Rev. 1.2
Assembly Instructions
– Dosing Valves WDV-0x
Page 16 of 34
Walther Systemtechnik GmbH
– D 76726 Germersheim
Telefon: +49 (0)7274-7022-0 Telefax: +49 (0)7274-7022-91
http://www.walther-2000.de
8.5 Customer Service / Support
Walther Systemtechnik GmbH
Hockenheimer Straße 3
D-76726 Germersheim
Germany
Phone
++49(0)7274-7022-0
Fax
++49(0)7274-7022-91
Internet
www.walther-2000.de
9 Troubleshooting
9.1 General Information
IMPORTANT
First check all supply lines for connection and serviceability.
Only a trained technician will take care of the below described malfunctions.
In case of serious problems that cannot be resolved, please contact the Walther Systemtechnik GmbH
customer service.
Malfunction
Possible cause
Action
Valve is actuated, but
no lubricant is ejected.
Is no lubricant fed by
the feed pump?
Check feed pump.
See operating manual of feed pump.
Check venting screw of feed pump.
See operating manual of feed pump.
Leakage
Check dosing valve.
Leakage at bore hole
Seals defective
Exchange seals
Permanent signal from
sensor
Sensor defective
Exchange sensor
Dosing volume too
small
Check dosing valve; check setting of dosing
volume and increase, if necessary; check position
of sensors
Feed pressure of
grease too high
Reduce pump pressure to max. operating
pressure of dosing valve; possibly employ a
material pressure regulator
No signal from sensor
Broken cable
Exchange cable
Sensor defective
Exchange sensor
Dosing piston in starting
position
Check pump pressure; check bore hole of grease
supply for contaminants
Air pockets in grease
system.
Air pockets in grease
container.
Air pockets in tubing.
Disconnect tubing to dosing valve. Drain a quan-
tum of grease. Restart with dosage adjustment
screw set to maximum.
