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US VACUUM DURAVAC RP Series, Installation & Operation Manual

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DURAVAC “RP” SERIES 

Oil Lubricated, Rotary Piston Vacuum Pumps 

Models

   

RP-35C & RP-50C

INSTALLATION 

OPERATION 

MANUAL 

US VACUUM PUMPS LLC 

P.O. BOX 909 

CANTON, TX USA 75103 

TEL: 888-416-7366  FX: 877-416-7599 

EMAIL: [email protected] 

WWW.USVACUUMPUMPS.COM 

WARNING 

DO NOT OPERATE BEFORE 

READING MANUAL 

Summary of Contents for DURAVAC RP Series

Page 1: ...n Vacuum Pumps Models RP 35C RP 50C INSTALLATION OPERATION MANUAL US VACUUM PUMPS LLC P O BOX 909 CANTON TX USA 75103 TEL 888 416 7366 FX 877 416 7599 EMAIL USVACUUM EARTHLINK NET WWW USVACUUMPUMPS COM WARNING DO NOT OPERATE BEFORE READING MANUAL ...

Page 2: ...trial systems including heavy Current Voltage installations Depending on the operating conditions particularly where dangerous conditions may be present improper handling could lead to severe personal injury or property damage Those responsible for safety of the installation must therefore insure that ONLY QUALIFIED PERSONNEL ARE ALLOWED TO WORK ON THE MACHINE S THESE PERSONS ALWAYS HAVE AT THEIR ...

Page 3: ... or excessive exposure to oil mist or process materials from the discharge of the pump Do not discharge the pump into a closed room or a room without adequate ventilation Always use a discharge oil mist eliminator unless the pump discharge is vented to the open air Venting the outlet to open air is highly recommended CAUTION Disconnect the pump from the electrical supply at the main disconnect bef...

Page 4: ...TY PRECAUTIONS Page 2 INTRODUCTION Page 4 PERFORMANCE SPECIFICATIONS Page 6 DESCRIPTIONS Page 7 GENERAL INFORMATION Page 8 START UP Page 10 TROUBLESHOOTING Page 11 PARTS LIST EXPLODED VIEWS Page 15 WARRANTY STATEMENT Page 21 ...

Page 5: ..._____________________ Oil Type________________________________ Serial No ____________________________ Operating Vacuum________________________ Startup Date__________________________ Inlet Gas Composition_____________________ Motor Hp_____________ RPM____________ Accessories supplied______________________ NOTES ____________________________________________________________________________________ ___...

Page 6: ...inlet valve Air of gas is admitted Through these slots from the high vacuum side of the slide pin into the space between the piston and cylinder at certain parts of the cycle As there is no spring loading no pressure difference is required to operate this valve The outlet discharge valve is opened automatically by the compression of the air or gas in the pump against atmospheric pressure plus a sl...

Page 7: ... RP 35C RP 50C Displacement CFM 35 52 Ultimate Vacuum Partial pressure Torr 10 microns 0 010 mm Hg Motor Hp 2 3 Pump Speed RPM 424 612 Oil Capacity Gal 4 4 Inlet connection in 2 Flg 2 Flg Exhaust connection in 2 NPT 2 Flg Cooling Media AIR AIR Pump Weight Lbs 485 495 ...

Page 8: ......

Page 9: ...LL PORT 1 NPT DISCHARGE 1f ANSI FLANGE OIL DRAIN 26 37 f NPT 24 28 8 49 3 38 OIL DRAIN t NPT DIIENSKlNS NI N INCHES nm WEIGHT IN LBS lqj THIRD ANGLE PROJECTION E3 NO QTY 2 3 4 5 6 DESCRIPTION VACUUM PUMP MODEL RP50C WS ELECTRIC MOTOR 3hp 230 460v 1750rpm SOLENOID VALVE 460v N C GEARBOX COUPLING GUARD FRAME FABRICATED STEEL 3 SUCTION 2 NPT f 16 50 BOLT DOWN HOLES END VIEW 0 GENERAL REVISION REV DES...

Page 10: ... are designed to operate up to a maximum ambient temperature of 110 Deg F VACUUM CONNECTION All pipe lines should be as short as possible and should be no smaller in diameter than the inlet to the pump if it is absolutely necessary to run a long line the suction pipe should be increased 50 in diameter Conductance of long lengths of suction piping must be checked and the line sized large enough so ...

Page 11: ...clean vacuum installation C Standard threaded piping however is satisfactory and more readily installed The piping should be Carefully cleaned to remove any scales or chips Blow out any loose material with compressed air prior to installation All male threaded joints should be carefully doped screwed up tight and NEVER backed off to make parts align this is apt to cause a leak Paint the joints whi...

