Servicing - KNF NF 10 DC series Operating Instructions Manual

Diaphragm–Liquid pump NF 10
Information on procedure
Prior requirements
KNF Flodos AG BA_NF10_EN_05_069219
Operating and Installation Manual
8.

Servicing

8.1. Servicing schedule
Component
Pump
Pump head
Diaphragm and valves
Tab. 14
8.2. Cleaning
WARNUNG
8.2.1. Flushing the pump
 When pumping aggressive media, KNF recommends flushing
the pump with a neutral fluid under atmospheric conditions for
a few minutes before switching off, to extend the service life of
valves and diaphragm.
8.2.2. Cleaning the pump
 Wipe the outside of the pump with a soft dry cloth. Ensure that
any cleaning solvents used will not damage the materials of
the pump head and crankcase housing (check material
resistance properties).
 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.
▪
It is recommended to replace the diaphragm when the
head parts are removed.
Tools
Qty. Tool
1 Screwdriver TORX T6
Tab. 15
Servicing interval
- Regular inspection for external
damage or leaks
- Clean the pump internally: if the
flow rate changes, the pump does
not pump or no vacuum is created
(section 8.2)
- At the latest change when the flow
drops off
Health hazard due to dangerous substances
in the pump!
Depending on the substance transferred, caustic
burns or poisoning are possible
 Wear protective clothing if necessary, e.g. pro-
tective gloves.
 Rinse the pump with a neutral liquid and pump
empty.
Servicing
18