Vickers Piston Pumps - Electrical and Industrial …

1 Released 06 01 89I 3243 SPressure LimitingLoad Sensing CompensatorPVB 5 Thru 29 CVP 12 Service Data:CAUTIONPOSITION GASKET WITHSMALL END OF TEARDROPHOLE POINTING INDIRECTION OF COMPENSATORADJUSTING COMPENSATOR MOUNT FOR PVB-10/15/20/29 PUMPWITH SHAFT ROTATIONOR PVB-5/6 PUMP WITH COMPENSATOR MOUNT FOR PVB-10/15/20/29 PUMPWITH SHAFT ROTATIONOR PVB-5/6 PUMP WITH SEALS FOR THECVP COMPENSATOR AREINCLUDED IN BASIC PUMP SEAL PUMPPARTS DRAWINGPVB-5/6 PVB-10/15 PVB-20/29I-3280-S, I-3261-SI-3268-S, I-3282-SI-3267-S, I-3293-SF343740 PLUGF113000 PLUGF500815 BODYF924040 CHECKVALVE S/AF433453 ORIFICE(TORQUE TO 15-20 LB. IN.)F113000 PLUGF422234 SPOOLF596359 SEATF581073 SPRINGF596366 SEATF585164 ADJ. SCREWF10358 SCREW (4 REQ D)(TORQUE TO 60-70 LB. IN.)VF151246 O RINGVF154005 O RINGVF173792 O RINGF239371 SPRINGF234204 SEATF422233 SPOOLF241621 ADJ.

2 PLUGF17077 LOCK WIREF17079 SEALF363889 PLUG(TORQUE TO 50-75 LB. FINAL ADJUSTMENT.)VF154127 O RINGFINCLUDED IN CVP-12 COMPENSATOR KIT 924069 SPIROLOX RING154005 O RINGVALVE PLATEPISTON ROD O RING244956 GASKETSECTION :F244956 GASKETYYV ickers Piston PumpsCVP-12 Compensator Adjustment ProcedureRefer to front page and test circuitdiagram. Perform the following steps:1. Turn pressure limiting adjusting plug241621 clockwise until seated. Turnin load sensing adjusting screw585164 to approximately sectional view Operate the pump at the shaft speed(rpm) indicated in Table 1. Warm upsystem fluid to 110-130_F(38-54_C). Maintain 0-0,35 bar (0-5)psi at pump Adjust valve A to obtain 104 bar(1500 psi) at P2 .4. Adjust valve B to obtain a pumpflow set point that is specified inTable Turn load sensing adjustment screw585164 until bar (140-180psi) pressure differential is obtainedbetween P1 and P2.

3 MODELRPMPUMP FLOWSET POINTnP DIFFER-ENCE @ 95%FLOWPVB515 L/MINPVB615 L/MIN (4 USGPM)PVB10240023 L/MIN (6 USGPM)PVB1538 L/MIN (10 USGPM)+5 / 15 PVB20200045 L/MIN (12 USGPM)PVB29200057 L/MIN (15 USGPM)Table 16. Vary the pump outlet flow from 5,67L/min ( USgpm) to the pump flowset point with valve B . A differentialpressure reading should be withinthe value shown in Table pressure is defined asthe pressure between thecompensator cracking pressure(pressure at which the outlet flowequals 95% of full flow) and thepressure at the pump flow set Turn pressure limiter adjustmentplug 241621 counterclockwise untilapproximately .60 inch of threadsare exposed. Close valve A .Minimum pressure at P2 must notexceed 17 bar (250 psi) forPVB5/6/20/29 units or 24 bar (350psi) for PVB10/20 Turn the pressure limiter plugclockwise to retract the yoke to flowcutoff position (minimum stroke).

4 Pressure at P2 must not exceed140 bar (2000 psi) for PVB6/15/29units, or 210 bar (3000 psi) forPVB5/10/20 Shut down the system after thecompensator adjustments arecompleted. Install 154127 O ringon 363889 plug. Install the plug intoend of compensator body andtighten to 50-75 lb. in. ( ).10. Use a .089 drill bit and drill a holethrough the compensator body andpressure limiter adjustment plug asshown in sectional view Install lock wire into hole. Twist thewire and install the seal on the lockwire. Squeeze the seal to the lockwire with a suitable Flow Control ValveTest Circuit DiagramPVBMP1P1-P2P2 BAVFor satisfactory service life of these components, use full flow filtration to provide fluid which meets ISO cleanliness code 16/13or cleaner. Selections from pressure, return, and in-line filter series are recommended. Eaton Hydraulics, Incorporated 2000 All Rights ReservedPrinted in