Troubleshooting - Gemü R477 Tugela Betriebsanleitung

13 Troubleshooting

13 Troubleshooting
Error
The product doesn't open or doesn't open
fully
The product leaks downstream (doesn't
close or doesn't close fully)
The product doesn't close or doesn't
close fully
Connection between valve body and pip-
ing leaking
Valve body leaks
Increased switching noises when opening
the product
GEMÜ R477 Tugela
Possible cause
Actuator defective
Operating pressure too high
Foreign matter in the product
The actuator design is not suitable for the
operating conditions
Flange dimensions do not comply with
specifications
Inside diameter of piping too small for
nominal size of product
Operating pressure too high
The actuator design is not suitable for the
operating conditions
Foreign matter in the product
Incorrect installation
Threaded connections / unions loose
Sealing material faulty
Valve body leaks or is corroded
Incorrect installation
When the disc is in the closed position,
this may cause a higher breakaway
torque
52 / 60
Troubleshooting
Replace the actuator
Operate the product with operating pres-
sure specified in datasheet
Remove and clean the product
Use an actuator that is designed for the
operating conditions
Use correct flange dimensions
Install product with suitable nominal size
Operate the product with operating pres-
sure specified in datasheet
Use an actuator that is designed for the
operating conditions
Remove and clean the product
Check installation of valve body in piping
Tighten threaded connections / unions
Replace sealing material
Check valve body for damage, replace
valve body if necessary
Check installation of valve body in piping
Use the product regularly
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