23
en
Fault
Possible cause
Remedy
The needle metering valve
switches but no lubricant is
ejected
The feed pump is not supplying
lubricant
Consult the operating manual for the
feed pump
The needle metering valve
switches but no lubricant is
ejected
Material pressure too low
Increase pump pressure
The dosing valve is leaking
The control air pressure/coun-
ter-pressure of the spring is too low
Increase the control air pressure,
reduce the material pressure, install
a stronger spring
The dosing valve is leaking
Defective seals
Replace seals
Air in the system
Air pockets in the grease container
Loosen supply hose. Bleed system.
Reconnect supply hose.
Air pockets in the hoses
Leaky valve
Defective seals
Replace seals
Irregular dosing
No constant grease and air
pressure.
Upstream installation of optional
material pressure regulator MDR
Training of personnel
Only trained and instructed personnel who have read
and understood all points in the operating instruc-
tions may work on the product. The personnel must
also be able to control the operating states, and iden-
tify and implement the interrelated safety aspects.
Personnel in training may only work on the product
under the supervision of qualified personnel.
Troubleshooting, fault resolution
CAUTION
All of the faults described below may
only be resolved by trained, qualified
personnel.
