Danfoss Pressure compensator valve kit Installation guide
Service Kit Instructions
Series 45
Pressure compensator valve kit
Removal and Installation
Remove the PC valve cartridge assembly from the pump housing.
Install the cartridge assembly into the pump housing and torque as indicated.
Check and adjust the pressure compensator setting before putting the pump back into operation.
O-ring
11/16 in. hex wrench Torque: 37 Nm (27 lbsf•ft)
Back up
Ring
Gauge Installation
M2 |
System |
300 bar or 5000 psi gauge |
|
Pressure |
7/16 — 20 O-Ring Fitting |
|
|
|
"L1" |
Case |
10 bar or 100 psi gauge |
or |
Pressure |
7/8-14 O-ring Fitting |
"L2" |
SYSTEM PRESSURE
GAGE PORT M2
|
CASE DRAIN PORT "L2" |
CASE DRAIN PORT "L1" |
|
LEFT SIDE VIEW |
RIGHT SIDE VIEW |
© Danfoss, 2013 |
BLN-10140 • Rev AA • September 2013 |
1 |
Adjustment
WARNING
Take necessary precautions to secure the work function so no movement occurs while performing the following procedure in order to prevent injury to the technician and bystanders.
Install a pressure gauge in gauge port M2 to measure system pressure. Install a pressure gauge in case drain port L1 or L2 to measure case pressure.
Loosen the PC adjustment seal lock nut. Turn the PC adjustment screw counterclockwise until the spring pressure is released, then turn an additional two (2) turns counterclockwise. Temporarily hand tighten the adjustment seal lock nut.
If a remote PC control is installed, disconnect the remote PC connection and cap the line. Plug the remote PC port in the pump housing.
Start the prime mover and allow the fluid to reach normal operating temperature.
Operate the prime mover at normal speed. Loosen the second stage adjustment seal lock nut. Turn the second stage adjustment screw until the system pressure gauge reads 15 bar (220 psi) HIGHER than the case pressure gauge. Hold the second stage adjustment screw in position and torque the seal lock nut.
Loosen the PC adjustment seal lock nut. Turn the PC adjustment screw clockwise until the system pressure reaches the desired value, as indicated on the system pressure gauge. (This setting is referenced to case pressure.) Hold the PC adjustment screw in position and torque the seal lock nut.
Stop the prime mover and remove the pressure gauges installed in gauge port M2 and case drain port L1 or L2. Reinstall the plugs in the ports.
If a remote PC control is installed, reconnect the line to the remote PC valve.
|
Remote PC Port |
PC Adjustment Screw |
Second Stage |
Adjustment Screw |
|
4 mm int hex wrench |
4 mm int hex wrench |
|
Second Stage |
PC Adjustment |
Adjustment |
Seal Lock Nut |
Seal-Lock Nut |
13 mm hex wrench |
13 mm hex wrench |
Torque: 23 Nm (17 lbsf•ft) |
Torque: 23 Nm (17 lbsf•ft) |
Series 45 Open Circuit Pump with PC Control |
|
PC Adjustment |
Remote PC Port |
Screw |
|
Second Stage
Adjustment Screw
Cross-Section of PC Control
© Danfoss, 2013 |
BLN-10140 • Rev AA • September 2013 |
2 |
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