FRANCO srl Manual of use and maintenance ROOF COOLER
20
5.2 Wiring
All the wires used must be suitable to carry the current intensity (A) of the motor (par. 5.1).
The
terminal’s screws must be accurately tightened.
Make sure that the electricity supply characteristics are exactly as shown in the table (par. 5.1).
Install a differential magnetic switch upstream of the device.
Protect with a suitable motor overload protection (par 5.1).
Make sure all connections are stuck on the box, the box cover is secured and that the screws
are tightened to ensure the necessary level of protection.
The unit is provided with male connectors IP68. They are prewired on the cables of the drainer, he pump and
the ventilator.
They are provided with female connectors, for the water supply connection (usually they are joined to the male
connector inside the unit.
Enter the power supply cables through the cable gland plate.
The connectors’ pins have a number. Connect the power supply wires, as it is shown in the table below.
LEVEL SENSOR
A level sensor is available upon request, a reed contact with the following
characteristics:
Max switching voltage: 100Vdc
Max switching current: 0,5A.
It is advised to use a maximum voltage of 24V to connect the contact
with a relay or with a signaling or supervising system.
The contact closes when water level is optimal for machine operations
(float high). It opens when the water level is low or the filling float is not
correctly calibrated.
THREE PHASE VERSION
PIN
VENTILATOR
PUMP
DRAIN
1
U
– LINE
LINE
LINE
2
V
– LINE
NOT CONNECTED
NOT CONNECTED
3
W
– LINE
NEUTRAL
NEUTRAL
4
EARTH GROUND
EARTH GROUND
NOT CONNECTED
SINGLE PHASE VERSION
PIN
VENTILATOR
PUMP
DRAIN
1
LINE
LINE
LINE
2
NOT CONNECTED
NOT CONNECTED
NOT CONNECTED
3
NEUTRAL
NEUTRAL
NEUTRAL
4
EARTH GROUND
EARTH GROUND
NOT CONNECTED
WITHOUT VENTILATOR VERSION
PIN
PUMP
DRAIN
1
LINE
LINE
2
NOT CONNECTED
NOT CONNECTED
3
NEUTRAL
NEUTRAL
4
EARTH GROUND
NOT CONNECTED
