Troubleshooting - Gemü Rsk Betriebsanleitung

13 Troubleshooting

Malfunctions and defects may occur during operation. The following table shows the possible causes and the appropriate solu-
tion to these. In the case of malfunctions/defects that are not listed or that are unclear, contact GEMÜ.
Error
Excessive noise
No flow present
Leakage rate too high
Leakage at flange
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Possible cause
Settling section too small/not complied
with
Flow rate too low
Valve and flange not optimally adapted to
each other
Valve installed wrong way round
Pressure too low
Valve too heavy
Closing spring too strong
O-ring damaged
Valve deformed
Sealing surface damaged
Sealing surface contaminated
Wear
Closing spring worn/defective
Flange not sufficiently tightened
Sealing surface/seal damaged
Sealing surface/seal contaminated
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13 Troubleshooting
Troubleshooting
Install valve in a suitable position
Select smaller nominal size
Adapt the valve and flange to each other
or replace
Align flow direction arrow with flow direc-
tion
Increase pressure and/or flow rate
Use different valve material
Use the appropriate valve for the piping
Change the installation position from ver-
tical to horizontal
Use a weaker closing spring
Replace O-ring
Replace valve
Rework sealing surface, replace housing
if applicable
Clean sealing surface
Replace affected components
Replace closing spring
Check connector elements and retighten
if necessary
Rework sealing surface, replace housing
if necessary
Clean sealing surface/seal
GEMÜ RSK