13 Maintenance
WARNING!
It is mandatory that you read the safety information
and specifications in the "Storage, Transport and
Unpacking" chapter prior to shipping the pump.
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.
Third-party spare parts for the pumps may result in
problems when pumping.
–
Only use original spare parts.
–
Use the correct spare parts kits. In the event of
doubt, refer to the exploded views and ordering
information in the appendix.
Interval Maintenance work Personnel
Quarterly*
n Check that the hydraulic lines are fixed firmly to the liquid end.
n Check that the discharge valve and suction valve are fitted
tightly.
n Check that the entire liquid end is leak-tight - particularly around
the leakage hole - refer to
Fig. 39.
n Check that the flow is correct: Press
[Priming]
to allow the
pump to prime briefly.
n Check that the electrical connectors are intact.
n Check the integrity of the housing.
n Check that the dosing head screws are tight.
Technical personnel
* Under normal loading (approx. 30% of continuous operation).
Under heavy-duty loading (e.g. continuous operation): Shorter
intervals.
Standard liquid ends:
Maintenance
99
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