REMOVE AND REPLACE OR REPAIR DEFECTIVE COMPONENTS
OF THE DENTAL OPERATING UNIT
Once you have isolated a malfunction in the A-DEC dental operating unit, you
must remove and replace or repair the defective component. You can service most A-
DEC valves and components in the field with the aid of certain special tools described in
this lesson. This may be particularly necessary when you need to get a doctor's
equipment back into operation quickly. The procedures covered in this lesson are
examples of the methods to use to correct common malfunctions.
MEDICAL REPAIRER'S EQUIPMENT
The following is a description of the types of tools, beyond the medical equipment
repairer's tool kit and volt-ohm meter (multimeter) that may be required in removing and
replacing or repairing components of the A-DEC dental operating unit.
a. Hemostats. These are useful for temporarily stopping air or water flow
through the tubing while troubleshooting or repairing the unit. Refer to figure 6-1.
Figure 6-1. Hemostats.
b. Valve Test Syringe. Use the syringe for making quick tests of the pilot-
operated valves. It can apply a static pressure of 5 to 75psi. Refer to figure 6-2.
Figure 6-2. Valve test syringe.