FR35 DC, FR35 AC/DC
6.4
Using the battery monitor
The device is equipped with a multi-level battery monitor that
protects your vehicle battery against excessive discharging when
the device is connected to the on-board 12/24 V supply.
If the cooler is operated when the vehicle ignition is switched off,
the cooler switches off automatically as soon as the supply voltage
falls below a set level. The cooler will switch back on once the
battery has been recharged to the restart voltage level.
A
NOTICE! Danger of damage!
When switched off by the battery monitor, the battery will no long-
er be fully charged. Avoid starting repeatedly or operating current
consumers without longer charging phases. Ensure that the bat-
tery is recharged.
In "HIGH" mode, the battery monitor responds faster than at the
levels "LOW" and "MED" (see the following table).
Battery monitor mode
Switch-off voltage at 12 V
Restartvoltage at 12 V
Switch-off voltage at 24 V
Restart voltage at 24 V
This is how to select the battery monitor mode:
➤ Switch on the cooler.
➤ Press the "SET" button (fig. 2 4, page 2) three times.
➤ Use the "+" (fig. 2 6, page 2) and "–" (fig. 2 7, page 2) but-
tons to select the battery monitor mode.
✓ The selected mode then appears in the display for a few sec-
onds. The display flashes several times before it returns to the
current temperature.
I
NOTE
When the cooler is supplied by the starter battery, select the bat-
tery monitor mode "HIGH". If the cooler is connected to a supply
battery, the battery monitor mode "LOW" will suffice.
EN
Operation
LOW
MED
10.1 V
11.4 V
11.1 V
12.2 V
21.5 V
24.1 V
23.0 V
25.3 V
HIGH
11.8 V
12.6 V
24.6 V
26.2 V
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