Morita TWINPOWERTURBINE 4H User manual

4H
Operation 1/2 2018-05-21 Pub. No.: H640-62001-502
TWINPOWER TURBINE 4H
Operation Instructions
Air-Turbine Handpiece
For direct connection to MORITA 4H couplings
PAR-4HEX-O, PAR-4HX-O, PAR-4HUEX-O, PAR-4HUMX-O
Cap
Cap Screw
Notch
Push Button Body
Head Aeroskirt
Light Guide
Spray Hole
Handpiece Connection
TWINPOWER TURBINE 4H (PAR-4H*-O)
*MORITA 4H coupling Models
Type
PAR-4HEX-O PAR-4HX-O PAR-4HUEX-O PAR-4HUMX-O
Bearing Ball bearing
Chuck Push chuck
Cartridge Capsule cartridge Rotor cartridge
Air Pressure [MPa] (at handpiece end) 0.20 – 0.29
Recommended Air Pressure [MPa]
(at handpiece end) 0.23 – 0.25
Water Pressure [MPa] (at handpiece end) 0.05 – 0.20
Tip Air Pressure [MPa] (at handpiece end) 0.20 minimum
Exhaust Pressure [MPa] (at handpiece end) 0.03 maximum
Speed [rpm] (at 0.2 MPa air pressure) 370,000 ±30,000 350,000 ±30,000 370,000 ±30,000
Air Flow [NL/min] 60 maximum (when air pressure at handpiece connection is 0.29 MPa)
Spray Hole No. 3 1
Length [mm] 110
Weight [g] 50
Head Diameter [mm] 10.5 12 9
Head Height [mm] 13.2 12.7 10.6
Usable Bur Shank Diameter [mm] 1.59 – 1.60
Usable Bur Shank Length [mm]*2 10 and over 7.5 and over
Usable Bur Length [mm]*2 22 and under 20 and under
Tip Diameter [mm] 2.0 and under
1. Malfunction or damage resulting from repairs made by personnel not authorized by J. MORITA MFG. CORP.
2. Any unauthorized modifications to its products
3. Malfunction or damage resulting from maintenance or repairs carried out using parts or components other than those specified
by J. MORITA MFG. CORP.
4. Malfunction of or damage to Morita products caused by products made by other manufacturers unless they were supplied by J.
MORITA MFG. CORP.
5. Malfunction or damage resulting from failure to observe the safety precautions or operating procedures described in these
Operating Instructions
6. Malfunction or damage resulting from ambient conditions that do not conform to the operating conditions specified in these
Operating Instructions, such as an improper electrical power supply or installation environment
7. Malfunction or damage resulting from a natural disaster, such as a fire, earthquake, flood or lightning
* Replacement parts and consumable parts are described in the Regular Inspection List. Replace parts as necessary based on the
degree of wear and length of use.
J. MORITA MFG. CORP. maintains supplies of service parts for 10 years after discontinuation of their production.
For the duration of this period, we will supply replacement parts and be able to repair the product.
J. MORITA MFG. CORP. will not be responsible for the following matters, even during the warranty period.
Disclaimer
Standards and Procedures for the Disposal of Medical Devices
If there is a possibility that a medical device is contaminated, the dentist or doctor responsible for the patient's treatment must
confirm that it is uncontaminated, and must then have it disposed of by a healthcare facility or an agent licensed and qualified to
handle standard industrial waste and industrial waste requiring special treatment.
Maintenance and Inspection
Service and other Contacts
* This instrument should be inspected every 3 months in accordance with the Regular Inspection List.
* Maintenance and inspection are generally consider to be the duty and obligation of the user, but if, for some reason, the user is
unable to carry out these duties, he may rely on a qualified medical device serviceman. Contact your local dealer or J. MORITA
OFFICE for details.
* For repairs, contact J. MORITA OFFICE or your local dealer.
Regular Inspection List
Item Procedure
Chuck Gripping Strength Use the Chuck Grip Tester to check the chuck’s gripping strength.
Replace the Cartridge if the chuck has lost its gripping strength.
Cap Tightness Make sure that the cap and the cap screw are tightened properly.
Rotation and Spray Make sure the instrument operates smoothly and emits a fine, misty spray.
Light Guide Make sure the light guide is not chipped, cracked or sticking out.
TWINPOWER TURBINE may be repaired and serviced by
For repairs or other types of service, contact your local dealer or J. MORITA OFFICE.
• the technicians of J. MORITA's subsidiaries all over the world.
