Van Hanh May Nghien Xi Mang

Operating Instructions

LOESCHE Mill with Classifier

Type: LM 63.3+3 CS with LSKS 107 CSr

Project: P09961 Codeword: Tan Truong Clinker

Date of issue: 2011-07-09 / gu

Mill

with

Cla

ssifi

er

Document No: P09961-M10X00.980 en Rev. A Original Operating Instructions


2 P09961-M10X00.980 en Rev. A The copyright for this document and all appendices is reserved by LOESCHE GmbH

Copyright by LOESCHE GmbH Hansaallee 243 D-40549 Dsseldorf Federal Republic of Germany Phone: +49 (0)211 5353-0 Fax: +49 (0)211 5353-500 E-mail: [email protected] Internet: www.loesche.com


P09961-M10X00.980 en Rev. A 3 The copyright for this document and all appendices is reserved by LOESCHE GmbH

Table of Contents

List of Tables .................................................................................................................8

List of Figures................................................................................................................9

1 Liability and warrant conditions ........................................................................11 1.1 Intended use.............................................................................................................. 12 1.2 Reasonably foreseeable misuse ............................................................................... 14

2 About the instruction manual ............................................................................15 2.1 Subject matter of this instruction manual................................................................... 15 2.2 Plant identification ..................................................................................................... 16 2.3 Reference documents ............................................................................................... 16 2.4 Explanation of symbols used to identify text.............................................................. 16 2.5 Signal words .............................................................................................................. 17 2.6 Pictorial symbols........................................................................................................ 18 2.7 Conversion table........................................................................................................ 21 2.8 Abbreviations............................................................................................................. 22

3 Safety ...................................................................................................................23 3.1 Obligations of the operator ........................................................................................ 23 3.2 Obligations of personnel ............................................................................................ 23 3.3 Safety instructions for specific operating phases....................................................... 24 3.3.1 Transport ....................................................................................................................24 3.3.2 Assembly ....................................................................................................................24 3.3.3 Commissioning ...........................................................................................................24 3.3.4 Operation....................................................................................................................25 3.3.5 Maintenance ...............................................................................................................25 3.4 Safety requirements .................................................................................................. 26 3.4.1 Organisational issues .................................................................................................26 3.4.2 Requirements of personnel ........................................................................................26 3.5 Information about specific types of risk...................................................................... 27 3.5.1 Risks posed by electrical energy ................................................................................27 3.5.2 Risks posed by hydraulic and pneumatic energy .......................................................27 3.5.3 Risks posed by harmful gases, vapours and dusts ....................................................27 3.5.4 Risks posed by vibration and noise ............................................................................27 3.6 Duties of the operator ................................................................................................ 28 3.7 Safety checks ............................................................................................................ 29 3.8 Interfaces at the roller grinding mill............................................................................ 30 3.9 Operating and hazardous areas ................................................................................ 31



3.10 Shutdown procedure ..................................................................................................32 3.11 Safety instructions for the roller grinding mill components .........................................33 3.11.1 Safety instructions pertaining to the LOESCHE mill...................................................33 3.11.2 Safety instructions pertaining to the classifier ............................................................33 3.11.3 Safety instructions pertaining to the hydraulic systems..............................................34 3.11.4 Safety instructions pertaining to the swinging device.................................................35 3.12 Installed safety systems .............................................................................................36

4 Technical Data .....................................................................................................41 4.1 Technical Data, LOESCHE roller grinding mill ...........................................................41 4.1.1 Production data, LOESCHE roller grinding mill..........................................................42 4.1.2 Electrical data.............................................................................................................42 4.1.3 Water injection............................................................................................................43 4.1.4 Sealing air supply .......................................................................................................43 4.1.5 Ambient data ..............................................................................................................43 4.1.6 Coating and choice of colours ....................................................................................44 4.2 Technical Data, LOESCHE mill..................................................................................44 4.3 Technical Data, classifier ...........................................................................................45 4.4 Technical Data, hydraulic system...............................................................................46 4.4.1 Hydraulic cabinet HSLM.............................................................................................46 4.4.2 Hydraulic cabinet HSSW............................................................................................47 4.4.3 Hydraulic cabinet HSMS ............................................................................................47 4.5 Technical Data, swinging device ................................................................................48 4.5.1 Hydraulic cabinet, HSAV............................................................................................48 4.5.2 Swinging device cpl....................................................................................................49

5 Description of the machine ................................................................................50 5.1 Overview of the roller grinding mill .............................................................................50 5.1.1 Functional description ................................................................................................51 5.2 LOESCHE mill............................................................................................................53 5.2.1 Mill stand cpl...............................................................................................................54 5.2.2 Mill body cpl................................................................................................................57 5.2.3 Lining cpl. ...................................................................................................................59 5.2.4 Grinding bed sprinkler cpl...........................................................................................60 5.2.5 Table cpl.....................................................................................................................62 5.2.6 LM drive......................................................................................................................65 5.2.7 Grinding parts cpl. ......................................................................................................66 5.2.8 Roller (M) cpl. .............................................................................................................67 5.2.8.1 Roller rotation monitor cpl. .........................................................................................69 5.2.8.2 Slip-ring sealing cpl. ...................................................................................................70 5.2.9 Rocker arm (M) cpl.....................................................................................................71 5.2.10 Lever sealing (M) cpl. .................................................................................................73 5.2.11 Rocker arm monitor (M) cpl........................................................................................75 5.2.12 Roller (S) cpl...............................................................................................................77 5.2.12.1 Roller rotation monitor (S) cpl.....................................................................................79 5.2.13 Rocker arm (S) cpl. ....................................................................................................80 5.2.14 Lever sealing (S) cpl...................................................................................................81 5.2.15 Rocker arm monitor (S) ..............................................................................................82



