Samson 46-7, Инструкция по монтажу и эксплуатации

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EB 3131-1 EN 31
Malfunctions
Table 6: Troubleshooting
Malfunction Possible reasons Recommended action
Flow rate or differential
pressure exceeds
adjusted set point
Leak between seat and plug
Remove valve from the pipeline
and clean seat and plug. Replace
the plug, if necessary. If this is not
possible, return regulator to
SAMSON for repair.
Defective operating diaphragm
Replace diaphragm or return regu -
lator to SAMSON for repair.
Control line with needle valve
blocked.
Remove control line and needle
valve. Clean them.
Valve too large for control task (flow
rate) or too small (differential pres-
sure)
Recalculate K
VS
and contact
SAMSON for further action.
Flow or differential
pressure set point not
reached
Incorrect set point range selected.
Check set point range and contact
SAMSON for further action.
Safety device, e.g. pressure limiter,
has been triggered.
Check plant. Unlock safety device.
Plant differential pressure too low.
Compare differential pressure in
the plant with the plant’s drag.
Strainer blocked
Drain and clean filter of the strain -
er.
Incorrectly installed valve (direction
of flow).
Install the valve in such a way that
the flow of direction corresponds
with the direction indicated by the
arrow on the valve body.
Pressure exceeds the
pressure set point.
Leak between seat and restriction or
restriction is blocked.
Remove valve from the pipeline
and clean seat and restriction.
Replace the restriction, if
necessary. If this is not possible,
return regulator to SAMSON for
repair.
Control loop hunts. Valve too large for control task
Recalculate K
VS
and contact
SAMSON for further action.
Contact SAMSON's After-sales Service for malfunctions not listed in the table and when the
malfunction cannot be remedied as described.
Note