10 Faults
This chapter
contains information about how to rectify problems with the valve. It also
describes the personnel qualications required for the individual actions.
It is addressed to all persons who carry out actions related to the valve.
INFO During all troubleshooting, observe the chapter
2 Safety
of this Operating
Instructions.
Malfunctions and remedies
In the
event of malfunctions, immediately deactivate the valve and secure it against in-
advertent reactivation. Malfunctions may only be remedied by qualied staff, who must
observe the safety precautions.
Fault Cause Remedy
Valve does not work Fault in the controller Check the system conguration
No compressed air or com-
pressed air too low
Check compr
essed air supply
and check air hoses for free pas-
sage and air tightness
Fault in the electrical system Check actuation / external con-
troller and routing of electrical
lines
Solenoid valve defective Replace the solenoid valve
Valve does not close Dirt/foreign material between
valve seat and valve disk
Clean valve housing and valve
seat
Valve closes too slowly O-rings in the actuator and con-
trol top are dry (friction losses)
Grease O-rings
Leakage in the area of the valve
housing
Housing O-rings defective Remove the valve, change the
housing O-rings
Leakage in the lantern Seal ring defective Replace the gasket
Leakage in the leakage cavity V-rings defective Replace the V-rings
9.7 Maintenance - 89 / 104
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