Maintenance And Functional Faults; Maintenance; Rectifying Functional Faults - ProMinent Sigma 1 Supplementary Operating Instructions

7

Maintenance and functional faults

7.1 Maintenance

Tab. 2: Maintenance intervals
Maintenance interval
Regularly *
Regularly *
Regularly *
Regularly *
If damaged or worn:
If the pump is leaking at a
valve:
Annually *
Every 2 years *
* adapted to your process conditions and process requirements.

7.2 Rectifying functional faults

Fault description
The diaphragm rupture
sensor has triggered.
The pump is leaking at
a valve.
Maintenance work
Rinse the interior of the liquid end, see
metering pumps with hygienic pump head' on page 14 .
Disconnect the supply voltage and flush the exterior surfaces of the pump
with a surge of water at atmospheric pressure.
Check the surfaces and seals for scratches and deposits, see .
Check the seals of the hygienic valve and replace them if in doubt, referring
to the appropriate chapter "Spare parts lists" and .
The O-rings can age faster than usual when exposed to high thermal loads.
In extreme cases, particles can enter the feed chemical, which can be
avoided by the prompt replacement of the O-rings.
Immediately replace the relevant components of the hygienic valve, refer‐
ring to the appropriate chapter "Spare parts lists" and .
Immediately replace the relevant components of the hygienic valve, refer‐
ring to the appropriate chapter "Spare parts lists" and .
Replace the O-rings, the valve balls and the multi-layer diaphragm, referring
to the appropriate chapter "Spare parts lists" and .
Replace the valve seats.
Replace the valve seats, referring to the relevant chapter "Spare parts lists"
and .
When maintaining the pump or components of pumps, make sure
that there is no, or could be no, hygienic risk to the process. If in
doubt, clean the pump,
pumps with hygienic pump head' on page 14 .
Cause Remedy
The diaphragm is Replace the diaphragm as quickly as pos‐
ruptured.
sible, see
diaphragm' on page 22 .
An O-ring is dam‐ Replace the O-ring as quickly as possible,
aged.
see
valves' on page 19 .
Maintenance and functional faults
Ä Chapter 8 'Notes on cleaning
Ä Chapter 8 'Notes on cleaning metering
Ä Chapter 9.1 'Replacing the
Ä Chapter 8.5 'Manually cleaning the
Personnel
Technical per‐
sonnel
Technical per‐
sonnel
13