Operation
Diaphragm pump N820.18 CN / N840.18 CN
26
Translation of Original Operating Instruction, KNF 317428-338560 06/22
9 Operation
9.1 Information on switching the pump on and
off
Switching on the pump
Fig.4: Switching the pump on and off with power switch
The pump must not be started up against operating pres-
sure during switch-on. This also applies during operation
after a brief power failure. If a pump starts up against
pressure, the pump may block, thereby activating block-
ing protection (drive) and switching off the pump.
Fig.5: Switching the pump on and off with rotary/push knob
à
Ensure that no pressure is present in the lines when
switching on.
