Quantum 1121
15
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I I I . Y O U R P O W E R C H A I R
Electronics Tray
The electronics tray is located on the back of the power base. See figures 6 and 7. The ammeter, the optional
onboard charger, the charger power cord receptacle, the main circuit breaker, the controller connector, and the
charger fuse are all located on the electronics tray.
Ammeter:
The ammeter displays the charger’s current output in amps. See VI. “Batteries and Charging.”
Charger Power Cord Receptacle (with optional onboard charger):
This is where the charger power cord plugs
into the power base.
Main Circuit Breaker:
The main circuit breaker is a safety feature built into your power chair. When the batteries
and the motors are heavily strained (e.g., from excessive loads), the main circuit breaker trips to prevent damage
to the motors and the electronics. If the circuit trips, allow your power chair to “rest” for approximately one
minute. Next, push in the circuit breaker button, turn on the controller, and continue normal operation. If the main
circuit breaker continues to trip repeatedly, contact your Quantum Rehab Provider.
Controller Connector:
This is where the controller connects to the power base. Each controller uses a different
type of cable. Regardless of which type of controller is used, the cable must be secured to the seat assembly and
not allowed to drag on the floor.
Charger Fuse (with optional onboard charger):
The charger fuse protects the ammeter from current overload.
There are three fuses on the utility tray. The top one is the charger fuse. The bottom two are spares.
Active-Trac Suspension
The Quantum 1121 is equipped with Active-Trac Suspension (ATS). ATS is a suspension system designed to
make your power chair traverse different types of terrain and obstacles while maintaining smooth operation. With
ATS, the front anti-tip wheels work in conjunction with the motor suspension to help you maneuver over obstacles
in excess of 7.62 cm (3 in.) in height.
As the front anti-tip wheels come in contact with an obstacle, the front anti-tip wheel assembly is drawn upward.
At the same time, the motors are forced downward. This allows the motors to push the power chair over an
obstacle without the possibility of becoming “hung up” on the obstacle.
ATS also helps in day-to-day operating conditions. For instance, when you release the joystick, your power chair
begins to slow down. As the chair slows down, the front anti-tip wheels will automatically drop toward the ground.
This will reduce the forward tip that is typically encountered with centre-wheel drive chairs.
