How Power Converters Work; Led Indicator And Shutdown Protection; If The Converter's Fuse Blows - Schumacher Electric XI14 Owner's Manual

There are two stages involved in transforming 12 volt DC (battery) power into
120 volt AC (household voltage):
STAGE 1: The power converter uses a DC to DC transformer to increase the
12-volt DC input voltage from the power source to 145 volt DC.
STAGE 2: The converter then converts the 145 volt DC into 120 volts AC
(household voltage) using advanced MOSFET transistors in a full bridge
configuration. A "modified sine wave" waveform is generated by this conversion.

LED INDICATOR AND SHUTDOWN PROTECTION

The LED glows GREEN automatically when plugged into a 12 volt DC source
and will not glow under the following conditions:
1. When the power input from the vehicle's battery drops to approximately 10
volts, low battery shutdown occurs and the converter shuts off. Recharge or
replace the battery.
2. When the power input from the vehicle's battery exceeds 15 volts, high voltage
protection occurs. Reduce the voltage range to between 12 volts and 14 volts.
3. The continuous load demand from the equipment or device being operated
exceeds the continuous load rating of the converter. Use a higher capacity
converter or lower rated device.
4. The case temperature becomes hot (exceeds 145°F). Allow the converter
to cool. Do not block the cooling slots or air flow over and through the
converter. Reduce the load on the converter to the continuous rated output.
RESET: To reset after shutdown occurs, remove the 12 volt plug from the
accessory outlet. Check the source of the problem and correct. Reinsert the
12 volt plug into the accessory outlet.
Your power converter is fitted with a fuse, which should not have to be replaced
under normal operating conditions. A blown fuse is usually caused by reverse
polarity or a short circuit within the device or equipment being operated.
If the fuse does blow:
1. Disconnect the device or equipment immediately.
2. Find the source of the problem and repair it.
3. Install a new 15 amp fuse. The fuse can be found on the end of the plug on
the converter.
4. Do not overtighten the fuse cap; finger-tight is sufficient.
IMPORTANT: Do not install a fuse higher than 15 amp, as this may damage
the converter. Make sure to correct the cause of the blown fuse before using
the converter again.

HOW POWER CONVERTERS WORK

IF THE CONVERTER'S FUSE BLOWS

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