10 Faults
This chapter contains information about how to rectify problems with the valve. It also
describes the personnel qualifications 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
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 qualified staff, who must
observe the safety precautions.
Fault
Cause
Remedy
Valve does not work
Fault in the controller
Check the system configuration
No compressed air or com-
pressed air too low
Check compressed 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 - 105 / 128
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