switch in a stress-free position.

IMPORTANT NOTE

Fill level controls K (E) and F

are mechanical equipment that do not

contain a potential ignition source.

The integrated floating contact can be

considered simple electrical equipment ac-

cording to DIN EN 60079-11, Section 5.7.

Fill level controls K (E) and F can be used

in conjunction with a power supply certi-

fied Ex i in zones 1 and 21 (intrinsically

safe).

WARNING

Explosion protection

The switching circuits of the fill

levels controls must be supplied

by an intrinsically safe circuit, e.g.,

through the installation of an ATEX-

compliant isolating amplifier by the

customer.

When selecting the isolating ampliier, keep in mind that the limit values for the ill level controls for internal voltage Ui, and internal

current intensity Ii must not be exceeded

(maximum output voltage Uo and maximum

output current Io of the isolating ampliier must be less than Ui and Ii).

Additionally, when selecting the cable length

(with inner inductance Lc and inner capaci-

tance Cc), the maximum permissible values

Lo and Co for the isolating ampliier must be considered (Lo must be greater than Lc + Li

and Co must be greater than Cc + Ci).

Keep in mind that the ill level control K (E) and ill level switch F are a combination of simple electrical equipment.

The proof of intrinsic safety is to be perfor-

med by the user.

6

EN6. Assembly

- 73 -951-180-082-EN

Version 01

6.7.1 Connection for ill level control K (E)

Fill level control K (E), Fig. 18

Switch position at minimum

Switch position above minimum

3

4

2

1

Fill level control K (E) and F

Design Reed contact, minimum monitoring

Form of contact Changeover

Contact type Reed contact

Voltage Ui 30 V DC

Current Ii 100 mA

Capacitance Ci 1 nF

Inductance Li 5 µH

Connection type EN 175301-803 plug


PIN Description of fill level control E

1 = + Supply voltage

2 = Signal output “above minimum”

3 = Signal output "minimum"

4 = PE Protective earth

)See Figure 18

Fill level control F, Fig. 19

6.7.2 Fill level control F

Switch position at minimum

34

2

1

Switch position at maximum

Switch position between

Minimum and maximum

PIN Description of fill level switch F

1 = + Supply voltage

2 = Signal output "Maximum"

3 = Signal output "minimum"

4 = PE Protective earth

)See Figure 19

34

2

1

34

2

1

3

4

2

1

Visual max.

indicator

Fill level control K, consisting of the electric fill level

switch (E) and a visual max. control.

EN 6. Assembly

- 74 -951-180-082-EN

Version 01

6.8 Lubrication lines

To ensure that the entire centralized lubrica-

tion system functions smoothly, observe the

following instructions when arranging the

suction line and the lubrication lines:

To prevent cavitation and thus early fail-

ure of the multiline pump, ensure that

the suction line is sufficiently large.

The suction line and thus the suc-

tion performance should be kept to a

minimum and the RA oil multiline pumps

should be under low admission pressure

(max. 1 bar).

The lubricant lines must be dimensioned

in accordance with the maximum operat-

ing pressure occurring in the RA multiline

pump used and the displacement of that

lubrication pump.

If possible, the lubricant line should be

laid with a rising gradient from the RA

multiline pump and be ventable at the

highest point on the lubrication line

system.

Lubricant distributors at the end of the

main lubricant line must be installed such

that the outlets of the lubricant distribu-

tors point upwards. If the system configu-

ration requires that the lubricant feeders

be arranged below the main lubricant

line, they should not be placed at the end

of the main lubricant line.

The pipes, hoses, shutoff valves, direc-

tional control valves, fittings, etc. that will

be used must be designed for the maxi-

mum operating pressure of the RA multi-

line pump, the permissible temperatures,

and the lubricants that will be delivered.

The lubrication line system also needs to

be protected from excessive pressure by

means of a pressure-limiting valve.

All components of the lubrication line

system such as tubes, hoses, shutoff

valves, directional control valves, fittings,

etc. must be carefully cleaned before as-

sembly. No seals should protrude inward

in the lubrication line system, as this

could hinder lubricant flow and introduce

contaminants into the lubrication line

system.

Lubrication lines should always be ar-

ranged so that air pockets cannot form

anywhere. Avoid changes in the cross-

section of the lubrication line from small

to large cross-sections in the direction

of flow of the lubricant. When the cross-

section does change, the transition

should be gentle.

