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GEMÜ SUPM
11 Troubleshooting
11 Troubleshooting
Error
Error cause
Troubleshooting
Working medium escapes via optical
position indicator
Piston faulty
Replace pneumatic stainless steel
actuator and check control medium for
impurities
Control medium escapes from leak
detection hole
Spindle seal leaking
Replace pneumatic stainless steel
actuator and check control medium for
impurities
The product doesn't open or doesn't open
fully
Diaphragm pin broken off in the
compressor
Remove the diaphragm pin from the
compressor, replace the valve body
Clamp not fitted
Fit clamp
Diaphragm pin is damaged
Perform visual inspection of the
diaphragm pin for damage, replace the
valve body if necessary
Control pressure too low
Operate the product with the control
pressure specified in the datasheet
Pilot valve faulty
Replace the pilot valve
Actuator spring faulty (indicator spindle
no longer moves to the stop)
Replace pneumatic stainless steel
actuator
Control medium not connected
Connect the control medium
Valve body not unlocked in the actuator
(operating position)
Check that the indexing plunger is
unlocked (operating position), unlock the
indexing plunger* if required
The product is leaking downstream
(doesn't close or doesn't close fully)
Diaphragm pin broken off in the
compressor
Remove the diaphragm pin from the
compressor, replace the valve body
Clamp not fitted
Fit clamp
Diaphragm pin is damaged
Perform visual inspection of the
diaphragm pin for damage, replace the
valve body if necessary
Operating pressure too high
Operate the product with the operating
pressure specified in the datasheet
Actuator spring faulty (indicator spindle
no longer moves to the stop)
Replace pneumatic stainless steel
actuator
Valve body not locked in the actuator
(installation position)
Check that the indexing plunger is locked
(installation position), lock the indexing
plunger if required
Connection between valve body and
piping leaking
Incorrect installation
Check installation of valve body in piping
Valve body connection to piping is
leaking
Clamp/hose clips/cable ties are loose
Tighten clamps/hose clips/cable ties
Gasket faulty
Replace gasket
Connection spigot damaged
Replace the valve body
The product is leaking between the
distance piece and valve body
Diaphragm torn/torn off
Replace the valve body
Operating pressure too high
Operate the product with operating
pressure
Valve body is leaking
Valve body faulty
Replace the valve body
