8
CAUTION
• Do not use burs other than specified in "9. Specifications" as such burs may be accidentally released or break during rotation.
• Always keep the bur shank clean. Debris in the chuck could cause poor bur concentricity or low chuck retention force.
• Always insert the bur all the way into the chuck. If insertion is insufficient, premature failure of the handpiece head bearings, or accidental release of the bur, may occur.
• Do not exceed Max. Bur Length shown in "9. Specifications".
• Always follow the instructions provided by the bur manufacturer.
• Do not exceed the bur speed recommended by the bur manufacturer.
• Do not insert or remove the bur until rotation has completely stopped.
• Do not apply excess pressure to the bur as it may break or bend and become difficult to remove.
6. Checking the Handpiece Before Each Use
Follow the check procedure below before use. If any abnormalities are found, stop using the handpiece
immediately and contact your Authorized NSK Dealer.
1) Check the Head Cap is firmly tightened.
2) Check coolant water is flowing properly.
3) Insert the bur. (Refer to "5. Inserting and Removing the Bur")
4) Rotate the handpiece for about one minute, using coolant water, and with the motor operating at full
speed. During rotation, check for abnormalities such as abnormal rotation, vibration, noise.
5) After the handpiece rotation has completely stopped, touch the handpiece head to confirm the head is
NOT heating abnormally (Fig. 5).
Fig. 5