6.8.1 Lubrication line arrangement

6

EN6. Assembly

- 75 -951-180-082-EN

Version 01

6.8.2 Connection of the lubrication lines

CAUTION

Risk of slipping Exercise caution when handling lubricants; immediately bind and remove any leaked lubricants.

Connect the lubricant lines in such a

way that no forces are transferred to

the product (stress-free connection).

All components of the centralized lubrication

system must be designed for:

The maximum pressure that occurs

The permissible temperature range

The displacement and the lubricant to

be fed

Secure the centralized lubrication

system against excessive pressure

using an appropriate pressure regu-

lating valve.

Observe the following installation instruc-

tions for safe and trouble-free operation.

Use only clean components and prefilled

lubrication lines.

The flow of lubricant in the lubrication

lines should not be impeded by the in-

corporation of sharp bends, angle valves,

or flap valves. Unavoidable changes in

the cross-section in lubrication lines

must have smooth transitions. Sudden

changes of direction should be avoided if

possible.

EN 7. First start-up

- 76 -951-180-082-EN

Version 01

7. First start-up

DANGER

Explosion

It must be ensured (checked) that

no potentially explosive atmo-

sphere is present. The applicable

ATEX Directives must be observed.

7.1 Conduct an insulation test

During first start-up and especially after

extended storage, the insulation resistance

of the winding against ground and between

the phases must be measured. The testing is

performed at the rated voltage, but at least

500 V.

CAUTION

Electric shock

Hazardous voltages occur at the ter-

minals during and immediately after

testing; do not touch the terminals

under any circumstances, and strictly

observe the operating instructions

for the insulation device!

Depending on rated voltage UN, the follow-

ing minimum values must be observed for a

winding temperature of 25°C:

Rated power PB in kW

Insulation resistance based on rated voltage in kΩ /V

1 < PB ≤ 10 6.3

10 < PB ≤ 100 4

100<PB 2.5

If the voltage falls below the minimum val-

ues, dry the winding properly until the insu-

lation resistance meets the required values.

The following initial set-up processes (Chap-

ters 7.1. to 7.5) must be performed accord-

ing to the sequence.

7

EN7. First start-up

- 77 -951-180-082-EN

Version 01

7.2 Venting the RA multiline pump and lubricant lines

CAUTION

Slipping hazard

Centralized lubrication systems

must always be free of leaks. Leak-

ing lubricant is hazardous due to the

risk of slipping and injury.

Beware of any lubricant leaking out

during assembly, operation, main-

tenance, or repair of centralized

lubrication systems. Leaks must be

sealed off without delay.

CAUTION

Follow the safety instructions

During the following startup of the RA

multiline pump and subsequent ad-

justment of the displacement (Chapter

7.3), observe the safety instructions

from the manufacturer of the ma-

chine/system into which the RA multi-

line pump has been installed.

Work on the RA multiline pump must

not be performed within the range of

moving parts.

IMPORTANT NOTE

Only ill using clean lubricant and an ap-propriate device. Contaminated lubricants can result in severe system malfunction. The lubricant reservoir must be illed without introducing bubbles.

)See Figure 20 and Fig. 21

The venting procedure requires that the RA

multiline pump (Chapter 6) and, if necessary,

the lubricant feed line and the lubricant lines

(Chapter 6.8.2) already be installed and con-

nected. The RA multiline pump is switched

off.

CAUTION

Injury

Operate only with properly installed

reservoir lid.

RA multiline pumps with grease

reservoir may only be put into

service with a properly installed

reservoir lid.


- 78 -951-180-082-EN

Version 01

7.2.1 Venting an RA grease multiline pump

• Depending on the RA design, switch on

the customer-supplied drive or RA mul-

tiline pump motor and check the pump's

direction of rotation

• Loosen the union nuts of the outlet screw

unions on the first pump element (viewed

from the drive) (4)

• Once the discharging oil is free of bub-

bles, tighten the union nut

• Perform the venting procedure sequen-

tially on the following pump elements

• Repeat the venting procedure at the end

of the respective lubrication lines until

bubble-free lubricant discharges

• Switch off the customer-provided drive

or the RA multiline pump motor

Venting an RA grease pump, Fig. 20

)See Figure 20

• Position the grease receiver tank (1) be-

low the RA multiline pump.

