PATIENT CHAIR CARRIAGE ADJUTMENT
Version 1.10
YB-782
3/5
2
ADJUSTMENT OF THE ROLLERS
Left and right sides are as seen from the side of the chair.
Left side
Right side
•
Move the chair to top position.
Loosen the 4 large M20 nuts (3 on left side, 1 on right side).
•
Loosen the fixation of the eccentric brass bushing for the upper roller.
Adjust the eccentric bushing so that both rollers have contact on both sides of the chair guide. The
chair carriage will move slightly while this part is adjusted.
•
Tighten the screw for the eccentric bushing for the upper roller.
Check the contact patch of the rollers and guide with a 0,1mm gauge blade.
3
ADJUSTMENT OF THE M20 BOLTS
•
Adjust the upper bolt on the left side until meeting resistance and unscrew the bolt by 1/12 turn
(app. 30 degrees). Tighten the nut while keeping the bolt in position. The chair guide should not
move, if it does then the “dummy weight” is either incorrectly positioned, or the adjustment is
incorrect.
Both sides of the upper part of the carriage should have slight contact with the chair guide now.
•
Adjust the lower bolt on the left side so that the opposite side (right side) is “pulled” towards the
chair guide and achieves contact with the chair guide. When the bottom part of both sides of the
chair carriage has contact with the chair guide, unscrew the bolt by 1/12 turn (app. 30 degrees).
Tighten the nut while keeping the bolt in position.
The bottom half of the chair carriage can move a lot during this adjustment.
Both sides of the lower part of the carriage should have slight contact with the chair guide now.