Schumacher PI-400 Welding System User Manual


 
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Power Source
Your average automobile or marine battery will provide an
ample power supply to the inverter for 30 to 45 minutes
even when the engine is off. The actual length of time the
inverter will function depends on:
1. Age and condition of the battery.
2. Power demand being placed by the equipment being
operated with the inverter.
If you decide to use the inverter while the engine is off,
we recommend: Turn OFF the device plugged into the
inverter before starting the engine. Start the engine
every hour and let it run for approximately 10 minutes to
recharge the battery.
Attention: 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. When
the inverter is not supplying power, it draws a very low
amperage from the battery. The inverter may be left con-
nected to the battery for up to three hours. It is recom-
mended that the inverter always be disconnected when
not in use.
Safety Features
The LED Indicator light will turn from GREEN to RED and
the inverter will automatically turn itself off when:
1. The power input from the battery drops to approximately
10 volts. (When the power input drops to approximately
10.5 volts, an alarm will sound for an extended period).
2. The power input from the battery exceeds 15 volts.