• Open the grease lubricant reservoir; in

versions with an attached grease reser-

voir, release the tension springs on both

sides and remove the lid with fill level

switch and grease follower plate (2)

• Fill the grease lubricant reservoir with

oil (viscosity class ISO VG 150 to ISO VG

420) up to about 1 cm above the bottom

strainer (3)

• Fill the grease lubricant reservoir with

grease up to the permitted level

• Close the grease lubricant reservoir, ap-

ply the lid with fill level switch and grease

follower plate to the grease lubricant

reservoir, and close using the tension

springs on both sides

1

2

3

1 cm

4

7

EN7. First start-up

- 79 -951-180-082-EN

Version 01

7.2.2 Venting an RA oil multiline pump

If necessary:

• Depending on the RA design, switch on

the customer-supplied drive or RA multi-

line pump motor

• Let the RA multiline pump run until the

discharging oil at the vent plug (3) is free

of bubbles.

• Tighten the vent plug (3).

• Loosen the union nuts of the outlet screw

unions.

• Once the discharging oil is free of bub-

bles, tighten the union nuts

• Repeat the venting procedure at the end

of the respective lubrication lines.

• Switch off the customer-provided drive or

the RA multiline pump motor

Venting an RA oil pump, Fig. 21

)See Figure 21

RA oil multline pumps often have a high

step-down ratio, resulting in a longer vent-

ing phase. To prevent the pump from possi-

bly running dry, the venting procedure must

be performed quickly.

• Position the oil receiver tank (1) below

the RA multiline pump.

• Fill the customer-supplied oil reservoir

(2) with oil.

)The following step is necessary only on

pump designs in which the fill level switch

is positioned above the pump.

)• Loosen the vent plug (3), hexagon socket,

WAF 5.

• Leave the vent plug (3) open until the

discharging oil is free of bubbles.

1

2

3


- 80 -951-180-082-EN

Version 01

7.3 Adjusting the displacement using displacement chart and continuous operating pressure

)See Figures 22 to 24

RA multiline pumps are factory-set to full

stroke. For oils and greases with a kinematic

operating viscosity of 140 mm2/s, the output

can be modified using the output chart be-

low (Fig. 23) and the continuous duty pres-

sure chart (Fig. 24).

For oils and greases outside this viscosity

range, the output should be set by deter-

mining measured values.

For adjustments to the displacement of mul-

tiple pump elements, start at the first pump

element (as viewed from the inlet).

The individual pump elements can be set to

no less than 1/3 capacity (setting 0 = approx.

1/3 capacity).

The adjusting plate (1) is adjusted when the

pump is at a standstill and after loosen-

ing the two cap nuts. A locking pin (2) fitted

between the two rotation direction scales

prevents any accidental changes of rotation

direction.

The displacement of the RA multiline pumps

for oils and greases (reference viscosity 140

mm2/s) as a function of drive speed and

step-down ratio is shown in Figure 2.

Figure 24 illustrates the achievable continu-

ous operating pressure as a function of op-

erating viscosity and piston stroke rate.

Piston stroke rate Z =

The maximum operating pressure varies

according to the operating viscosity of the

lubricating medium and the given piston

stroke rate.

Restrictions apply to the permitted operating

viscosity at piston stroke rates > 50 rpm.

• Turn off the pump.

• Slightly loosen the cap nuts (2x).

• Adjust the adjusting plate (1) using the

rotation direction scale (3) according to

the following description, the displace-

ment chart, and the continuous operating

pressure chart (pages 81/82).

• Evenly tighten the cap nuts (2x) with a

torque of 8 Nm.Drive speed [n]

Step-down ratio [l]

7

EN7. First start-up

- 81 -951-180-082-EN

Version 01

Displacement chart, Fig. 23

10 20 50 100 200 500 1000 1500

2000

cm3

min

+ou

tlet

cm3

min

+ou

tlet

Drive speed n [rpm]

Dis

plac

emen

t/lo

wer

limit

Dis

plac

emen

t/upper

limit

Adjusting the pump elements, Fig. 22

Rotation direction scale (3) for pump element,

pump rotation counterclockwise, clockwise

Adjusting plate (1)

Bore for tie-rod

with cap nut

Pin (2)

0 101

001

001

Vent

plug(4)

First pump

element


- 82 -951-180-082-EN

Version 01

Continuous duty pressure chart, Fig. 24

Kinematic viscosity v [mm2/s]

Max

. co

nti

nu

ous

oper

atin

g pr

essu

re [

bar]

Piston stroke rate z (rpm)

7

EN7. First start-up

- 83 -951-180-082-EN

Version 01

Checklist for first start-up

YES NO

If present, electrical connection established correctly

Mechanical connection established correctly

The performance characteristics for the aforementioned connections match the specifications in “Technical data”

All components such as lubrication piping and feeders are correctly mounted

Product is protected by a suitable pressure relief valve.

