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13
GB
D
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b)
Connect the circuitry between the evaporator and the condenser using the seriali-
zed terminal boards which are in the electronic panel and inside the evaporator.
6.1 Cleaning the unit
Carefully clean the unit with detergents or degreasing substances, removing dust,
dirt and any foreign matter that may have deposited on it during transportation.
CAUTION!
Do not use solvents
6.2 Connecting the unit to external
6.2.1 Power mains connection
energy sources
Before making the electrical connection, ensure that the voltage and frequency of
the mains supply are as indicated on the unit’s serial plate and that the power
supply is /- 10% of nominal value.
Having conducted a preliminary inspection of the elements of the panel, make the
electrical connection. Connection to the mains supply must be made through a
magnetothermal differential switch.
Safety devices should be installed on the power supply line taking into account the
current absorption indicated on the plate.
When a cell contains more than one unit, each should be fitted with its own
magnetothermal differential switch.
Now connect the unit paying attention to the colour of the wires that make up the
power supply cable:
a)
110V-230V/1~/50-60 Hz
3 wires
Blue
=
neutral
Yellow/Green
=
earth
Brown
=
phase
b)
230V/3~/50-60 Hz
4 wires
Blue
=
phase
Yellow/green
=
earth
Brown
=
phase
Black
=
phase
c)
400V/3N~/50-60 Hz
5 wires
Blue
=
neutral
Yellow/Green
=
earth
Brown
=
phase
Black
= phase
Black
= phase
It is necessary to observe the exact phase sequence, as all machines are equip-
ped with an electronic control device, placed on the electric panel or in the com-
pressor junction box, which prevents the compressor from switching on if the
exact phase sequence is not observed.
We advise the use of a microswitch on the room door which, when opening,
automatically:
- turns room light ON, stops evaporator fan and compressor
- overrides temperature alarm (for abt. one hour after door closing).
If a door microswitch, room light and door heater are required, proceed as follows:
Door microswitch connection:
Remove the electric bridge between terminals 19 and 20 on the electronic control
panel and connect there door microswitch cable according with this condition:
contact closed/ door closed.
Room lamp connection:
It has to be done between the fuse-holder terminal FL and the neutral terminal N5
The room lamp must be 230 Volt - 100 Watt.
Door heater connection:
Door heater is to be connected between the fuse-holder terminal FEP and the
neutral terminal N4. The heater is marked by the letters EP.
The output voltage is 230 Volt.
Summary of Contents for DB-S Series
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