Morita TorqTech ST-DH Series User manual

ST
Maintenance and Inspection
* This instrument should be inspected every 3 months in accordance with the inspection items listed below.
* 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. Inspect the following items: 1. Motor connection. 2. Bur and point insertion. 3. Handpiece rotation and spray.
4. Overheating.
* For repairs, contact your local dealer or J. MORITA OFFICE.
Service and Contacts
TORQTECH 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.
• Wear safety glasses to prevent injury to your eyes.
• Never switch rotation direction from forward to reverse or vice versa while the motor is actually running.
• Remove burs and points before returning the handpiece to its holder in the dental treatment unit;
otherwise, there is a risk of injury or damage.
• Crown removal and other similar operations produce considerable vibration and can cause the bur to
get stuck in the handpiece. Avoid this by frequently taking the bur out and putting it back in again. If
a bur gets stuck, do not try to take it out with a pair of pliers or other forceful means; this could dam-
age the chuck and create a risk of a bur coming out during operation. Contact J. MORITA OFFICE
and have the handpiece repaired.
• If the handpiece makes abnormal noise or vibrates too much take out the bur or point, and replace it
with a new one. If the same problem persists, have the handpiece repaired.
• Follow all recommendations of the bur manufacturer concerning bur rotation speed and direction.
Parts Identification
Joint
* The TORQTECH is not sterilized before shipping. It must be autoclaved before it is used for the first time.
• No conspicuous corrosion around the chuck opening
• No dirt or scratches etc. on the joint
• No bent or deformed components
• Motor connects properly and securely. Motor runs smoothly when foot control is depressed. Spray is emitted nor-
mally. No air or water leakage from motor joint. No abnoraml noise or vibration. No overheat.
1. Before Use
Push the handpiece straight onto the motor’s connection cylinder until
you hear it snap into place.
* Refer to the user manual for the motor.
* Make sure the O-rings on the motor’s connection cylinder are OK.
Do not connect the handpiece to a motor that rotates faster than 40,000 rpm.
Check that there is no dust or other debris on the motor's connection cylinder. The handpiece might malfunction if
there is.
Do not expose the handpiece to strong physical shocks such as by dropping it or swinging it against the dental
treatment unit when it is connect to its tube. This could impair rotation performance.
• Give the handpiece a light tug before using it to make sure it is securely connected.
• Wait for the motor to come to a complete stop before connecting or disconnecting the handpiece.
• Do not use any type of motor other than it conforms to ISO 14457.
2. Motor Connection
Pre-use inspection: Check for the following before using the handpiece.
If an abnormality is found, refrain from using the handpiece and have it professionally repaired.
• 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.
• Use burs and points with shanks that are at least 30 mm long. If the cutting tip touches the end of the at-
tachment, it could get too hot and burn the patient, or the attachment could be damaged.
*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.
[Specifications may be changed without notice due to improvements.]
Operation 1/2
• In cases of tooth extractions, split teeth, endodontic treatment etc. or incision or open wounds in
soft tissue, care must be taken that air emitted from the handpiece does not cause a subcutaneous
emphysema.
• Before use rotate outside of the oral cavity and check for bur or point wobble, abnormal noise or
vibration, proper rotation speed and direction etc. If something is wrong, do not use the handpiece
and have it repaired.
• If a bur or point comes out during use, stop using the handpiece immediately and have the hand-
piece repaired.
• Never use a bur or point to pull up on a metal crown or other metal piece. This is very dangerous;
the bur or point could come out and injure the patient or be swallowed.
• Never use the handpiece with no or too little cooling air; this could cause it to heat up and possibly
burn the doctor’s hand or the patient’s mouth.
• Always use spray and a soft (feather), intermittent touch to avoid injury to the pulp.
• Wait for the bur to stop rotating before taking the handpiece out of the oral cavity.
• To avoid cutting your finger etc., wait until the handpiece has completely stopped rotating before
inserting or removing a bur or point.
• Do not turn the lock sheath during use; the straight handpiece will rotate and pose a danger.
TORQTECH Operation Instructions
Straight Handpiece Attachment
ST-DH
Always use burs and points with clean shanks; dirty shanks cause the chuck to wear out more quickly and
lose its gripping power.
Some bur detergents contain components that cause metals to rust. Be sure to wash away the bur deter-
gent before inserting a bur or point into the chuck.
Diamond points are easily bent. Even new burs and points are sometimes poorly balanced: if a bur makes
a loud, metallic noise during rotation, stop using it.