• technicians employed by authorized J. MORITA dealers and specially trained by J. MORITA.
• independent technicians specially trained and authorized by J. MORITA.
[Specifications may be changed without notice due to improvements.]
Specifications
Parts Identification
Use burs that conform to ISO 1797-1.*1
Using dirty shanks will cause the chuck to lose its gripping power and accelerate wear on the burs or points.
Some bur detergents contain components that cause metals to rust. Be sure to wash away the bur detergent before
inserting the bur into the chuck. If any bur detergent enters the chuck, the cartridge and chuck will malfunction.
Diamond points bend easily. Even a new bur or point may not have good rotational balance and they may make an
extremely loud metallic sound when rotating. In such cases, stop using the bur as it is defective.
• When using welded or blazed burs, ensure that the bur tip does not wobble.
• Be sure to follow the requirements regarding the usable bur length and the shank length. Using non-support-
ed burs is dangerous as they may become detached and cause a malfunction.
*1 If any bur detergent, dust, or other foreign matter enters the chuck, contact your local dealer or J. MORITA OFFICE to request
an inspection.
*2 Use miniature burs or short-shanked burs for PAR-4HUMX-O. Do not use miniature burs or short-shanked burs for any other
type of handpiece.
Burs
• Never use the types of burs or points described below. Using such burs or points is extremely dangerous as
they may become detached and cause injury to the patient's oral cavity or be swallowed by the patient.
Burs or points that do not conform to ISO standards; that have any grooves, scratched or damaged blades or
shanks; that are deformed, bent, rusty, chipped or broken; or that have been modified (such as short-shanked burs).
Do not force the bur in with-
out holding down the push
button. Doing so will damage
the bur and the chuck.
* The handpiece is not sterilized before shipping. It must be autoclaved before it is used for the first time.
Pre-use inspection: Check for the following before using the handpiece.
• The cap and cap screw have been tightened properly.
• There are no gaps between the connection parts of the cap, head, and body
and no rattling can be heard.
• There are no cracks, chips, protrusions or dents on the light guide.
• There are no rust, scratches or dirt.
• The handpiece rotates smoothly and does not slow down, there is no abnormal
vibration or noise, the head, push button or cap does not heat up.
• The spray has a fine, misty quality and is emitted from all of the spray holes.
1. Before Use
If an abnormality is found, refrain from using the handpiece and have it profession-
ally repaired.
• Before connecting the handpiece, make sure the lamp cover and connection end are not loose, worn, or
damaged.
• Before using the handpiece, always try operating it outside the oral cavity first to ensure that it is securely
attached to the tube or the coupling. If it is not securely attached, the tube could become detached and
cause physical injury.
Handle the handpiece carefully. Do not drop it, bang it against the dental treatment unit, etc. Doing so could result
in abnormal rotation or, in the event of damage to the light guide, reduced illumination.
Ensure that the handpiece connection or coupling is free of dust and other foreign matter (fiber such as cotton, O-
ring pieces, etc.). Failure to do so could result in damage to the handpiece.
2. Attaching the Handpiece
3. Inserting Burs
Take care to insert the bur straight
all the way in.
Insert the bur completely.
Hold down the push button firmly, push the bur all the way in, and then re-
lease the push button.
* It is easier to press the push button if you support the body of the hand-
piece with your forefinger positioned at a point between the head and the
body.
Insert Insert
Hold down the
push button.
Make sure the cap
screw is in place.
Cap
• Insert the burs and points as far as they will go into the chuck.
• Before using the handpiece, try operating it outside the oral cavity first to ensure that the bur or point does
not wobble, there is no abnormal vibration or noise, and no heat is generated.
• If the bur or point is not completely inserted or an abnormal bur or point is used, the bur or point may be-
come detached and be swallowed by or cause physical harm to the patient.
• Wait until rotation stops completely before inserting or removing bur or point.
If the bur gets stuck in the handpiece, do not forcibly remove it using pliers or other tools; have it repaired instead.
If excessive force is applied, the chuck may become damaged.
Crown removal and similar operations produce considerable vibration, which can result in the bur getting stuck in the
handpiece. Avoid this by stopping at regular intervals to remove and reinsert the bur, rather than drilling continuously.
• Exercise caution when inserting or removing the bur or point so as not to injure your fingers.
• If you notice any abnormal noise or vibration during use, replace the bur or point with a new one and then
try operating the handpiece to check if the problem has been resolved.