No apparent damage, contamination, or corrosion

Any dismantled protective and monitoring equipment is fully reinstalled and functional

Equipotential bonding fully present, properly connected, and electrically continuous

No accumulated dust present

7.5 Inspections during irst start-upNo unusual noises, vibrations, moisture accumulation, odors present

No undesired discharge of lubricant at connections (leakage)

Lubricant is fed without bubbles

The bearings and friction points requiring lubrication receive the planned lubricant volume

To ensure safety and functionality, the person specified by the operator is required to perform the following inspections. Any detected deficiencies

must be resolved immediately. The correction of deficiencies must be done exclusively by a specialist competent and authorized to do so.

7.4 Inspections before irst start-up

EN 8. Operation

- 84 -951-180-082-EN

Version 01

8. Operation

SKF products operate largely automatically.

The activities required during normal op-

eration are limited primarily to inspection

of the fill level, timely refilling of lubricant,

and cleaning the exterior of the product if

contaminated.

8.1 Filling with lubricant (RAxxx3UA; RAxxx2M; RAxxx3M)

)See Figure 25

RA pumps with attached grease reservoir

are equipped with a visual maximum level

gauge integrated into the grease reservoir

lid The gauge is to be used for the filling

process.

Only add lubricant via the fill

connection.

WARNING

Explosion


has to be at least 50 kelvin above the

maximum surface temperature of

the components. When filling via the

fill connection, the filling pump must

be connected to the equipotential

bonding connection of the pump.

Only fill using clean lubricant and an

appropriate device. Contaminated

lubricants can result in severe sys-

tem malfunction. The lubricant res-

ervoir must be filled without intro-

ducing bubbles.

To avoid possible air pockets when

filling, SKF recommends switching

on the RA multiline pump during the

filling process.

• Connect the equipotential bonding con-

nection of the filling pump to the equipo-

tential bonding connection of the multi-

line pump unit.

• Connect the filling hose on the fill con-

nection of the multiline pump.

• Let the filling pump run until the visual

fill gauge (maximum mark) on the grease

reservoir activates

• Turn off the filling pump.

• Remove the filling hose.

• Remove the equipotential bonding con-

nection between the filling pump and the

multiline pump unit.

8

EN8. Operation/ 9. Cleaning

9

- 85 -951-180-082-EN

Version 01

9. Cleaning

Accumulated dust must be eliminated at

regular intervals. These are to be defined by

the system/machine operator based on the

conditions and environmental influences.

The operator must monitor and document

adherence to the cleaning intervals.

9.1 Cleaning agents

Only cleaning agents compatible with the

materials can be used for cleaning (see

Chapter 2.3 for materials).

Always completely remove resi-

due of the cleaning agent on the

product and rinse with clear wa-

ter. This prevents the formation

of alkaline deposits.

DANGER

Explosion





Filling the RA pump, Fig. 25

Fill connection = G 3/8“

Visual maximum

fill gauge

EN 9. Cleaning

- 86 -951-180-082-EN

Version 01

WARNING

Electric shock

Perform cleaning work only on prod-

ucts that have been de-energized

and depressurized. Do not touch

cables or electrical components with

wet or moist hands. Use steam-jet

equipment or high-pressure cleaners

only in accordance with the IP protec-

tion class of the pump. Otherwise,

electrical components may be dam-

aged.

Cleaning, required personal protec-

tive gear, cleaning agents, and equip-

ment are in accordance with the cur-

rent operating rules of the operator.

9.4 RA multiline pump units with elec-tric motor drive

9.3 Interior cleaning

The interior normally does not need to be

cleaned. The interior of the product must be

cleaned if incorrect or contaminated lubri-

cant is accidentally filled. Please contact SKF

Customer Service.

