SYSTEM OPERATION
The system receives its power from the ignition switch. With the switch “OFF” all
the power is removed from the system and the solenoid is deenergized.
As soon as the operator turns the ignition “ON”, the system is powered and
detects the voltage of the main and auxiliary batteries. If the auxiliary battery
voltage is 12.4 volts or greater, (indicating sufficient charge) cranking the engine
will cause the paralleling solenoid to be energized. A 10-second timer will
maintain the paralleling solenoid if the engine doesn’t start immediately and must
be cranked a second time. When the engine starts the alternator output raises
the battery voltage. This increase in voltage is detected and the paralleling
solenoid is held energized charging both batteries.
If when the engine is started the auxiliary battery voltage is below 12.0 volts the
paralleling solenoid is not energized while cranking. As soon as the engine
starts, the alternator raises the main battery voltage and the solenoid is
energized charging both batteries.
Upon engine shutdown the ignition switch is placed in the “OFF” position. Power
is removed from the Auto Isolator and the solenoid is deenergized.
