Diaphragm liquid pump NF 300
Servicing
KNF Flodos BA_NF300_EN_08_068697.docx
Translated from the Original Operating and Installation Instructions
20
8. Servicing
8.1. Servicing schedule
Component
Servicing interval
Pump
-
Regular inspection for external
damage or leaks
Pump head
-
Clean if the flow rate decreases, the
pump does not work or no vacuum
is created (Section 8.2)
Diaphragm, valve
plates and seals
-
Change as soon as pumping capac-
ity decreases, preferably sooner
Tab. 15
8.2. Cleaning
WARNING
Health hazard due to dangerous substances in the
pump!
Depending on the substance transferred, risk of
caustic burns or poisoning.
➔
Wear protective clothing if necessary, e.g. pro-
tective gloves.
➔
Rinse the pump with a neutral liquid and pump
empty.
8.2.1. Flushing the pump
➔
If pumping aggressive media, KNF recommends flushing the
pump with air under atmospheric conditions for several
minutes prior to switch off (if necessary for safety reasons: use
an inert gas). This will extend the service life of the diaphragm.
8.2.2. Cleaning the pump
➔
Where possible, wipe the components with a soft dry cloth. Do
not use cleaning solvents as these may corrode plastic parts.
➔
If there is compressed air available, blow off the separate
parts.
▪
Pump must be switched off and mains plug removed from
the socket.
▪
The pump must be free of any hazardous substances.
▪
Hoses must be disconnected from the pump head.
▪
We recommend replacing the diaphragm when the head
parts are removed.
Qty.
Tools for KP-, KP.51-, KT- and TT versions
1
Torx 20 screwdriver
Qty.
Tools for FT version
1
No.2 Phillips screwdriver for FT version
Tab. 16
Information on procedure
Prior requirements
Tools
