Electrical Connections; Inner Light; Operation With Converter - Isotherm CR 42 Instrucciones De Instalacion Y De Uso

4.4 Electrical connections/wiring
When connecting the refrigerator electrically, it is
important that following points are considered:
Always use cables of suffi cient area. The area in the
following table should be regarded as a minimum.
* Always connect the refrigerator directly to the battery
or to the battery main switch on the plus circuit. Do
not connect it via the boats own control panel or
other diversions as this can cause a voltage drop in
the power supply. Use the included fuse holder with
a 15A fuse. Use 7.5A fuse in a 24 volt system. The
fuse shall be mounted on the plus cable.
* Connect the red cable to the positive (+) terminal
and the black to the negative (-) terminal. Use tab
type terminals for the connection to the electronic
unit and other cable connectors of suffi cient size for
the cable size selected.
* Do not connect the refrigerator direct to a battery
charger. The battery charger must be connected to
the battery.
4.5 Wire dimensions
Cable Wire
area mm² gauge #
2.5 12
4 10
6 10
Max cable Max cable
length in m/ft. length in m/ft,
12V 24V
2,5 5
4 8
6 12

4.6 Inner light

The refrigerators except CR 42, CR 42 INOX & CR
100 have inner light mounted in the top of the cabinet.
Be sure the right type, 12 or 24 volt, is mounted before
the refrigerator is powered. Both 12 and 24 volt bulb
are included in the delivery.
Max 3W bulb is to be used.
When replacing the bulb, push the light glass assem-
bly downwards with the on-off push pin. Replace the
bulb and push back the light assembly into the plastic
housing.
See fi g. below.

4.7 Operation with converter

As an option, the refrigerators can be equipped with
an converter which operates on the mains power. It
can be mounted direct on the back of the refrigerator
or separately besides the refrigerator. The converter
will feed the power for the compressor direct from the
mains as long as this is available, and automatically
switch over to battery power when no mains power
is available. The converter must be connected to the
mains with an earthed power plug.
Wiring diagram
1. Electronic unit 12/24 V
2. Battery
3. Fuse 15 A-12 V / 7.5 A-24 V
4. Converter 100-250 VAC / 24 VDC
5. Light 24V max 3W
6