• Always wear personal protective equipment (PPE), such as safety glasses, gloves, etc. when using this
handpiece.
• Be sure to remove the bur or point when storing the handpiece in the dental treatment unit. Storing the
handpiece with the bur or point attached could result in physical injury or property damage.
Make sure cap is not loose.
• If the cap or the cap screw are loose or if they are damaged or worn, the cap or the cartridge could fly off in-
side the oral cavity and cause an injury.
Warnings and Cautions
• In cases of tooth extractions, split teeth, endodontic treatment etc. or incision or open wounds in soft tis-
sue, care must be taken that air emitted from the handpiece does not cause a subcutaneous emphysema.
• If the bur or point becomes detached while you are drilling a tooth, stop using the instrument immediately.
• When removing tooth decay, never apply force in a direction that could result in the bur or point becoming
detached (scooping up) or apply excessive force.
• Always spray water while using the handpiece to avoid injury to the dental pulp.
• Wait until the bur stops rotating before placing the handpiece inside the patient's oral cavity or removing it.
• Avoid operating the handpiece in the following ways as doing so could cause the head, push button and cap
to heat up, resulting in burns to the patient.
• Holding down the push button while the handpiece is in operation.
• Operating the handpiece with the push button pressing against the teeth opposite the working area
when the patient's mouth is not fully open.
• Operating the handpiece when abnormal rotation or vibration is suspected.
* Refer to the user manual for the CP4-(W-)O, CP4-(W-)LD couplings.
CAUTION
CAUTION
CAUTION
* Do not expose the handpiece to direct sunlight for an extended period of time.
* If the handpiece will not be used for an extended period of time, store it in a clean, dry place after autoclaving it.
* The useful life of the TWINPOWER TURBINE 4H is 4 years (based on self-certification) from the date of shipment
provided it is regularly and properly inspected and maintained. The useful life for the cartridges is 1 year.
CAUTION
The user (e.g., healthcare facility, hospital, clinic, etc.) is responsible for supervising the use and maintenance of medical devices.
This instrument must not be used by anyone other than a dentist, doctor or other legally qualified professional.
This instrument must not be used for any purpose other than the provision of dental treatment.
Federal law restricts this device to sale by or on the order of a dentist (for U.S.A.).
The following symbols and expressions indicate the degree of danger and harm that could result from ignoring the instructions
they accompany:
This warns the user of the possibility of serious injury or death to the patient, damage or complete
destruction of the instrument or other valuable property, and fire.
This warns the user of the possibility of slight or moderate injury to the patient.
This alerts the user of important points concerning operation of the instrument or the risk of dam-
age to it.
Thank you for purchasing the TWINPOWER TURBINE 4H handpiece.
This instrument transduces compressed air into rotational power and transfers it to a bur or point, which is attached onto
the head of the instrument to cut and polish teeth or artificial dentures.
In order to utilize the instrument's functions fully and ensure its safe and effective use, read this manual thoroughly be-
fore using the instrument and pay close attention to the operating procedures and precautions. Keep this manual at hand
for quick reference.
Use this instrument with dental treatment units that conform to IEC 60601-1.
Operating,Transport and Storage Environments
Atmospheric pressure
limitation
GS1 DataMatrix
Symbols
CE(0197) marking
Conforms with the European
Directive, 93/42/EEC.
CE marking
Conforms with the European
Directive, 2011/65/EU.
EU Authorized
Representative under the
European Directive 93/42/
EEC
Autoclavable up to 135°C
(275°F)
Supports high-temperature
cleaning and disinfection.
Manufacturer Date of manufacture
Temperature limitation
Refer to instructions for
use
Humidity limitation
Serial Number
E.g., G00001
E.g., H640G00001T
Year of Manufacture
(G: 2018, H: 2019...)
4H Spray Nozzle Set
Code No. 5010307
Chuck Grip Tester
(yellow-green)
Code No. 5010695
Spray Hole Wire
Code No. 5250940
(Autoclavable)
CapTool
Code No. 5011328
Phillips Screwdriver
Code No. 5011440
AR SPRAY
Code No. 5010216
or 5010212
MORITA MULTI SPRAY
Code No. 7914113
or 5010201
(Ethanol disinfectable)
(Ethanol disinfectable) (Ethanol disinfectable)
(Ethanol disinfectable)
(Ethanol disinfectable)
Accessories Sold Separately
Maintenance Kit for 4H Code No.1831130
[Some symbols may not be used.]
