No Cylinder/Motor Response In Either Direction When Remote Controller Is Actuated - Danfoss PVG 32 Service Manual

Service Manual
PVG 32 Proportional Valve Group
System Troubleshooting
Troubleshooting flow chart
Problem? Problem? Problem?
Mechanical Mechanical Mechanical
Mechanical Mechanical Mechanical

No cylinder/motor response in either direction when remote controller is actuated

Cause
Verify if fault is mechanical, electrical
or hydraulic
Sticking main spool
Internal filters blocked
© Danfoss | February 2017
No No No
No No No
No No No
No No No
Hydraulic Hydraulic Hydraulic Hydraulic
Hydraulic Hydraulic Hydraulic Hydraulic
Electrical Electrical Electrical Electrical
Electrical Electrical Electrical Electrical
Check
Operate manual lever to confirm mechanical or
electrical or hydraulic
Remove manual, electrical, and hydraulic actuators
from the valve section. Remove main spool from valve
section and inspected for damage. If no damage
reinstall the main valve spool and it should move
freely in the valve section bore.
Check movement of manual lever when electrical
controller is operated
Check movement of manual lever when hydraulic
controller is operated
If none of the above check pump per manufacturers
recommended procedure
Check for blockage in internal filters
No No No
No No No
No No No
No No No
Electronic Electronic Electronic Electronic
Electronic Electronic Electronic Electronic
Software Software Software
Corrective action
If moving the manual lever operates the cylinder/motor
check electrical or hydraulic
Replace the valve module and main spool. If any damage
is found on the main spool
If manual lever does not move check electrical voltage
signal from controller, wiring at the PVE module
If manual lever does not move check hydraulic controller
pressure at the PVG valve module - 25 Bar [360 PSI]
Repair or replace pump per manufacturers
recommended procedure
Remove blockage
11039167 | AX00000031en-US0301 | 15
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