9.2 Exterior cleaning

• Mark and secure wet areas.

• Unauthorized persons must be kept

away.

• Thoroughly clean all external surfaces

with a moist cloth.

The reservoir must be kept

closed during cleaning.

10

EN10. Maintenance

9

- 87 -951-180-082-EN

Version 01

10. Maintenance

WARNING

System pressure

Lubrication systems are pressur-

ized during operation. Lubrica-

tion systems must therefore be

depressurized before starting

assembly, maintenance or repair

work, or any system modifications

or system repairs.

WARNING

Electric shock

De-energize the product prior to

beginning work.

Electrical connections for the

product may only be established by

qualified personnel authorized to

do so by the operator. The electri-

cal operating conditions and local

regulations (e.g., DIN, VDE) must

be observed.

WARNING

Hot surface

The hot surface of a motor may

cause burns. Motor surfaces may

only be touched with appropriate

gloves or after the motor has been

shut off for an extended time.

SKF products are low-maintenance. All con-

nections and fittings must be regularly in-

spected for proper seating to ensure proper

function. If necessary, the product can be

cleaned using mild cleaning agents that

are compatible with the product's materials

(non-alkaline, non-soap).

For safety reasons, the product must be

disconnected from the power supply. Do not

allow any cleaning agent to enter the interior

of the product during cleaning.

It is normally not necessary to clean the inte-

rior of the product.

The interior of the product must be cleaned

if incorrect or contaminated lubricant is ac-

cidentally filled into the product.

Contact the SKF Service department if this

occurs.

10.1 RA multiline pump units with electric motor drive

10.2 General maintenance instructions

DANGER

Explosion





EN 10. Maintenance

- 88 -951-180-082-EN

Version 01

The RA multiline pumps are generally

maintenance-free.

Upstream and downstream filters must

be cleaned in time or replaced on a regu-

lar basis.

Check the readings on visual and electri-

cal fouling indicators.

Dirt deposits on the surface of the mo-

tor impair cooling and must be removed

regularly.

Fill greases and oils only via the fill

connection.

The RA multiline pump unit is virtually

maintenance-free. However, increased

wear can occur if the two cap nuts are

tightened unevenly. This can be identified

by reduced pump speed or sluggishness

of the pump shaft.

Individual parts cannot be swapped out

from one pump element to another. It is

not possible to put them back in the right

positions afterward.

If a synthetic oil is used as the pumped

fluid, consult the lubricant manufacturer

beforehand to find out whether it will cor-

rode the seals (Perbunan) and whether it

can be mixed with the previous lubricant.

Following maintenance or repair work,

vent the RA multiline pump and the en-

tire lubrication system (see Chapter 7.2.1

or 7.2.2).

IMPORTANT NOTE

Unauthorized alterations and the use of

non-original spare parts and accessories

are prohibited and nullify the statutory

warranty.

IMPORTANT NOTE

Only fill using clean lubricant. The purity of

the lubricants used is the decisive factor in

the service life of the pump and the lubri-

cated machinery elements.

Dismantling of the product or individual

parts thereof within the statutory warranty

period is prohibited and voids any claims.

10

EN10. Maintenance

- 89 -951-180-082-EN

Version 01

Maintenance checklist

Activity to be performed YES NO

If present, electrical connection established correctly

Mechanical connection established correctly

The performance characteristics for the aforementioned connections match the specifications in “Technical data”

All components such as lubrication piping and feeders are correctly mounted

Product protected by suitable pressure relief valve (opening pressure max. 90 bar)

No apparent damage, contamination, or corrosion

Any dismantled protective and monitoring equipment is fully reinstalled and functional

All warning labels on the product are present and in proper condition

No unusual noises, vibrations, moisture accumulation, odors present

No undesired discharge of lubricant at connections

Lubricant is fed without bubbles

The bearings and friction points requiring lubrication receive the planned lubricant volume

Varnishing is fully present; no parts of the varnishing are missing

Protective earthing system fully present, properly connected, and electrically continuous

No accumulated dust present

Careful and regular maintenance is required in order to detect and remedy possibly malfunctions in time.

The specific intervals must always be determined by the operator according to the operating conditions and regularly reviewed and adapted

where necessary. If necessary, copy the table for regular maintenance activities.