1
1
1
Operating Temperature: +10°C to +40°C (+50°F to +104°F); Humidity: 30% to 75% (without condensation);
Atmospheric Pressure: 70 kPa to 106 kPa
Transport and Storage Temperature: -10 °C to +70°C (+14°F to +158°F); Humidity: 10% to 85% (without condensation);
Atmospheric pressure: 70 kPa to 106 kPa

Chuck Spray Nozzle
Lever
2018.054,000PrintedinJapan
K
Operation 2/2 2018-05-21 Pub. No.: H640-62001-502
Spray Hole Wire Syringe Nozzle
Light Guide Light Guide
24 Months
* Replace parts as necessary based on the degree of wear and length of use.
* Order parts from your local dealer or J. MORITA OFFICE.
Be sure to follow the procedure below when performing daily maintenance.
Disinfection
Clean the spray hole with the
spray hole wire provided.
Disconnect the handpiece from the tube.
Clean off the cutting debris in running wa-
ter with a soft brush and then wipe off the
water.
Gently wipe the light guide with a
cotton swab.
Wipe the entire handpiece with a piece of
gauze dampened with Ethanol for Disin-
fection (ethanol 70 to 80 vol%).
Put a little ethanol on a cotton
swab and stick it in the connec-
tion end of the handpiece.
Lightly wipe the light guide with it.
If a medical agent being used for the treatment has adhered to the handpiece, wash it off in running water.
Do not use any cleaning agent other than Ethanol for Disinfection (ethanol 70 to 80 vol%). If too much Ethanol for
Disinfection is applied to the piece of gauze or cotton swab, it will seep into the handpiece and cause a malfunction.
If dust or other impurities enter the handpiece, they may cause poor rotation or poor spray delivery.
Do not clean the handpiece ultrasonically.
Do not immerse the handpiece in or wipe it with any of the following: functional water (acidic electrolyzed water,
strong alkaline solution, and ozone water), medical agents (glutaral, etc.), or any other special types of water
or commercial cleaning liquids. Such liquids may result in metal corrosion and adhesion of the residual medical
agent to the handpiece.
Push the lever on the spray nozzle up in the direction of
the arrow.
Cover the head of the handpiece with gauze, insert the
chuck spray nozzle tip into the bur hole, and then spray for
2 seconds.
Connect the handpiece to its tube.
Operate the handpiece for at least 15 seconds to expel excess lubricant
from the head and then wipe it off with a piece of gauze.
Disconnect the handpiece from the tube.
Chuck Grip Test
Groove
Chuck grip is normal
Stop pulling as soon as you
see the groove, and slowly
return the tester piece to its
original position.
Hold down the push button
firmly and pull the tester out
straight.
Chuck grip is weakened
If you see a groove If you do not see a groove and the tester comes out
Take care to insert the tester straight
all the way in.
Hold down the push button firmly,
push the tester all the way in, and
then release the push button.
Pull the tester slowly until you see
a groove.
Packing
Inspection
Place the handpiece in a sterilization pouch.
Sterilization
• To prevent the spread of serious, life-threatening infections such as HIV and hepatitis B,
the handpiece must be autoclaved after each patient's treatment has been completed.
• Instruments are extremely hot after autoclaving; do not touch them until they cool off.
Do not sterilize the handpiece by any method other than autoclaving.
Remove the bur or point before autoclaving.
Failure to clean and lubricate the handpiece before autoclaving will lead to a malfunction of the handpiece.
The sterilization and drying temperatures must not exceed 135°C (275°F). A drying temperature in excess of
135°C (275°F) will result in contamination of the handpiece or cause it to malfunction.
When autoclaving the handpiece, do not let it come into contact with the heat source or the body of the auto-
clave to avoid damage to the O-rings or other parts due to the high temperature. When autoclaving the handpiece
in an upright position, make sure that it is placed in the autoclave with its head at the top.
Do not leave the handpiece in the autoclave.
6. Replacement Parts
Replacing Cartridges
* For details on replacing the cartridge, refer to the manual accompanying the replacement cartridge.
In the event of any of the following circumstances, replace the cartridge or have it repaired: problems with regard to
insertion, removal or retention of the bur or point; poor rotation; bur wobble; heat generation; or noise.
Capsule cartridge Rotor cartridge
PAR-4HEX-O PAR-4HX-O PAR-4HUEX-O PAR-4HUMX-O
Code No. 5010862 Code No. 5010863 Code No. 5011147 Code No. 5011148
A dedicated replacement tool is included.
