KNF Laboport N86 KN.18 Mode D'emploi page 44

Operation
16 Translation of original Operating Instructions, English, KNF 121435-121438 04/18
Automatic starting can cause personal injury and
pump damage
When the operation of the pump is interrupted by the
thermal switch, the pump will restart automatically
WARNING
after cooling down.
 After triggering of the thermal protection or in the
event of power failure, remove the pump's mains
plug from the socket so that the pump cannot
start uncontrollably.
 Attempt work on the pump only if the pump is
separated from mains power.
7.3. Switching pump on and off
Switching pump on
The pump may not start up against pressure or vacuum during
switch-on. This also applies in operation following a brief power
failure. If a pump starts against pressure or vacuum, it may
block. This activates the thermal switch, and the pump
switches off.
 Make sure that no vacuum or pressure is present in the lines
during switch-on.
 Switch on pump with mains switch (see fig. 2 and 3, depending
on pump type)
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 8.2.1).
 Switch off pump with mains switch (see fig. 2 and 3, depending
on pump type).
 Open pressure and suction lines to normal atmospheric pres-
sure.
 Disconnect the power source.
Mini Laboratory pumps N 86.18, N 811.18