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Service Manual
Manufactured by
Kreativ, Inc. (USA)
9025 Balboa Avenue
San Diego, CA 92123
Mach 4.0 and Mach 4.1
Air Abrasion Instruments
Instructions for Use
Please read this manual thoroughly
prior to first use
CAUTION: This device must only be
purchased by, or sold to, a licensed dentist.
Copyright © 1999, Kreativ, Inc. All rights reserved. No part of this manual may be
reproduced without written permission from Kreativ, Inc.
Copyright Notice:
European Regulatory Manager
Welch Allyn LTD.
Navan, Co. Meath
Republic of Ireland
Ph: 353-46-79060
990242 Rev. A
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Related Manuals for Welch Allyn Kreativ Mach 4.0
Summary of Contents for Welch Allyn Kreativ Mach 4.0
- Page 1 Copyright © 1999, Kreativ, Inc. All rights reserved. No part of this manual may be reproduced without written permission from Kreativ, Inc. Manufactured by European Regulatory Manager Kreativ, Inc. (USA) Welch Allyn LTD. 9025 Balboa Avenue Navan, Co. Meath San Diego, CA 92123 Republic of Ireland Ph: 353-46-79060 990242 Rev.
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Page 2: Table Of Contents
Chapter Description Page # Introduction and General Information Introduction....................1 Purpose of this Manual ................1 General Information and Features.............2 Specifications....................2 Safety Warnings and Cautions................3 Controls and Connectors Names and Functions................5 Drawings of Controls................8 Functional Description................9 Unpacking and Setup General Information................10 List of Contents..................11 Unpacking and Setup ................12 Supply Requirements ................12 Electrical Requirements................12... -
Page 3: Introduction And General Information Introduction
21st century dental office. This manual should be thoroughly studied before installing and using the equipment. Please call your nearest Welch Allyn / Kreativ service representative if you need additional information regarding installation, operation or service of the unit. -
Page 4: General Information And Features
A full selection of abrasive powders and nozzle sizes are available from your nearest Welch Allyn / Kreativ distributor. See the listing of supplies in Section 9. All user serviced components, such as control valves and hose connections allow for easy access through the front and rear panels of the instrument. -
Page 5: Safety
Do not attempt to service the unit beyond those described items in the maintenance section. Call your nearest Welch Allyn / Kreativ service representative for advice. The Kreativ Models Mach 4.0 and 4.1 APB systems are designed for use only by and on the order of a dentist. - Page 6 Make sure that the air hose and footswitch are connected to the Kreativ Models Mach 4.0 and 4.1 and that the instruments are connected to a properly grounded electrical outlet. Do not substitute non-Kreativ, Inc. materials. Use of materials supplied by other manufacturers may result in damage to the unit and will void the factory warranty.
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Page 7: Controls And Connectors
Controls and Connectors The diagram on page 8 illustrates the external controls, indicators, and connectors for the Kreativ Models Mach 4.0 and 4.1 units. The following describes their functions. Names and Functions #1. Unit POWER Switch; In the ON position, this switch activates the main power to the unit. Green POWER Indicator LED This LED illuminates when the unit POWER switch is in the ON position indicating that electrical power is ON.. - Page 8 Status Indicator LED: Indicates the status of main (top) pinch valve. When the light is GREEN, the pinch valve is OK. When the pinch valve tubing ruptures and requires replacing, the Status indicator will flash red and an audible alarm will sound when the footswitch is depressed. Continuous/Pulse Switch, Mode Indicator LED: Select either continuous mode or pulse mode.
- Page 9 #15 Main Abrasive Pinch Valve (top) The top pinch valve opens and closes with depression of the footswitch. It controls the flow of air/abrasive to the handpiece/nozzle. The Status Indicator LED monitors this pinch valve and will flash red with a audible alarm when the pinch valve tubing is ruptured and needs replacing. #16 Quick Dump Pinch Valve (middle) This pinch valve relieves the pressure and abrasive in the hose and handpiece when the Footswitch is released.
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Page 10: Drawings Of Controls
Page 8 990242 Rev. A... -
Page 11: Functional Description
Functional Description The power Indicator LED is illuminated when the unit is ON and ready for use. This indicates that AC input power is connected to the unit. Kreativ Models Mach 4.0 and 4.1 provide a controlled mixture of abrasive powder particles in a dry air stream and delivers this mixture through a nozzle. -
Page 12: Unpacking And Setup
In most cases your standard dental compressor and high volume evacuation system are adequate for this purpose. For additional information consult your nearest authorized Welch Allyn / Kreativ service representative. -
Page 13: List Of Contents
List of Contents Part Number Item Quantity Standard Equipment K01-00090-001 Kreativ Model Mach 4.0 or 4.1 APB with Footswitch 1 Includes: 130041 Domestic Starter Kit 130045 Instructional Video 140008 Powder, 27.5 micron (Aluminum Oxide) 4 lbs. ea. 170010-2 Green Nozzle, 0.014” (0.36mm) 67° 170010-3 Green Nozzle, 0.014”... -
Page 14: Unpacking And Setup
Since many dental office compressed air lines may be contaminated with moisture, oil and dirt which are detrimental to the performance and operation of the unit, moisture filters and unloaders must be used. Moisture filters for this purpose can be purchased directly from your Welch Allyn / Kreativ sales representative. -
Page 15: Installation And Unit Checkout
Unit Checkout After completing the operations in Section 4 you are now ready to begin installation of your Kreativ Mach 4.0 or 4.1. Pre-Installation Requirements 1. Adequate Air Supply. Ensure that you have at least 80 PSI (550 kPa) @ 1.5 CFM (42.5 l/m) of clean, dry air. - Page 16 If the green pilot light does not go on, it indicates absence of electrical power. If, after verifiying that power is available, the indicator light STILL does not go on, consult your local Welch Allyn / Kreativ service representative. • Check the reading on the AIR PRESSURE gauge.
