GF 582 High Purity, Instruction Manual

Page: 50 / 104

Instruction manual Troubleshooting
50
12 Troubleshooting
Fault Possible cause Troubleshooting
Leak at pipe Leaking connections Check bonding or welding
and repair, if necessary
Check gaskets and
replace, if necessary
Leak between top part and
base part Retaining ring not
correctly inserted Position the retaining ring
so both projections of the
retaining ring lie in the
notches of the base part
Bonnet assembly (top
part) loose Retighten bonnet
assembly (top part)
Leak at bonnet assembly
(top part) Piston screw loose Retighten piston screw
Diaphragm damaged Replace diaphragm, see
Chapter 11
Control element
(diaphragm, piston,
sealing element) defective Replace cartridge.
Inertia too high, setpoint
value not reached Valve undersized Check valve dimensioning
(k
vs
value)
Valve does not react to
compressed air Valve is not dimensioned
for compressed air, and
therefore has no
compressed air
connection Remove compressed air
and select other valve
(e.g. pneumatic diaphragm
valve) for the application