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Malfunctions
Malfunctions
In the event of malfunctions immediately deactivate the valve and secure it against inad-
vertent reactivation. Malfunctions may only be remedied by qualified staff, who must
observe the safety instructions.
Malfunction Cause Remedy
Valve does not work Fault in the control system Check the system configuration
No compressed air or
compressed air too low
Check the compressed air supply
Check air hoses for free passage
and air tightness
Fault in the electrical system Check actuation / external controller
and routing of electrical lines
Ext. solenoid valve defective Replace the solenoid valve
Tank pressure too high Reduce the tank pressure to 1 bar
Valve does not close Dirt/foreign material between
valve seat and valve disk
Clean valve housing and valve seat
Sealing surfaces damaged Replace seat and valve disk
Locking screw in the valve disk
not adjusted
Adjust the locking screw
The proximity switch is set too
high on the lifting actuator with
feedback version
Set the proximity switch, see “Setting
the Proximity Switches“ (Page 36)
Valve does not open at
vacuum pressure
Valve seat and valve disk stick
together
Check and clean valve seat + valve
disk
Valve disk is blocked mechani-
cally
Remove the blockage
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