Installation andOperating Instructions

Rotary Vane Vacuum PumpsR 5 0010, 0012, 0016, 0021, 0160,

0400, 0502, 0630, 1000, 1600

Busch LLC516 Viking Drive

Virginia Beach, VA 23452Phone: (757) 463-7800

Fax: (757) 463-7407

P/N 872.001.01 / 0511

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TABLE OF CONTENTS

Page

GENERAL 2

Identification 2Operating Principles 2

1.0 INSTALLATION 21.1 Unpacking 21.2 Location 21.3 Power Requirements 21.4 Vacuum Connections and Drip Legs 31.5 Oil Filling 4

2.0 OPERATION 42.1 Start-up 42.2 Gas Ballast 52.3 Process Gas 52.4 Stopping Pump 52.5 Water-Cooled Pumps (optional) 52.6 Oxygen Service Pumps 5

3.0 ROUTINE MAINTENANCE 63.1 Pump Oil 63.1.1 Oil Level 63.1.2 Oil Type and Quantity 63.1.3 Oil and Filter Change 63.1.4 Flushing Procedure 73.2 Automotive-Type Oil Filter 83.3 Exhaust Filter 83.4 Vacuum Inlet Filter 83.5 Routine Maintenance Schedule 83.6 Overhaul Kit/Filter 9

4.0 TROUBLESHOOTING 10

5.0 LIMITED STANDARD WARRANTY 14

Illustration of R 5 0010/0016 15Parts Lists for R 5 0010/0016 16Illustration of R 5 0012/0021 17Parts Lists for R 5 0012/0021 18Illustration of R 5 0160 19Parts Lists for R 5 0160 20Illustration of R 5 0400 21Parts Lists for R 5 0400 22Illustration of R 5 0502/0630 23Parts Lists for R 5 0502/0630 24Illustration of R 5 1000/1600 25Parts Lists for R 5 1000/1600 26Technical Data and Typical Wiring Diagram for 1000 and 1600 Pumps 27

We reserve the right to change the product at any time without any form of notification. The information in thispublication is accurate to the best of our ability at the time of printing. Busch LLC will not be responsible for errorsencountered when attempting to perform tasks outlined in this publication which is copyright protected.

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GENERAL

Identification

For model identification, see the nameplate mountedon the side of the exhaust box.

This manual is written to cover RA, RB and RCversions of models 0010, 0012, 0016, 0021, 0160,0400, 0502, 0630, 1000 and 1600 with a "B" ("A" on0010 and 0016, "S" on 0021 and no letter designationon 0012) appearing as the seventh character in themodel type number. For example, it would appear asfollows:

RAXXXX-BXXX-XXXX

When ordering parts, it is helpful to include theidentification code stamped into the side of thecylinder as well as the serial number from thenameplate.

Example: RB0012-1029-XXXX

Operating Principles

All reference (Ref. XXX) numbers listed in the text andon illustrations throughout this manual are related to thedrawings and parts list shown later in this publication.

All R 5 Series, Single Stage, Rotary Vacuum Pumps aredirect-driven, air-cooled, oil-sealed, rotary vane pumpsthat operate as positive displacement pumps. Theyconsist of a rotor positioned eccentrically in a cylindricalstator (see Fig. 1). The rotor has three radially slidingvanes which divide the pump chamber into threesegments. The gas to be pumped enters at the inletport, passes through the inlet screen and the open anti-suckback valve into the pump chamber. As the rotorrotates, the inlet aperture is closed, the gas iscompressed and forced out through the exhaust port.This operation is repeated three times each revolution.

Remove the nuts from the bottom of the box/crate andpull the pump out of the container, then unscrew thestuds from the bottom of the rubber feet.

The inlet port of the pump is covered with a plastic capprior to shipment to prevent dirt and other foreignmaterial from entering the pump. Do not remove thiscover until the pump is actually ready for connection toyour system.

1.2 Location

The pump must be installed in a horizontal position ona level surface so that the pump is evenly supported onits rubber feet. Allow at least one foot (five feet for 0400and larger pumps) of air space between the pump andany walls or other obstructions to the flow of cooling air.

Also, adequate ventilation must be provided for the fanson the pump and motor (i.e., do not locate the pump ina stagnant air location).

Whenever the pump is transported, be sure to drain theoil prior to shipping to avoid vane breakage whenrestarting the pump.

Do not tip the pump over if it is filled with oil.

Locate the pump for easy access to the oil sight glass(Ref. 83) in order to inspect and control the oil levelproperly. Allow clearance at the exhaust flange area toprovide service access to the exhaust filters.

1.3 Power Requirements

The schematic diagram for the electrical connection islocated in the junction box or on the nameplate of thepump motor.

All R 5 series pumps are designed to handle air.Vapor in the air stream can be tolerated when thepump is operated within certain operating parametersas defined by Busch LLC Engineering (see Section2.2 - Gas Ballast). When you desire to use the pumpon an air stream that contains vapors, contact BuschLLC Engineering for operating recommendations;otherwise, the warranty could be void.

1.0 INSTALLATION

1.1 Unpacking

Inspect the box and pump carefully for any signs ofdamage incurred in transit. Since all pumps areordinarily shipped FOB our factory, such damage is thenormal responsibility of the carrier and should bereported to them.

CAUTION: On 0400/0502/0630/1000/1600models, a switch mounted on the exhaustbox side cover plate is a safety device. Thisswitch is used to shut off the pump in theevent the pump oil chamber is overheated.Wire this normally closed switch into thestarter control circuit so that when theswitch reaches the set point, power to thepump motor is discontinued.The motor must be connected according to theelectrical codes governing the installation. The powersupply must be routed through a fused switch to protectthe motor against electrical or mechanical overloads.The motor starter must be set consistent with the motorcurrent listed on the motor nameplate.

Note: Soft starting means are required for the motorsof models 1000 and 1600. Using an across-the-linetype of starter could possibly cause coupling and/orpump failure.

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If the pump is supplied with a manual motor starter, it ispreset at the factory in accordance with the customer’sspecification. For other voltage requirements, contactthe factory for motor and/or starter information.

Note: See the motor manufacturer’s manual for start-up maintenance of the motor.

Correct direction of rotation is marked by an arrow onthe motor fan housing and is counterclockwise whenlooking at the motor from the motor's fan side.

1.4 Vacuum Connections and Drip Legs

Use a line size to the vacuum system that is at least aslarge as that of the pump inlet. Smaller lines will resultin lower pumping speeds than the rated values.

Install a drip leg and drain on the vertical pipe near thepump inlet. Also, when installing discharge piping, adrip leg should be installed. Drain the drip legs often toremove any condensation which may have collected.

If more than one vacuum pump or a receiver tank isconnected to a common main line, each pump shouldhave its own manual or automatic operated shut-offvalve or positive action check valve. The built-in, anti-suck-back valve should not be used as a shut-off valvefor the vacuum system.

Remove the plastic protective cap from the inlet portprior to connection of the pump to the system. Verticalconnection of the vacuum line can be made directly tothe pump inlet (Ref. 260).

CAUTION: After the electrical connectionhas been made, but before the pump isfilled with oil, the rotation of the motormust be checked. Open the inlet port andjog the motor briefly to make sure rotationis correct. If it runs backwards and if it iswired three phase power, reverse any twoleads of the three at the power connection.

CAUTION: When using PVC pipe or any stat-ic enhancing material for the exhaust pip-ing, make provisions to safeguard againstarcing from static electricity. Arcing canignite oil vapor that may be present.

CAUTION: Do not use the anti-suck-backvalve as a system check valve.

Exhaust

InletExhaust filter

Gas ballast(RA)

Rotor

Anti-suckback valve

Inlet screen

Vane

Automotive typespin-on filter Main oil feed line

Exhaust valve (RA)

Oil return valve (RA)

Oil sight glass

Oil return line toinlet (RC)

Fig. 1 - Basic R 5 Pump

Type and size of the inlet connections of the R 5 Seriespumps are shown in the TECHNICAL DATA page 27.