Insert
Insert
Pull
Chuck Grip
Tester
Hold down the
push button.
Cap (including O-ring and screw)
PAR-4HEX-O PAR-4HX-O PAR-4HUEX-O
PAR-4HUMX-O
Code No. 5011387 Code No. 5011386 Code No. 5011161
TERMS AND CONDITIONS
J. MORITA MFG. CORP. warrants the Product as follows:
1. Warranty Term.
J. MORITA MFG. CORP. warrants that the Product will be free from defects in materials and workmanship for 24 months.
2. Items Not Covered byWarranty.
This Warranty will not cover parts of the Product or consumables which normally need to be replaced such as glass or rubber compo-
nents, lamps, cartridge, ball bearings and the like. Further, this warranty will not cover defects or damage caused by:
a. Failure to operate or use the Product in accordance with the Operation Instructions or warning/cautionary labels.
b. Modifications of the Product, connecting the Product to other products, or using components or replacement parts not specified
or approved by J. MORITA MFG. CORP.
c. Repairs performed by parties not designated by J. MORITA MFG. CORP.
d. Accidents or forces outside of J. MORITA MFG. CORP.’s control, such as dropping the Product or collision of the Product with
other objects, fire, flood, natural disaster, etc.
e. Use or operation of the Product in settings or under conditions not specified by J. MORITA MFG. CORP. or set forth in the
Operation Instructions including, without limitation, unauthorized changes in equipment settings, connection to unauthorized
devices.
3. Remedies of Customer.
Customer must present this Warranty when claiming coverage or application thereof, and either ship or deliver the Product to an
authorized location of J. MORITA MFG. CORP. or its subsidiaries or authorized dealers. Upon receipt and verification of this Warranty,
inspection of the Product, and determination of coverage by this Warranty, J. MORITA MFG. CORP. will, at its sole option, supply the
parts or components either replaced or repaired free of charge to the Customer. Delivery and shipping charges are the responsibility
of the Customer.
4. LIMITATIONS AND EXCLUSIONS FROM WARRANTY.
The remedy set forth in paragraph 3 is the sole and exclusive remedy of Customer. J. MORITA MFG. CORP. MAKES NO OTHER
EXPRESS OR IMPLIED WARRANTIES AND SPECIFICALLY EXCLUDES ALL OTHER WARRANTIES INCLUDING, WITHOUT LIMITA-
TION, ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL J.
MORITA MFG. CORP. BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL, DIRECT OR INDIRECT, OR SPECIAL DAMAGES
OF ANY KIND INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF REVENUE, LOSS OF BUSINESS OR BUSINESS
OPPORTUNITY, OR OTHER SIMILAR FINANCIAL LOSS ARISING OUT OF THE PERFORMANCE, USE OR INTERRUPTED USE OF
THE PRODUCT.
5. Repairs Not Covered by Warranty.
With respect to repairs not within the period of this Warranty or otherwise not covered by this Warranty, J. MORITA MFG. CORP. will
perform the same, timely, efficiently, and for an appropriate cost.
4. After Use
Be sure to remove the bur or point from the handpiece after use. If the bur or point is left in the handpiece, it may get stuck.
Cleaning
Cleaning
Disinfection Lubrication Inspection Sterilization
Packing
• Do not point the spray can at anyone.
• Do not use the spray in a closed space without proper ventilation. Open windows and turn on exhaust
fans to make sure the room is well ventilated.
• Do not get the spray in your eyes. If you accidentally get it in your eyes, wash your eyes with plenty of wa-
ter and see a doctor.
• Do not get the spray on your skin. If it gets on your skin, wash it off with soap and water.
• If used in a sink or other enclosed space, a flammable mist could permeate the air; keep the area free of
open flames or other ignition sources.
7. Troubleshooting
If the handpiece does not seem to be working properly, the user should first inspect the locations described below.
For repairs, contact your local dealer or J. MORITA OFFICE.
◆Poor water delivery
If no water is coming out of the spray hole
Disconnect the handpiece from the coupling or the tube and operate the foot control. If water comes out of the
tube, have the handpiece repaired.
If a spray hole does not emit water
Clean the spray hole with the wire provided. If the spray hole still does not emit water, check the O-rings on the
coupling or the tube. In addition, check the water volume control for the coupling or the dental treatment unit.
If water is not emitted as a spray
Have the handpiece repaired.
