Connecting The Unit; Electric Connection - Zanotti SB Serie Manual De Uso

7.

CONNECTING THE UNIT

ATTENTION
Before connecting the unit make sure that mains voltage and frequency
correspond to the values shown in the data plate. Voltage tolerance: +/- 10% compared to
nominal value.
7.1

Electric connection

Connect the unit after checking the panel components.
ATTENTION
Connection to the electric line shall be effected applying a suitable safety device (a circuit
breaker or a ground fault interrupter) selected by the installer on the basis of the line
involved and of the absorption indicated on the unit plate.
If a cold room includes more units, each unit shall be provided with its own safety device.
Connect the unit paying attention to the colours of the supply cable wires:
We advise to install a microswitch (not supplied) on the cold room door which will
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The necessary cable is available with the unit. Connect it keeping in mind the following:
microswitch closed = door closed.
ATTENTION
Above microswitch is not supplied with the unit. If the microdoor cable is disconnected or
damaged, the same conditions will occur as in case of open door and connected microdoor.
"B" RANGE units (B = low temperature) are supplied with a cable for door heater connection, to be made using a
fuse suitable for the door heater used.
The unit is also equipped with a cable for cold room lamp connection (lamp voltage should be 230 V and lamp max
capacity 100 Watts).
ATTENTION
Do not connect microdoor, cold room light or door heater cables to the 230V line. Each
cable is equipped with a plate showing how it should be connected.
WARNING
Any defective electrical part should be replaced by trained personnel exclusively.
The electric connection should be effected by qualified personnel.
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a) 230V/1/50-60Hz
b) 230V/3/50-60Hz
c) 400/3/50 Hz
switch on the light in the cold room, stop the unit and
override the temperature alarm (for about one hour after
door closing) every time the door is opened.
3 wires
Blue = Neutral
Yellow/Green = Ground
Brown = Phase
4 wires Grey = Phase
Yellow/Green = Ground
Brown = Phase
Black = Phase
5 wires Blue = Neutral
Yellow/Green = Ground
Brown = Phase
Black = Phase
Grey = Phase