5.3 Swinging device......................................................................................................... 84 5.3.1 Swinging the grinding roller ........................................................................................84 5.3.2 Swinging the support roller .........................................................................................85 5.3.3 Preparatory work for swinging out ..............................................................................86 5.3.4 Swinging-out process .................................................................................................86 5.3.5 Swinging-in process ...................................................................................................87 5.3.6 Lubrication line cpl. .....................................................................................................88 5.3.7 Seal-air piping.............................................................................................................89 5.3.8 Sealing air monitoring cpl. ..........................................................................................90 5.3.9 Vibration monitoring cpl. .............................................................................................91 5.3.10 Name plate .................................................................................................................92 5.4 Hydraulic system of the grinding roller....................................................................... 93 5.4.1 Hydraulic spring assembly - mode of operation..........................................................95 5.4.2 Spring characteristic ...................................................................................................96 5.4.3 Working pressure (spring stiffness) hydraulic bladder accumulator ........................96 5.4.4 Counterpressure function ...........................................................................................98 5.4.5 Roller relief pressure (RRP) partial load operation ..................................................98 5.4.6 Functions of hydropneumatic spring assembly system ..............................................99 5.4.7 Service functions ......................................................................................................101 5.5 Hydraulic system of the support roller ..................................................................... 102 5.5.1 Mode of operation.....................................................................................................103 5.5.2 Functions of hydraulic positioning device .................................................................103 5.6 Design and construction of the classifier ................................................................. 105 5.6.1 Classifier housing cpl................................................................................................106 5.6.2 Rotor cpl. ..................................................................................................................107 5.6.2.1 Upper bearing cpl. ....................................................................................................108 5.6.2.2 Lower bearing cpl. ....................................................................................................108 5.6.2.3 Classifier temperature sensor cpl. ............................................................................109 5.6.3 Classifier lining cpl. ...................................................................................................110 5.6.4 Classifier upper housing lining cpl. ...........................................................................111 5.6.5 Classifier drive cpl. ...................................................................................................112 5.6.6 Classifier lubrication line cpl. ....................................................................................113 5.6.7 Name plate ...............................................................................................................114

6 Transport ...........................................................................................................115 6.1 Scope of supply ....................................................................................................... 115 6.2 Delivery and packaging ........................................................................................... 115 6.2.1 Transport sketches ...................................................................................................116 6.2.1.1 Standard transport sketches for the LOESCHE Milll ................................................116 6.2.1.2 Standard transport sketches for the classifier...........................................................121 6.2.1.3 Standard transport sketches for the hydraulic cabinets............................................124 6.2.1.4 Standard transport sketch for the swinging device ...................................................124 6.2.2 Weight of the components........................................................................................125 6.3 Checking the delivery status.................................................................................... 127 6.4 Interim storage of supplied parts ............................................................................. 127 6.5 Transport to the installation site............................................................................... 128 6.5.1 Crane transport.........................................................................................................128 6.5.2 Transport with a fork-lift truck ...................................................................................128



6.6 Disposal of the packaging ........................................................................................129 6.7 Joining parts on the construction site .......................................................................129

7 Installation .........................................................................................................130 7.1 Installation reference documents .............................................................................130 7.2 Description of the assembly sequence.....................................................................131

8 Commissioning .................................................................................................132 8.1 Cold start-up.............................................................................................................132 8.1.1 Requirements ...........................................................................................................132 8.1.2 Applicable documents ..............................................................................................132 8.1.3 Extent of cold start-up ..............................................................................................133 8.1.4 Cold start-up sequence ............................................................................................134 8.2 Warm start-up...........................................................................................................135 8.3 Commissioning the hydraulic system.......................................................................136 8.4 Commissioning the hydraulic positioning device for support rollers (S) ...................136 8.5 Starting the mill when unfilled or filled ......................................................................137 8.5.1 Master rollers (M) .....................................................................................................137 8.5.2 Support rollers (S) ....................................................................................................138 8.5.3 Shutting down the mill during normal operation .......................................................138 8.5.4 Emergency Stop.......................................................................................................138 8.5.5 On-site operation......................................................................................................138

9 Operation ...........................................................................................................139 9.1 Local control panels .................................................................................................140 9.1.1 Operation..................................................................................................................140 9.2 Operating modes......................................................................................................140 9.2.1 Local operation.........................................................................................................140 9.2.2 Automatic mode .......................................................................................................141 9.3 Switching the grinding plant on and off ....................................................................141 9.3.1 Switching the plant on ..............................................................................................141 9.3.2 Starting the grinding circuit.......................................................................................141 9.3.3 Start sequence .........................................................................................................142 9.3.4 Operating the grinding plant .....................................................................................143 9.3.5 Switching the plant off ..............................................................................................144 9.3.6 Unlocking the Emergency Stop functions.................................................................145 9.4 Failure of power supplies .........................................................................................145 9.4.1 Switching the plant off in the event of a power failure ..............................................145 9.4.2 Switching the plant off in the event of a hydraulic-system failure.............................145 9.5 Electrical engineering...............................................................................................146

10 Troubleshooting ................................................................................................147 10.1 Customer service .....................................................................................................150

11 Maintenance.......................................................................................................151



11.1 General notes on maintenance works ..................................................................... 151 11.2 Inspection ................................................................................................................ 153 11.3 Cleaning .................................................................................................................. 154 11.4 Maintenance ............................................................................................................ 156 11.4.1 Lubrication ................................................................................................................156 11.4.2 General maintenance information for assemblies and machines.............................157 11.4.3 Maintenance: Mill stand cpl. .....................................................................................158 11.4.4 Maintenance: Mill body cpl. ......................................................................................159 11.4.5 Maintenance: Table cpl. ...........................................................................................160 11.4.5.1 Auxiliary equipment: table cpl. ..................................................................................163 11.4.6 Maintenance: Rocker arms.......................................................................................167 11.4.6.1 Auxiliaries: Rocker arm (M) cpl.................................................................................169 11.4.7 Maintenance: Roller..................................................................................................172 11.4.7.1 Auxiliaries: Roller (M) cpl. .........................................................................................175 11.4.7.2 Auxiliaries: Roller (S) cpl. .........................................................................................178 11.4.7.3 Auxiliary equipment: lifter cpl. ...................................................................................179 11.4.7.4 Auxiliary equipment: tyre profile ruler cpl..................................................................182 11.4.7.5 Auxiliaries: Oil drain device cpl. ................................................................................183 11.4.8 Maintenance: Spring assembly cpl. ..........................................................................185 11.4.8.1 Auxiliaries: Spring assembly (M) cpl.........................................................................187 11.4.8.2 Auxiliaries: Spring assembly (S) cpl. ........................................................................188 11.4.9 Maintenance: Hydraulic accumulators......................................................................190 11.4.9.1 Auxiliary equipment: Fill and test unit cpl..................................................................193 11.4.10 Maintenance: Hydraulic cabinets..............................................................................194 11.4.11 Maintenance: LM-Drive ............................................................................................196 11.4.12 Maintenance: Gearbox lubrication unit .....................................................................197 11.4.13 Maintenance: Central lubrication unit .......................................................................198 11.4.14 Maintenance: Sealing air system..............................................................................199 11.4.15 Maintenance: Piping system.....................................................................................200 11.4.16 Maintenance: Swinging device .................................................................................200 11.4.17 Maintenance: Grinding bed sprinkler cpl. .................................................................201 11.4.18 Maintenance: Classifier ............................................................................................202 11.5 Checks after maintenance work .............................................................................. 204

12 Spare parts ........................................................................................................205