If the gas that is pumped contains dust or other foreignsolid particles, a suitable inlet filter (10 micron rating orless) should be connected to the inlet port. Consult thefactory for recommendations.

1.5 Oil Filling

WARNING: Do not use hydrocarbon oils inpumps on oxygen service. See Section 2.6 -Oxygen Service Pumps.

WARNING: Keep the oil fill plug tight aspressure in the exhaust box could causebodily injury if the plug is blown out. Do notfill/add the pump with oil through theexhaust/inlet ports as there is danger ofbreaking the vanes!

The pump is shipped without oil. After level installation,and after correct rotation has been established, fill thepump with the recommended vacuum oil through the oilfilling port (Ref. 88), observing the "MAX" and MIN"position at the oil sight glass (Ref. 83). On pumps withtwo sight glasses, fill the top glass up to the 3/4 mark.Non-detergent oil should be used. Do not usedetergent motor oil as additives in detergent oil willplug exhaust filter elements and shorten their life.

It is recommended that Busch R500 Series oil be usedto receive the best performance from your vacuumequipment. R500 Series oil is a high quality vacuum oilthat will give longer running time between oil changes,will provide better lubrication at high operatingtemperatures, and will prolong the life of exhaust filterelements. This oil can be obtained directly from BuschLLC in Virginia Beach, Virginia.

The strict use of Busch oils and parts from the day ofpurchase can extend the life of the vacuum pump.

For general applications, use R530 in all modelscovered by this manual, except for the 0021 model,which should use R580. Use R590 or R570 in pumpsthat are operated in high ambient temperatures (above90°F) or high operating pressure when the oilcarbonizes (turns black) before the change interval.Contact the factory for recommendations when usingother oils.

The TECHNICAL DATA chart on page 27 gives theapproximate quantities of oil required for each pump.The oil capacity chart should only be used as a guide,since oil capacity may be slightly lower, depending onwhether the pump was filled previously, and whether allcomponents such as oil filter, oil lines, etc., wereallowed to completely drain. Use only the sight glassreading for proper level. Never overfill!

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For ambient operating temperatures lower than 41°F,use Busch R580 synthetic oil. If this does not help(where the pump has difficulty starting due to high oilviscosity), contact the factory in Virginia Beach,Virginia.

Replace the oil fill plug (Ref. 88), making sure that thegasket (Ref. 89) is in place and properly seated andsecured. Some pumps are equipped with an exhaustpressure gauge as an integral part of the oil fill plug.

2.0 OPERATION

2.1 START UP

Check rotation of the motor as described in Section 1.3.

Fill the pump with oil as described in Section 1.5.

Start the pump and immediately close the inlet. Run thepump for a few minutes before checking the oil levelagain. With the pump shut off, the oil level should bevisible in the oil sight glass (Ref. 83), between the "MIN"and "MAX" mark.

On pumps with two sight glasses, with the pump shutoff, the oil level should be visible in the upper oil sightglass, between the "MIN" and "MAX" mark.

Add oil, if necessary, but only add it when the pump hasbeen shut off and the circulating oil has had sufficienttime to return to the oil sump.

Note: The oil separated by the exhaust filter elementforms droplets on the outside of the exhaust filter thatcollect at a low point in the upper half of the exhaustbox. From there the collected oil is drained back to theoil sump via an oil return valve (Ref. 275), which openson R 5 RA/RB model pumps when the pump is shut off.It is necessary to shut off the pump (all 0010-0160 RAmodel pumps and RB0021 model pumps) after every 8hours of operation to allow the check valve to open. Ifthe pump is not shut off after this time period, it is pos-sible to starve the pump of oil since the oil is not allowedto drain back into the oil sump and/or oil droplets maybe blown out of the exhaust. If the pump is operating athigh pressure, it may be necessary to shut it downsooner than 8 hours. (Not applicable on 0400-1600 RAmodel pumps which have an oil return float valveassembly (Ref. 585) which enables the pumps to be runcontinuously).

On R 5 RC Series pumps, the collected oil is drawncontinuously during operation of the vacuum pump tothe inlet flange (Ref. 260) via the oil return line (Ref.290). The oil return line is connected directly to the areaof the exhaust box, downstream of the exhaust filter,which is at atmospheric pressure. Therefore, a constantamount of air is sucked into the pump, which is anadditional reason that the R 5 RC Series Pumps do not

achieve as low a vacuum as the R 5 RA Series VacuumPumps. RC model pumps can run continuously withouthaving to shut them off for the oil to drain back.

2.2 Gas Ballast

All RA Series pumps are equipped with a gas ballastvalve. The gas ballast valve (Ref. 440) is locatedbetween the inlet port and the exhaust box. RA0010and RA0016 pumps are equipped with a permanentgas ballast which cannot be shut off unless the sinteredfilter is removed and the orifice plugged. PumpsRA0160 thru RA1600 are equipped with an adjustablegas ballast valve.

The adjustable gas ballast valve should normally be leftopen. Its primary function is to prevent water vapor fromcondensing in the pump. Condensation causesemulsification of the oil, loss of lubricity, and possiblerotor seizure.

2.3 Process Gas

The R 5 series pumps are designed to pump air and arenot intended for use when water vapor is beingpumped. In some applications, when the quantity of thewater vapor is moderate, R 5 pumps have been usedwith good results. On these occasions, the pump is rununtil it is up to operating temperature before it is allowedto pump the process gas. The pump is also operated fora period of time off process and on air (to clear it ofprocess gas) before it is shut down. This operatingtechnique prevents the vapor from condensing in thepump. Before attempting to pump a gas laden withwater vapor, contact Busch Engineering for advice.

2.4 Stopping Pump

To stop the pump, turn off the power. The pump has abuilt-in, anti-suck-back valve (Ref. 251 thru 255) toprevent the pump from rotating backwards when it isshut off.

Install an automatic operated valve (such as a checkvalve) in front of the pump, if more than one pump ispumping on the same line or if there is a sufficientvolume of vacuum in the system to cause the pump oilto be drawn into the piping when that pump is shutdown.

All R 5 Series pumps are vented internally toatmospheric pressure through venting holes that arenext to the exhaust valve assembly.

2.5 Water-Cooled Pumps (optional)

Water-cooled pumps are cooled by circulating the oilthrough a shell-and-tube type heat exchanger. Thecirculation of the pump oil through the shell is createdby vacuum in the pump, but the circulation of thecooling water through the tubes is thermostaticallycontrolled. The flow rate of the cooling water iscontrolled by a thermostatically activated valve (seeFig. 2) that senses, through a capillary bulb mountedin the exhaust box, the pump's oil temperature as it isdischarged from the compression chamber. The valvewill open at its set point and close at approximately3°F to 5°F below the set point.

The valve set point is adjustable as follows:

(a) Rotate the valve adjustment screw counterclockwiseto cause the valve to open at a higher temperature. Thismakes the pump run hotter.

(b) Rotate the valve adjustment screw clockwise tomake the valve open at a lower temperature. Thismakes the pump run cooler.

The thermostatic valve can be manually opened byinserting a screwdriver under each side of the springguide and prying the spring and guide upward awayfrom the valve body.

The water cooling option can be used to cool pumpsoperating in high ambient temperatures, or it can beused to maintain a pump at elevated temperatures toprevent condensation inside the pump in wetapplications. Contact Busch Engineering in for details.

2.6 Oxygen Service Pumps

Oxygen service pumps must be used in oxygenenriched applications that are defined as anyapplication which has a process gas that is 25% ormore oxygen. If this pump is contaminated by organiccompounds, do not attempt to use it on oxygen serviceuntil it has been decontaminated.

