KaVo ORTHOPANTOMOGRAPH OP 3D Pro, Руководство по обслуживанию, Страница: 189 / 192

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8 Maintenance procedure
In some countries it is mandatory to ensure the system
image quality and consistency through regular quality
controls. The dealer should provide the necessary
instructions on how to do the QC according to the local
regulations.
The maintenance procedure described below must be
carried out at regular intervals in accordance with national
regulations regarding the use and maintenance of x-ray
devices that are in force in the country in which the unit is
installed.
The calibrations mentioned in the user manual can be
done by the user. Only qualified service personnel is
allowed to do the calibrations mentioned in the installation
manual.
In any event, the maintenance procedure must be carried
out at least once a year. When taking measurements that
require a multimeter, always use a calibrated digital
multimeter (DMM).
Annual maintenance
1. Power on the unit and make it ready for exposure in the
“Panoramic light” service program. Check that the rotator
stays firmly in position. No noticeable slack shall be pres-
ent in X, Y and N directions. For the rotational movement
some minor slack can be allowed, as long as the move-
ment centers itself to the same position after being
pushed. If slack is encountered, check for loose parts
and exchange worn out parts. Tighten the rotational
movement belts if needed.
2. Power off the unit and disconnect it from the mains power
supply.
3. Check the condition of the main power supply cable. Re-
place the cord if damaged.
4. Remove the tube head covers.
5. Check that the tubehead shows no signs of leaked oil.
Replace the tubehead if it shows any signs of leakages.
6. Use a vacuum cleaner to remove dust accumulated in
and around the air intake of the generator housing.
7. Check the safety ground continuity by measuring the re-
sistance between the ground pin on the connector of the
mains power supply cable and some metal part of the