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17 Troubleshooting
Error
Handwheel cannot be turned
Proximity switches also respond in the
open position
GEMÜ 650TL
Possible cause
Handwheel faulty
Stroke limiter and seal adjuster incor-
rectly set
Use of wrong proximity switches
Damping piece incorrectly adjusted
34 / 42
Troubleshooting
Replace the handwheel for diaphragm
size 8. Replace the actuator for dia-
phragm size 10 and 25.
Release and reset stroke limiter and seal
adjuster
Only use M8x1 proximity switches which
can be mounted flush
Reset damping piece
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