Welch Allyn Kreativ Mach 4.0 User manual

990242 Rev. A
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 Notice:
Copyright © 1999, Kreativ, Inc. All rights reserved. No part of this manual may be
reproduced without written permission from Kreativ, Inc.
Manufactured by
Kreativ, Inc. (USA)
9025 Balboa Avenue
San Diego, CA 92123
European Regulatory Manager
Welch Allyn LTD.
Navan, Co. Meath
Republic of Ireland
Ph: 353-46-79060
Kreativ Menu
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Service Manual

990242 Rev. A
Chapter Description Page #
1 Introduction and General Information
Introduction...............................................................................................1
Purpose of this Manual .............................................................................1
General Information and Features.............................................................2
Specifications............................................................................................2
2 Safety
Warnings and Cautions.............................................................................3
3 Controls and Connectors
Names and Functions................................................................................5
Drawings of Controls................................................................................8
Functional Description..............................................................................9
4 Unpacking and Setup
General Information................................................................................10
List of Contents.......................................................................................11
Unpacking and Setup ..............................................................................12
Supply Requirements..............................................................................12
Electrical Requirements..........................................................................12
5 Installation and Unit Checkout
Pre-Installation Requirements.................................................................13
Unit Checkout.........................................................................................13
Filling the Mixture Chamber ..................................................................15
Operational Checkout .............................................................................15
Drawing of the Mixing Chamber............................................................16
Footswitch Operation..............................................................................16
Unit Shutdown ........................................................................................17
Unloading the Powder Chamber.............................................................17
6 Sterilization
Sterilization Procedures ..........................................................................18
7 Operating Instructions
Intra-Oral Applications ...........................................................................19
Extra-Oral Applications..........................................................................20
General Operating Procedures ................................................................21
Step-by-Step Operating Instructions.......................................................23
8 Troubleshooting and Maintenance 25
9 Handpieces and Abrasives
Handpieces..............................................................................................29
Abrasives ................................................................................................29
10 Warranty, Returns, and Adjustments
Returns and Adjustments........................................................................30
Limited Warranty....................................................................................30
Storage and Shipment .............................................................................31

Page 1 990242 Rev. A
1
Introduction
and General
Information
Introduction
The Kreativ Models Mach 4.0 and 4.1 Advanced Particle Beam Systems (APB) are a
compact, highly reliable instrument designed for performing Air Abrasive MicroDentistry
procedures. It is designed as a means of removing tooth structure and other materials in
preparing teeth for restoration, and as an adjunct to the high speed dental handpiece and
bur. This instrument was designed after extensive consultation with dentists in order to
provide the optimum performance, taking into consideration patient comfort and the time
constraints faced by today’s 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.
Purpose of this Manual
Information essential to the installation, operation, and routine maintenance of the Mach
4.0 and 4.1 APB devices, manufactured by Kreativ, Inc., are included in this manual. The
instructions are written specifically for personnel who have been trained in restorative and
preventive dentistry.

Page 2 990242 Rev. A
General Information and Features
The Kreativ Models Mach 4.0 and 4.1,APB are designed to provide a controlled flow of
an abrasive powder and air mixture through a very precise nozzle. Applications include
cutting, abrading, deburring, peening, and etching of tooth structures and other materials.
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. A footswitch is provided to
activate the handpiece. The instrument features a mixing chamber which can be quickly
unloaded in order to facilitate service, changing abrasive powders or cleanup of the unit
after use.
Specifications
• Power Requirements: 110-220 volt, AC, 60 Hz.
220-240 volt, AC, 50 Hz.
• Air Requirements : 80 PSI to 120 PSI (maximum)
(550 to 825 kPa)
(filtered dry air source)
• Approximate Size: 13”W x 11”D x 11”H
(33 cm W x 28 cm D x 28 cm H)
• Approximate Weight: 43 lb. (20 kg)
• Environment Limitations: Temperature: 50 °F to 104 °F (+10 °C to 40 °C)
Humidity: 30% to 75%

Page 3 990242 Rev. A
2
Safety
Warnings and Cautions
Always wear protective eye equipment in order to avoid corneal abrasion or irritation if
particles are deflected into the eye. This applies to all personnel including the patient.
Use a rubber dam for all operative procedures in order to avoid injury to gingiva or other
soft tissue. A rubber dam or latex matrix band is also required for interproximal
preparations to protect adjacent tooth surfaces.
In order to reduce the risk of embolism never direct the handpiece toward an open pulp
chamber or at pulpal exposures. Also never place the handpiece in direct contact with
the gingiva when the air is activated. While the abrasive stream will not cut the gingival
tissue, it may irritate it.
The handpiece should be directed precisely at surfaces and tooth structures which are to be
modified or removed. The nozzle tip should be placed two (2) millimeters from the tooth
and angled toward the area to be removed or modified. Unlike the high speed handpiece,
the Mach 4.0 and 4.1 handpiece nozzles cut only directly from the end, there is no side
cutting.
Always use your high volume evacuation system when using the handpiece on the
Kreativ Models Mach 4.0 and 4.1.Have the dental assistant place the high volume
evacuation system in close proximity to the operative site.
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 4 990242 Rev. A
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.
Use only clean dry air. Make sure that your air compressor system is equipped with air
dryer filter systems and that they are fully operational. Any moisture or oil in the air
supply will adversely affect your Mach 4.0 or 4.1 instrument.
Check to be sure that your air system produces a minimum of 80 psig (550 kPa) at 0.7 cfm
(19.8 l/m).
Sound clinical judgment, good common sense, and proper training are essential to the
successful use of the unit in order to provide safe and efficient patient care.
Always follow standard of care protocols in performing dental operative procedures. Air
Abrasive MicroDentistry technology does not replace current accepted standard of care,
rather it is a new technology designed to help accomplish them.