CAUTION: Do not use the anti-suck-backvalve as a check or shut-off valve for yourvacuum system. Do not depend on the anti-suck-back valve to prevent pump oil frommigrating through the inlet into the systemwhen the pump is shut down.

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These pumps have been manufactured, solventwashed (to remove organic contaminants) and assem-bled according to the latest technical standards andsafety regulations. If this pump is not installed properlyor not used as directed, a dangerous situation or dam-age might occur. It is mandatory that these operatinginstructions be read and understood prior to vacuumpump installation and start-up!

For overhaul/repair of oxygen service pumps,Busch LLC strongly recommends that all major repairoperations be conducted at the factory. Improperhandling of repairs could result in extremedanger to personnel operating the pump.

3.0 ROUTINE MAINTENANCE

R 5 Series pumps require very little maintenance; how-ever, to insure optimum pump performance, the follow-ing steps are recommended.

3.1 Pump Oil

3.1.1 Oil Level

With the pump installed relatively level, make sure thatthere is sufficient clean oil in the pump. The oil levelshould be observed on a daily basis and/or after 8hours of operation and should be replenished if it dropsbelow the 1/4 mark on the oil sight glass on pumps withone sight glass or below the 1/4 mark on the upper oilsight glass on pumps with two sight glasses.

On RA/RB Series pumps, you must first shut the pumpoff in order to let the oil flow back into the oil sump priorto checking the sight glass. Allow sufficient time for theoil to drain back into the sump on RA/RB Series pumpsprior to adding oil, or overfilling could result.

Oil level readings should be done only when the pumpis turned off. Oil can be added to the oil fill port (Ref.88) if the pump is shut off and the circulating oil has suf-ficient time to return to the oil sump. The oil mightappear to be foamy, which is a normal phenomenonwith aerated oil.

Under normal circumstances, it should not be neces-sary to add or drain oil from the pump between recom-mended oil changes.

A significant drop in oil level means there is an oil leakor that an exhaust filter is broken. The pump should besmoking excessively. It is normal for the oil to be foamyand light in color in an operating pump. However, if theoil is milky colored, it is an indication that water is pres-ent in the oil. Normally, by operating the pump for anextended period, with the inlet suction blanked off andthe gas ballast open on RA pumps, the water will bepurged from the oil. If the oil is dark colored, it is con-taminated or carbonized and must be changed.Depending on the severity of the contamination, a thor-ough flushing may be needed. Contact the factory forflushing oil (Busch R568) and refer to Section 3.1.4.

3.1.2 Oil Type and Quantity

See Section 1.5 for details on oil type and quantity.

3.1.3 Oil and Filter Change

Oil life is dependent upon the conditions to which it isexposed. A clean, dry air stream and an oil operatingtemperature under 210°F are ideal conditions. Whenusing R530 (hydrocarbon oil), it is recommended thatoil changes are made every three (3) to four (4) monthsor 500 to 750 hours of operation, or as necessary if highheat is contaminating the oil. The use of Busch R570or R590 synthetic oils could extend the operating hoursbetween oil changes under ideal conditions. Oil sam-ples should be taken regularly when exceeding the 500-750 hour recommendation.

Excessive Heat

When the pump is subjected to operating conditionsthat will cause the oil to be heated above 235°F, the oilwill carbonize and become contaminated after a rela-tively low number of operating hours. The higher the

WARNING: This pump is filled with a specialoperating fluid. Do not use any other typeof fluid, oil and/or grease. Use one of thefollowing:

• Fomblin LC 250• Tyreno Fluid 12/25V (perfluorinated polyether)• KRYTOX ® Vacuum pump fluid by Du Pont Company

If you have any questions, please phone ourCustomer Service Department for more information.

CAUTION: Do not add oil while the pump isrunning since hot oil vapor may escapethrough the oil fill port.

CAUTION: When changing the oil and fil-ters, it may be necessary to flush the pumpto remove any build-up of degraded oil fromthe sumps, oil lines, radiators, etc., toensure proper oil flow through the pump.Reduced oil flow, especially through radia-tors and cooling coils, can cause mechani-cal damage or extreme overheating, whichcould cause the oil vapors to ignite.

CAUTION: Insufficient oil quantity in thepump has the potential, under certain con-ditions, to lead to self-ignition of theremaining oil in the pump.

temperature, the quicker the oil becomes contaminated.If the oil temperature is too severe, Busch R570 orR590 synthetic oil should be used to withstand theelevated temperatures. If synthetic oil is used, the pumpshould be flushed with Busch R568 oil. Auxiliary oilcooling is the most practical approach to a severeheating problem.

Contaminated Air Stream

When the air stream contains a solid and/or liquid thatcan contaminate the oil, it must be changed more often.If the air stream contains a small percentage ofcontaminates and/or they are slightly aggressive* (mildacids, etc.), synthetic oil, such as Busch R570, willresist breakdown better than the standard Busch R530.The solution is to install a filter or knock-out pot to keepthe contaminates out of the pump.

*Process air streams with a large percentage of contaminates and/ormore than slightly aggressive contaminates must use a once-throughsealant or dry-type pump.

Oil change intervals can only be established byexperience with the pump operating in the actualconditions (see previous paragraph for some of theconditions). Develop the oil change interval byperiodically checking an oil sample removed from thepump. When the oil sample has become dark in color(from solids and carbonized particles) or is milkylooking (from water), it is time to discard it. Asmentioned before, a thorough flushing may be required.

3.1.4 Oil Flushing Procedure

Flushing is needed under certain conditions. Somepumps will be beyond flushing and will need to beoverhauled.

To help determine if flushing is needed, observe thecondition of the oil as it is drained from the pump. Is itblack and tar like or contaminated in any way? Was thepump noisy, overheating, or was the motor overloadshutting the pump off? How old is the pump and whenwas the last time the oil was changed?

If the above conditions exist or you don't know when thelast oil change was performed further investigation isneeded. Also, when changing from one oil type such asR530 to another type such as R590 or R570 it will bebeneficial to flush. Although the oils are compatible,mixing a lesser grade oil such as R530 with a syntheticoil like R570 will reduce the effectiveness of thesynthetic oil.

All of the oil will be removed and replaced with theflushing oil (Busch R-568), and eventually that will bereplaced by whatever Busch oil is needed for yourparticular application. Have enough oil and oil filters on

hand for a couple of flushes. The following describesthe steps in the flushing procedure:

Shut the pump off and drain all the oil from the pumpand remove the access plates (Ref. 205) from theexhaust box (Ref. 075). Remove the metal baffle (Ref.078) and take a good look at the internal walls of the oilsump. If the walls are discolored but have no build up ofany kind one can proceed with the flushing. If gelled orburnt oil is clinging to the walls this material must bescraped and removed prior to flushing. Proceed byscraping and cleaning as much of the exhaust box aspossible. The more debris that is removed now themore effective the flushing will be later. Re-install themetal baffle, cover and proceed with the flushing. At thispoint one must remember that the oil lines and oilcooler might also be plugged to a point where noamount of flushing will make a difference and acomplete overhaul will be the only option. Dependingon the severity of the oil contamination flushing may bea last ditch effort.

Drain all of the oil from the pump. The morecontaminated oil you remove now the more effectivethe oil flushing will be.

Remove the oil filter (Ref. 100) and install a new one. Itis recommended that you do not change the exhaustfilter or filters until after the flushing to preventcontamination of any new filters.

Fill the exhaust box with the proper amount of flushingoil (Busch R-568).

If possible run the pump with the inlet closed and off ofthe process. Run the pump for approximately six hours,shut the pump off and drain a small sample of oil into aclear container.

Examine it. If it is clear to amber run the pump foranother six hours and examine it again. If after the firstsix hours it is black drain it and fill again using anothernew oil filter.