13 Decommissioning, dismantling and disposal ................................................206 13.1 Qualifications of dismantling personnel ................................................................... 206 13.2 Requisite conditions for dismantling ........................................................................ 206 13.3 Carrying out dismantling and disposal..................................................................... 207

14 Supplier documentation ...................................................................................208

Index ...........................................................................................................................209



List of Tables Tab. 1: Conversion factors ......................................................................................................................... 21 Tab. 2: Abbreviations used......................................................................................................................... 22 Tab. 3: Shutdown procedure ...................................................................................................................... 32 Tab. 4: Characteristic data, LOESCHE roller grinding mill......................................................................... 41 Tab. 5: Limit dimensions, LOESCHE roller grinding mill ............................................................................ 41 Tab. 6: Production data, LOESCHE roller grinding mill.............................................................................. 42 Tab. 7: Electrical data................................................................................................................................. 42 Tab. 8: Water injection................................................................................................................................ 43 Tab. 9: Sealing air....................................................................................................................................... 43 Tab. 10: Ambient data ................................................................................................................................ 43 Tab. 11: Characteristic data, LOESCHE mill.............................................................................................. 44 Tab. 12: Characteristic data, classifier ....................................................................................................... 45 Tab. 13: Characteristic data, hydraulic cabinet HSLM ............................................................................... 46 Tab. 14: Characteristic data, hydraulic cabinet HSSW .............................................................................. 47 Tab. 15: Characteristic data, hydraulic cabinet HSMS............................................................................... 47 Tab. 16: Characteristic data, swinging device............................................................................................ 48 Tab. 17: Characteristic data, hydraulic cabinet HSAV ............................................................................... 48 Tab. 18: Characteristic data, swinging device cpl. ..................................................................................... 49 Tab. 19: Roller grinding mill, transport weights of components ............................................................... 126 Tab. 20: Fault, Cause, Remedy table....................................................................................................... 149 Tab. 21: Function checks, inspection intervals......................................................................................... 153 Tab. 22: Cleaning intervals....................................................................................................................... 155 Tab. 23: Maintenance table, mill stand..................................................................................................... 159 Tab. 24: Maintenance table, mill body...................................................................................................... 159 Tab. 25: Maintenance table, table ............................................................................................................ 162 Tab. 26: Maintenance table, rocker arm................................................................................................... 168 Tab. 27: Maintenance table, roller ............................................................................................................ 174 Tab. 28: Maintenance table, spring assembly.......................................................................................... 186 Tab. 29: Maintenance table, bladder accumulator ................................................................................... 191 Tab. 30: Maintenance table, hydraulic cabinet......................................................................................... 195 Tab. 31: Maintenance table, LM drive ...................................................................................................... 196 Tab. 32: Maintenance table, gearbox lubricating unit............................................................................... 197 Tab. 33: Maintenance table, central lubricating unit................................................................................. 198 Tab. 34: Maintenance table, sealing air system ....................................................................................... 199 Tab. 35: Maintenance table, swinging device .......................................................................................... 200 Tab. 36: Maintenance table, grinding bed sprinkler ................................................................................. 201 Tab. 37: Maintenance table, classifier ...................................................................................................... 203



List of Figures Fig. 1: LOESCHE roller grinding mill, assembly groups overview ............................................................. 12 Fig. 2: LOESCHE roller grinding mill interfaces, schematic sketch............................................................ 30 Fig. 3: LOESCHE roller grinding mill overview........................................................................................... 50 Fig. 4: Flow of grinding material through mill, pictorial representation....................................................... 51 Fig. 5: LOESCHE Mill, assembly overview ................................................................................................ 53 Fig. 6: Mill stand cpl.................................................................................................................................... 54 Fig. 7: Mill body cpl..................................................................................................................................... 57 Fig. 8: Lining cpl. ........................................................................................................................................ 59 Fig. 9: Grinding bed sprinkler cpl................................................................................................................ 60 Fig. 10: Table cpl. ....................................................................................................................................... 62 Fig. 11: LM drive cpl., schematic sketch .................................................................................................... 65 Fig. 12: Roller (M) cpl. ................................................................................................................................ 67 Fig. 13: Roller rotation monitor cpl. ............................................................................................................ 69 Fig. 14: Slip-ring sealing cpl. ...................................................................................................................... 70 Fig. 15: Rocker arm cpl. ............................................................................................................................. 71 Fig. 16: Lever sealing cpl............................................................................................................................ 73 Fig. 17: Rocker arm monitor cpl. ................................................................................................................ 75 Fig. 18: Roller (S) cpl.................................................................................................................................. 77 Fig. 19: Roller rotation monitor (S) cpl., schematic sketch......................................................................... 79 Fig. 20: Rocker arm (S) cpl......................................................................................................................... 80 Fig. 21: Lever sealing (S) cpl...................................................................................................................... 81 Fig. 22: Rocker arm monitor (S) cpl. .......................................................................................................... 82 Fig. 23: Swinging the grinding roller ........................................................................................................... 84 Fig. 24: Swinging the roller (S) ................................................................................................................... 85 Fig. 25: Sealing air system ......................................................................................................................... 89 Fig. 26: Sealing air monitoring cpl. ............................................................................................................. 90 Fig. 27: Vibration monitoring cpl., schematic sketch .................................................................................. 91 Fig. 28: Name plate .................................................................................................................................... 92 Fig. 29: Interplay, working pressure/counterpressure system.................................................................... 95 Fig. 30: Diagram: Spring stiffness .............................................................................................................. 97 Fig. 31: Spring assembly (S) cpl. ............................................................................................................. 102 Fig. 32: Classifier, assembly overview ..................................................................................................... 105 Fig. 33: Classifier housing cpl., schematic sketch.................................................................................... 106 Fig. 34: Rotor cpl. ..................................................................................................................................... 107 Fig. 35: Upper bearing cpl. ....................................................................................................................... 108 Fig. 36: Lower bearing cpl. ....................................................................................................................... 108 Fig. 37: Schematic sketch of classifier temperature sensor, cpl. ............................................................. 109 Fig. 38: Classifier lining cpl....................................................................................................................... 110 Fig. 39: Classifier upper housing lining cpl............................................................................................... 111 Fig. 40: Classifier drive cpl. ...................................................................................................................... 112 Fig. 41: Schematic sketch of the classifier lubrication line, cpl. ............................................................... 113 Fig. 42: Name plate .................................................................................................................................. 114 Fig. 43: Transport sketch, foundation frame............................................................................................. 116 Fig. 44: Transport sketch, pedestal (left fig.), gearbox baseplate ............................................................ 116 Fig. 45: Transport sketch, bridge.............................................................................................................. 117 Fig. 46: Transport sketch, ring duct.......................................................................................................... 117 Fig. 47: Transport sketch, table (left fig.), gas duct .................................................................................. 118



