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Inductive loads, for example, televisions or stereo
systems (devices with an inductor or a transformer)
often require a much greater switch on current
than resistance loads with the same specified
wattage. When switching on, television sets demand
much more power than that indicated on the
rating plate.
Therefore it may be necessary to switch the power
inverter on and off several times in order to switch
the television set on.
Most heat producing devices, for example, hair
dryers, clothes irons or heating fans can not be
operated via the power inverter because the
power consumption of these devices exceeds
the output power of the power inverter.
MIn the event of uncertainty, please consult the
manufacturer of the connected appliance.
Low battery signal
When the battery runs low (under 11 V) a conti-
nuous signal tone sounds to indicate that the bat-
tery needs to be charged. The operation
LED/Overload indicator
t
continues to light up
green.
When the battery voltage drops below 10 V
the power inverter switches off and the operation
LED/Overload indicator
t
lights up red.
Handling general failures
Electrical tools
When an electrical tool will not switch on or
only runs for a short time switch the power inverter
on and off several times while the electrical tool
is switched on.
Television sets
The power inverter is shielded and puts out a fil-
tered sine wave. With the reception of, for example,
very weak television stations it can, nevertheless,
result in interferences and/or image breakdown.
In this case position the power inverter as far
away as possible from the television, antenna
cable and antenna.
Reposition the power inverter, television, antenna
cable and antenna until reception improves.
If possible use a high quality, shielded antenna
cable.
Audio systems
Some audio/video systems issue a buzzing tone
through the speaker when they are being operated
via the power inverter. The reason for this is that
these devices can not filter the modified sine
wave of the power inverter and this is not a defect
in the power inverter.
Troubleshooting
Low output voltage
Possible cause and remedy:
The power inverter is overloaded. Reduce the
load until you no longer exceed the maximum
load as specified in the technical data.
The input voltage is below 11 V. Maintain the in-
put voltage of the power inverter above 11 V to
keep the output voltage constant.
Low battery voltage signal sounds
continually
Possible cause and remedy:
The battery is defective. Replace the battery.
Insufficient voltage or power supply. Check the
condition of the 12 V in vehicle receptacle and
the 12 V vehicle plug
w
and if necessary clean
these.
IB_KH3906_BK45891_EN_LB6.qxd 10.12.2009 10:39 Uhr Seite 6
8


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