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5 Operating the 500 Inverter
This section describes normal operation as well as several
problems that could occur when you use the inverter. If you
have a problem, see “Troubleshooting” on page 20.
Operating Statuses
• Normal Operation When you connect the inverter to
your vehicle’s 12 volt source and turn on the On/
Standby switch, the green
PWR
light comes on, and AC
power is available at the outlet.
The inverter shuts down automatically in response to
low battery voltage, high battery voltage, AC overload,
overheating, or a short in the AC output.
• Low Battery Voltage Alarm and Shutdown As the
battery discharges, its voltage decreases.
When the inverter senses that the voltage at its DC input
has dropped to 10.7 volts, it sounds an alarm. This gives
you time to shut down computers or other sensitive
devices. If you ignore the alarm, and the DC input drops
to 10.0 volts, the inverter shuts down the AC load being
operated. The
PWR
light stays on, the alarm stays on, and
the light comes on as well. The low battery
voltage shutdown feature is designed to save the battery
from excessive discharge, which can prevent you from
starting your vehicle, or more seriously, damage the
battery.
• Possible shutdown when the vehicle’s engine is
started The 500 Inverter will operate while your
vehicle’s engine is running, but the normal voltage drop