Troubleshooting; Faults Without A Fault Message - ProMinent DULCO flex Control-DFYa Operating Instructions Manual

16

Troubleshooting

Safety information
16.1

Faults without a fault message

Faults without a fault message
Error
The temperature of the pump is
raised.
The flow or pressure is reduced.
User qualifications - see following table and
on page 14
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 may spray out of the hydraulic compo‐
nents if they are tampered with or opened due to pres‐
sure 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 pressure
before commencing any work on hydraulic parts of
the system.
Only trained personnel may rectify this error!
Possible cause
The pump hose is ungreased.
The temperature of the feed chemical
is raised.
The suction conditions are inadequate
or poor.
The speed of the pump is too high.
The valves on the discharge and or
suction side are completely or partially
closed.
The pump hose is insufficiently com‐
pressed.
The pump hose is ruptured (feed
chemical is escaping from the hose
into the liquid end).
The suction line is partially blocked.
The storage tank is empty.
Troubleshooting
Ä 'Qualification of personnel'
Remedy
Grease the pump hose.
Lower the temperature of the feed
chemical.
Check the suction line for blockages.
Lower the speed of the pump.
Open the valves.
Check the number of spacer plates.
Check the roller fastening.
Replace the pump hose and clean the
pump.
Clean the suction line.
Fill or replace the storage tank.
81