Troubleshooting; Faults Without A Fault Message - ProMinent Sigma2 S2Cb Operating Instructions Manual

Troubleshooting

14 Troubleshooting
Safety information
14.1

Faults without a fault message

Fault description
Pump does not prime in
spite of full stroke motion
and bleeding.
78
Cause
Minor crystalline deposits
on the ball seat due to the
valves drying out.
WARNING!
Fire hazard with flammable media
Only with flammable media: They can be ignited by
oxygen.
– The pump may not work if there is a mixture of feed
chemical with oxygen in the liquid end. A specialist
may need to take appropriate actions (using inert
gas, ...).
WARNING!
Danger of an electric shock
Personnel working on electrical parts can be electro‐
cuted if all electrical lines carrying current have not been
disconnected.
– Disconnect the supply cable before working on the
motor and prevent it from being reconnected acci‐
dentally.
– Any separately driven fans, servo motors, speed
controllers or diaphragm rupture sensors fitted
should also be disconnected.
– Check that the supply cables are de-energised.
WARNING!
Warning of hazardous feed chemical
Should a dangerous feed chemical be used: it may
escape from the hydraulic components when working on
the pump, material failure or incorrect handling of the
pump.
– Take appropriate protective measures before
working on the pump (e.g. safety glasses, safety
gloves, ...). Adhere to the material safety data sheet
for the feed chemical.
– Drain and flush the liquid end before working on the
pump.
CAUTION!
Warning of feed chemical spraying around
Feed chemical can spray out of the hydraulic compo‐
nents if they are manipulated or opened due to pressure
in the liquid end and adjacent parts of the system.
– Disconnect the pump from the mains power supply
and ensure that it cannot be switched on again by
unauthorised persons.
– Depressurise the system before commencing any
work on hydraulic parts.
Remedy
Take the suction hose out of the storage
tank and thoroughly flush out the liquid end.
Personnel
Technical per‐
sonnel