Planmeca Proline CC, Technical Manual

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Chapter D - ADJUSTMENT & CALIBRATION
D-22 Planmeca Proline CC panoramic x-ray
Technical Manual
5.2 Adjustment of the guidance wheel
The guidance wheel can be adjusted if the driving wheel with gear is detached and clearance
between guidance and counter profile and is correctly adjusted. The guidance wheel is attached
to the rotating unit (1) through a flange (2). The flange is fixed to the rotating unit with screws (3)
and a bolt pin (4). By unscrewing the screws (3) the flange can be turned around the bolt pin (4).
Figure 35
The guidance is adjusted when the rotating unit is in a position corresponding to the middle point
of the exposure. In principle, the guidance wheel should be placed as near the inner edge of the
groove as possible. For proper adjustment turn the rotating unit with both hands. Always turn the
rotating unit from the cassette head end and move it throughout the rotating cycle calmly and at a
speed corresponding to the actual speed. If the guidance wheel has been adjusted too far from
the inner edge of the groove, a clack of the counter profile meeting the guidance profile can be
heard when moving the unit from the start position to the middle position. If the guidance wheel
has been adjusted too close to the inner edge of the driving groove the movement is sticky in an
area corresponding to a 45° angle in relation to the central area. The adjustment can be found
only by experimenting.
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2
3
4