Operating Instructions; Power Source; Led Indicator And Shutdown Protection - Schumacher PI-140 Manual Del Usuario

4. OPERATING INSTRUCTIONS

1. Push the 12 volt power plug firmly into the 12V accessory outlet.
2. The LED indicator light should glow GREEN, verifying the inverter is receiving power.
3. Make sure the device to be operated is turned OFF.
4. Plug the device into the inverter AC outlet or USB port.
5. Turn the device on.
6. To disconnect, reverse the above procedure.
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.

5. POWER SOURCE

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.

6. 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 10V,
low battery shutdown occurs and inverter shuts off. Solution: Recharge or
replace the battery.
2. When the power input from the vehicle's battery exceeds 15V, high voltage
protection occurs. Solution: Reduce the voltage range to between 12V and 14V.
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