Page 12: ...st be vented outside the building even if a discharge oil mist filter is installed The pump exhaust should have a horizontal run to a drop out Tee and then go up if necessary Equip the Tee with a drain valve to drain off condensate from time to time as needed Oil mist eliminator filters are available to replace the piping When starting the pump or handling large amounts of air oil vapor in the for...

Page 13: ... the sight glass window Oil capacity 4 Gallons CHANGE OIL EVERY 500 750 OPERATING HOURS Check the oil for contamination on a weekly basis by shutting the pump off and draining some of the oil into a small glass or container through the oil drain port Oil life is dependent upon the condition to which it is exposed The oil must be changes after the first 100 hours of initial operation After the init...

Page 14: ...or contaminates from the vacuum pump oil Vapor contaminates in the pump oil can dramatically impair the pump performance by vaporizing during the low pressure section of the pumping cycle thereby preventing gas from being drawn into the pump Isolate the pump from the system and fully open the gas ballast valve and run the pump overnight If this is not possible partially open the valve during opera...

Page 15: ...by draining water from the pump oil drain valve before starting the pump DISCHARGE VALVES Discharge valves are located inside the oil reservoir under the oil baffle valve plate After draining oil from the pump remove valve assembly by removing the six 6 cap screws and valve gasket inspect valve discs and springs for wear Change if required Repair kits RP 35 Pt RKIT RP35 RKIT RP 50 Pt RKIT RP50 RKI...

Page 16: ...eneration On seal oil vacuum applications large amounts of water vapor is often distilled out of the seal oil from the degassifiac tion tank with the water vapor entering the seal oil vacuum pump The mixture of water and the vacuum pump lube oil inside the seal oil vacuum pump will result in the formation of an oil water emulsion that will reduce the viscosity of the vacuum pump lube oil Also VARN...

Page 17: ...ing Remedy Tighten if necessary Possible cause Exhaust valve not sealing Remedy Disassemble and clean if necessary Possible cause Threaded connections leaking Remedy Paint with vacuum sealant Possible cause Shaft seal leaking Remedy Inspect and replace if necessary Possible cause The internal parts are worn or damaged Remedy Contact U S Vacuum for instructions TROUBLE The pump is excessively noisy...

Page 18: ...exhaust side or expels oil droplets from the exhaust Possible cause No exhaust filter in place Remedy Install exhaust filter Possible cause The exhaust filter is not properly seated with the o ring in filter base or filter material is cracked Remedy Exhaust filter not properly seated with o ring replace if necessary Check element and se cure Possible cause The exhaust filter is clogged with foreig...

Page 19: ...RP35 50 VACUUM PUMP 61 57 56 _ 55 0 58 59 G 18 19 20 I I 25 27 28 51 50 49 12 ll ttf ll 34 7 5 48 ...

Page 20: ...N 14 SHORT SHAFT SLEEVE A 1 STEEL 15 LONG HINGE BAR 1 IRON STEEL ETC 16 LONG PISTON 1 IRON 17 LONG ECCENTRIC 1 IRON 18 KEY A 1 STEEL 19 SHAFT 1 STEEL 20 KEY B 1 STEEL 21 KEY C 1 STEEL 22 OIL DRAIN VALVE 1 COPPER 23 SOLENOID VALVE 2 STEEL 24 PUMP BODY 1 IRON 25 MIDDEL PLATE A 1 IRON 26 MIDDEL PLATE B 1 IRON 27 SHORT ECCENTRIC 1 IRON 28 SHORT PISTON 1 IRON 29 SHORT HINGE BAR 1 IRON STEEL ETC 30 SHOR...

Page 21: ...OIR COVER 1 IRON ALUMINUM 49 SEPARATOR 1 IRON 50 JOINT 1 COPPER 51 OIL PIPE 1 COPPER 52 BOLT 6 STEEL 53 POPPET VALVE 3 STEEL 53A BOLT 3 STEEL 53B WASHER 3 STEEL 53C VALVE CAP 3 STEEL 53D SPRING 9 STEEL 53E POPPET 3 STEEL 53F BOLT 12 STEEL 53G VALVE DECK 3 STEEL 53H GASKET 3 PAPER 54 BOLT 10 STEEL 55 BOLT 4 STEEL 56 OIL RESERVOIR 1 IRON 57 GASKET 1 RUBBER 58 O RING 1 VITON 59 OUTLET FLANGE 1 STEEL ...

Page 22: ...ems must be held for seller s inspection and returned to sellers Ex works point upon request THERE ARE NO WARRANTIES EXPRESSED IMPLIED OR STATUTORY WHICH EXTENDS BEYOND THE DESCRIPTION ON THE FACE HEREOF INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS OF PURPOSE After buyers submission of a claim as provided above and its approval seller shall at it s option eith...

Page 23: ...NOTES ...

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