If after the second flushing the oil still remains black thepump may have too much contaminated oil in it to flushout properly. There may be residue remaining in thelines and cooler that will not flush out. An overhaul willbe necessary.

If after the second six hour period the oil still remainsclear to amber in color drain it, change the oil filter andfill with the regular oil. At this point also change theexhaust filters.

Run the pump with a fresh charge of the oil to be usedin your application (not R-568), and monitor theoperating conditions closely. Check for noise,overheating and oil condition until a regular oil changeschedule can be established.

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Do not let the oil turn black. Change it before it fails. Ifthe oil is kept in good condition the pump will last foryears. If the oil starts to turn black do not hesitate toflush again. Keeping on top of the oil changes will pre-vent costly overhauls.

If you are just switching from one type of oil to anothera single six hour flush is all that is necessary (follow theabove instructions). Remember to change to a newexhaust filter or filters after the flushing and not before.

3.2 Automotive-Type Oil Filter

The 0160 - 0630 Series pumps are equipped with anautomotive-type oil filter (Ref. 100). The 1000/1600Series has two automotive-type filters. The 0010 thru0021 are not equipped with an automotive-type oil filter.When replacing the automotive-type oil filter, use only agenuine Busch filter.

Note: Make sure to tighten the Busch oil filter secure-ly against the aluminum sealing surface so that leakswill not occur.

3.3 Exhaust Filter

Every nine (9) to twelve (12) months, or as necessary,replace the exhaust filter elements. The service life ofthe exhaust filters varies widely with pump application.It is only necessary to change the filters when the ele-ments become clogged with foreign material or burnedoil. Indications of clogged filters are smoke and oil mistcoming from the pump exhaust, higher than normalmotor current or oil leaking from the gas ballast valveon RA models.

A pressure gauge (Ref. 90) is supplied with your R 5vacuum pump as part of the oil fill plug. This gauge hasa green field and a red field. Pressure within the greenfield would indicate normal pressure. Pressure in thered field (for a continuos period of time) requires animmediate change of the exhaust filter(s).

In order to replace the filter, remove the screws retain-ing the exhaust port cover plate. Pull the housing offthe exhaust box; set it aside. Use a slotted head screwdriver to loosen the exhaust filter retaining spring (Ref.125), then rotate and remove the spring (see Fig. 3).Pull the filter cartridge (Ref. 120) out of the exhaust box.

To field test an exhaust filter element, remove it fromthe pump, allow it to cool, clean the sealing end (or O-ring end), and use compressed air to blow through theelement. Apply approximately 3 to 6 psi (maximumallowable operating pressure across the filter).

Use a clean shop rag to seal off the connectionbetween the air hose and the filter. If you can blowthrough it, the element is not plugged. If plugged, dis-card it and install a new one. The filter cannot becleaned successfully. Visually inspect the filter elementfor cracks.

Reinstall the filter elements. Make sure the open end ofthe element is properly seated down in its recess in theexhaust box with the O-ring (Ref. 121) correctly posi-tioned. Retain the filter with the spring clip, tighten thetension screw until the filter is secure. Place theexhaust port gasket and cover in position on theexhaust box and retain with the cap screws.

3.4 Vacuum Inlet Filter

If the pump is equipped with a special vacuum inlet fil-ter in applications where powder, dust or grit is present,the filter cartridge should be cleaned on a weekly basis,or as required, depending on the amount of foreign par-ticles to which the pump is exposed.

3.5 Routine Maintenance Schedule

See the motor manufacturer’s manual for the periodicmotor maintenance.

Daily: Visually check oil level (see 3.1.1 and 3.1.2).

WARNING: Do not inhale through the filteror allow your mouth to come in direct con-tact with the filter.

Fig. 3 - Removing the Filter Spring

WARNING: If the gas entering this pump isa health hazard, use rubber gloves and allnecessary personal protection equipmentwhen performing the exhaust filter replace-ment operation.

WARNING: Wear safety glasses wheninstalling or removing the spring retainers.The retainers can, if not secured correctly,slip off and fly out of the exhaust box.

Weekly: Check oil for contamination (see 3.1.3).Inspect inlet filter (see 3.4).

Every three (3) or four (4) months, 500 to 750hours of operation, or as necessary: See 3.1.3and 1.5. Drain and discard oil from the hot pump.Replace the automotive-type oil filter (not applicable onthe 0010, 0012, 0016 and 0021) and refill with fresh oilthrough the fill plug (see 3.1.2 through 3.1.3 and 3.2).

Every nine (9) to twelve (12) months, or asnecessary: Replace exhaust filter elements (see 3.3).

As necessary: Check and/or clean the standard inletscreen. If the optional inlet filter is used, replace thefilter material as practice determines.

The oil cooling coils (Ref. 240 on models 0012 through0400), the oil cooler (Ref. 241 on models 0502 through1600) and any motor or pump grill covers on all modelsshould be inspected regularly for debris. Clean asnecessary. Soiling prevents cool air intake or movementand may lead to overheating of the pump.

Drain drip legs on inlet and exhaust piping.

3.6 Overhaul Kit/Filter

An overhaul kit containing a set of gaskets and O-rings,vanes, bearings and bearing sleeves, shaft seals andtaper pins, is available from the factory.

Also, a filter kit containing oil drain plug, gaskets, auto-motive-type oil filter (except 0010, 0012, 0016 and0021), exhaust filter, and synthetic baffle strainer(where applicable), is available from the factory.

When ordering, please specify pump size and model (a4-digit suffix after size), and serial number.

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4.0 TROUBLESHOOTING

Pump does not reach “blank-off”pressure, or

the pump takes too long to evacuatethe system

Pump will not start

Oil is contaminated

Leakage in suction line

Wire mesh inlet screen plugged (Ref.261)

No oil or not enough oil in oil reservoir

Automotive-type oil filter is dirty orclogged (where applicable)

Inlet valve plate (Ref. 251) stuck inclosed or partially open position dueto contamination

Oil tubing plugged and/or leaking

Shaft seal leaking

Exhaust valve (Ref. 159) is notproperly seated or it is partially stuckopen (RA models only)

Vanes are blocked in the rotor or theyare damaged

Radial clearance between the rotorand cylinder is no longer adequate.

Internal parts worn or damaged

The motor does not have the correctsupply voltage

The motor starter overload settingsare too low or trip level is too low

Shut off pump, drain oil and replaceautomotive-type oil filter (whereapplicable) when pump is cool. Flushand fill pump with new oil and takenew blank off measurement afteroperating temperature is reached.

Check the piping for leaks

Clean wire mesh inlet screen. Installinlet filter if problem repeatsfrequently

Shut off pump and add necessary oil

Replace automotive-type oil filter,exchange oil, if necessary, and refillwith fresh oil

Disassemble inlet valve and screen.Clean as required

Replace, clean and/or retighten theoil fittings. Replace only with samesize tubing

Replace the shaft seal

Properly seat or loosen exhaust valve

Free vanes or replace with new ones

Re-set the radial clearance

Replace worn or damaged parts

Provide the correct supply voltage

Check overload settings in motorstarter for size and setting accordingto motor nameplate data

Problem Possible Cause Remedy

A fuse is blown

Connection wiring is too small or runsare too long causing too great avoltage drop

Pump or motor is blocked

Oil too heavy (viscosity too high) orambient temperature below 5 degreesC (41°F)

Pump runs in the wrong direction

Pump is overfilled with oil or wrongkind of oil is used

Exhaust filters in exhaust chamberare clogged and appear burned blackwith pump oil

The exhaust filter is clogged due toprocess material

Loose connection in motor terminalbox; not all motor coils are properlyconnected. Motor operates on twophases only

Foreign particle in pump; vanesbroken; bearing seizing

Exhaust filter is not properly seatedwith O-ring (Ref. 121) or filter materialis cracked

Exhaust filter is clogged with foreignparticles

Check the fuses, replace if necessary

Use proper wiring size

Remove fan cover and try to turnpump and motor by hand. If frozen,remove motor from pump and checkmotor and pump separately. If pumpis frozen, disassemble completelyand remove foreign objects in thepump or replace broken vanes.

