HDC275 Installing and connecting the refrigerator
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7.3 Connecting the refrigerator to the power supply
A
The refrigerator can be operated with a 12 Vg or 24 Vg 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).
➤ Determine the required cross section of the cable in relation to the cable length
according to fig. m, page 8.
Key for fig. m, page 8
A
➤ Before starting up the device for the first time, check whether the operating
voltage and the battery voltage match (see type plate).
NOTICE!
• To avoid voltage drops and loss of performance, keep the
connection cable as short as possible and not be interrupted.
Therefore avoid additional switches, plugs or power strips.
• Disconnect the cooling device and other electric consumers from
the battery before you connect the battery to a quick charging
device.
Overvoltage can damage the electronics of the device.
12 V 24 V
Cut-off voltage
10.4 V 22.8 V
Cut-in voltage
11.7 V 24.2 V
Coordinate axis Meaning Unit
l Cable length m
∅ Cable cross section mm²
NOTICE!
Make sure the polarity is correct.
HDC275-IO-West.book Seite 19 Dienstag, 14. März 2017 8:41 20