EN 10. Maintenance

- 90 -951-180-082-EN

Version 01

10.3 Electric motor maintenance schedule

Maintenance of the electric motor is performed in accordance with the motor operating instructions included in the scope of delivery for the

multiline pump units. Additionally, the following maintenance actions must be performed on the motor:

Maintenance work by a qualified ATEX electrician in accordance with the enclosed motor op-erating instructions:

Maintenance intervals in operating hours [oh]

Monthly First after ap-prox. 500 oh

Every 10,000 oh or once annually

Inspect the cooling air passages and surface of the motor for contamination (<5 mm). XX after max. 1/2

yearX

Check air inlets and outlets on the motor fan cowl for cleanliness. X X X

Check the motor fixing bolts for tightness. X

Check the terminal box fixing bolts for tightness. X

With motor running:

Electrical characteristics are met. X X

The insulation resistances of the windings are sufficiently large. X

If present, bearing insulation is implemented in accordance with the labels. X

Check the motor bearing temperatures for possible exceedance. X X

The running smoothness and operating noise of the machine have not changed/worsened. X X

Lines/insulating parts are in proper condition and are not discolored. X

Inspect rolling bearings and shaft seals, replace if necessary. X

Check the lines and insulating material X

Depending on motor type, grease quality, and motor bearings, grease may need to be replaced on the rolling bearings. See the operating instructions from the motor manufacturer.

X

11

EN11. Malfunctions

10

- 91 -951-180-082-EN

Version 01

11. Malfunctions, causes, and remedies

Malfunctions table

Malfunction Cause Remedy

Displacement vol-ume and/or delivery

pressure too low without supply lines

connected

Air in the pump element Vent and fill according to Chapters 7.2.1/7.2.2 and 7.3

Motor stopped Check electrical connections and voltagePump shaft is stuck (distortion, wear)Replace the defective motor if necessary

Pump elements set too low Set a higher delivery rate on the adjusting plate

Viscosity too low/too high Use an approved oil viscosity

Speed too low Increase the speed

Reservoir empty Fill the reservoir, vent the RA multiline pump; see Chapters 7.2.1/7.2.2 and 7.3

Displacement and/or pressure too low

Pump not vented Vent and fill according to Chapters 7.2.1/7.2.2 and 7.3

The direction of rotation of the pump shaft and the marking on the scale do not match

Set the adjusting plate to another scale value (Chapter 7.4) (partial dismantling required)

Wrong direction of motor rotation Check electrical connections and reverse if necessary

Great difference in back pressures Install screw unions with check valve

An unused outlet is sealed off Remove screw plug

Increase intake pipe Ø or shorten suction line

Fill with oil of permissible operating viscosity

Grease too stiff Use only approved grease

Motor does not startCheck electrical connections

Clean venting slots on motor, replace if necessary

EN 11. Malfunctions/ 12. Repairs

- 92 -951-180-082-EN

Version 01

12. Repairs

If repair is necessary, this must be done by

SKF Service (see masthead).

Malfunctions on the fill level switch

Malfunction Cause Remedy

Lubricant over

grease follower

plate

Seal on the grease fol-lower plate is leaking

• Replace the seal

Lubricant comes

out of the cover

when filling the

reservoir

No signal

Signal “max” ignored

Seal on the grease fol-

lower plate is leaking

• Check the cable connection; replace plug or cable if necessary

• Remove the excess grease

• Replace the seal

No signal from the

fill level control

Cable connection incorrect

or defective

Plug is disconnected

Grease follower plate is

tilted

Grease follower plate is

jammed

• Correct or repair the cable connection

• Connect the plug

• Straighten the grease follower plate and secure it to the contact rod

• Check the reservoir for dents and remove them if necessary

11.1 Malfunctions on the ill level control / the ill level switch

13

EN13. Shutdown, disposal

11

12

- 93 -951-180-082-EN

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13. Shutdown, disposal

13.1 Temporary shutdown

Temporary shutdown is performed by:

Switching off the main machine

Disconnecting the electrical and hydraulic

supply connections.

13.2 Permanent shutdown, disassembly

Permanent shutdown and disassembly of

the product must be planned properly by the

operator and conducted in compliance with

all applicable requirements.

13.3 Disposal

Countries within the European Union

Waste should be avoided or minimized to

the extent possible. The disposal of prod-

ucts contaminated with lubricant must be

performed by a recognized waste disposal

company in compliance with environmental

protection requirements and waste disposal

regulations as well as the requirements of

local authorities.

