Servicing
Diaphragm pump PJ25481-950.50.18
20
Translation of original Installation Instructions, english, KNF 125530-316634 06/18
8. Servicing
8.1. Servicing schedule
Component
Servicing interval
Pump
-
Regular inspection for external
damage or leaks
Hose connections
-
Regular inspection for external
damage or leaks
Diaphragm and valve
plates
-
Replace when pumping capacity
decreases, or sooner
Silencer
-
Change if it is dirty
Tab. 10
8.2. Cleaning
When cleaning, make sure that no liquids enter the inside of
the housing.
8.2.1. Flushing pump
Before switching off the pump, flush it with air (or with inert gas
if required for safety reasons) under atmospheric conditions
(ambient pressure) for about five minutes.
8.2.2. Cleaning pump
Pump disconnected from mains and de-energized.
WARNING
Dangerous substances in the pump can cause a
health hazard.
Depending on the substance transferred, caustic
burns or poisoning are possible.
Wear protective clothing if necessary, e.g. pro-
tective gloves.
Take the proper steps to clean the pump.
CAUTION
Danger of burns from hot pump parts
The pump head or motor may be hot even after the
pump has been shut off.
Allow the pump to cool off after operation.
Solvent should be used for cleaning only if the head materials
are not corroded (ensure compatibility of the material).
If compressed air is available, blow out the parts.
Requirements
