REPLACING THE SEAT MOTOR
The dental chair travels beyond the exit position. You have isolated the
malfunction to a faulty limit switch. You must remove and replace the seat motor. Refer
to figure 3-10.
a. Run the chair up to its full height.
b. Disconnect the external power source.
c. Disconnect the chair electrical cords from the lift.
Figure 3-10. Removal of seat motor.