Height Adjustment Motor (M1_4)/Spindle; Preparing For Motor Replacement; Moving The Slide Manually - Sirona ORTHOPHOS SL 2D Service Manual

9 Repair
9.2 Height adjustment motor (M1_4)/spindle
Height adjustment service kit
332
9.2

Height adjustment motor (M1_4)/spindle

9.2.1

Preparing for motor replacement

1. Switch the unit on.
2. Use the Up/Down keys on the control panel to move the slide up.
3. Switch the unit off again.
4. Remove the covers [ → 37]:
– Intermediate piece
– profile cover (top and bottom)
Tip: While loosening the screws, press the top profile cover down
towards the unit and allow it to slide down once the screws are loose.
– Arm cover
– Slide cover rear, center
– Slide cover rear, top
– Slide cover rear, bottom and
– Slide cover front.
Tip: If the height adjustment motor is inoperative, you can also move the
slide manually [ → 332].
9.2.1.1

Moving the slide manually

XGPF-38474; Spindle safety strap
CAUTION
uncontrolled movement of the slide
Service engineer may be injured
➢ Secure the position of the slide with the height adjustment service
kit.
➢ Make sure that no one is located underneath the ring arm during the
repair.
If the slide can no longer be moved electrically, it must be moved
mechanically.
You must lock the slide in position to prevent the risk of the carriage
plummeting downward during service work if the self-locking function
does not fully engage. Sirona recommends using the height adjustment
service kit, REF. 62 57 518. This service kit is used to prevent automatic
downward movement of the slide during service by fixing the slide and the
spindle holder.
Fix the clamp (A) securely underneath the slide. The locking pin (B) is
used to secure the spindle holder against twisting.
Sirona Dental Systems GmbH
Service Manual ORTHOPHOS SL
64 95 258 D3632
D3632.076.01.03.02 09.2016