Common applications
WELLS LIFTING STATIONS
BOOSTER SETS WELLS & TANKS CONTROL
1 PROBE
2 PROBES
WITHOUT PROBES
0-120’ 0-120’
Wires must be isolated. The maximum length for probes wiring is 200 m and the minimum section is 0,5 mm².
A CORRECT GROUND CONNECTION is essential for the effective operation of the level control. It is recom-
mended to connect the ground wire to any point of the pipe. A third probe submerged at the bottom of the recipient is
required if the tank is insulated (concrete ber, glass ber and plastics in general).
During the re-start time the unit waits the recovery of the water level. The amber pilot light will ash.
If you don’t want to wait the re-start time, move the operation selector to the position “0” and then to the position
“AUTO”.
In order to cancel the automatic re-start of the pump, adjust the knob to the minimum, selecting the value “0” (manual
re-start).
WITHOUT PROBES Mode: If, while re-starting the pump after a st stop for underload, the minimum intensity adjus-
ted is not reached yet, the unit will stop the pump and it will not carry out any further re-start.
In case of phase failure, the UNDERLOAD ALARM LED or the OVERLOAD ALARM LED might light up, depending
on which phase is missing. Then the unit will stop the pump and it will not carry out any further re-start.
Furthermore, if the motor starts during the phase failure, the unit will not wait the initial inhibition time of 20 seconds
(planned for the lling of the pipes).
Phase failure
Level probes
Re-start time
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