Those which do not conform to ISO standards. Those with scratched or bent heads or shanks. Those
which are rusty, chipped or broken. Those which have been modified or altered such as those having
shortened shanks.
• When using welded or blazed burs or points, ensure that the bur tip does not wobble.
Use burs that conform to ISO 1797-1*1
StraightHandpiece Attachment
Type ST-DH
Rotation Speed Ratio 1 : 1
Maximum Motor Speed [rpm] 42,000
Length [mm] 83
Weight [g] 73
Usable Burs*1 Shank Type 2 (HP)
Chuck Type Mechanical Lock
Cooling Air Flow [NL/min] Minimum 6 (from motor)
Spray Flow [ml/min] Minimum 50 (for 0.2 MPa instrument pressure)
Tip Air Flow [NL/min] Minimum 1.5 (for 0.2 MPa instrument pressure)
Connection Type Conforms to ISO 3964 and DIN 13940
Connectable Motors Conforms to ISO 14457
Usable Bur Length [mm] Minimum 30
Usable Bur Diameter [mm] 2.334–2.350
Maximum Bur Length [mm] 44.5
Specifications
Lock Sheath
Identification Ring
(Blue: 1:1)
• Do not use if the body is deformed or damaged or if it is loose.
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.
* Motor usage and handling: Read all instruction materials thoroughly before use and follow all cautionary remarks and usage
instructions.
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
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.).
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.
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 a TORQTECH geared contra angle motor handpiece attachment.
This instrument is intended for drilling and polishing teeth and dental prosthetics. For optimum performance,
efficiency, avoiding hazards, preventing patient injury, and safety, read the instruction maul thoroughly before use,
and follow all cautionary remarks and usage instructions.
Keep this manual in a handy place for ready reference.
Warnings and Cautions
Use this instrument with dental treatment units that conform to IEC 60601-1.
* 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 TORQTECH is 7 years (based on self-certification) from the date of shipment provided it is
regularly and properly inspected and maintained.
Operating,Transport and Storage Environments
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
Symbols
Atmospheric pressure
limitation
GS1 DataMatrix
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., L101G00001T
Year of Manufacture
(G: 2018, H: 2019...)
1
1
1
[Some symbols may not be used.]
Accessories
(Autoclavable)(Ethanol disinfectable)
* For parts that wear out and need periodic replacement,
refer to the Inspection Items and replace parts when-
ever necessary.
Spray Nozzle
Code No. 5071343
Spray Hole Wire
Code No. 5250940
Sold separately
LS SPRAY
Code No.7927568 or 5071340
MORITA MULTI SPRAY
Code No.7914113 or 5010201
(Ethanol disinfectable)
2018-05-21 Pub. No.: L101-62001-501

2
3
1
2
24 Months
1
Do not use anything except ethanol. Do not use too much ethanol; it could seep inside and damage the handpiece.
Rotation and spray delivery will be impaired if debris gets inside the water or air lines.
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.
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
conditions 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
thoroughly.
• 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
remains inside the handpiece, expel it with an air gun or another such tool. Failure to do so could result in the
remaining water coming out during use and cause poor lubrication or sterilization.
• Always lubricate the handpiece after washing.
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
corrosion, or poor lubrication and sterilization.
Do not leave a handpiece inside the high-temperature washer-disinfector.
Failure to lubricate the handpiece will result in a malfunction.
Never use any spray other than the LS SPRAY or MORITA MULTI SPRAY.
The head could get quite cold if the spray is applied for more than 5 seconds. In this case, wait awhile
before operating the handpiece; otherwise the bearings could be damaged.
Always use the spray can in an upright position. Use only the special spray nozzle provided.
• 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 water 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.
• To prevent the spread of serious, life-threatening infections such as HIV and hepatitis B, the handpiece must be
autoclaved after finishing the treatment of each patient.
• 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 autoclave to
avoid damage to the O-rings or other parts due to the high temperature.
Do not leave the handpiece in the autoclave.
Place the handpiece in a sterilization pouch and autoclave it.
After autoclaving, store the handpiece in a dry environment.
* Autoclaving and drying temperatures must not exceed +135° C
(+275° F)
* Minimum drying time after sterilization: 10 minutes.
Recommended Temperature and Time:
In a sterilization pouch, minimum 6 minutes at +134°C (+273.2°F) or
minimum 60 minutes at +121°C (+249.8°F)
< Remove >
< Insert >
• Always insert burs and points all the way in and give them a light tug to make sure they will not come out.