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Page 17: Filling The Mixture Chamber
Filling the Mixing Chamber Observe the following procedures when filling the Mixing Chamber. • Place the Power Switch of the unit to OFF. This allows the system to depressurize. • After turning the Power Switch to the OFF position, monitor the Air Pressure Gauge to be sure that the air pressure drops to 0. -
Page 18: Drawing Of The Mixing Chamber
Page 16 990242 Rev. A... -
Page 19: Footswitch Operation
Footswitch Operation • Footswitch operation: depressing the footswitch starts the powder flow through the handpiece/nozzle. Unit Shutdown • Set the Power Switch to OFF. Unloading Powder Chamber The illustrations on page 16 show the parts involved in unloading the Mixing Chamber. Follow these directions when unloading it. -
Page 20: Sterilization
Sterilization WARNING! All Kreativ Model Mach 4.0 and 4.1 accessories which come into contact with the patient must be sterilized prior to each use. Sterilization Procedures: Handpiece/Nozzle: Any conventional dental (dry heat, steam or chemical) sterilizer or autoclave may be used to decontaminate the cutting handpiece/nozzle. -
Page 21: Operating Instructions
Instructions SPECIAL NOTE: As previously stated. you should practice on extracted teeth in order to appreciate the unique cutting ability of the Kreativ Mach 4.0 or 4.1 systems. Intra-Oral Applications: • Cavity preparation for dental restorations. • Removal of composite restorations. -
Page 22: Extra-Oral Applications
Extra-Oral Applications • Clean cement from a displaced crown prior to recementations. • Satinize metallic restoration to locate interference prior to cementation. • Etch internal surfaces of restorations. • Carve occlusal anatomy in porcelain restorations prior to bonding cementation. • Etching stainless steel crown. •... -
Page 23: General Operating Procedures
⇒ Enamel cuts slower than dentin thus: • It may take 1-2 minutes to complete a class I preparation on a molar • But it may take only 5 seconds to complete a class V preparation on a premolar. ⇒ Increased powder flow and air pressure will increase cutting speed, but it will also deliver more powder which must be controlled with the high volume evacuation. - Page 24 Powder Flow Adjustment Depressing the footswitch causes a mixture of powder and air to be discharged from the nozzle. Control the mixture richness with the Beam Intensity Knob which adjusts the vibrator speed. We suggest starting between the 3 and 5 position. Pressure Behind the Nozzle Necessary air pressure varies depending upon: •...
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Page 25: Step-By-Step Operating Instructions
Stopping to Rinse Most cavity preparations will take between 30 seconds to 1½ minutes. On longer procedures some patients will experience discomfort from dryness and may wish to have their mouth rinsed with the water syringe and evacuated with the saliva ejector. WARNING! Without adequate filtration, use of the Mach 4.0 or 4.1 may accelerate the wear on the metal parts of your vacuum system. - Page 26 8. When the procedure has been completed, turn the Power Switch to OFF. The Main Air Valve will be closed, the input air supply will shut off, the unit will depressurize. CAUTION! When changing powders, you must discharge any residual powder remaining in the air lines.
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Page 27: Troubleshooting And Maintenance
Troubleshooting and Maintenance PROBLEM PROBABLE CAUSE REMEDY • Instrument not plugged in No power Check plug • Main switch OFF Check switch • • • • Blown Fuse Change fuse • • • • Call Service Representative Main switch bad •... - Page 28 PROBLEM PROBABLE CAUSE REMEDY • Clogged orifice in Chamber No powder flow Disassemble & clean chamber • Worn nozzle tip Powder spray loses definition Replace nozzle • Too much distance Move closer • Indicates main (top) pinch Status LED flashes red with Replace pinch valve tubing audible alarm valve is ruptured...
- Page 29 3) Turn the unit on end and actuate the Footswitch, supplying air to reverse flush the clogged tip. NOTE: This should be done in an exhaust chamber. Handpiece/nozzles for special applications are available. Consult your Welch Allyn / Kreativ sales representative for information.
- Page 30 1) Set the Power Switch to the OFF position and monitor the Air Pressure Gauge to be sure that the air pressure drops to 0. Allow an additional 5 to 10 seconds after the gauge reading reaches 0. 2) Remove the front black block from the assembly by removing the two knurled screws. 3) Remove the tube from the fittings and carefully insert the new control valve tube between the fittings.
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Page 31: Handpieces And Abrasives
Handpieces and Abrasives Handpieces These custom nozzles are available for the Kreativ Mach 4.0 and 4.1: • 0.011” (.28mm) ID at either 45°, 67° or 90° • 0.014” (.36mm) ID at either 45°, 67° or 90° • 0.018” (.46mm) ID at either 45°, 67° or 90°... -
Page 32: Warranty, Returns And Adjustments
Inc., under valid warranty claims, is limited to repair or replacement at the purchaser’s authorized Welch Allyn / Kreativ Service Center or the purchaser’s place of business, at the option of the authorized service representative. If it is necessary to return a product for repair or replacement, authorization for the return must first be obtained from the authorized service representative. -
Page 33: Storage And Shipment
handpiece tips) are not warranteed against normal wear and tear or customer damage. This limited warranty applies only to the original purchaser / user of the equipment. The foregoing limited warranty is exclusive and in lieu of all other warranties, whether written, oral, or implied, and shall be purchaser’s sole remedy and Kreativ’s sole liability under contract or warranty or otherwise for the product.
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