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Installing and connecting the refrigerator
The refrigerator can be operated with a 12 V or 24 V DC voltage supply.
For safety reasons, the refrigerator is equipped with an electronic system to prevent
the polarity being reversed. This protects the refrigerator against reversed polarity
when connecting to a battery and against short circuiting.
To protect the battery, the refrigerator switches off automatically if the voltage is
insufficient (see table below).
Cut-off voltage
Cut-in voltage
➤ Determine the required cross section of the cable in relation to the cable length
according to fig. d, page 10.
Key for fig. d, page 10
Coordinate axis
l
∅
A
NOTICE!
Make sure the polarity is correct.
➤ Before starting up the device for the first time, check whether the operating
voltage and the battery voltage match (see type plate).
➤ Connect the refrigerator
– as directly as possible to the poles of the battery or
– to a plug socket which is fuse protected with at least 15 A (at 12 V) or 7.5 A
(at 24 V).
20
12 V
10.4 V
11.7 V
Meaning
Cable length
Cable cross section
HDC155
24 V
22.8 V
24.2 V
Unit
m
mm²
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