Repair; Replacing Metering Diaphragm - ProMinent EXtronic EXBb Operating Instructions Manual

Repair

12 Repair
Safety information
12.1

Replacing metering diaphragm

40
WARNING!
Danger of electric shock
Unauthorised repairs inside the pump can result in
an electric shock or loss of explosion protection.
For this reason repairs inside the pump should
only be carried out by a ProMinent branch office or
representative, in particular the following:
– Replacement of damaged mains connection
lines
– Replacement of fuses
– Replacement of electronic controller
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!
Contact with the feed chemical
Parts that come into contact with the feed chemical
are exposed and touched during repair work.
– Protect yourself against the feed chemical if it
is hazardous. Read the safety data sheet on
the feed chemical.
CAUTION!
Warning of feed chemical spraying around
Feed chemical can spray out of the hydraulic com‐
ponents 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.
Repairs that may be carried out by qualified technical personnel, in
accordance with the operating instructions:
Cleaning valves
n
Replacing the diaphragm
n
All other repairs: Contact the responsible ProMinent branch!
1. Flush the liquid end when using hazardous media:
To do this, push water or an appropriate medium through the
liquid end's suction connector.