Fig. 48: Transport sketch, mill body.......................................................................................................... 118 Fig. 49: Transport sketch, cover ............................................................................................................... 119 Fig. 50: Transport sketch, rocker arm (M) (left fig.), rocker arm (S)......................................................... 119 Fig. 51: Transport sketch, roller (M) (left fig.), roller (S) ........................................................................... 120 Fig. 52: Transport sketch, foot-bridges..................................................................................................... 120 Fig. 53: Transport sketch, classifier upper housing.................................................................................. 121 Fig. 54: Transport sketch, classifier lower housing .................................................................................. 121 Fig. 55: Transport sketch, frame............................................................................................................... 122 Fig. 56: Transport sketch, grit funnel ........................................................................................................ 122 Fig. 57: Transport sketch, Rotor ............................................................................................................... 123 Fig. 58: Transport sketch, motor console ................................................................................................. 123 Fig. 59: Transport sketch, hydraulic cabinets........................................................................................... 124 Fig. 60: Transport sketch, cylinder swinging device................................................................................. 124 Fig. 61: Grinding plate segment alignment............................................................................................... 161 Fig. 62: Auxiliary equipment: table cpl...................................................................................................... 163 Fig. 63: Support cpl................................................................................................................................... 165 Fig. 64: Flange-sleeve connection............................................................................................................ 169 Fig. 65: Taper-pin connection................................................................................................................... 170 Fig. 66: Auxiliary equipment: roller (M) cpl. .............................................................................................. 175 Fig. 67: Auxiliary equipment: roller cpl., roller bearing removal................................................................ 176 Fig. 68: Auxiliary equipment: roller (S) cpl................................................................................................ 178 Fig. 69: Lifter cpl. ...................................................................................................................................... 179 Fig. 70: Changing the tire ......................................................................................................................... 180 Fig. 71: Tire profile ruler cpl. ..................................................................................................................... 182 Fig. 72: Oil drain device (M) cpl................................................................................................................ 183 Fig. 73: Oil drain device cpl. ..................................................................................................................... 184 Fig. 74: Dismantling the spring pin ........................................................................................................... 188 Fig. 75: Assembling the spring pin ........................................................................................................... 189


Liability and warrant conditions


1 Liability and warrant conditions

Our "General terms and conditions of sale and delivery" apply. Warranty and liability claims for material damage and personal injury will not be accepted if they can be attributed to one or more of the following causes: Failure to use the machine as intended (see chapter "1.1 Intended use", on

page 12) Improper mounting, putting into operation, running and maintenance of the

machine Operation of the machine when safety switching devices are defective or

when safety relays and protective devices have been improperly fitted or are not in perfect working order

Non-compliance with the information in the instruction manual with regard to the transportation, storage, assembly, commissioning, operation, maintenance and repair of the machine

Unauthorised changes to the design and structure of the machine Unauthorised technical modifications (e.g. drive ratios, output and/or speed) Failure to monitor machine parts which are prone to wear Improperly completely repairs Catastrophes attributable to extraneous causes and force majeure Deployment of untrained personnel




1.1 Intended use

1

2

3

4 5

35

37

32

33

34

31

30

6

7

9

8

10

12

14

15

16

17 18

19

1320

21

22

23

25

26

27

28

24

29

36

38

1100

1219

Fig. 1: LOESCHE roller grinding mill, assembly groups overview




Key 1 Classifier drive cpl. 14 Spring assembly (M) cpl. 27 Lining cpl. 2 Classifier platform cpl. 15 Ring pipeline cpl./

Connecting pipeline cpl. 28 Mill body cpl.

3 Raw material inlet 16 LM-drive cpl. 29 Classifier housing cpl. 4 Star feeder 17 Hydraulic oil supply, grinding rollers 30 Rotor support cpl. 5 Hydraulic oil supply, support rollers 18 Swinging device 31 Lining cpl. 6 Sealing air pipeline cpl. 19 Table cpl. 32 Lower bearing cpl. 7 Lever sealing (M) cpl. 20 Grinding parts cpl. 33 Guide vane carrier cpl. 8 Roller (M) cpl. 21 Roller (S) cpl. 34 Rotor 9 LM lubrication line 22 Lever sealing (S) cpl. 35 Upper bearing cpl. 10 Roller rotation monitor (M) cpl. 23 Rocker arm monitoring (S) cpl. 36 Classifier upper housing lining cpl. 11 Rocker arm monitoring (M) cpl. 24 Roller rotation monitor (S) cpl. 37 Finished material outlet 12 Rocker arm (M) cpl. 25 Rocker arm (S) cpl. 38 Classifier lubrication line cpl. 13 Mill stand cpl. 26 Spring assembly (S) cpl.

The LOESCHE roller grinding mill serves exclusively to grind grinding stock in accordance with the specifications given in the chapter "Technical Data. The grinding stock is fed to the roller grinding mill in metered amounts via a conveyor. The grinding process is generated by pressure and friction under the effect of a hydropneumatic roller spring assembly. The ground stock is thrown outwards by centrifugal force and carried by the gas flow to the classifier. The finished product passes through the classifier with the desired fineness, is discharged and dispatched for further use. This LOESCHE roller grinding mill is intended for commercial use and was developed, designed and constructed solely for this purpose.

WARNING Personal and/or machine damage! This machine is intended solely for the purpose described above. Any other use or modification of the machine without the written consent of the manufacturer is deemed unacceptable. The manufacturer accepts no liability for damage resulting from such use. The risk is borne solely by the operator. The machine may only be put into operation if the superior system in which it is being installed complies with regulations and once there is an assurance that all safety switching devices have been assembled and are fully functional.

Intended use also includes observation of the manufacturer's instructions regarding the assembly, disassembly and reassembly, commissioning, operation and maintenance (inspection, servicing, repair) of the roller grinding mill.

Note on application of the EC Directive EMC 2004/108/EEC: According to DIN EN 61000-6-4 (Generic standards - Emitted interference for industrial environments) the machine may not be used in residential, business or industrial areas or in small businesses unless it also satisfies the standard DIN EN 61000-6-3 (Emitted interference).




1.2 Reasonably foreseeable misuse

Use of the roller grinding mill to grind materials contaminated by packaging materials is prohibited. It is not permitted to operate the roller grinding mill without the metal separator connected upstream.