Otherwise, a bur or point could come out and injure the patient or be swallowed.
• Wait for the handpiece to completely stop rotating before inserting or removing a bur or point.
3. Inserting and Removing Burs and Points
• Protect your fingers from being cut by wearing gloves whenever you put in or take out a bur or point.
Operation 2/2
Take out the bur or point and disconnect the handpiece from the motor.
* Refer to the user manual for the motor.
* It may be hard to remove a bur or point if it is left in the handpiece.
4. After Use
5. Cleaning
Wipe the handpiece with a piece of gauze that has been dampened with
Ethanol for Disinfection (ethanol 70 vol% to 80 vol%) and wrung out
thoroughly.
6. Disinfection
7. Lubrication
Put the spray nozzle on the spray can.
8. Removing Excess Oil
• After lubricating the handpiece, do not fail to remove excess oil. The motor could malfunction if any oil
get inside of it. Also excess oil inside the handpiece could cause it to overheat.
10. Troubleshooting
If water does not come out
Refer to the accompany user manual for the motor.
If water comes out
Check the o-ring on the motor joint. Replace it if it is worn or damaged and coat it with oil. If the o-ring is OK, clean
out the air and water holes on the handpiece. If the spray still doesn’t work, have the handpiece repaired.
◆Overheating
Never rotate the handpiece with the chuck open (e.g., if the match marks are not lined up properly). Internal chuck
components will rub against each other; this could wear them out and cause the chuck to fail.
Lock sheath
1. Turn the lock sheath in the direction shown by the
arrow until the chuck is completely open.
2. Pull out the bur or point.
Closed Open
1. Turn the lock sheath in the direction shown by the
arrow to open the chuck.
2. Insert a bur or point all the way in.
3. Turn the lock sheath in the direction shown by the
arrow until the match marks are lined up to close
the chuck all the way.
Insert the bur completely.
9. Packing and Sterilization
Open the chuck.
(The spray will not be effectively delivered if the chuck is
closed.)
Open
Insert the nozzle into the connection end of the hand-
piece, hold it firmly and then spray for about 2 seconds.
Close the lock sheath and point the handpiece down.
Connect it to its motor and rotate it for about 30 sec-
onds. Use a piece of gauze to wipe off any oil that
gets on the outside of the handpiece .
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 by Warranty.
This Warranty will not cover parts of the Product or consumables which normally need to be replaced such as glass or rubber components,
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.
Make sure flows for cooling air and spray are up to specifications. Also make sure the motor is operating properly.
2018.05.PrintedinJapan
If a medical agent being used for the treatment has adhered to
the handpiece, wash it off in running water.
Do not perform ultra sonic cleaning.
Clean drilling and polishing debris off the head with a brush and
running water.
Clean the spray hole with the spray hole wire provided.
After cleaning, use the syringe or an air blow gun to get rid of any
moisture left inside the handpiece.
Lubricate with the LS Spray (sold separately) or MORITA MULTI SPRAY (sold separately) before autoclav-
ing and after morning and afternoon treatment sessions.
Using an air blow gun, blow the handpiece connection for
20 to 30 seconds to get rid of any moisture left inside the
handpiece. Wipe the excess oil from the handpiece with a
gauze.
You can use MORITA's threeway syringe instead of an air
blow gun.
(In this case, attach the air nozzle to the tip of the threeway
syringe. The air nozzle comes with a micromotor or its
optional accessory.)
Before inspecting or adjusting the handpiece, make sure the main power switch is turned on and that the main air and
water valves are open. If the handpiece does not work properly even after inspection and adjustment, contact your local
dealer or J. MORITA OFFICE and have it repaired.
◆Cannot insert burs or points
Take the handpiece off the motor and step on the foot pedal. Does water come out of the motor joint?
◆Poor water delivery
◆Poor rotation
Lubricate the handpiece, and then use a new bur or point to check if the problem has been resolved.
If this does not resolve the problem, have the handpiece repaired.
Make sure the motor is properly connected to its tube. Remove the handpiece from the motor and step on the foot
control. Does the motor run?
If motor runs
Make sure the handpiece is connected to the motor correctly, then step on the foot control to see the bur runs. If
the bur does not run, have the handpiece repaired.
If motor does not run
Refer to the accompany user manual for the motor.
2018-05-21 Pub. No.: L101-62001-501