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32 www.pridemobility.com Jet 3/Rev I/Feb03
VIII. OPERATION
NOTE: We recommend that the first few times you operate your power chair, you set the speed to the
slowest setting until you become familiar with your new power chair.
Actuator Key and Actuator Lights (for optional equipment)
Actuator keys and actuator lights are used for optional equipment such as power elevating seats or power elevating
leg rests. For specific operation of the actuator keys and actuator lights, contact your authorized Pride provider.
Horn Key
The horn key activates the horn.
Off-board Charger/Programming Socket
You may use an off-board charger to charge the power chair batteries through the 3-pin socket located on the front
of the VSI. See figure 17. If you use an off-board charger, the charger current should not exceed 12 amps. Contact
your authorized Pride provider for more information.
NOTE: The socket may also be used for reprogramming the VSI. Contact your authorized Pride provider
for more information.
Controller Connector
This connects the VSI to the power chairs batteries, motors, and motor brakes.
3-pin Charger Inhibit Connector
This connects the VSI to the onboard battery charger. This connection provides an inhibit that disables the VSI
when the battery charger is on. The charger inhibit connector is coded with colored dots. The dots are positioned
so that you align the flat side of the male connector with the flat side of the female connector before making the
connection.
CAUTION! Failure to properly align the connectors can result in damage to the VSI, the
charger, and the connectors.
Thermal Rollback
The VSI controller is equipped with a thermal rollback circuit. The circuit monitors the temperature of the controller,
which roughly translates to motor temperature. In the event that the VSI controller becomes excessively hot
(above 140° F), motor current (amperage) is reduced. For every degree above 140° F, the motor current limit is
reduced by .55 amps until the VSI controller reaches 158° F, at which time the current output is reduced to zero.
This reduces your power chairs power, which could also reduce your power chairs speed, and allows the
electrical components and motors to cool down. When the temperature returns to a safe level, your power chair
resumes its normal operation.