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.
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.
Third-party spare parts for the pumps can lead to problems when
pumping.
n Only use original spare parts.
n 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 and suction valve are tightly fitted.
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 connections are intact.
n Check the integrity of the housing.
n Check that the dosing head screws are tight.
Technical personnel
* with normal loading (approx. 30% of continuous operation).
With heavy-duty loading (e.g. continuous operation): Shorter inter‐
vals.
Standard liquid ends:
Maintenance
98
DosingPump.ir
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