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N 810/820/840.18 EX
Operation
Translation of original Operating Instructions, English, KNF 309515-309518 06/17
25
8.2. Switching Pump on and off
Switching pump on
The pump may not start up against overpressure during
switch-on. This also applies in operation following a brief power
failure. If a pump starts against pressure, it may block. This
activates the thermal switch, and the pump switches off.
Make sure that no pressure is present in the lines during
switch-on.
Switch on pump with mains switch (see Fig. 3/
5
)
Switching off the pump/removing from operation
When transferring aggressive media, flush the pump prior to
switch-off to increase the service life of the diaphragm (see
chapter 9.2.1, page 26).
Switch off pump with mains switch (see Fig. 3/
5
).
Open pressure and suction lines to normal atmospheric pres-
sure.
Disconnect the power source.