3.696.5275.210
27
Symptom
Cause
Remedy
Tank Temperature is too low. Plant Steam is not reaching
the PAV.
Check that plant steam
supply is not isolated.
Steam inlet PAV is not open.
Check that air supply
pressure is correct.
Check that PAV solenoid
valve is energised.
Operate manual override on
solenoid valve to check
operation of valve.
Manually operate valve via
tank synoptic screen on
controller.
Water temperature
transducer is damaged and
giving a false reading.
Replace level transducer.
Contact Spirax Sarco Service
Department.
Tank Temperature is too
high.
Plant steam PAV has failed
to close.
Isolate plant steam supply
and inspect valve seat for
damage (see appropriate
instruction manual).
Steam supply pressure
exceeds maximum
differential pressure of valve.
Check plant steam supply
pressure.
Water temperature
transducer is damaged and
giving false reading.
Replace temperature
transducer.
Contact Spirax Sarco Service
Department.
Generator Water Level is too
low.
Generator is in alarm
condition.
Feed water transfer pump is
not running.
Check that pump control
isolator is in the run position
(RTK1).
Check pump overloads.
Check motor windings (see
appropriate instruction
manual).
Replace pump. See page 41
of this manual.
Pump is running but develops
no pressure.
Bleed pump. Follow
procedure in instruction
manual.
Adjust spill back line throttling
valve so that sufficient
pressure is developed.
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