(2) Place an ultrasonic probe into the sleeve, and verify that there is water
(a) Adjust the water flow by using the corresponding number 4 flow control
valve, as necessary.
(b) Adjust the amplitude of the ultrasonic output by using the scaler
control potentiometer that is located on the right hand side of the control head.
p. Verify that adequate water simultaneously flushes all handpieces when you
depress the toggle valve on the rear of the control head.
ROUTINE PREVENTIVE MAINTENANCE CHECKS AND SERVICES
You must perform routine PMCS at least semi-annually to ensure continued
reliable operation of the dental operating system. Preventive maintenance checks and
services must also be performed each time a defective component is removed,
replaced, or repaired.
a. Inspect Parts. Inspect parts whenever you remove and replace or repair
defective components of the dental operating system.
Air and water filters must be inspected monthly to ensure adequate delivery
pressures in the dental unit.
(1) Replace all rubber gaskets or diaphragms of the defective components
(2) If the old gasket is re-used, inspect the gasket or diaphragm for pin
holes or cracks.
(a) Use a magnifier to detect flaws that are too small to see otherwise.
(b) Inspect all sealing parts and surfaces of the seal area (the seal
itself, the bore or seat in the valve body, and the O-ring groove in the valve stem or
piston). Defects in any of these may result in a seal leakage.
b. Lubricate Parts. Lubricate parts whenever you remove the O-rings and are
ready to replace them.
Apply a light coat of silicone grease before installing the O-rings.
Lightly lubricate the seal bores before inserting the stems and pistons.
(3) Lubricate the internal moving parts, the oral evacuator valves, and the
bushings in the moveable arm systems whenever they require repair or replacement, or
as otherwise necessary to ensure that they remain pliant.