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[7]Inspection 2.
2. Standard Periodic Inspections
In addition to the daily inspections listed on the previous page, perform the
following inspection once every 6 months.
If any problems or abnormal conditions are found, contact your local dealer
or the J.Morita Corp. to resolve the problem as soon as possible.
Main Dental Treatment Unit and Chair
Air Turbine Handpieces
１
２
３
４
５
６
７
８
９
10
11
12
13
Hand piece
connections
Check and repeat 3 times: 1. handpiece detachment and
attachment. 2. Handpiece does not come off when given a
light tug.
Power Supply Voltage
Floor and Base
Manual operation of
Seat and Back rest
Auto-Positioning
Emergency Stop for
Auto-Positioning
Head rest
Electronic circuitry
and wiring
Air, Water and
Hydraulic Lines
Seat and Back rest
Installation
Screw and outer cover
tightness
Internal cleanliness
Quantity of oil
Use digital or analog tester. Specified standard voltage range:
AC 220 / 230 / 240 V 10%
Check that the floor is level and that the base of the unit has
not loosen up or gotten wobbly.
Use the levers on the foot control to move the seat and back
rest. Repeat 3 times.
Use the auto-positioning switches to set the chair in each
auto position. Repeat 3 times.
Test emergency stop procedures while the chair is while
auto-positioning is being carried out. Repeat 3 times. (Re-
fer to the operator’s manual for the various emergency stop
procedures.)
Check the head rest’s movement (both angle and slide bar).
(Refer to the operator’s manual for adjustable parts.)
Check the printed circuit boards, electrical components and
elements for:
1. loose connections,
2. frayed insulation
3. broken or bent leads.
Check all water, air and hydraulic lines for:
1.loose connections, 2.wobbly connections
3.broken, bent, or pinched lines, and 4.cracks.
Check for: 1.looseness, 2.wobble
and 3.squeaking or grating noise.
Check all screws, bolts and housing for: 1. looseness,
2.wobble, and 3.missing screws, bolts or other parts,
4.scrapes, tilting, scratches, bending
Look for dirt, dust or other contamination inside the unit and
clean it as necessary.
When the chair is in the reset position(Chair height: lowest,
Backrest angle: 70
°
), quantity of oil shall be 30mm or more
from the bottom of the oil tank.
No.
Item
Description
Record