www.heartway.com.tw
17
(Fig 24)
B. Electromagnetic Brakes:
Your power wheelchair comes with an Electromagnetic Brakes., i.e. an automatic magnetic
disc safety brake which is also known as Fail-Safe brake. The Electromagnetic Brakes are
automatic and work when the power wheelchair is ON but in a steady state (i.e. Joystick is
released to the neutral position), even when the chair is on a slope. The Electromagnetic
Brakes will also be set when-ever the power wheelchair is OFF, but the motor levers are in
the engaged (vertical) position.
Note
: Please refer to the section titled to check brake in the Maintenance & Repair section in
page 21 to make sure brakes are in good condition.
C. Thermal Protection:
Your power wheelchair controller is equipped with a safety system called thermal rollback.
A built-in circuit monitors the temperature of the controller and motors by which the
controller can reduce the motor voltage and speed of the power wheelchair. The reduction
of the speed allows the electrical components to cool down. Although your power
wheelchair will resume its normal speed when the temperature returns to a safe level, we
recommend that you turn the power off and wait for 5 minutes before restarting to allow
the components to cool down if you find that you have lost speed suddenly.
D. Main Circuit Breaker:
The main circuit breakers reset button located near the seat of the back side on the main
frame.(Figure 26) The main circuit breaker monitors the electric current drawn from the
battery. It is a safety feature built in your power wheelchair for your extra safety. When the
batteries and motors are heavily strained (e.g., from excessive loads),the main circuit
breaker will trip to prevent damage to the motor and the electronics. If the circuit breaker
trips, wait for approximately one minute and then depress the button to reset it. Then turn
on the controller power, and continue normal operation. If the main circuit breaker
continues to trip repeatedly, contact your authorized dealer.