Danfoss PVG 32 User Manual (English)

Other manuals for Danfoss PVG 32

Technical Information76 pages

Service Manual44 pages

Application Guide12 pages

Installation Guide9 pages

Questions and Answers:

S
Sean BeanJul 26, 2025
Why is my Danfoss Control Unit cylinder/motor operating without remote being operated?
- R
  Rodney PollardJul 26, 2025
  If the Danfoss Control Unit cylinder or motor operates without remote controller activation, there might be several reasons. First, check and torque the spool control tension rod to 8 Nm [70 lbf•in]. Second, the electrical feedback transducer might not be in a neutral position, requiring replacement. Third, the remote electrical controller neutral position switch could be faulty, necessitating repair or replacement of the switch or wiring. Fourth, a sticking main spool in the valve section could be the issue; remove the actuators, inspect the spool for damage, and reinstall it, ensuring it moves freely. Finally, contamination in the hydraulic oil could be the cause, requiring a flush of the hydraulic system and replacement with clean, filtered oil.
L
Leah PetersJul 31, 2025
What to do if Danfoss Control Unit cylinder/motor responds in one direction only?
- M
  mholtJul 31, 2025
  If your Danfoss Control Unit cylinder or motor only responds in one direction, it could be due to several factors. There might be air in the system; look for foam or bubbles in the reservoir and check for leaks on the inlet side of the charge pump. Internal leakage could also be a cause; install a loop flushing defeat option and monitor case flow – excessive flow may indicate the motor needs major repair, so contact Danfoss Service. Other potential issues include faulty shock valves (replace them), solenoid actuation problems (repair wiring to the PVE module), restricted main spool travel (back out the manual stop on the manual controller), or a faulty remote electrical controller (repair or replace it).
M
Michael MillerAug 4, 2025
Why does the main valve spool move without oil passing to cylinder/motor in my Danfoss PVG 32?
- B
  Brenda ChambersAug 4, 2025
  If the main valve spool in your Danfoss Control Unit moves without oil passing to the cylinder or motor, several issues could be responsible. First, ensure there is sufficient oil supply to the valve by checking the pump per the manufacturer's procedure. Second, if equipped, the optional pressure compensator in the valve section might not be functioning correctly, requiring spool replacement. Third, the cylinder or motor load may be too high for the system's pressure setting; if the pressure is set to specification, lower the load on the cylinder or motor. Fourth, blocked LS galleries could be the cause, requiring the removal of the blockage. Fifth, a faulty shuttle valve may need repair or replacement. Finally, a blocked thermal orifice may necessitate replacement.
M
Michael StevensAug 8, 2025
How to fix slow cylinder/motor response in Danfoss PVG 32 Control Unit?
- I
  ivan91Aug 8, 2025
  If your Danfoss Control Unit cylinder or motor responds slowly to remote electrical or hydraulic controller actuation, it could be due to insufficient system pressure. Adjust the pressure setting to the valve specification or the pump manufacturer's specification. Another cause might be limited main spool travel. Adjust the manual lever stops and torque the jam nuts to 8 Nm [70 lbf•in], being careful not to exceed the maximum torque. Finally, an incorrect signal voltage from the electrical controller could be the problem, requiring repair or replacement of the electrical controller.
D
Dawn WilliamsAug 13, 2025
What to do if Danfoss Control Unit has no cylinder/motor response?
- W
  William ReedAug 13, 2025
  If there is no cylinder or motor response in either direction when the remote controller is actuated on your Danfoss Control Unit, first verify whether the fault is mechanical, electrical, or hydraulic by operating the manual lever. If that's not the issue, a sticking main spool could be the cause; remove the manual, electrical, and hydraulic actuators from the valve section, then remove and inspect the main spool for damage. If no damage is found, reinstall the main valve spool, ensuring it moves freely in the valve section bore. Another potential problem is blocked internal filters, which would require removing the blockage.
J
Jonathan HallAug 17, 2025
Why is there hydraulic pilot control pressure problem in my Danfoss PVG 32?
- J
  Joshua StevensAug 17, 2025
  If you're experiencing issues with the hydraulic pilot control pressure in your Danfoss Control Unit, it could be due to insufficient pilot pressure. Check the pilot oil pressure, ensuring there's a 5-15 bar [72-220 psi] delta between the A and B ports on the remote. Alternatively, there might be air in the pilot line, which would require bleeding the air from the pilot lines at the PVH.

Danfoss PVG 32 Specifications

General

Category	Control Unit
Maximum working pressure	350 bar
Size	32
Type	Proportional Valve
Maximum operating pressure	420 bar
Porting pattern	ISO 4401
Electrical connection	AMP