MODELS WITH MECHANICAL SPEED VARIATOR:
This type of pump is available only with THREE-PHASE motorization, and has a separate control panel installed
on the trolley. For the operation of the panel, see paragraph "Three-phase coaxial models with separate panel".
Attached to this manual there is a specific section dedicated to the operation of this type of pumps.
MODELS WITH ELECTRONIC SPEED VARIATOR:
See specific paragraph at the end of the manual.
In addition to the above models, the pumps can have the following special control panels:
1)
CONTROL PANEL WITH AUTOMATIC PRESSURE SWITCH:
Available on all three-phase models (except for the EURO 20 pump) and on models with electronic variator (both
three-phase and single-phase).
The pump is equipped with a special fitting consisting of a non-return valve, buffer tank (in some cases it is not
supplied) and a pressure switch panel. This fitting is installed on the pump in the liquid delivery direction (check
the direction of the turn signal indicated on the non-return valve, which must coincide with the liquid direction).
The power supply is given by the pressure switch panel, which in turn is connected to the mains. Inside the
pressure switch panel there are the adjustment screws to set the pressure for insertion and disconnection of the
pressure switch circuit.