About the instruction manual


2 About the instruction manual

2.1 Subject matter of this instruction manual

This instruction manual describes all necessary tasks and activities relating to the machine. These include transportation, assembly, operation, troubleshooting and maintenance. A separate document describes the electrical equipment and the electrical installation work. It also features the corresponding drawings. The instruction manual contains information which is important for the safe, correct and efficient running of the machine. Observation of this information will help to prevent risks, avoid repairs and downtimes as well as increase the reliability and service life of the machine(s). This instruction manual must be supplemented with information derived from applicable national regulations governing accident prevention and the protection of the environment. The instruction manual must be read and used by everyone charged with working with/on the machine. The instruction manual must be available and accessible at all times in the machine's place of use. You must read this instruction manual before using the machine(s).

Compliance with the safety instructions is mandatory. You must also comply with the binding regulations in force in the country of

use with regard to accident prevention and acknowledged rules for safe and proper working.

The tasks described in this instruction manual are listed in such a way as to be understood in the chapters Control and Operation by an instructed person, in the chapters Transportation, Erection and Assembly, Maintenance,

Fault/Cause/Rectification by a skilled worker. The chapters Transportation, erection and Assembly, Maintenance, Fault/Cause/Rectification are intended for skilled workers only. Tasks described in this chapter may only be carried out by skilled workers. Instructed person A person who has been instructed or trained by a skilled worker in the tasks assigned to him/her and the potential hazards of improper operation, in addition to the necessary safety devices and safety measures. Skilled worker A skilled worker is a person who, by combining his or her specialist training, knowledge and experience with awareness of applicable standards, is able to assess the tasks with which or he she has been assigned and identify potential hazards (definition based on EN 60204-1). The figures in this manual have been provided for illustrative purposes only. The specific drawings supplied with each purchase are your primary source of reference.




2.2 Plant identification

The information in this instruction manual applies only to the machine whose type designation is give on the title page. The name plate containing the machine data is attached to the machine (for position, see Technical Drawings). For all enquiries, it is important to specify correctly: the designation the type designation This is the only way of ensuring that your enquiry is dealt with quickly and correctly.

2.3 Reference documents

Additional documents should be referred to in conjunction with this instruction and installation manual; please refer to the list in the superordinated main table of contents. We do not accept liability for damage due to non-compliance with the information in this instruction manual. The scope of the product includes this manual and all associated reference documents. Should ownership of the product be transferred, this instruction manual,

along with all associated reference documents, must be handed over to the new owner.

2.4 Explanation of symbols used to identify text

Symbol identifying a list of items In the text, each item in a standard list is preceded by a dash. Symbol identifying an instruction Instructions describing actions to be carried out are preceded by bullet

points. Actions must be completed in the sequence described. Symbol identifying separate documents The opened book indicates additional separate documents. Cross-references Cross-references are links either to a section of text in this instruction manual or to another document. In the case of cross-references to a section of text, either the chapter, a figure number or a page number will be indicated. In the case of cross-references to another document, a document name, a drawing number or a document number will be indicated (e.g. see supplier documentation).




2.5 Signal words

DANGER Indicates a hazardous situation which, if not avoided, WILL result in death or serious injury.

WARNING Indicates a hazardous situation which, if not avoided, COULD result in death or serious injury.

CAUTION Indicates a hazardous situation which, if not avoided, COULD result in minor or moderate injury.

NOTICE Indicates a hazardous situation which, if not avoided, COULD result in property damage.

Note Indicates useful or additional information for easy and safe usage of the machine(s) and the manual.




2.6 Pictorial symbols

Please note the following symbols which have been used in the manual to identify safety information:

Safety symbols comprise a warning triangle and a symbol against a yellow background. In the instruction manual, the following symbols have been used to identify risks to personal safety:

DANGER Direct risk to life and limb!

DANGER Toxic substances!

DANGER Risk of electrocution!

DANGER Risk of falling!

DANGER Explosive materials!

DANGER Suspended loads!

CAUTION Hot surfaces!




CAUTION Risk of tripping!

WARNING Risk of injuries to the hands!




Other signs:

NOTICE Possible risk to machine!

Note Useful information and special notes.

Note on environmental care! Useful information and special notes:

Switching symbol prompts the user to interrupt the power supply.

Lock symbol prompts the user to lock a switch state.

Book symbol Notice to additional documents




2.7 Conversion table

The following conversion factors can be used to convert metric values into US units:

Convert from into Multiply by

mm inch 0.3937

inch mm 25.4

m ft 3.208084

ft m 0.30479

m2 ft2 10.76391

cm2 in2 0.155

cm3 in3 0.061

l gal (US) 0.264178

kg lbs 2.204622

lbs kg 0.45359

t lbs 2204.622

lbs t 0.0004536

kN lbf 224.809

kW HP 1.34

daN/cm2 lbf/in2 14.50378

lbf/in2 daN/cm2 0.06895

bar psi 14.50378

psi bar 0.06895

m/s ft/s 3.28084

Nm lbf ft 0.7375

C F 1.8 x C+32

F C (F-32)/1.8

t/m2 lbs/ft2 204.8

m2/t ft2/lbs 0.04882 Tab. 1: Conversion factors




2.8 Abbreviations

The following abbreviations are used in this manual:

Abbreviation Stands for

HSLM Hydraulic cabinet LOESCHE mill

HSMS Hydraulic cabinet grinding roller lubrication

HSSW Hydraulik cabinet support-roller

HSAV Hydraulic cabinet swinging-out device

HSBF Hydraulic cabinet filling unit (optional)

M-... or (M) Master-... (e. g. M-roller, rocker arm (M), etc.)

S-... or (S) Support-... (e. g. S-roller, spring assembly (S), etc.)

PPE Personal protective equipment

Fig. Figure

Tab. Table Tab. 2: Abbreviations used


Safety


3 Safety

The machine has been designed and built in accordance with the state of art and acknowledged safety engineering practice. However, its use can pose risks to the life and limb of its user and/or third parties. There is also the potential for damage to the machine or other equipment and property. No changes, additions or conversions may be made to the machine without the manufacturer's approval. This also applies to welding on load-bearing parts. Written permission must be obtained from the manufacturer for all conversion work.

3.1 Obligations of the operator

The operator is obliged: Only to use trained personnel equipped with personal protective equipment

who are familiar with the fundamental regulations governing occupational safety and accident prevention and have been instructed in the running and operation of the machine.

Only to use personnel who have read the safety chapter and the safety instructions in this instruction manual and have signed a declaration indicating their understanding of their content.

