Cleaning; Connecting The Unit; Electric Connection - Zanotti DBO 235 Use And Maintenance Instructions

WARNING
Above devices have been developed to safeguard the operator's safety.

6.9 Cleaning

Clean the unit carefully. Remove any dust, foreign substances and dirt possibly deposited during
handling. Use detergents and degreasers.
ATTENTION
Solvents are not allowed.
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.
When choosing the protective device take the following into consideration: should the
current
at installation point be higher than 10 KA, install a limiting device which reduces its peak value to 17 KA.
Prospective short-circuit current (Ik)
provided that no protective device against overcurrent has been installed on the circuit.
Peak value:
max value of prospective short-circuit current
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.
: current which would flow in case of failure due to negligible impedance,
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
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.
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
prospective short-circuit
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