NSK PRESTO AQUA II User manual

1
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English

2
PRESTO AQUA II Control Unit
Filter Inspection Window
Pressure Gauge
Regulator Knob
Chip Air Adjustment Knob
Water Adjustment Knob
Water ON/OFF Switch
Water Supply Bottle
Handpiece Connector
1
2
3
4
5
6
7
8
9
Hose Stopper
Water Connector
Plumbing Connector
Bur-inserting Wrench
Rotor Shaft Nut Wrench
Air Supply Connector
Chuck Release Ring
Cartridge
Cartridge retainer
4
11
16 17 20 21
12 13 14 15
10 5 6 7 8 9321
22
23
24
18
19
25
26
27
1. Name of Each Portion
2. Specifications
Water Filter Set
Foot Pedal
Plumbing Hose
PRESTO AQUA Handpiece
Coupling Joint
Handpiece Hose
Bottle Attaching/Detaching Switch
Water Mode Select Switch
Foot Pedal Connector
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
Speed
Proper Air Supply Pressure
Handpiece Dimensions
Handpiece Weight
Control Unit Dimensions
Control Unit Weight
320,000min-1
0.25~0.3MPa
ø16.6(D) X 136.6(H) mm
104g (including coupling joint)
W235 X D139 X H182 (mm)
1.9kg

English
3
Plumbing Connector
Plumbing Hose
White Ring
Plumbing Connector
Plumbing Hose
Hose Stopper
Foot Pedal Connector
Hose Stopper
Foot Pedal Connector
White Ring
3-1 Installation of Plumbing Hose
Push the plumbing hose into the plumbing connector
located at the regulator on the left-hand side of the
control unit until it is securely set to make connection as
shown in Fig. 1. Check if the hose is securely installed by
slightly tugging it after connection. Connect the other end
of the plumbing hose to the air line. At this time, use the
attached connector if necessary.
3-2 Installation of Foot Pedal
Loosen and remove the hose stoppers (two) from the foot
pedal connectors on the back of the control unit, and
insert them into the foot pedal hoses. At this time, insert
the hose stoppers so that their screws come outside
(control unit side).
Insert the "1"-marked end of each hose according to the
instructions on the label. After insertion of both hoses,
securely tighten the hose stoppers (Fig.2).
3. Installation Procedures of Each Portion
Fig. 2
3-3 Installation of Handpiece
Install the handpiece hose to the handpiece connector on
the front face of the unit (Fig.3).
Install the handpiece hose to the coupling joint (Fig.4).
And then, install the handpiece by pulling the ring of the
coupling joint (Fig.5).
Fig. 3
Fig. 5Fig. 4
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CAUTION
Fig. 1

Bleeder Button
Packing
Water Supply Bottle Cap
2
3
1
Water Supply BottleWater Supply Bottle
4
Bottle Attaching/Detaching SwitchBottle Attaching/Detaching Switch
1
2
Water Supply BottleWater Supply Bottle
3-4 Installation and Removal of Water Supply Bottle
<Installation>
Push in the bottle attaching/detaching switch on the back
of the control unit until it is locked (Fig. 6). Insert the
water supply bottle from above, and push it in until the
bottle attaching/detaching switch returns properly. Check
to see if the water supply bottle is securely installed by
pulling it upward.
Fig. 6
<Removal>
Holding the water supply bottle, push in the bottle attaching/detaching switch until it is locked, and as it is pushed in, while
holding the control unit, pull out the water supply bottle upward (Fig.7).
Fig. 7
3-5 Installation and Removal of the Water Supply Bottle Cap
<Installation>
Check the packing inside the water supply bottle cap for misalignment or detachment, and then close the water supply
bottle cap (Fig.8).
<Removal>
Before opening the water supply bottle cap, be sure to press the bleeder button to release the pressure in the water
supply bottle (Fig. 9). Check that the pressure is completely released, and then open the water supply bottle cap.
Fig. 9Fig. 8
Check to see if the bottle attaching/detaching switch has returned properly and the water supply bottle is securely
installed. Otherwise, water and air may leak, and the water supply bottle may pop out.
CAUTION
After use, if water is low in the water supply bottle,
the water supply bottle may pop out; therefore, the
bottle attaching/detaching switch should be
pressed as the water supply bottle is held.
CAUTION

