Figure 1-1. Dental chair and stool components.
b. Pedestal and Motor Assembly. The base motor is located on the rear of the
pedestal in the chassis assembly. The pedestal can be rotated 360 degrees by
releasing the manually operated lock that is located on the doctor's side of the chair at
the base of the pedestal. The purpose of the base (lift) motor assembly is to raise and
lower the chair. This is done in one of two ways.
By using the foot switch located on the pedestal.
(2) By using the doctor's lowermost switch which lowers the chair to the exit
position. You cannot raise the chair with this switch.