Schumacher Power Inverter PID-410 - Manual (Page 12)

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Try coiling the television power cord and the input cables running from the 3.
12-volt power source to the inverter.
Affix one or several “Ferrite Data Line Filters” to the television power cord.
4.
Ferrite Data Line Filters can be purchased at most electronic supply stores.
NOTE: You may hear a “buzzing” sound being emitted from inexpensive sound
systems when operated with the inverter. This is due to ineffective filters in the
sound system’s power supply. Unfortunately, this problem can only be resolved by
purchasing a sound system with a higher quality power supply or higher quality filter.
POWER SOURCE 6.
Your average automobile or marine battery at full charge will provide an ample power
supply to the inverter for approximately 3 hours when the engine is off. The actual
length of time the inverter will function depends on the age and condition of the
battery and the power demand being placed by the device being operated with the
inverter.
If you decide to use the inverter while the engine is off, we recommend you turn OFF
the device plugged into the inverter before starting the engine. To maintain battery
power, start the engine every 2 to 3 hours and let it run for approximately 10 minutes
to recharge the battery.
Although it is not necessary to disconnect the inverter when turning over the engine,
it may briefly cease to operate as the battery voltage decreases. While the inverter
draws very low amperage when not in use, it should be unplugged to avoid battery
drain.
LED DISPLAY 7.
The LED display identifies the current status of the inverter.
VOLTS DC: The voltage of the vehicle’s battery, Portable Power jump starter or DC
power source.
VOLTS AC: The voltage supplied to the device through the AC receptacle.
WATTS: The power or wattage supplied to the device plugged into the inverter.
An audio alarm will sound when any of the following codes display. To stop the
alarm, press the ON/OFF switch:
 • – The inverter is not functional. See warranty and call Customer Service
1-800-621-5485 (Hours: 7:00 am to 5:00 pm CST).

• – The vehicle’s battery voltage is more than 15.5-volts. The inverter will
automatically restart after the voltage drops below 15.0-volts.