Change to R580 vacuum oil if verycold, or warm up oil before startingthe pump

Check for correct rotation which iscounterclockwise when looking at themotor from the motor's fan side

Correct the oil level and quality perSection 1.5 and use recommended oil

Replace exhaust filters, maintainproper oil condition, oil level, and useonly Busch recommended vacuum oil

Contact the factory in Virginia Beach,Virginia for recommendations

Check motor wiring diagram forproper hookup, especially on motorswith six internal motor windings,tighten and/or replace looseconnections

Remove foreign parts, and replacevanes and bearings

Check condition and check for properseating of exhaust filters. Replace ifnecessary. Also, check filter springclips for tightness

Replace exhaust filter

Pump starts, but labors and draws avery high current

Pump discharges smoke at theexhaust port or expels oil dropletsfrom the exhaust

Note: An oil filling plug with pressuregauge is provided on all R 5 Seriespumps, so that the pressure in front ofthe exhaust filters can be monitored.The green field indicates that thefilters are still effective. Back pressurethat causes a continuous reading inthe red field requires immediatechange of exhaust filters (Ref. 120).

11

Problem Possible Cause Remedy

Problem Possible Cause Remedy

Free or replace the oil return checkvalve

Shut pump down during breakperiods or install an additional oilreturn line assembly. Check that oilreturn valve (Ref. 275) is free anddrains oil back into the pump whenthe RA/RB Series pump is stopped

Free clogged line or replace. Checkthat oil is being drawn out of theexhaust filter area while the vacuumpump is operating

Replace coupling insert in motor/pump coupling

Replace bearings

Replace vanes, Use recommendedBusch oil. Change oil morefrequently

Clean motor and pump air grills. Donot install the pump in an enclosedcabinet unless a sufficient amount ofcool air is supplied to the pump. Onpumps with oil cooling coils, cleanoutside fin assembly. Bring ambientair temperature down

Change automotive oil filter

Drain and refill only with Buschrecommended oil. Increase oilchange intervals

Pump runs very noisily

The pump runs very hot. SeeTechnical Data for typical oil sumptemperature.

Note: The oil temperature with aclosed inlet should be approximately185-225°F depending on pump type.At 24 in. Hg, the oil in the pump cango above 225°F. These values aretaken at an ambient temperature of68°F. The maximum recommendedambient operating temperature for anR 5 is 100°F on a continuous basis.When it is necessary to operate apump in ambient temperatures abovethis limit, careful oil monitoring and/oroptional water cooling is necessary.Contact the factory for details.

The oil return valve (Ref. 275) is stuckopen on RA/RB pumps. Properfunction is that when blowing intocheck valve, it should close. Whenapplying vacuum on it, check valveshould open. (Not applicable on0400-1600 RA series pumps, whichhave oil return float valve)

If RA/RB Series vacuum pumps runcontinuously over 8 hours withoutever being shut down, it may bepossible that oil accumulates behindthe exhaust box cover to the extentthat oil is blown out of the exhaustwith the exhaust gas. (Not applicableon 0400-1600 RA series pumps,which have oil return float valve)

Oil return line (Ref. 290) on RCStandard pump is clogged

Coupling insert worn

Bearing noise

Vanes stuck

Not enough air ventilation to the pump

Automotive-type oil filter (ifapplicable) clogged and pump doesnot receive enough oil

Not enough oil in oil reservoir, orbadly burned oil is used for pumplubrication

WARNING: Do not applypressure or vacuum by mouth

12

13

Pump is seized

Automotive-type oil filter (Ref. 100)does not get warm within two to fiveminutes when cold pump is started(not applicable on 0010, 0012, 0016or 0021)

Pump operated without oil and vanesare broken

Pump was operated for an extendedperiod of time in the wrong rotation

Liquid carryover into the pumpcylinder broke vanes while pump wasrunning, or oil broke vanes on start-up

Automotive-type oil filter is clogged

Wrong automotive-type filter is usedand/or oil lines and oil coolers leadingto pump are clogged

Electric motor has failed and seized

Disassemble and exchange vanes;contact Busch LLC ServiceDepartment in Virginia Beach,Virginia for suggestions

Inspect vanes and replace; contactBusch LLC Service Department inVirginia Beach, Virginia forsuggestions

(a) Install condensate trap on the inletof the pump

(b) Pump was overfilled with oil in oilreservoir. Follow oil filling procedure(see Section 1.5) and do not overfill

(c) Built-in, anti-suck-back valve (Ref.250 through 255) leaking while pumpwas shut down and vacuum was leftin manifold. Clean valve seat andcheck that anti-suck-back valve holdsvacuum on inlet when pump is shutdown

d) Two pumps or a receiver is on thesame main line. Install a manual orautomatic operated valve in front ofeach pump

Replace automotive-type filter perSection 3.2 and exchange oil perSection 1.5

Use only automotive filter as listed inSection 3.2 and blow lines free. Flushoil cooler

Check and replace motor bearings orreplace motor if windings haveburned up

Problem Possible Cause Remedy

5.0 LIMITED STANDARD WARRANTY

Busch LLC warrants that all products furnished by it arefree from defects in material and workmanship at thetime of shipment for a period of 18 months from thedate of shipment, or 12 months from the date ofinstallation, whichever occurs first. Claims must bemade during that period and are limited to thereplacement or repair of parts claimed to be defective.

In the case of components purchased by Busch LLC,such as starters, controls, mechanical seals, motors,couplings, etc., the warranty of that manufacturer willbe extended to the purchaser in lieu of any warrantyby Busch LLC. The replacement of wear itemsincluding, but not limited to, seals, bearings, couplings,exhaust cover gaskets, oil drain plugs, oil fill plugsetc., made in connection with normal service are notcovered by this Warranty.

The Limited Standard Warranty is valid only when theproduct has been properly installed, used in a normalmanner, and serviced according to the operatingmanual. This warranty shall not extend to products thathave been misused, neglected, altered, or repairedwithout factory authorization during the warranty period.We highly recommend the use of Busch oils and partsto achieve documented performance and efficientoperation. The use of oils or parts other than Buschcould limit the life expectancy of the equipment andcould void any warranties if they are the cause of anydamage. Operating conditions beyond our control suchas improper voltage or water pressure, excessiveambient temperatures, or other conditions that wouldaffect the performance or life of the product will alsocause the warranty to become void.

Permission to return parts for warranty repair must beobtained, and all returns must be prepaid to the factory.If, after examination, the product or part is found to bedefective, it will be repaired or replaced on a no-chargebasis and returned, FOB the factory. If it is determinedthat the Warranty has not been breached by Busch LLCthen the usual charges for repair or replacement will bemade, FOB the factory. Parts or products that areobsolete or those made to special order are notreturnable.

This Limited Standard Warranty applies only to theabove and is for the period set forth. Busch LLC'smaximum liability shall not, in any case, exceed thecontract price for the product, part, or componentclaimed to be defective; and Busch LLC assumes noliability for any special, indirect, or consequentialdamages arising from defective equipment.

THERE ARE NO WARRANTIES IMPLIED OREXPRESSED THAT EXTEND BEYOND THOSECONTAINED IN THIS LIMITED STANDARDWARRANTY.

