PERFORM PREVENTIVE MAINTENANCE CHECKS AND SERVICES ON
THE DENTAL CHAIR AND STOOL
The model JSR dental chair has control switches located on both sides of the
back with exclusive arm supports to help position the patient more comfortably. The
chair features the "horseshoe" headrest and is mounted on a PLR-200 base. The stool
has an adjustable height swivel seat mounted on a base with casters. It is your
responsibility to keep the dental chair and stool operating efficiently. This lesson covers
the appropriate PMCS procedures to best accomplish this task.
DENTAL CHAIR COMPONENTS
a. Dental Chair and Stool Component Overview. Refer to figure 1-1. The
dental chair and stool consist of the following components.
Floor plate assembly.
(2) Chassis assembly that houses the base motor assembly, the foot switch,
and the brake pedal.
Chair mount assembly.
(6) Cradle assembly that houses the chair back motor, the chair seat motor,
and the AUTO/MANUAL mode toggle switch located in the junction box.
Chair seat assembly.
Chair back assembly that houses the control buttons.
(10) Stool saddle seat.
(11) Stool post.
(12) Stool stop assembly.