English
Water Mode Select Switch
Use of Water Supply Bottle
Use of City Water
Water Mode Select Switch
Use of Water Supply Bottle
Use of City Water
5
4-1 Set the Drive Air Pressure
Supply air, and adjust to 0.3MPa by pulling the regulator knob upward and turning.
When adjustment is made, push the knob down to lock.
4-3 Operation
Stepping on the foot pedal starts rotation. If the water ON/OFF switch is set to the ON side, water supply is also started.
4-4 Adjustment of the Amount of Water Supplied (When water supply is used)
Check the amount of water supplied, and adjust the amount of water supplied with the water adjustment knob.
4-2 Set the Water Supply
For use with water supplied, set the water ON/OFF switch
to the ON side.
<Use of Water Supply Bottle>
Push the water mode select switch until it stops (Fig.11).
<Use of City Water>
Pull the water mode select switch until it stops (Fig. 11).
Open the main cock of the tap water.
3-6 Installation and Removal of Water Filter Set (Use of City Water)
Push the hose of the water filter set (the side of the water
filter with a case) into the tap water connector on the
back of the control unit until it is securely set to make
connection as shown in Fig. 10. Check if the hose is
securely installed by slightly tugging it after connection.
Connect the other end of the hose to the tap water line.
4. Operational Procedures of Control Unit
Fig. 11
Fig. 10
Properly set the water mode select switch because if it is stopped at an intermediate position, air is released
structurally.
CAUTION
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changes in the amount of water supplied; therefore, adjustment should be made in each case.
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hose, and could result in a slow start of water flow. In this case, turn the water on full blast and adjust the water
volume as you like.
CAUTION
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water connector until it is securely set. Otherwise,
water may leak.
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gently remove the tube.
CAUTION Water Filter Case
Hose
Water Connector
White RingWhite Ring

Positioning hole
Pipe for water and chips
Positioning pin
6
Chuck Release Ring
Pipe for water and chips
Positioning pin
Positioning hole
1) As the chuck of the PRESTO AQUA handpiece is a push-in type, set FG
burs of ø1.6mm and push in as shown in Fig.12
Push in the bur of which the end is tapered by using the designated
bur-inserting wrench as shown in Fig.13.
2) When removing the bur, it can be removed by turning the chuck release
ring in the direction of the arrow in Fig.14.
4-5 Adjustment of chip air (When water supply is used)
Check the spraying condition, and adjust the amount of chip air with the chip air adjustment knob.
Increasing the chip air results in a mist state, and decreasing it results in a straight-line state.
4-6 For Finishing Work
After completion of operation, close the main air cock.
<Use of City Water>
Close the main cock of the tap water.
5. Operational Procedures of Handpiece
1) Loosen the cartridge retainer by turning it, in the direction shown in Fig.15.
2) Hold the bur and pull out the cartridge toward the front. (Fig.16) At this time, the O-ring placed on the rear bearing may
remain in the body. Make sure to remove the O-ring.
Before inserting a new cartridge, clean the head interior.
3) When mounting a new cartridge, align the position of the
pipe for water and chips, and the positioning pin with the
hole of the nose hood of the cartridge and push in straight
(Fig.17).
4) Finally, tighten the cartridge retainer securely.
6. Replacement Procedures of Cartridge
Fig. 15
Fig. 17Fig. 16
Fig. 14Fig. 13
Fig. 12

English
7
Guide-bush
Test bur
Test bur
Chuck Guide-bush
7-1 Removal of Chuck
1) Remove the cartridge with a bur or dummy bur as it is
being installed (6.Replacement Procedures of
Cartridge).
2) Hold the rotor with two fingers as shown in Fig.18.
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.).
3) When the rotor nut is loose, push out the chuck
carefully with the dummy bur or the shank of the bur
from the back of the cartridge, the Guide-bush and the
chuck will come out (Fig.19).
7-2 Installation of a New Chuck
1) Apply oil thinly on the surface of the new chuck or the
chuck after cleaning, insert the test bur and push into
the rotor shaft (Fig.20).
2) Set the longer one of the guides of the guide bush on
the end of the rotor shaft first along the test bur
(Fig.21).
3) Finally insert the rotor shaft nut along the test bur, and
firmly tighten it with a wrench while holding the rotor
(Fig.22).
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and clean thoroughly.
7. Replacement or Cleaning Procedures of Chuck
Fig. 20
Fig. 21
Fig. 22
Fig. 18
Fig. 19
As the Guide-bush is a very small part, be careful not to lose it.
CAUTION
Remove the chuck and clean once a week.
NOTICE

8
O-ring
Water Filter
Control Unit Side
Water Filter CaseWater Filter Case
O-ring
8-1 Draining the filter
Check the filter bowl from the filter inspection window,
and if there is an accumulation of water, insert fingers
from the bottom, and turn the drain cock in the direction
of the arrow to drain water from the filter (Fig. 23). After
draining, securely tighten the drain cock by turning it in
the reverse direction.
8-2 Changing O-ring (Use of Water Supply Bottle)
Remove the two O-rings at the bottle joint with a pointed
tool, and mount a new nose into the grooves (Fig.24).
* Optional O-ring : Order Code Y900327
8-3 Changing Water Filter (Use of City Water)
1) Close the water valve of the dental unit to which
PRESTO AQUA II is connected. Mount two (5x8)
spanner wrenches as shown in Fig.25, and turn in the
direction shown. When the water tube becomes twisted
as a result of this, relieve the twisting by turning it, as
its end on the control unit side is free to turn.
2) When the water filter case is separated, the water filter
can be removed as shown in Fig.26.Replace with a
new one and reassemble the filter in the reverse order
(Fig.26).
* Water Filter : Order Code U387042
8. Maintenance of Unit
9. Optional Accessories
Fig. 23
Fig. 24
Fig. 25
Fig. 26
Assemble the water filter in the correct direction as
shown in Fig.26.
CAUTION
DescriptionOrder Code
O-ring set (2 pcs.)
Water Filter
Wall Hanging Bracket Set
Y900327
U387042
Z308060

9
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