Parker D1VW -SC Series Operating Instructions

Directly operated and pilot operated directional control valves
Series D1VW / D1DW / D3W / D3DW / D31DW / D41VW / D81VW / D91VW
11
Translation from German
Parker Hannin Corporation
MSG11-5715-662 DCV UK.indd 21.07.22
Problem / Error message Possible cause Actions
Leakage at the valve O-ring at the mating ange leak-
ing or missing
Shut down the system/ma-
chine immediately. Replace
the O-ring
Plug, plunger tube or case leak-
ing
Shut down the system/ma-
chine immediately. Replace
the valve with a new one of
the same series
Valve does not switch on Valve not correctly wired Check the electrical connec-
tions
No electrical signal from general
control system
Check the control system
Defective coil Measure coil resistance. Re-
place defective coil
Piston jams Check the operating condi-
tions
Check the torques of the fas-
tening bolts
If the operating conditions and
the torques are correct, return
the valve to the manufacturer
for inspection
No pilot oil pressure (pilot oper-
ated valves)
Check pilot oil pressure and
delivery
Valve does not switch o󰀨 Electrical control system for the
coil not deactivated
Check the control system
Operating conditions incorrect Check the operating condi-
tions
Silting e󰀨ect Check the purity of the medi-
um – if necessary improve l-
tering and replace the medium
Actuate the valve periodically
Broken spring Return the valve to the manu-
facturer for inspection.
Pilot oil discharge interrupted Check pilot oil discharge and
delivery
Position control not supplying a
correct signal.
The wiring is not connected cor-
rectly
Check wiring
Power supply to position control
outside permitted range
Check the power supply
Temperature drift. Check ambient temperature at
the valve
Check the temperature of the
medium at the valve
Position control incorrectly set Return the valve to the manu-
facturer for inspection

Parker D1VW -SC Series Specifications

General

Brand	Parker
Model	D1VW -SC Series
Category	Control Unit
Language	English