Schumacher 71520 SEARS - Manual (Page 9)

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LED INDIcATOR AND ShUTDOWN PROTEcTION 5.
The LEd glows BLUE automatically when plugged into a 12-volt dC source and will
not glow under the following conditions:
When the power input from the vehicle’s battery drops to approximately 1.
10.5-volts, low battery shutdown occurs and inverter shuts off. Solution:
Recharge or Replace the battery.
When the power input from the vehicle’s battery exceeds 15.5-volts, high
2.
voltage protection occurs. Solution: Reduce the voltage range to between
11-volts and 15-volts.
The continuous load demand from the equipment or device being operated
3.
exceeds the continuous load rating of the inverter being used. Solution:
Use a higher capacity inverter or lower rated device.
The case temperature becomes hot (exceeds 145°F). Solution: Allow the
4.
inverter to cool. Do not block the cooling slots or air flow over and through
the inverter. Reduce the load on the inverter 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.
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.