14

15

16

Parts List for R 5 0010/0016

Ref Description

001 Cylinder015 Rotor018 Bearing sleeve022 Vane025 Motor side endplate026 Opp. M.S. endplate030 Needle bearing035 Shaft seal046 Socket set screw047 Lockwasher050 O-ring053 Hex head cap screw054 Lockwasher056 Hex head cap nut060 Tapered pin065 Shaft key075 Exhaust box083 Oil sight glass084 Ring gasket088 Oil fill plug089 Ring gasket090 Pressure gauge095 Oil drain plug096 O-ring120 Exhaust filter121 O-ring125 Filter spring assembly126 Slot chase head mach. screw130 Baffle strainer145 Cover plate exhaust screen146 Hex head cap screw159 Exhaust valve166 Cylindrical pin180 Plug185 Cylinder/exhaust box gasket186 Hex head cap screw187 Lockwasher200 Drum exhaust box plug201 O-ring220 Hydraulic elbow fitting230 Oil tubing231 Oil tubing251 Valve plate252 Valve guide253 O-ring254 Inlet check valve spring256 Cylinder/inlet flange gasket260 Inlet flange261 Inlet screen262 Retaining spring265 Hex head cap screw266 Lockwasher270 Plug271 Ring gasket275 Oil return valve276 Ring gasket

Ref Description

285 Oil recirc. screw286 Banjo hydraulic fitting288 Ring gasket290 Oil return line291 Hydraulic straight fitting300 Motor mounting bracket301 Socket head cap screw302 Lockwasher310 Coupling400 Motor401 Hex head cap screw402 Lockwasher417 Slotted set screw418 Slotted set screw419 Washer421 Rubber foot430 Nameplate431 Directional arrow433 Oil level label436 Maintenance label440 Check valve for gas ballast550 Cover guard

17

18

Parts List for R 5 0012/0021

Ref Description

001 Cylinder014 Seal015 Rotor018 Bearing sleeve022 Vane025 Motor side endplate026 Opp. M.S. endplate030 Teflon sleeve bearing035 Shaft seal050 O-ring052 Lockwasher053 Hex head cap screw054 Lock washer060 Tapered pin065 Shaft key075 Exhaust box079 Demister pad080 Oil sight glass081 Ring gasket083 Oil sight glass084 Ring gasket088 Oil fill plug w/hole089 Ring gasket090 Pressure gauge095 Oil drain plug096 O-ring120 Exhaust filter121 O-ring125 Filter spring assembly126 Slot chs. head mach.screw146 Hex head cap screw153 Exhaust cover plate154 Exhaust cover gasket159 Exhaust valve assembly180 Plug185 Gasket189 Stud190 Lockwasher191 Hex head nut200 Drum exhaust box plug201 O-ring220 Hydraulic elbow fitting222 Hydraulic straight fitting223 Hydraulic straight fitting224 Hydraulic elbow fitting231 Oil tubing240 Cooling coil251 Valve plate252 Valve guide253 O-ring254 Inlet check valve spring255 O-ring260 Inlet flange261 Inlet screen262 Retaining spring263 Baffle strainer

Ref Description

265 Screw266 Lockwasher270 Plug275 Oil return valve276 Ring gasket285 Oil recirc. screw286 Banjo hydraulic fitting289 Fitting nut290 Oil return line tubing291 Hydraulic fitting297 Screen300 Motor mounting bracket301 Socket head cap screw302 Lockwasher311 Motor side coupling half312 Coupling insert313 Pump side coupling half321 Pump fan323 Tolerance ring331 Set screw333 Set screw339 Fan centering ring340 Pump end cover341 Machine screw400 Motor401 Hex head cap screw402 Lockwasher416 Stud417 Slotted set screw419 Foot spacer421 Rubber foot422 Rubber foot429 Screw430 Nameplate431 Directional arrow

19

20

Parts List for R 5 0160

Ref Description

001 Cylinder004 Stud009 Stud015 Rotor018 Bearing sleeve022 Vane025 Motor side endplate026 Opp. M.S. endplate030 Needle bearing031 Endplate spacer032 Pump spacer034 Slotted chs hd cap screw035 Shaft seal040 Protective screen042 Shaft seal retaining plate043 Hex head cap screw046 Hex head plug047 Copper ring gasket050 O-ring053 Hex head cap screw054 Lockwasher056 Hex head cap nut060 Tapered pin065 Shaft key066 Shaft key075 Exhaust box078 Sheet metal baffle079 Demister pad083 Oil sight glass084 Ring gasket088 Oil fill plug089 Oil fill plug gasket090 Pressure gauge095 Oil drain plug096 O-ring099 Nipple100 Auto-type oil filter115 Filter bracket120 Exhaust filter121 O-ring125 Filter spring assembly126 Socket head cap screw130 Baffle strainer136 Support for syn. frame140 Exhaust cover plate141 Cover plate gasket142 Hex head cap screw143 Lockwasher146 Hex head cap screw152 Lockwasher153 Exhaust silencer154 Gasket159 Exhaust valve168 O-ring169 Exh. valve cover plate175 Stud

Ref Description

322 Motor side fan340 Fan Cover341 Sheet metal screw342 Plastic insert390 Eyebolt adapter391 Eyebolt392 Lockwasher393 Hex head cap screw400 Motor401 Hex head cap screw402 Lockwasher416 Stud417 Slotted set screw419 Foot spacer420 Flat washer421 Rubber foot423 Washer424 Hex head cap nut430 Nameplate431 Arrow label436 Maintenance label470 Hydraulic fitting471 Teflon tubing472 Check valve473 Bell reducer474 Gas ballast filter475 Gas ballast valve bracket476 Elbow fitting477 Pet cock valve478 Hex head cap screw479 Lockwasher480 Oil tube insert9000 Steel socket plug9001 Hydraulic adapter

Ref Description

176 Lockwasher177 Hex head nut180 Plug185 Gasket186 Hex head cap screw187 Lockwasher189 Stud190 Lockwasher191 Hex head nut200 Drum exhaust box plug201 O-ring205 Cover side plate206 Gasket207 Hex head cap screw208 Lockwasher220 Hydraulic fitting222 Hydraulic fitting223 Hydraulic fitting224 Hydraulic fitting230 Oil tubing231 Oil tubing232 Oil tubing240 Cooling coil250 Inlet flange251 Valve guide252 Valve plate253 O-ring254 Inlet check valve spring255 O-ring260 Inlet flange261 Inlet screen265 Hex head cap screw266 Lockwasher270 Plug R1/8"271 Ring gasket275 Oil return valve276 Ring gasket285 Oil recirc. screw286 Banjo hydraulic fitting290 Oil return line tubing291 Hydraulic fitting292 Carburetor jet300 Motor mounting bracket302 Lockwasher303 Hex shoulder nut304 Socket hd machine screw305 Flat washer306 C-face adapter flange307 Socket head screw311 Motor side coupling half312 Coupling insert313 Pump side coupling half315 Protective screen318 Protective screen319 Spacer321 Pump shaft fan

21

22

Parts List for R 5 0400

Ref Description

001 Cylinder004 Stud005 Set screw009 Stud015 Rotor018 Bearing sleeve019 Shaft seal sleeve022 Vane025 Motor side endplate026 Opp. M.S. endplate030 Needle bearing035 Shaft seal040 Protective screen041 Hex head nut042 Shaft seal support ring043 Hex head cap screw046 Hex head plug047 Copper ring gasket050 O-ring053 Hex head cap screw054 Lockwasher056 Hex head cap nut060 Tapered pin065 Shaft key066 Shaft key075 Exhaust box078 Sheet metal baffle079 Demister pad080 Perforated sheet metal083 Oil sight glass084 Ring gasket088 Oil fill plug089 Oil fill plug gasket090 Pressure gauge095 Oil drain plug096 O-ring099 Nipple100 Auto-type oil filter105 Cover plate106 Cover plate gasket107 Socket head cap screw108 Lockwasher115 Filter bracket116 Filter bracket120 Exhaust filter121 O-ring125 Filter spring assembly126 Socket head cap screw130 Baffle strainer136 Perf. sheet metal screen137 Hex head cap screw138 Flat washer139 Lockwasher140 Exhaust cover plate141 Cover plate gasket142 Hex head cap screw