To have personnel undergo annual instruction in occupational safety and accident prevention

To comply with legal requirements regarding operational safety and reliability

To carry out regular checks to ensure that personnel are working in a way which exhibits an awareness of safety

3.2 Obligations of personnel

All persons charged with working on/with the machine are obliged: To comply with the fundamental regulations governing occupational safety

and accident prevention To read the safety chapter and the safety instructions in this instruction

manual and sign a declaration indicating their understanding of their content To comply with the safety instructions in the supplier documentation To keep all safety and hazard instructions on the machine in a legible

condition To keep transport routes clear and free from obstacles


Safety


3.3 Safety instructions for specific operating phases

3.3.1 Transport

Only use a suitable transport vehicle with sufficient load-bearing capacity. Secure the load safely. Use designated rigging points. When loading equipment, only use lifting devices and load-bearing

equipment with sufficient load-bearing capacity. Designate a competent banksman for lifting operations. Machine parts must only be lifted properly and with lifting devices as per the

specifications in the instruction manual (rigging points for load-bearing equipment, etc.).

Use safe lifting devices bearing the CE mark.

3.3.2 Assembly

Secure the areas in which work will be taking place to prevent unauthorised access.

Co-ordinate assembly work with all companies involved. Ensure that all auxiliary equipment used (e.g. ladders) is safe. Risk of

falling! When carrying out assembly work overhead, use ladders/scaffolding and

working platforms which have been tested for safety. Do not use machine parts as a means of accessing overhead locations!

Do not conduct welding current through bearings!

3.3.3 Commissioning

Make sure that prior to powering up machines, these cannot pose a risk of potential injury. the safety instructions pertaining to cold start-up and the supplier

documentation are read, digested and followed. working areas are protected. edges are made safe. all auxiliary equipment used (e.g. ladders or safety harnesses) is safe. Risk

of falling! ear defenders are worn in the event of noise pollution in excess of 85 dB(A). hazardous areas are closed off to unauthorised persons. prior to the test run, an acoustic signal is issued to warn personnel if a start-

up test is only possible with the safety devices inactive. the main switch is turned off during necessary retrofit or adjustment

operations and that machines are secured against unintentional powering-up.

the activities during commissioning are carried out by qualified skilled personnel only.

safety distances are observed. machine parts are not used as a means of accessing overhead locations. safety devices are removed only when the machine is at a standstill. a warning is given before safety devices are shut down for start-up work,

and that immediately after this work is completed these safety devices are reinstalled are restarted.


Safety


3.3.4 Operation

Prior to power-up, check that this cannot pose a risk of personal injury. Check the machine at least once per shift for any visible external evidence

of damage and check that safety switching devices are in perfect working order. If you detect a problem, stop the machine immediately and rectify the cause.

Only operate the machine if all safety switching devices are in place and fully operational.

Do not switch off or remove exhaustion devices or ventilation equipment when the machine is running.

In the event of malfunctions, stop and secure the machine immediately. Have the causes of such problems rectified immediately.

3.3.5 Maintenance

Carry out prescribed setting, maintenance and inspection work at the required intervals.

Inform operators before starting service and maintenance work. Stop the infeed of materials. Seal off the area in and around which work will be carried out. The machine must be stopped and disconnected from the voltage supply

prior to commencing cleaning, service and maintenance work. Secure the machine to prevent restarting.

Lock the main switch and remove the key. Affix a sign warning against restarting.

Depressurise pneumatic, vapour pressure and hydraulic equipment and let off any remaining pressure.

Secure all system components and operating media (e.g. compressed air and hydraulics) upstream and downstream of the machine to prevent accidental starting.

Use suitable arresting devices to lock moving parts. When replacing larger components, rig and secure them carefully to lifting

devices. Do not stand or work under suspended loads. Check that all screwed union connections are tight. Once maintenance work is complete, check that all safety switching devices

are in working order. When carrying out assembly work overhead, use ladders/scaffolding and

working platforms which have been tested for safety. Do not use machine parts as a means of accessing overhead locations! Safety harnesses to protect against falling must be worn when carrying out maintenance work overhead.

There must be no evidence of soiling, oil, grease, snow and ice on handles, steps, railings, resting places, platforms, ladders, etc.

Any machine parts which are not in perfect working order must be replaced immediately.

Only original spare and wear parts may be used. If third-party products are used, we cannot guarantee that they will have been designed and built to provide the requisite levels of performance and safety.

Ensure that all auxiliary equipment used (e.g. ladders) is safe. Risk of falling Use safe lifting devices bearing the CE mark.


Safety


3.4 Safety requirements

The machine's safety switching devices are described in chapter 3.12 Installed safety systemson page Seite 36.

Maintain the requisite safety clearances specified. The fitting of any part components for safety switching devices resourced by

the operator is solely his or her responsibility. Isolating or non-isolating safety switching devices might be required in

addition to those supplied with the machine. Safety switching devices must not be removed until after the machine has

been stopped and secured against restarting. Before taking safety switching devices out of service (e.g. for maintenance

work), issue warnings accordingly and replace such devices or put them back into service immediately on completion of this work. Safety switching devices must also be checked prior to operation being resumed.

Safety switching devices must be checked regularly to ensure that they are in full working order. Inspection intervals and procedures must be complied with and logged, see chapter 3.12 Installed safety systemson page Seite 36.

Comply with the safety instructions in the supplier documentation.

3.4.1 Organisational issues

The operator must provide suitable personal protective equipment. The instruction manual must be supplemented by additional instructions

including information about supervision and reporting duties taking account of individual operating conditions, e.g. with regard to how work is organised, operational sequences, the deployment of personnel, etc.

Personnel working on or with the machine must tie back long hair and must not wear loose clothing or jewellery (including rings). Non-compliance with this requirement could result in injuries due to becoming suspended from or dragged into the machine.

Check safety switching devices regularly to ensure that their inspections are up to date, see chapter 3.12 Installed safety systemson page Seite 36.

Make sure that you are aware of the possible means of reporting and fighting fires.

Specify the type of fire-extinguishing equipment to be used. Provide information about where fire extinguishers are located and how to

use them. Provide instructions for emergency procedures.

3.4.2 Requirements of personnel

Only personnel who have undergone training and instruction may work on the machine.

Relevant experience is required for work involving each of the assembly, operation, refurbishing, maintenance and service of the machine.

Make sure that only personnel authorised to do so work on the machine. Personnel must wear personal protective equipment. The supervisor must

check that this requirement is met. Responsibilities in respect of the assembly, operation, refurbishing,

maintenance and service of the machine must be clearly defined.


Safety


Personnel undergoing training on the machine must be under the permanent supervision of an experienced worker.

3.5 Information about specific types of risk

3.5.1 Risks posed by electrical energy

Only skilled electricians working in compliance with correct electrical engineering practice are permitted to work on electrical installations and equipment.

Be aware of the possibility of damage affecting electrical equipment and carry out regular inspections accordingly. Risk due to loose connections and scorched cables. This problem must be rectified immediately.

The switching cabinet must be kept locked at all times. Access must only be permitted to authorised personnel who are in possession of a key or tool.

When working on live parts, seek the assistance of a second person who, in the event of an emergency, will be able to activate the emergency stop or main switch to disconnect the voltage supply.

