Operating instructions

11 Repairs
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 components 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 unauthor‐
ised persons.
– Depressurise the system before commencing any work
on hydraulic parts.
WARNING!
Warning of hazardous or unknown feed chemical
Should a hazardous or unknown feed chemical be used, it
may escape from the hydraulic components when working
on the pump.
– Take appropriate protective measures before working on
the pump (protective eyewear, protective gloves, ...).
Read the safety data sheet on the feed chemical.
– Drain and flush the liquid end before working on the
pump.
11.1 Cleaning valves
Unsuitable spare parts for the valves may lead to problems
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 part kits. In case of doubt, refer to
the exploded views and ordering information contained
in the "Supplementary information CD for ProMinent
®
pump operating instructions".
Personnel:
n
Technical personnel
CAUTION!
Warning of personal injury and material damage
Feed chemical may escape from the liquid end, for example,
if ball valves not repaired correctly.
– Only use new components which fit your valve - both in
terms of shape and chemical resistance!
– Pay attention to the flow direction of the discharge and
suction connectors when fitting the valve.
Safety information
Repairing ball valves
Repairs
55