en
– Original instructions
20
4.3.5 Protection against dry running
The standard control panel can be connected to a common float for the open tanks, or to a
minimum pressure pressure switch on the suction side (recommended value: 0.2-0.4 bar). When
the minimum pressure conditions are restored, the pump units start automatically. If the dry
running protection is considered to be superfluous, do not remove the jumper on the terminal in
the control panel. The correct numbers of the terminals are given in the connection diagram that
can be found in the control panel.
NOTICE:
The booster set is supplied with the jumper installed and, therefore, without the dry running
protection enabled.
The optional electronic level control kit permits control with electrode probes.
Install the three probes supplied with the kit in the collection tank and connect them to the
terminals in the control panel.
The correct numbers of the terminals are given in the wiring diagram that can be found in the
panel:
Max probe (A) determines the level at which to activate the booster set during filling of the
collection tank.
Min probe (B) determines the level at which to deactivate the booster set.
Probe (C) must be at a level below that of the Min probe (B).
Summary of Contents for LOWARA SMB /HME Series
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