Planmeca Proline EC ceph, Техническое руководство

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Chapter D - ADJUSTMENT & CALIBRATION
Planmeca Proline EC X-ray unit D-19
MECHANICAL ADJUSTMENT OF THE ROTATIONAL PART
Technical Manual
4 MECHANICAL ADJUSTMENT OF THE ROTATIONAL
PART
When designing the unit we aimed at minimizing need for adjustments in connection with
assembly and service. The technique used, particularly guidance electronics, has permitted
us to eliminate most adjustments, but there are still certain adjustments to be done.
Some of the adjustments related to the mechanics of the unit cannot be done without special
tools (alignment tools). It is important therefore to check that all special tools for assembling
the unit are available, see “REQUIRED TOOLS” on page D-1.
4.1 Guiding profile and counterprofile
The clearance between the guidance profile and the counterprofile can be checked and
adjusted if necessary when the loading spring of the drive wheel is removed. Also the drive
wheel with transmission can be removed, but this is not necessary. Note that all major parts
must be installed so that the rotational part has about its final weight.
Provided that these requirements are fulfilled the clearance can be observed by moving the
rotating unit sidewards from both ends (see figure below). Note that the rotating unit has to be
half way trough the rotating cycle. When moving the rotating unit parallelly sideways the longi-
tudinal clearance appears as clearance.
Figure 26