Danfoss PVG 32 - User Manual

Other manuals for Danfoss PVG 32

Service Manual44 pages

Technical Information76 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.
B
Brian ToddAug 21, 2025
What causes electrical supply issues in Danfoss PVG 32?
- S
  Steven MooreAug 21, 2025
  If you are experiencing electrical supply issues with your Danfoss Control Unit, it could be due to a lack of electrical power, in which case you should repair as needed. Alternatively, a faulty neutral position switch could be the cause, requiring replacement of the switch.

Summary

Function

Safety in Systems

Discusses valve failure and necessary protection against consequences.

PVG 16;32 sectional drawings

Sectional views of PVG 16/32 to identify components for servicing.

PVG 128;256 Sectional Drawing

Sectional view of PVG 128/256 for component identification.

Installation

PVG 16 installation

Exploded view and oil flow direction for standard assembled PVG 16.

PVG 16 Plug orientation

Shows dimensions of assembled product based on PVB usage and mounting threads.

PVG 16;32 pump side module, PVP

Details pump side and max flow setting for PVP module.

PVG 16 pressure setting, PVP;PVB

Illustrates pressure setting and relief valve adjustment for PVP/PVB.

PVG 16 installation of lever

Shows lever installation positions and range for PVM.

PVG Bleeding

Recommended procedure for bleeding PVG 16/32 if installed vertically.

PVG 16 technical data overview

Overview of technical data for PVG 16, including control and operating conditions.

PVG 32 installation

Exploded view and oil flow direction for standard assembled PVG 32.

PVG 32 pressure setting

Illustrates pressure setting and relief valve availability for PVG 32.

PVE series 7 for PVG 32

Exploded views, connector overview, and operating conditions for PVE series 7.

PVG 128;256 installation

Exploded view and oil flow direction for standard assembled PVG 128/256.

PVG 128;256 pressure setting

Shows pressure setting for PVG 128/256 including relief valve LSA/LSB.

Service Parts

PVG acronyms found in service parts

Glossary of acronyms used in the service parts list.

PVG 16 service parts

Exploded view and parts list for PVG 16 pump side module PVP.

PVG 16 pump side module PVPV

Exploded view and parts list for PVG 16 pump side module PVPV.

PVG 16;32 electrical LS pressure unloading valve, PVPX

Exploded view and parts list for PVPX unloading valve.

PVG 16 PVBS, main spool

Exploded view and parts numbers for PVG 16 PVBS main spool.

PVG 16 PVMD cover

Exploded view and parts list for PVG 16 PVMD cover.

PVG 16 PVE S6 PVEO on;off actuator

Exploded view and parts list for PVEO on/off actuator.

PVG 16 PVE S6 PVEA, proportional actuator

Exploded view and parts list for PVEA proportional actuator.

PVG 16;32 PVS;PVSI end plates

Exploded views and kits for PVG 16/32 PVS/PVSI end plates.

PVG 16 seal kits

List of seal kits for PVG 16 based on module type.

PVG 32 service parts

Exploded view and parts list for PVG 32 pump side module PVP.

PVG 32 basic module, PVB

Exploded view and kits for PVG 32 basic module PVB.

PVG 32 PVHC electrical actuation

Exploded view and kits for PVHC electrical actuation.

PVG 32 PVDI directional indicator

Exploded view and kits for PVDI directional indicator.

PVG 128;256 PVS end plates

Exploded views of PVSI end plates for PVG 128/256.

PVG 128;256 PVAS stay bolts

Exploded views and kits for PVAS stay bolts on PVG 128/256.

PVG 128;256 seal kits

List of seal kits for PVG 128/256 based on module type.

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