To operate the pump, after making the electrical connection, position the rotation inverter at position 1 in the
desired flow direction. The pump will start running. When the delivery circuit is closed (usually with a tap or
dispensing gun), the pump will continue to run for a few moments until the set pressure is reached.
CAUTION:
When first used, open the valve located above the buffer tank to allow all the air in the circuit to
escape and avoid foam problems
.
When the circuit is reopened, for a few moments the liquid flows out due to the
push of the internal pressure and then the pump is activated.
The two adjustment screws located inside the pressure switch allow to establish the stop and restart time of the
pump.
CAUTION:
for models equipped with an electric variator, a connection is provided between the pressure switch
and the control panel. The power supply on these models is always supplied to the general panel and not to the
pressure switch. On the general panel there is an AUTOMATIC / MANUAL selector to select operation with the
pressure switch or in manual mode.
MAKE THE ADJUSTMENTS IN THE FOLLOWING ORDER:
1)
INSERTION:
To increase the insertion point when the pressure decreases, screw the calibration nut
(1)
2)
DISINSERTION:
To increase the operating point when the pressure increases, screw the differential
adjustment nut (2)
CONTROL PANEL WITH FLOW SWITCH: ("Dry Stop")
This is an accessory available on all three-phase models (except EURO 20) and on all versions with electronic
variator (both single-phase and three-phase). The pump is supplied with a special stainless steel fitting on which
the flow sensor is installed. The fitting must be installed on the delivery pipe of the product, making sure that the
turn signal on the sensor corresponds to the direction of the product. In the absence of liquid, the sensor stops the
pump. To activate the pump on the control panel, in addition to a manual / automatic selector, there is a BY PASS
button. In case of automatic operation, it must be pressed to allow the pump to start and fill the pipes, temporarily
interrupting the flow switch sensor control. Once the pipes are filled, the button must be released and the pump
will continue to work, stopping in the absence of the liquid.
