7. Troubleshooting list
Malfunction
Craniotome handpiece cannot be
coupled to the motor
Tool cannot be coupled to the
craniotome handpiece
Tool cannot be uncoupled
Dura protector or attachment cannot
be fixed to the craniotome handpiece
Dura protector cannot be fixed to the
craniotome handpiece
Dura protector (pivoted) 24 can only
be pivoted with difficulty or not at all
No progress at the skull calotte even
with the system working without any
problem
Poor progress in the cutting slit
Craniotome handpiece not running
Excessive running noise
Cause
Threaded ring 2 not in unlocked
position
Deformation of the motor
coupling on the craniotome
handpiece
—
Automatic locking mechanism not
working
Fixation screw worn
Slide locked
Swivel ring 10/18/21 not in
unlocked position
Dura protector foot standing on
craniotome reamer
Excessive friction at the bearing
points
Wide gap between dura protector
foot and craniotome reamer
Badly soiled or blunt craniotome
reamer
Cutting radius to small
Craniotome handpiece badly
canted in the cutting slit
Bent guard bracket of the dura
protector
Craniotome handpiece jammed
Motor safety stop in "0"-position
Worn gear or bearing
Finding
Check the position of the
threaded ring.
—
Tool shaft bent
Pressure point cannot be passed Couple the tool with slide 7 actuated
Tool cannot be uncoupled even
with the slide fully actuated
Locking ring in locked position
Check the position of the swivel
ring
Dura protector too short
Bearing points soiled or
damaged
Dura protector too long
Inspect the craniotome reamer
—
—
Front face of craniotome
reamer C not positioned
between stop face A and base B
of the dura protector foot
Motor runs with handpiece
decoupled
—
Strong running noise during
normal operation
Remedy
Turn the threaded ring in the
direction of the arrow in symbol
as far as it will go
Have product repaired by the
manufacturer
Use a new tool
Have product repaired by the
manufacturer
Rotate the locking ring by 180° to
unlock the slide
Turn the swivel ring in the direction
of the arrow in symbol
as far as
it will go
Number of rings on the craniotome
reamer must match number of rings
on the dura protector
Have the craniotome handpiece and
the dura protector repaired by the
manufacturer
Number of rings on the craniotome
reamer must match number of rings
on the dura protector
Clean the craniotome reamer, or use
a new one
Cut at a larger radius
If possible, always work at the same
reamer angle
Use a new dura protector
Have product repaired by the
manufacturer
Turn the safety stop on the motor to
the "I"-position
Repair by manufacturer
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