◆Poor rotation
If air is coming out of the head
After cleaning the handpiece with the spray, attach an unused bur and check again to see if the problem has
been resolved. If abnormal rotation is still observed, replace the cartridge.
If air is not coming out of the head
Disconnect the handpiece from the coupling or the tube and operate the foot control. If air comes out of the
tube, have the handpiece repaired.
Never use any spray other than the AR SPRAY or MORITA MULTI SPRAY.
Use the spray nozzle designed for the handpiece connection.
Always hold the can in an upright position.
Failure to lubricate the handpiece will result in a malfunction.
Insert the spray nozzle tip straight into the bur hole. If the spray nozzle tip is not
inserted straight, it may become damaged.
In order to maintain the performance of the handpiece, make sure that you spray
lubricant both at the handpiece connection and in the bur hole.
When wiping off excess oil from the head, make sure that you do not touch the
push button while the handpiece is running. Doing so will result in wear to the
cap and cartridge, making insertion and removal of the bur difficult.
After cleaning, use the syringe or an air
blow gun to get rid of any moisture left
inside the handpiece.
Unit Name Mode Detergent
(concentration)
Neutralizer*
(concentration)
Rinse
(concentration)
Miele G7881 Vario TD neodisher MediClean
(0.3 – 0.5%)
neodisher Z
(0.1 – 0.2%)
neodisher Mielclear
(0.02 – 0.04%)
* After cleaning there may be streaks or white spots on the instrument.
Use a neutralizer only if there are streaks or white spots.
* When using a high-temperature washer-disinfector to clean the handpiece, strictly adhere to the condi-
tions specified below.
High-temperature cleaning conditions
Operating conditions for high-temperature washer-disinfectors
Operating Precautions
• Always use a handpiece holder when washing the handpiece, making sure to rinse the inside of the handpiece thor-
oughly.
• For details on handling medical agents or adjusting their concentration, refer to the user manual for the washing
device.
• After washing is complete, check to see if the handpiece, including its inside, is completely dry. If any water re-
mains inside the handpiece, expel it with an air gun or another such tool. Failure to do so could result in the remain-
ing water coming out during use and cause poor lubrication or sterilization.
• Always lubricate the handpiece after washing.
Lubrication
Before autoclaving, make sure that you lubricate and clean the handpiece with the AR SPRAY or MORITA MULTI
SPRAY.
Always use a handpiece holder when washing the handpiece; otherwise any medical agent remains inside the
handpiece, it may corrode or clog the air or water pipe, resulting in a malfunction of the handpiece.
Inappropriate cleaning methods and solutions will damage the handpiece.
Do not clean the handpiece using strong acidic or alkaline solutions that could cause the metal to corrode.
Any moisture left inside the handpiece could result in the remaining water coming out during use and cause cor-
rosion, or poor lubrication and sterilization.
Do not leave a handpiece inside the high-temperature washer-disinfector.
Push the lever on the spray nozzle down in the direction
of the arrow.
Insert the nozzle into the connection end of the hand-
piece, hold it firmly and then spray for 2 seconds.
• Weakening of the chuck grip could result in a bur or point causing injury to the patient's oral cavity or in a
bur or point being swallowed by the patient. Test the chuck grip when you sense it is weakened or at least
once a day.
Lubricate the chuck, and then
recheck the chuck grip.
If the chuck still does not pass
the test, replace the cartridge.
Autoclave the handpiece. After the autoclaving, store the handpiece in a dry environment.
Recommended autoclaving conditions: 134°C (273.2°F) in a sterilization pouch for at least 5 minutes
Minimum drying time after sterilization: 10 minutes
CAUTION
◆Cannot insert burs or points / Chuck grip is weakened
Lubricate the chuck and then reinsert an unused bur to check if the problem has been resolved. If this does not resolve
the problem, replace the cartridge (as well as the cap if necessary).
5. Daily Maintenance and Inspection
Do not use any sterile pouches that contain hydrosoluble adhesive
ingredients such as PVA (polyvinyl alcohol). Otherwise, its adhesive
ingredient may elute, seep inside the handpiece during the steriliza-
tion, resulting in a solid residue and a failure to rotate properly.
◆Handpiece does not rotate after autoclaving
Manually rotate the bur inserted into the handpiece. If the bur rotates, the cause of the problem may be caked adhesive in-
gredient inside the handpiece, which seeped from sterile pouches during sterilization. Clean the inside of the handpiece with
a high-temperature washer-disinfector.If this does not resolve the problem, have the handpiece repaired.