Electric Connection; Electric Controls; Control Panel - Zanotti CU Serie Manual De Uso

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.
ATTENTION: ONLY FOR CU Inverter
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.
Circuit breaker with Id=30 mA can cause not required intervention. It can be use circuit
breakers with Id=300, B type or circuit breaker with Id and time adjustable
If a cold room includes more units, each unit shall be provided with its own safety device.
WARNING
Any defective electrical part should be replaced by trained personnel exclusively.
The electric connection should be effected by qualified personnel.

8 Electric controls

8.1 Control panel

The CU units are equipped with different control panels according to model and operating functions.
The CU I units are equipped the underwriter electronic control
Connect the unit paying attention to the colours of the supply cable wires:
a) 230V/1/50-60Hz
b) 230V/3/50-60Hz
c) 400/3/50 Hz
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
Grey = Phase
Black = Phase
24