Ref Description

312 Coupling insert313 Pump side coupling half319 Spacer320 Fan and coupling spacer321 Pump shaft fan322 Motor side fan327 Locking disk328 Socket head cap screw329 Lockwasher340 Fan Cover341 Sheet metal screw342 Plastic insert391 Eyebolt400 Motor401 Hex head cap screw402 Lockwasher417 Slotted set screw418 Rubber foot419 Foot spacer420 Stud421 Rubber foot422 Rubber foot423 Lockwasher424 Hex head cap nut430 Nameplate431 Arrow label436 Maintenance label470 Hydraulic banjo fitting471 Teflon tubing472 Check valve473 Bell reducer474 Gas ballast filter475 Gas ballast valve bracket476 Elbow fitting477 Pet cock valve478 Hex head cap screw479 Lockwasher480 Oil tube insert9000 Steel socket plug9001 Flat washer9002 Entrance elbow connector9003 Fenwal temperature switch9004 Grounding washer9005 Plain washer9006 Socket head cap screw9007 Hex head cap screw

Ref Description

143 Lockwasher146 Hex head cap screw153 Cover plate exhaust screen159 Exhaust valve168 O-ring169 Exh. valve cover plate175 Hex head cap screw176 Lockwasher184 Socket head cap screw185 Cylinder/Exhaust box gasket186 Hex head cap screw187 Lockwasher200 Drum exhaust box plug201 O-ring205 Cover side plate206 Gasket207 Hex head cap screw215 Reducing nipple216 Ring gasket220 Hydraulic fitting222 Hydraulic elbow fitting223 Hydraulic elbow fitting224 Hydraulic banjo fitting225 Hydraulic straight fitting226 Hydraulic banjo fitting230 Oil tubing231 Oil tubing232 Oil tubing233 Oil tubing240 Cooling coil250 Inlet flange251 Valve plate252 Valve inlet guide253 O-ring254 Inlet check valve spring255 O-ring258 Ball, Viton260 Inlet flange261 Inlet screen265 Hex head cap screw266 Lockwasher275 Oil return valve276 Ring gasket285 Oil recirc. screw286 Banjo hydraulic fitting290 Oil return line tubing291 Hydraulic elbow fitting297 Screen298 Slot chs. head screw299 Rivet300 Motor mounting bracket302 Lockwasher303 Hex shoulder nut306 C-face adapter flange307 Socket head screw311 Motor side coupling half

23

24

Parts List for R 5 0502/0630

Ref Description

001 Cylinder004 Stud005 Set screw008 Stud009 Stud015 Rotor018 Bearing sleeve019 Shaft seal sleeve022 Vane025 Motor side endplate026 Opp. M.S. endplate030 Needle bearing035 Shaft seal039 Socket head mach. screw040 Protective screen041 Hex head nut042 Shaft seal support ring043 Hex head cap screw046 Hex head plug047 Copper ring gasket050 O-ring053 Hex head cap screw054 Lockwasher056 Hex head cap nut060 Tapered pin065 Shaft key066 Shaft key075 Exhaust box078 Sheet metal baffle079 Demister pad080 Perforated sheet metal083 Oil sight glass084 Ring gasket088 Oil fill plug089 Oil fill plug gasket090 Pressure gauge095 Oil drain plug096 O-ring099 Nipple100 Auto-type oil filter105 Cover plate106 Cover plate gasket107 Socket head cap screw108 Lockwasher115 Filter bracket116 Filter bracket120 Exhaust filter121 O-ring125 Filter spring assembly126 Socket head cap screw130 Baffle strainer136 Perf. sheet metal screen137 Hex head cap screw138 Flat washer139 Lockwasher140 Exhaust cover plate

Ref Description

313 Pump side coupling half319 Spacer320 Fan and coupling spacer321 Pump shaft fan327 Locking disk328 Socket head cap screw329 Lockwasher350 Centering ring351 Centering ring352 Fan guard353 Hex head cap screw354 Hex head nut355 Distance bolt356 Mounting bolt357 Hex nut358 Lockwasher360 Lockwasher391 Eyebolt400 Motor401 Hex head cap screw417 Slotted set screw418 Rubber foot419 Foot spacer420 Stud421 Rubber foot422 Rubber foot423 Lockwasher424 Hex head cap nut430 Nameplate431 Arrow label436 Maintenance label470 Hydraulic banjo fitting471 Teflon tubing472 Check valve473 Bell reducer474 Gas ballast filter475 Gas ballast valve bracket476 Elbow fitting477 Pet cock valve478 Hex head cap screw479 Lockwasher480 Oil tube insert585 Oil return float valve kit586 Hydraulic fitting591 Hydraulic fitting9000 Steel socket plug9001 Flat washer9002 Entrance elbow connector9003 Fenwal temperature switch9004 Grounding washer9005 Plain washer9006 Socket head cap screw9007 Hex head cap screw

Ref Description

141 Cover plate gasket142 Hex head cap screw143 Lockwasher146 Hex head cap screw153 Cover plate exhaust screen159 Exhaust valve168 O-ring169 Exh. valve cover plate175 Hex head cap screw176 Lockwasher184 Socket head cap screw185 Cylinder/Exhaust box gasket186 Hex head cap screw187 Lockwasher200 Drum exhaust box plug201 O-ring205 Cover side plate206 Gasket207 Hex head cap screw222 Hydraulic elbow fitting223 Hydraulic elbow fitting224 Hydraulic banjo fitting225 Hydraulic straight fitting226 Hydraulic banjo fitting230 Oil tubing231 Oil tubing232 Oil tubing233 Oil tubing236 Hydraulic fitting238 Hex head nut239 Lockwasher241 Oil cooler250 Inlet flange251 Valve plate252 Valve inlet guide253 O-ring254 Inlet check valve spring255 O-ring258 Ball, Viton260 Inlet flange261 Inlet screen265 Hex head cap screw266 Lockwasher285 Oil recirc. screw286 Banjo hydraulic fitting290 Oil return line tubing297 Screen298 Slot chs head screw299 Rivet300 Motor mounting bracket302 Lockwasher303 Hex shoulder nut306 C-face adapter flange307 Socket head screw311 Motor side coupling half312 Coupling insert

25

26

Parts List for R 5 1000/1600

Ref Description

001 Cylinder015 Rotor019 Shaft seal sleeve022 Vane025 Motor side endplate026 Opp. M.S. endplate028 End plate spacer030 Needle bearing031 Endplate spacer035 Shaft seal036 Shaft seal037 Retaining ring046 Hex head plug049 O-ring050 O-ring053 Hex head cap screw054 Lockwasher060 Tapered pin061 Cylindrical pin065 Shaft key066 Shaft key068 Connect piece for hyd. fitting069 O-ring070 Gas ballast line, A-side071 Gas ballast line, B-side072 Hydraulic fitting075 Exhaust box078 Sheet metal baffle079 Demister pad080 Perforated sheet metal083 Oil sight glass084 Ring gasket088 Oil fill plug089 Oil fill plug gasket096 O-ring099 Nipple100 Auto-type oil filter105 Cover plate106 Cover plate gasket107 Socket head cap screw108 Lockwasher115 Filter bracket116 Filter bracket117 Filter bracket120 Exhaust filter121 O-ring125 Filter spring assembly126 Socket head cap screw129 Baffle strainer, A side130 Baffle strainer, B side136 Perf. sheet metal screen137 Slot chase head screw138 Flat washer139 Flat washer140 Exhaust cover plate141 Cover plate gasket

