Samson 3510-1, Монтаж и эксплуатация

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5 Troubleshooting
If the valve leaks, the packing may be defec-
tive or, in the bellows version, the metal bel-
lows may be defective.
Tight shut-off of the valve can also be im-
paired by impurities or other foreign par-
ticles between seat and plug, or by dam-
aged seat joints.
Remove the affected components, clean
them thoroughly and, if necessary, replace
them.
Caution!
Make sure to relieve the pressure
from the pressurized part of the
plant and, depending on the me-
dium, drain it completely before per-
forming maintenance. For high tem-
peratures, allow the plant to cool
down to ambient temperature.
Disconnect and lshut off the supply
air as well as the control signals to
prevent against danger posed by
moving parts at the valve.
As valves are not free of dead ca-
vities, remember that there might still
be residual media in the valve. This
particularly applies for valve version
with bellows seal or insulating sec-
tion.
It is recommended to remove the
valve from the pipeline for mainten-
ance.
Note!
The seat and special tools required for in-
stallation as well as the appropriate tighte-
ning torques are to be found in the
SAM-
SON Special tools brochure WA 029 .
A complete tool kit
for the Type 3510
Micro-flow Valve can be ordered separately
(order no. 1280-3050).
EB 8091 EN
9
Troubleshooting