Operation - NSK Presto II Bedienungshandbuch

3-4 Installation of Handpiece
Loosen and remove the tube stopper from the handpiece
connector on the right-hand side of the control unit, and
insert it into the handpiece tubing. At this time, insert the
tube stopper so that its screw comes outside (control unit
side). (Fig. 3)
Insert the handpiece tubing into the handpiece connector,
and securely tighten the tube stopper.
Insert the tube clamp ring into the other end of the
handpiece tubing as shown in Fig. 4, and insert it into the
handpiece tubing socket as shown in Fig. 5.
Handpiece Connector Handpiece Connector Handpiece Connector Tube Clamp Ring Tube Clamp Ring Tube Clamp Ring
3-5 Installation of Handpiesce Tubing Clamps
Locate a Handpiece Tubing Clamp (two pieces supplied) at a proper location to conveniently position the handpiece
tubing.
4. Operational Procedures of Control Unit
4-1 Set the Drive Air Pressure
Supply air, and adjust to 0.25MPa by pulling the
Regulator Knob upward and turning.
When adjustment is made, push the knob down to lock.
(Fig.6)

4-2 Operation

Stepping on the Foot Pedal starts rotation.
4-3 For Finishing Work
Close the main cock of air.
Handpiece Connector Handpiece Connector Handpiece Connector
Tube Stopper Tube Stopper Tube Stopper
Handpiece Tubing Handpiece Tubing Handpiece Tubing
Fig. 4
Regulator Knob Regulator Knob Regulator Knob
4
5. Operational Procedures of Handpiece
1) As the chuck of the PRESTO handpiece is a push-in type, set the FG burs of ø1.6mm and push in as shown in Fig.7
Push in the bur of which the end is tapered by using the designated bur-inserting wrench as shown in Fig.8.
2) When removing the bur, it can be removed by turning the chuck release ring in the direction of the arrow in Fig.9.
Fig. 3
Fig. 5
6. Replacement Procedures of Cartridge
1) Fit the cartridge wrench supplied with the handpiece to the
flats of the handpiece nose. Turn the cartridge wrench as
shown in (Fig.10) after it is loosened, turn the nose by
fingers and remove from the handpiece.
2) Before inserting a new cartridge, clean the head interior.
3) Finally, securely tighten the cartridge by turning it in the
reverse direction to removal.
7. Replacement or Cleaning Procedures of Chuc
7-1 Removal of Chuck
1) Remove the cartridge with a bur or dummy bur as it is
installed. (6.Replacement Procedures of Cartridge)
Fig. 6
2) Hold the rotor with two fingers as shown on the Fig.11.
Mount the wrench provided on the rotor nut located on
the top of rotor shaft and turn counterclockwise.
(Either side of wrench can be used.)
Fig. 7
Chuck Release Ring
5
Fig. 8
Fig. 9
Fig.10
Fig.11