Ref Description

291 Elbow assembly kit293 Oil steel tubing297 Screen298 Sheet metal screw299 Sheet metal nut300 Motor mounting adapter301 Socket head cap screw302 Lockwasher311 Motor side coupling half312 Coupling insert313 Pump side coupling half320 Distance spacer321 Cooling fan327 Retaining disk328 Hex head cap screw329 Lockwasher331 Socket set screw333 Socket set screw390 Eyebolt adapter391 Eyebolt392 Lockwasher393 Hex head cap screw394 Alignment pin400 Motor401 Hex head cap screw402 Lockwasher409 Spacer410 Frame411 Washer412 Lockwasher413 Hex head cap screw414 Hex head cap screw421 Rubber foot429 Sheet metal screw430 Nameplate431 Arrow label465 Ring gasket466 Plug467 Bypass plug471 Gas ballast valve assembly483 Ring gasket484 O-ring488 Socket head plug490 Nipple495 O-ring496 Float switch498 Socket head cap screw499 Lockwasher900 Elbow connector901 Temperature switch902 Temperature switch

Ref Description

142 Socket head cap screw143 Lockwasher147 Exhaust cover plate159 Exhaust valve168 O-ring169 Exh. valve cover plate175 Stud176 Lockwasher177 Hex head nut185 Cylinder/exhaust box gasket186 Hex head cap screw187 Lockwasher200 Drum exhaust box plug201 O-ring205 Cover plate206 Cover plate gasket207 Hex head cap screw208 Lockwasher210 Elbow pipe fitting211 Hydraulic straight fitting212 Oil tubing213 Hydraulic elbow fitting214 Reducer bushing225 Hydraulic banjo fitting230 Oil tubing237 Cooler guide238 Socket head cap screw239 Lockwasher241 Oil cooler242 O-ring243 Fan guard244 Cooler front cover245 Flat washer246 Hex head cap screw247 Socket head cap screw248 Lockwasher250 Inlet flange251 Valve plate252 Valve inlet guide253 O-ring254 Inlet check valve spring255 O-ring258 Ball260 Inlet flange261 Inlet screen265 Hex head cap screw266 Lockwasher270 Plug271 Ring gasket273 Distance bolt274 Lockwasher275 Oil return valve276 Ring gasket285 Oil recirc. screw286 Hydraulic banjo fitting290 Oil return tubing

27

AustraliaBusch Australia Pty. Ltd.30 Lakeside DriveBroadmeadows, Vic. 3047Tel: (03) 93 55 06 00Fax: (03) 93 55 06 99

AustriaBusch Austria GmbHIndustriepark Nord2100 KorneuburgTel: 02262 / 756 65-0Fax: 02262 / 756 65-20

BelgiumBusch N.V./Busch SAKruinstraat 79160 LokerenTel: (0)9 / 348 47 22Fax: (0)9 / 348 65 35

BrazilBusch do Brasil Ltda.Rod. Edgard Máximo Zambotto, Km 6413240-000 Jarinú-SPTel: (55) 11-4016 1400Fax: (55) 11-4016 1077

CanadaBusch Vacuum Technics Inc.1740, Boulevard Lionel BertrandBoisbriand (Montréal)Québec J7H 1N7Tel: 450 435 6899Fax: 450 430 5132

ChinaBusch Vacuum (Shanghai) Co., Ltd18 Bin Yang Road, ShanghaiChina 200235Tel: +86 21 6436 1919Fax: +86 21 5031 5766

Czech RepublicBusch Vakuum s.r.o.Pra ákova 10619 00 Horní HeršpiceBrnoTel.: +420 543 42 48 55Fax: +420 543 42 48 56

DenmarkBusch Vakuumteknik A/SParallelvej 118680 RyTel: +45 87 88 07 77Fax: +45 87 88 07 88

FinlandBusch Vakuumteknik OySinikellonpolku 301300 VANTAATel: 09 774 60 60Fax: 09 774 60 666

FranceBusch France S.A.Parc Technologiquede Bois Chaland CE 292291029 Evry CedexTel: 01 69 89 89 89Fax: 01 60 86 16 74

GermanyDr.-Ing. K. Busch GmbHSchauinslandstr. 179689 MaulburgTel: (0 76 22) 6 81-0Fax: (0 76 22) 6 81-194e-mail: sec.bu@busch.de

Busch – All over the World in Industry www.busch-vacuum.comDr.-Ing. K. Busch GmbHNiederlassung NordErnst-Abbe-Str. 1-325451 QuickbornTel: (0 41 06) 7 99 67-0Fax: (0 41 06) 7 99 67-77

Dr.-Ing. K. Busch GmbHNiederlassung WestNordring 3564807 DieburgTel: (0 60 71) 92 82-0Fax: (0 60 71) 14 71

Dr.-Ing. K. Busch GmbHNiederlassung Süd-OstGewerbestraße 390579 LangenzennTel: (09 01) 90 25-0Fax: (09 01) 90 25-25

Dr.-Ing. K. Busch GmbHAußenstelle Zella-MehlisAm Rain 1198544 Zella-MehlisTel: (0 36 82) 46 92 71Fax: (0 36 82) 46 92 73

IrelandBusch Ireland Ltd.A10-11 Howth Junction Business CentreKilbarrack, Dublin 5Tel: 00353 1 832 1466Fax: 00353 1 832 1470

ItalyBusch Italia S.r.l.Via Ettore Majorana, 1620054 Nova MilaneseTel: 0362 370 91Fax: 0362 370 999

JapanNippon Busch K.K.1-23-33, MegumigaokaHiratsuka City, KanagawaJapan 259-1220Tel: 0463-50-4000Fax: 0463-50-4004

KoreaBusch Korea Ltd.392-1 Yangji-Ri, Yangji-Myun,Yongin-si, Kyunggi-DoTel: 031) 321-8114Fax: 031) 321 4330

MalaysiaBusch (Malaysia) Sdn Bhd.6 Jalan Taboh 33/22Shah Alam Technology ParkSection 3340400 Shah AlamSelangor D. E.Tel: 03 5122 2128Fax: 03 5122 2108

NetherlandsBusch B.V.Pompmolenlaan 23447 GK WoerdenPostbus 20913440 DB WoerdenTel: (0)348 - 462300Fax: (0)348 - 422939

New ZealandBusch New Zealand Ltd.Unit D, Arrenway DriveAlbany, Auckland 1311P O Box 302696North Harbour, Auckland 1330Tel: 0-9-414 7782Fax: 0-9-414 7783

NorwayBusch Vakuumteknikk ASHestehagen 21440 DrøbakTel: 64 98 98 50Fax: 64 93 66 21

PolandBusch Polska Sp. z o.o.UI. Chopina 2787800 WtoctawekTel: (054) 2315400Fax: (054) 2327076

SingaporeBusch Vacuum Singapore Pte Ltd20 Shaw Road#01-03 Ching Shine BuildingSingapore 36 79 56Tel: (65) 6 408 0866Fax: (65) 6 288 0877

SpainBusch Ibérica S.A.C/. Penedès, 47-4908192 Sant Quirze del VallèsTel: 93 721 77 77Fax: 93 721 42 07

SwedenBusch Vakuumteknik ABBråta Industriområde435 33 MölnlyckeTel: 031 - 338 00 80Fax: 031 - 338 00 89

SwitzerlandBusch AGWaldweg 224312 MagdenTel: 061 / 845 90 90Fax: 061 / 845 90 99

TaiwanBusch Taiwan Corporation8F, No.5, Lane 155, Sec. 3, Pei Shen Rd.Shen Keng Hsiang,Taipei Hsien,Taiwan (222), R.O.CTel: (02) 2662 0775Fax: (02) 2662 0796

TurkeyVAKUTEKEmlak Kredi Ishani No: 17981130 Üsküdar-IstanbulTel: (216) 310 0573Fax: (216) 343 5126

United KingdomBusch (UK) LtdHortonwood 30-35TelfordShropshireTF1 7YBTel: 01952 677 432Fax: 01952 677 423

USABusch LLC516 Viking DriveVirginia Beach, VA 23452Tel: (757) 463-7800Fax: (757) 463-7407