13
ENG
L
ISH
Straight
Handpie
ce
13
CAUTION
Ř
Disconnect the handpiece only after the motor has completely stopped rotating.
WARNING
Ř
Make sure to align the mark with " " mark. If those marks are not completely aligned, it may
cause handpiece overheating or patient burn injuries.
17. Connection & Disconnection of the Handpiece and Motor
17-1 Connection
1) Connect the handpiece direct to the motor. (Fig. 2)
2) Make sure the handpiece is firmly connected to the motor.
17-2 Disconnection
Hold the motor and the handpiece separately and disconnect with care.
18. Insertion & Removal of the Bur
18-1 To Insert the Bur
1) Turn the Bur Lock Ring in the direction of the "
" mark until it clicks. (Fig. 23)
2) Insert the bur fully into the chuck then turn the Bur Lock Ring in the direction of the mark " " until it
clicks.
3) Test that the bur is secure by gently pulling and pushing th e bur.
18-2 To Remove the Bur
Turn the Bur Lock Ring in the direction of the "
" mark until it clicks then remove the bur.
CAUTION
Ř
Always insert the bur fully into the chuck. Insufficient insertion of the bur could cause premature
failure of the bearing.
Ř
Remove the bur only after the handpiece has completely stopped rotating.
Ř
Do not rotate the handpiece when the Bur Lock Ring is turned to "
" (OPEN) position or a bur is
not inserted.
Ř
Always keep the bur shank clean.Entry of debris into the chuck, via the bur shank, could cause bur
rotation slip and also prevent the bur from being securely located in the chuck.
Ř
Do not exceed the bur speed recommended by the bur manufacturer.
Ř
Do not exceed maximum bur length recommended by the handpiece manufacturer.
Ř
Do not apply excess pressure to the bur as it may break or bend or become difficult to remove.
Ř
DO NOT use burs with problems listed below as the bur may break or disengage from the chuck.
- Bent, deformed, anisomerous (worn), rusted, broken, deficient bur.
- Bur which is cracked on the edge or axis.
- Non-ISO standard, or tampered bur.
19. Check before treatment
Check for handpiece vibration, noise and overheating. If any abnormalities are found do not use the
handpiece and contact your Authorized NSK Dealer.
CAUTION
Ř
To avoid injury, keep your hands away from the bur during rotation.
