Thermal Protection; Main Circuit Breaker - Heartway Medical Products HP7K User Manual

Free-wheeling is accomplished by turning the free-wheeling levers to the free-wheeling
position.(See Fig 17)
Warning !
→Never free-wheel your power wheelchair on a slope.
→Never free-wheel the motors while operating your vehicle.
→Always remember to engage the motors before turning the power back ON.
D. Electromagnetic Brakes:
Your power wheelchair comes with an Electromagnetic Brakes., i.e. an
safety brake which is also known as Fail-Safe brake.
The Electromagnetic Brakes are automatic and work when the power wheelchairs 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 17
to make sure brakes are in good condition.
E. 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, the controller reduces 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.
F. Main Circuit Breaker:
The main circuit breakers reset button located near the seat.(Fig 18 )
(Fig 17)
14
automatic magnetic disc