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15 Troubleshooting
15 Troubleshooting
Error
The product doesn't open or doesn't open
fully
The product doesn't close or doesn't
close fully
The product leaks between actuator and
valve body, medium escapes at the valve
spindle
Connection between valve body and pip-
ing leaking
Valve body leaks
GEMÜ B44
Possible cause
Foreign matter in the product
Control medium not connected
Actuator defective
Control medium not connected or con-
nected incorrectly
Foreign matter in the product
Actuator defective
Spindle nut or spacer bolt loosened
Wearing parts of spindle seal faulty
For clamp connections: Sealing clamp is
loose
For clamp connections: Gasket faulty
Incorrect installation
Incorrect installation
Bolts of the ball valve body are loose
26 / 34
Troubleshooting
Remove and clean the product
Connect control medium
Replace the actuator
Connect the control medium or check the
control medium supply
Remove and clean the product
Replace actuator (see chapter "Removing
the actuator from the ball valve body" and
"Actuator mounting on the ball valve
body")
Tighten spindle nut or spacer bolt
Replace wearing parts
Retighten sealing clamp
Replace gasket
Check installation of valve body in piping
Check installation of valve body in piping
Retighten bolts
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