Diaphragm Vacuum Pumps N86.16
Servicing
Translation of original Operating and Installation Instructions, english, KNF121260-121531 04/20
19
9. Servicing
9.1. Servicing schedule
Component
Servicing interval
Pump
-
Periodic inspection for external
damage or leakage.
-
Periodic inspection for noticeable
changes to noises and vibrations
Diaphragm and valve
plates
-
Replace no later than if there is a
decrease in the pump flow rate.
-
Replace if the pressure or flow rate
of the pump changes without ap-
parent reason.
Tab. 9
9.2. Cleaning
When cleaning, make sure that no liquids enter the inside of
the housing.
9.2.1. Flushing pump
When transferring dangerous and environmentally hazardous me-
dia, KNF recommends flushing the pump at atmospheric pressure
for a few minutes prior to switch-off (if necessary for safety rea-
sons: with an inert gas) to extend the service life of the diaphragm.
Discharge the media safely.
9.2.2. Cleaning pump
CAUTION
Risk of burns from hot pump parts
The pump head or motor may still be hot after opera-
tion of the pump.
Allow pump to cool after operation.
WARNING
Health hazard due to dangerous substances
in the pump
Depending on the medium being transferred, caustic
burns or poisoning is possible.
Wear protective equipment if necessary, e.g.
protective gloves, googles.
Clean pump with suitable measures.
Solvents should only be used during cleaning if head materials
are not affected (ensure resistance of the material).
If compressed air is available, blow out parts.
