WITHOUT PROBES
A correct minimum current ad-
justment is essential. (see section
“CURRENT ADJUSTMENTS”)
When the level approaches the
pump intake, the effort done by the
pump decreases. The unit uses the
motor as sensor: when this one de-
creases the effort, the intensity con-
sumed decreases. This detection will
stop the pump after a time delay of
4 s., during these seconds the alarm
pilot will fl ash.
The pump will automatically start
after a pre-defi ned time of 15 minu-
tes (during this period the low level
led will fl ash). If we press the RESET
button, the time delay will be cance-
lled and the pump will start.
If in less than a minute of opera-
tion, the unit stops again the pump,
the underload alarm will trip due to
motor failure (red led fl ashing). It will
be necessary to press RESET to re-
start the unit.
The REMOTE control terminal blocks, “3” y
“4, can be used to start and stop the pump from
an external device. If the level led is off (co-
rrect level), when we close a contact connec-
ted to this input (fl oat switch, pressure switch,
time switch, radio remote control, switch etc)
the pump will start and if we open it the pump
will stop. We can also apply a voltage to this
input from 6 to 400V~/V= (irrigation controller,
presscontrol, etc) to start the pump or remove
it to stop the pump.
The contact will be
closed when the pump
stops due to thermal
failure.
REMOTE (Only automatic mode)
Alarm output
(terminals 5 y 6)
If the pump is in automatic mode, the unit
will activate the motor during 1 second every
23 hours of inactivity, preventing the jam-
ming and the deterioration due to long rest
periods.
Pumps anti-jamming
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