High Pressure Relief Valve - Hprv - Danfoss DDC20 Service Manual

Service Manual
DDC20 Axial Piston Pumps
Adjustments

High Pressure Relief Valve - HPRV

© Danfoss | August 2017
6. When the desired charge pressure setting is achieved, remove the gauges.
Charge pressure relief valve
J320
QJ040
L200
L100
Charge pressure
Model code
07
18
* This is the actual charge pressure port gauge reading minus the case pressure port gauge reading.
-1
Factory set at 1800 min
The HPRV valves are pre-set at the factory. No adjustment is possible.
If you suspect a HPRV valve malfunction, replace valve with identical relief setting and test operation of
Minor Repair
pump. Refer to on page 15 for replacement procedures.
Whenever you replace or open an HPRV, check for proper pump operation by cycling through its full
operating range.
P109626
Actual charge pressure
7 bar ± 1 bar
18 bar ± 1.5 bar
(rpm) with a reservoir temperature of 50° C [120° F].
L1120413 | AX00000135en-US0302 | 11