Planmeca ProMax Technical Manual

Chapter D - PREVENTIVE MAINTENANCE
Planmeca ProMax D-5
MECHANICAL CHECKS
Technical Manual
3 MECHANICAL CHECKS
3.1 Column motor nut
The column motor is equipped with double motor nut assembly consisting of lower, solid nut
(primary), and upper, floating nut (secondary). In case the primary nut fails, the secondary nut
becomes active. The visual check of the column motor nut assembly must be performed once
a year as follows.
Switch the unit off. Remove the two rear cover plates of the telescopic column as described in
section 2.2 “Removing the telescopic column rear cover plates” on page G-10. Switch the unit
off.
The column motor nut assembly is attached to the stationary column and can be seen from
the opening on the stationary column top. Check, whether the lug of the indicator sheet is
bent and the top surface of the secondary motor nut is level with the edge of the column nut
frame, or a little higher (see Fig. 1 below).
Figure 1
In case the secondary nut is clearly inside the column nut frame and the lug of the indicator
sheet is straightened, the column motor nut assembly must be replaced according to the
instructions given in section 3.2 “Replacing the lift nut assembly” on page G-18.
Liftnut2.eps
Column nut frame
Upper motor nut
Lug of the
indicator sheet

Planmeca ProMax Specifications

General

Category	Medical Equipment
Type	Cone Beam Computed Tomography (CBCT) System
Software	Planmeca Romexis
Imaging Modes	CBCT
Imaging Modalities	2D Panoramic
X-ray Generator	High Frequency Generator
Focal Spot Size	0.5 mm
X-ray Tube Voltage	60-90 kV
Exposure Time	Varies depending on imaging mode and parameters
Dimensions	Varies significantly depending on model and configuration
Weight	Varies significantly depending on model and configuration
Power Requirements	50/60 Hz
Patient Positioning	seated