ivory SL611C Instructions Pour L'utilisation page 53

Fitting and removing the rotary bur
CAUTION!
Never use burs that are bent, deformed, worn, corroded, broken or
defective, burs with cracks in the edges or shafts, burs that do not conform
to ISO standards, burs that have been tampered with, or burs that do not
conform to the specifications given herein. Follow the instructions provided
by the manufacturer of the bur you are using. Only use burs that satisfy the
following criteria: bur shaft diameter: 2.334/2.350 mm, type 1 according to
ISO 1797-1, max. length 21.95 mm, code 4 according to ISO 6360-1.
DANGEr!
Always wear gloves to avoid the risk of lesions and infections when
checking, cleaning, repairing or extracting teeth.
DANGEr!
Only fit the bur in the handpiece when the handpiece is stopped.
Never attempt to grip a bur while it is rotating, even when it is nearly
stopped.
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