22
6.8
8
Cleaning
Clean the unit carefully. Remove any dust, foreign substances and dirt possibly deposited during handling.
Use detergents and degreasers.
ATTENTION
Solvents are not allow ed.
7
Connecting the unit
ATTENTION
Before connecting the unit make sure that mains voltage and frequency correspond to
the values show n in the data plate. Voltage tolerance: +/ - 10 % compared to nominal
value.
7.1
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:
a) 230V/1/50-60Hz
3 wires
Blue = Neutral
Yellow/Green = Ground
Brown = Phase
b) 230V/3/50-60Hz
4 wires
Grey = Phase
Yellow/Green = Ground
Brown = Phase
Black = Phase
c) 400/3/50 Hz
5 wires
Blue = Neutral
Yellow/Green = Ground
Brown = Phase
Black = Phase
Grey = Phase
We advise to install a microswitch (not supplied) on the cold room door which will:
·
switch on the light in the cold room, stop compressor and evaporator fan
·
override the temperature alarm (for about one hour after door closing)
every time the door is opened.
Should microdoor, cold room light, door heater be necessary, carry out following connections:
Microdoor
Remove the jumper between terminals ID3 of the electronic control box and connect the microdoor
cable according to the following condition: closed contact with closed door.
Cold room light
Connect as shown in the wiring diagram. Cold room lamp features: 230 Volt and 100 Watt max.
Door heater
Connect as indicated by the plate on terminal board. Heater is indicated by "EP". Output voltage: 230
Volt.
WARNING
Any defective electrical part should be replaced by trained personnel exclusively. The
electric connection should be effected by qualified personnel.