In the event of faults affecting the power supply, the machine must be shut down immediately.

3.5.2 Risks posed by hydraulic and pneumatic energy

Depressurise system sections and pressure lines (hydraulic, compressed air) to be opened in the context of repairs prior to starting work.

Only personnel with specialist knowledge and experience of hydraulics are permitted to work on hydraulic equipment.

Hydraulic and compressed air lines must be laid and assembled correctly. Do not mix up connections! Valves and fittings and the length and quality of flexible hoses must meet requirements.

All lines, hoses and couplings must be checked regularly for leaks and visible evidence of external damage. Damage must be made good immediately. Leaks can lead to injuries and fires.

Even if there is no visible evidence of a defect which might pose a risk to safety, hydraulic flexible hoses must be replaced at regular intervals.

3.5.3 Risks posed by harmful gases, vapours and dusts

Harmful gases, vapours and/or dusts can escape when covers are open. Ensure that adequate ventilation (a means of exhaustion might be required) is provided.

A dust mask must be worn when cleaning the inside of the classifier housing.

Express permission must be obtained prior to carrying out any welding, firing or grinding work. The machine must be cleaned of any dust and flammable substances prior to commencing such work. Fire and explosion risk!

Observe any applicable national regulations when working in confined spaces.

3.5.4 Risks posed by vibration and noise

During operation, any sound insulation devices on the machine must be activated.

Wear personal hearing protection as prescribed.


Safety


3.6 Duties of the operator

Note In the EEA (European Economic Area) it is compulsory to observe the national implementation of the framework directive (89/391/EEC), the associated individual directives and in particular Directive (89/655/EEC) covering the minimum health and safety requirements pertaining to the use of work materials and equipment by employees in the workplace (the latest version thereof in each case). In Germany the Ordinance on Industrial Safety and Health of October 2002 must be observed (implementation of the above-mentioned directive in national law).

The operator must obtain the local type approval and adhere to the conditions associated therewith. The operator must also adhere to the local statutory provisions governing the safety of personnel (accident-prevention regulations) the safety of work equipment and materials (protective equipment and

maintenance) the disposal of products (waste legislation) the disposal of materials (waste legislation) cleaning (cleaning agents and disposal) environmental-protection conditions

CAUTION Risk of burns due to contact with hot surfaces! Before operating the plant, the operator must ensure that the insulation and protective coverings are fitted on hot machine parts.

Connections Before operating the plant, the operator must ensure that the local regulations (e.g. for electrical connection) are observed during installation and start-up operations if these operations are carried out by the operator himself. Lighting The operator must ensure that the machine is adequately and uniformly illuminated in all areas. An illuminance level of 300 lux is recommended in the operating area (maintenance value; ASR 7/3 applicable in Germany).


Safety


3.7 Safety checks

The following safety checks are carried out by the manufacturer before the machine leaves the factory: 1. Airborne noise measurement in accordance with the Machinery Directive,

Annex 1 (item 1.7.4/f) 2. Check and inspection in accordance with DIN EN 60204-1:2007-06

Inspection to verify compliance of the electrical equipment with the technical documentation

Continuous connection of the protective conductor system Insulation resistance tests Voltage tests Protection against residual voltages Function tests Verification test The functions of the electrical equipment, particularly those affecting

safety and protective measures, have been tested.

Note The roller grinding mill contacts the building's steel frame at several positions. This ensures earthing and that a connection exists to the buildings equipotential bonding.


Safety


3.8 Interfaces at the roller grinding mill

2

1

6

4

4

4

4

3

2

5

0005

01

Fig. 2: LOESCHE roller grinding mill interfaces, schematic sketch

Key 1 Finished material outlet 4 Access platform 2 Inspection opening 5 Hydraulik system 3 Process air inlet 6 Grinding material inlet

Further interfaces not shown (observe mill installation diagram): Outgoing-air discharge Compressed-air supply Seal-air supply Electrical supply Control elements


Safety


3.9 Operating and hazardous areas

For the operator the areas on the switching cabinet and control desk (central control room) and on the local control panel are operating areas For the purpose of carrying out refurbishing, cleaning, maintenance and repair work the immediate area around the machine and the interior of the machine are hazardous areas. Only skilled personnel adhering to the safety regulations are permitted to work in the hazardous areas.

DANGER The hazardous area for maintenance and repair work stretches roughly 1 m around the machine or component assembly. The swinging range of the switching-out device of the rollers and the swinging range of the opening switching-cabinet doors must also be taken into consideration. Keep the area around the machine free of objects. Observe the local safety regulations is the installation diagram is altered by

the customer. Electrical current! Beware of the hazards due to electrical current when handling the

machine. Current is applied ahead of the main switch or maintenance switch even in the "0" position.

Perform the shutdown procedures (see Chapter 4.5) before carrying out cleaning, maintenance and repair work.


Safety


3.10 Shutdown procedure

Shutdown procedure It is essential to observe the following shutdown procedure prior to cleaning, maintenance or repair work (by skilled personnel only). 1. Run the machine empty

This takes approx. 60 minutes. 2. Shut off the process gas supply 3. De-energise the machine:

Switch the mains isolator (main switch) on the switching cabinet to "0. Make sure that no voltage is applied. Short-circuit and earth/ground the plant. Secure the main switch against anauthorised turning on with a padlock.

4. Shut off the pneumatic system: Close the stop valve. Check whether the plant is depressurised. Secure the stop valve against reopening.

5. Shut off the hydraulic system: Switch off the hydraulic unit. Check whether the system is depressurised. Secure the hydraulic unit against switching on again.

6. Shut off the seal-air supply: Close the stop valve.

7. Close the opened electrical cabinets when cleaning so as to prevent the ingress of water, steam or dust. Failure to comply with this instruction results in danger to life and limb.

Tab. 3: Shutdown procedure


Safety


3.11 Safety instructions for the roller grinding mill components

3.11.1 Safety instructions pertaining to the LOESCHE mill

The following safety instructions must be observed in particular: In the case of large mills, it is not permitted to remain in the mill pedestal

("mill stand" assembly) during grinding operation. Accident hazard! Make sure that the mill motor cannot be started before entering the grinding

chamber. Persons are not permitted to remain either in the grinding chamber or in the

area of the rollers during the roller swinging-out and swinging-in processes. The hydraulic accumulators of the roller spring assembly are covered in the

country of manufacture by an inspection interval of 2 years. The operator must ensure that the hydraulic accumulators are operated in accordance with the statutory provisions of the country of erection.

Carry out maintenance work on the hydraulic system only after the system is depressurised and if necessary has been completely drained.

Open inspection doors/covers only when the plant has been shut down and is in the rest state.

