Parker Series V14 Service Manual

Also see for Series V14: Service manual Spare parts manual

Parker Series V14 Service Manual Manual pdf 16 page image

16 Parker HannifinPump and Motor DivisionTrollhättan, SwedenService ManualSeries V14Bulletin HY30-5510-M1/UKHPC, HP control with pressure cut off- The pressure cut off overlays theHP control.- If the system pressure increase, dueto the load or reduced motor displacement,to the setting of the pressure cut off valve,the control increases displacement.When displacement increases, the availabletorque increases as well but the systempressure remains constant.- Pressure cut off range is 75 - 400 bar(1100 - 5800 psi)- Threshold pressure is preset from factoryto 10 bar (145 psi) but is adjustable between5 and 50 bar (70 - 700 psi).Cut off pressure setting procedure:Untie the locking nut. One turn of the setting screw corre-sponds to 48 bar. When desired pressure level is reached,tighten the locking nut.1. Install 0 - 600 bar (0 - 8500 psi) gauges in port X1 and X4and a 0 - 60 bar (0 - 850 psi) gauge in port X5.2. Set the cut off pressure to minimum by turning thesetting screw counter-clockwise until a distinct stop isreached.3. Set the motor displacement to minimum by applyingrequired pressure to port X5.4. Increase the pressure in one of the main ports A/B (e.g. byblocking the motor shaft) to desired cut off pressure level.5. Turn the setting screw clockwise, until the pressure inport X1 reaches the same pressure level as in X4.Desired cut off pressure has been reached.HPC schematic (shown: port X5 not pressurized;control moving towards max displacement).V14_HPC_schematic.epsLeif A./10-08-11A BX1X4(1/4" BSP)ECFDMinMaxX5Max 100 barCut off setting screw