Setting The Level-Dependent Control - KSB MSE Operating Manual

Setting the switching
points
Routing the float switch
cable
14 of 24
5 Installation at Site

5.4.1 Setting the level-dependent control

CAUTION
Obstructed float switch
Flooding caused by pump not stopping!
Dry running caused by pump not stopping!
▷ The float switch must be fitted in such a way that it is able to move freely.
▷ The pump must be started up before the fluid handled reaches the upper edge
of the tank.
▷ The pump must be stopped before the fluid handled drops down to the suction
openings.
The pump is started and stopped by a float switch or level sensor. The float switch
closes the circuit in upper float position.
▪ When the fluid handled reaches the start-up level or the float switch reaches an
upper angular position of 30°, the pump starts up.
▪ When the fluid handled reaches the stop level or the float switch reaches a lower
angular position of 30°, the pump stops.
▪ The switching points are indicated by a clearly audible switching noise in the
float housing.
▪ The switching points must be at least 40 cm apart.
ü The switching level is set at the site.
1. Determine the fastening height of the float switch cable at the discharge line,
handle or other suitable points.
2. Observe the required free cable length of the float switch.
3. The minimum free float switch cable length measured from the antikink bush is
10 cm.
4. Fasten the float switch cable with suitable fasteners.
MSE/MSD