Chapter F: PARTS REPLACEMENT AND REPAIR 3 COLUMN PARTS REPLACEMENT
Technical manual Planmeca ProOne 143
Care must be taken when replacing the lift motor steel cable. Removing parts of the
lift motor assembly may make the column fall causing a dangerous situation and/or
damage to the X-ray unit. The downwards movement of the moving column must be
eliminated before detaching any parts.
The X-ray unit contains live mains voltage parts. Always disconnect the X-ray unit
from the mains before carrying out any servicing work on the lift motor.
Open the front panel as described in section 1.1 "Opening the front panel" on page 117.
Lock the moving column in position by inserting a locking pin in the back of the column.
Carefully drive the moving column up/down until the lower locking pin hole is in the correct
position (1). Insert the locking pin into the hole (2). Then drive the lift motor down an
additional 10 mm (0.4 in.) to slacken the lift motor steel cable. Now switch the X-ray unit off
and disconnect it from the mains.
Be careful not to damage the mains cable while inserting a locking pin into the lower locking
pin hole.
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