9 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 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.
– Depressurise the system prior to undertaking any
maintenance or repair work!
Interval Maintenance task Personnel
Quarterly* n Check the diaphragm for damage
- refer to "Repair"
n Check the leakage hole for escaping feed chemical
n Check that the dosing lines are fixed firmly to the liquid end
n Check that the suction valve and discharge valve are tight
n Check the tightness of the entire liquid end - particularly around the
leakage hole Fig.
11!
n Check that the flow is correct: Allow the pump to prime briefly - turn
the multifunctional switch briefly to "Test"
n Check that the electrical connections are intact
n Check that the dosing head screws are tight
Technical personnel
* under normal loading (approx. 30 % of continuous operation)
Under heavy loading
(e.g. continuous operation): Shorter intervals.
Fig. 11: Leakage hole
Standard liquid ends:
Maintenance
28
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