To prevent accidents resulting from falls, use safety belts during maintenance work which calls for the platform to be disassembled.

During all maintenance and inspection work observe the statutory accident-prevention regulations of the relevant country of erection.

3.11.2 Safety instructions pertaining to the classifier

The following safety instructions must be observed in particular: Observe the statutory accident-prevention regulations of the relevant country

of erection during all maintenance and inspection work. Open the inspection covers of the classifier and the classifier drive only after

stopping all the rotating parts of the classifier and LOESCHE mill. Secure the drives against unauthorised turning on, e.g. with a padlock. Install the safety devices properly before starting up the machine. Make sure that the interior of the classifier is adequately ventilated during

maintenance work.


Safety


3.11.3 Safety instructions pertaining to the hydraulic systems

The following safety instructions must be observed in particular: The hydraulic cabinet may only be used for the purpose intended by the

manufacturer. The limits specified by the manufacturer for the ratio of hydraulic-

accumulator operating pressure to fill pressure must not be over- or undershot.

When filling the accumulator with the necessary gas filling pressure the correction factor for the ambient temperature, specified by the manufacturer, must be considered! (see technical information hydraulic system).

The pressure-limiting valves (6...) set by the manufacturer in the HSLM must not be altered (see Technical Documents for Hydraulic System).

The quality, cleanliness and operational viscosity of the hydraulic medium are crucial to determining the operational safety and reliability, economy and service life of the machine.

Make sure that the LOESCHE hydraulic scheme is available in the hydraulic cabinet.

Make sure that communication between the workers on or in the mill and the hydraulic-cabinet operator is possible and is practised during safety-related work.

Make sure during maintenance work (local operation of the hydraulic cabinets) that there are no persons remaining in the area of the rollers when the latter are being raised or lowered. Accident hazard! Lay spacers underneath when the rollers are raised.

Carry out maintenance work on the hydraulic system only after the system is depressurised and has been completely drained.

Use only nitrogen (N2) to refill the hydraulic accumulators. Oxygen or air may cause an explosion when combined with oil! The nitrogen (N2) purity has to be at last 99,995 %, filtered < 3 m.

Use exclusively the original filling unit to fill the hydraulic accumulators. Observe the information in the hydraulic scheme.

Change filters only after you have made sure that the pump motor cannot be started.

Use only the specified hydraulic oil in accordance with LOESCHE recommendations. The cleanliness class of the hydraulic oil used should meet the requirements of ISO 4406 19/17/14 at the very least.


Safety


3.11.4 Safety instructions pertaining to the swinging device

The following safety instructions must be observed in particular: Do not remain in the swinging range of the rollers while they are being

swung out and in. When a complete roller is removed from the rocker arm, the latter must

remain coupled with the hydraulic swinging-out cylinder. This prevents the rocker arm from also being raised when the roller axle is pulled upwards by frictional locking in the conical clamping sleeves and from springing back as soon as the axle is free. Accident hazard!

Do not use the hydraulic cylinders without the line-break retainers. Ensure that personnel are adequately protected during all operations where

the rollers are swung in and out. To prevent accidents resulting from falls, use safety belts during

maintenance work which calls for the platform to be disassembled. Check the high-pressure hoses for damage prior to each use. Replace these

hoses if necessary. Use only high-pressure hoses of the required pressure stage.

Use only the specified hydraulic oil in accordance with LOESCHE recommendations. The cleanliness class of the hydraulic oil used should meet the requirements of ISO 4406 19/17/14 at the very least.


Safety


3.12 Installed safety systems

DANGER Direct risk to life and limb! It is strictly forbidden to override safety systems or change their method of operation. The operator must ensure that unauthorised persons (not including operating and maintenance personnel) are allowed to access the operating area. Risk of electrocution! Secure the maintenance switch through the use of a padlock after it has

been switched off before you begin with commencing refurbishing, maintenance, overhaul or cleaning work.

Electrical cabinets can only be opened using a special key. The special key may only be issued to one authorised person. Ensure that doors/flaps on electrical cabinets are only opened by specialist

personnel for maintenance purposes and troubleshooting, and otherwise remain closed and locked.

Operating and maintenance personnel will be trained by LOESCHE GmbH personnel at the plant operation location. If you have any questions or are uncertain of anything, please contact LOESCHE GmbH.

Note This operating manual is a component of the equipment and must always be accessible to operating personnel. All safety information contained therein must be observed.


Safety


The safety systems fitted must be checked at regular intervals using suitable inspection methods (see following table).

Inspection intervals Inspection methods

d = daily

w = weekly V = visual check

m = monthly F = function check

y = quarterly M = measurement

y = half yearly

y = annually

The grinding plant is equipped with the following safety systems:

Mains isolator Inspection

Interval Method

y F

(Main switch or maintenance switch) The machine is connected to the power supply or disconnected from it by activating the main switch or the maintenance switch. These switches are located at the electro cabinet. Further separation facilities are: Pneumatics pressure relief, Hydraulics pressure equalisation valve, Sealing air stop valve.

Emergency stop system Inspection

Interval Method

M F

The machine is equipped with several emergency stop systems. The machine is put into a safe operating state immediately when the emergency stop switch is pressed. The location and effect of the emergency stop switch is determined by the owner. Emergency stop switches may be located: on the switching cabinet (superordinated

system) on the mill (activates interlock overall system) on the classifier (activates interlock overall

system) on the sealing air fan (activates interlock overall

system) on the grease pump (emergency stop pump,

maintenance switch)


Safety


Plant control Inspection

Interval Method

y S, F, M

The plant control is carried out internally with a 5-core cabling system, 3-phase, with loadable MP and separate earth cable jacketed with GREEN/YELLOW colouring.

Metal separation Inspection

Interval Method

M F

A metal detector with ferrous metal separation in the raw coal feed prevents metal parts which might cause sparks entering the grinding chamber.

Resting places and railings Inspection

Interval Method

y V, F

In order to guarantee secure walking routes and standing locations for operating and maintenance personnel, appropriate areas on the machine have been secured using platform and guardrail equipment.

Contact protection Inspection

Interval Method

M V, F

Piping carrying heat, in addition to machine parts which heat up, are provided with insulation or protective coverings on site to prevent burns.

Vibration monitoring Inspection

Interval Method

M F

A vibration pickup is mounted above the upper housing mill door to monitor how the mill runs ("vibration monitoring cpl." according to the drawing). As soon as the indicator (in the measuring cabinet) exceeds a preset value, the normal shutdown process is initiated for grinding plant.


Safety

P09961-M10X00.980 en Rev. A 39 The copyright for this document

Van Hanh May Nghien Xi Mang

Documents

Transcript of Van Hanh May Nghien Xi Mang