14
Troubleshooting
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.
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, ...).
CAUTION!
Warning of feed chemical spraying around
Feed chemical may spray out of the hydraulic com‐
ponents if they are tampered with 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.
– Ensure that the system is at atmospheric pres‐
sure before commencing any work on hydraulic
parts of the system.
WARNING!
Feed chemical can be physiologically contami‐
nated
Only with the FDA version:
Non-FDA-certified parts will also become wetted in
the event of a diaphragm rupture.
– Take this into account if necessary.
14.1 Faults without error message
Fault description
Cause
Remedy
Personnel
Pump does not prime
despite full stroke motion
and degassing.
Minor crystalline deposits
on the ball seat due to the
valves drying out.
Take the suction hose out of the
supply tank and thoroughly flush
out the liquid end.
Technical per‐
sonnel
Safety information
Troubleshooting
51
