KaVo INTRAmatic Contra-angle 23 ES 1.004.5380 Instructions For Use Manual page 35

5 Operation 35 / 74
CAUTION
Activation of the push-button collet chuck when the tool is
rotating.
Injuries.
Damage to the chucking system.
▶ Never push the push-button when the tool is rotating!
▶ After the tool has stopped rotating, press the push-button down with
your thumb and simultaneously remove the tool.