The producer of waste is respon-

sible for its specific classification,

as the European Waste Catalog

provides for different disposal keys

for waste that is the same but of

different origin.

Dispose of or recycle electrical

components in accordance with

WEEE Directive 2012/19/EU.

Plastic or metallic parts can be

disposed of as industrial waste.

Countries outside the European Union

Disposal is carried out according to the ap-

plicable laws and regulations of the country.

EN 14. Accessories

- 94 -951-180-082-EN

Version 01

14. Accessories

Accessories (ordered separately)

Designation Dimensions Order No.

Union nut Ø 4-R 1/8" Ø 6-R 1/8"

44-0709-2040 44-0709-2041

Double tapered ring Ø 4 Ø 6

44-0405-2002 406-001

Straight male coupling

Ø 4-R 1/8" K Ø 6-R 1/8" K Ø 8-R 1/8" K

404-403W 406-423W 408-423W

Banjo fitting Ø 4-R 1/8" Ø 6-R 1/8" Ø 8-R 1/8"

96-7004-0058 96-7006-0058 96-7008-0058

GE screw union with check valve

Ø 4-R 1/8" K Ø 6-R 1/8" K

24-2103-2933 24-2103-2927

Banjo fitting with check valve

Ø 4-R 1/8" K Ø 6-R 1/8" K

24-2106-2016 24-2106-2017

Banjo fitting 1) Ø 6-R 1/8" 24-2106-2390

Pressure relief valve 2) 1/8" 24-2103-3680

Pressure relief valve 3) Ø 6-R 1/8" K 24-2103-3681

1) With additional connection thread for screwing pressure regulating valves in directly.

2) Up to 90 bar, without pipe connection for RA pumps operated for short periods.

3) Up to 60 bar, with pipe connection for continuous duty.

SKF quick connectors

Adapter with cylindrical internal thread

Pipe Ø A Thread Order No.

4 G 1/8" 404-040-VS

6 G 1/8" 456-004-VS

Banjo fitting with cylindrical internal thread


4 G 1/8" 504-108-VS

6 G 1/8" 506-108-VS

Elbows with cylindrical internal thread


4 G 1/8 taper 514-018-VS

6 G 1/8 taper 506-511-VS

For SKF plug connector and associated tools, see Connector

Systems brochure, brochure No. 1-0103-1.

Fill connection with adapter Order No.

Fill connection 995-000-705

Adapter 267-001.47

Pressure relief valve with banjo fitting

90 bar pressure relief valve (DB)

24-2103-3680

Banjo fitting 24-2106-2390

G1/4

A

15

EN15. Appendix

14

- 95 -951-180-082-EN

Version 01

15. Appendix

VEM Declaration of Conformity, page 1, Fig. 26

15.1 Declaration of Conformity for motor, manufacturer VEM

EN 15. Appendix

- 96 -951-180-082-EN

Version 01

VEM Declaration of Conformity, page 2, Fig. 27

15

EN15. Appendix

- 97 -951-180-082-EN

Version 01

15.2 Associated supplier documentation

Associated supplier documentation - standard design

Supplied part Manufacturer Documentation type

Documentation number / version number

Motor ..........................................................................................

Operating

instructions .....................................

The Power of Knowledge EngineeringOver the course of more than a century, SKF has specialized in five fields of competence and acquired a wide range of application expertise. We utilize this experience to provide innovative solu-tions to OEMs and other manufacturers in practically all industrial sectors worldwide. Our five fields of competence are: Bearings and bearing units, seals, mechatronics (combining mechanical and electronic components to improve the performance of classic systems), and extensive services from 3-D computer stimulations and modern condition monitoring systems for high reliability to system management SKF is a leading global company and guarantees its customers uniform quality stan-dards and global product availability.

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Mechatronics Services

951-180-082-EN September 2018Version 01

SKF Lubrication Systems Germany GmbH Hockenheim Plant 2. Industriestrasse 4 DE - 68766 HockenheimTel.: +49 (0) 6205 27-0 Fax: +49 (0) 6205 27-101 E-mail: [email protected] www.skf.com/lubrication

ATEX multiline pumps of series RA Operating instructions ......ATEX multiline pumps of series RA....

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