13 Carrying out repairs
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, ...).
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.
– Disconnect the pump from the mains power supply
and ensure that it cannot be switched on again by
unauthorised persons.
–
Depressurise the system before commencing any
work on hydraulic parts.
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.
13.1 Cleaning valves
Unsuitable spare parts for the valves may lead to prob‐
lems for the pumps.
–
Only use new components that are especially
adapted to fit your valve (both in terms of shape and
chemical resistance).
–
Use the correct spare parts kits. In the event of
doubt, refer to the exploded views and ordering
information in the appendix.
Safety information
Carrying out repairs
71
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