Page 5 990242 Rev. A
3
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.
#2 Green POWER Indicator LED
This LED illuminates when the unit POWER switch is in the ON position indicating that
electrical power is ON..
#3 Beam Intensity Control: ( Continuously variable from 1-10 (approximately 0 to 7
grams/min.)
This knob adjusts the desired rate of powder flow. To operate, begin with minimum abrasive
powder flow and increase until the desired cutting effect is achieved.
#4 Air Pressure Gauge:
Indicates amount of air pressure supplied to the Mixing Chamber and ultimately to the handpiece.
For normal operations, 50-80 psig (345 to 550 kPa) is used. For certain operations a lower or
higher pressure may be desirable.
#5 Particle Energy Control:
Adjusts output air pressure which is indicated on the Air Pressure Gauge.

Page 6 990242 Rev. A
#6 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.
#7 Continuous/Pulse Switch, Mode Indicator LED:
Select either continuous mode or pulse mode. In continuous mode the indicator LED is AMBER.
In pulse mode the indicator LED is GREEN.
#8 Air ON/OFF switch, Air Status LED:
This switch enables the main air solenoid. When in the OFF (amber) position, the air flow
through the system is disabled. In the ON (green) position the system is pressurized.
#9 Powder Chamber Unload Switch:
This switch enables the vibrator assembly when depressed. When used with the powder chamber
in the unload position causes the abrasive to flow smoothly and easily from the chamber.
#10 Handpiece:
The handpiece holds the nozzle through which the abrasive powder/air flows.
#11 Power Supply Cord:
This power supply cord connects electrical power to the unit. This power requires a properly
grounded outlet.
#12 Footswitch:
The Footswitch is an electric switch. When the foot pedal is depressed the main solenoid is
enabled delivering air/abrasive to the nozzle. The orange protective housing will prevent
accidental activation of the system.
#13 Input Air Supply Hose:
This hose connects the external air supply to the unit. A 1/4-18 NPT fitting is provided on the end
of the hose. The air supply should be from a clean, dry air source.
#14 Rear Cover Interlock Switch:
Disables the air supply when the back cover is opened.

Page 7 990242 Rev. A
#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. When the footswitch is released the Quick Dump Pinch Valve opens
allowing the built up pressure and abrasive in the hose and handpiece to be expelled into the
Exhaust Bottle.
#17 Bleed Off Pinch Valve (bottom)
This pinch valve is used to depressurize the system when: a) the unit is turned off b) the Air
Switch is in the Off position or c) the Rear Door Interlock is open. In any of the 3 previous
situations the bottom pinch valve will open allowing any pressure in the unit to be released
through the Exhaust Bottle.
#18 Exhaust Bottle
The Exhaust Bottle is used as a relief port for air pressure and abrasive when the footswitch is
released or the unit is turned off or depressurized.. The air and/or abrasive is received via the
middle and/or bottom pinch valve. Any abrasive is filtered and the air is release via a port on the
side of the Exhaust Bottle. Since the Exhaust filters and collects abrasive, it must be periodically
be emptied.
#19 Coalescing Filter
The Coalescing Filter is in the incoming air supply line. It will remove small amounts of oil or
moisture that might be in the air supply. It automatically dumps any oil or moisture collected each
time the unit is turned off. If oil or moisture is noticed below the coalescing filter, the air supply
should be checked for the source.

Page 8 990242 Rev. A

Page 9 990242 Rev. A
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.
The input air supply is routed throughout the system after passing through the main air
solenoid and coalescing filter. One path is through the main regulator (used to set the
desired operating pressure on the control panel) to the mixing chamber where the abrasive
particles are picked up. From there the air carries the particles through the main pinch
valve and on to the handpiece/nozzle when the footswitch is depressed. The second path
is through the pinch valve regulator and pinch valve control system.
The Beam Intensity control regulates the amount of abrasive particles fed into the main air
stream through the mixing chamber.
The air stream combined with abrasive powder is able to cut and etch tooth structure and
ceramic. The abrasive powder/air stream is directed through a light, flexible hose to the
handpiece for precise cutting. Various handpieces are offered with specific orifice (nozzle)
sizes to enable the practitioner to accomplish particular tasks. In addition, a selection of
abrasive powder is available to accommodate all desired uses. Nozzle and abrasive
powder types are listed in Section 9.
When the Power switch is set to OFF the unit automatically bleeds off the internal air
pressure.
Caution
Do not attempt to open the covers of the unit with power turned on!

Page 10 990242 Rev. A
4
Unpacking and
Setup
General Information
SAVE THE CARTON AFTER UNPACKING THE SYSTEM!
The Mach 4.0 or 4.1 and all accessories are shipped in a single container. When
unpacking, check items against the list of contents packed with the unit. The shipping
container and packing materials should be retained in the unlikely event that the unit
has to be returned to the factory for service or repair.
The table on page 11 lists the standard equipment supplied with the unit.
Operation of the Mach 4.0 or 4.1 requires an external source of either clean, dry,
compressed air or nitrogen together with a properly adjusted pressure regulator. 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 11 990242 Rev. A
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 1
130045 Instructional Video 1
140008 Powder, 27.5 micron (Aluminum Oxide) 4 lbs. ea. 1
170010-2 Green Nozzle, 0.014” (0.36mm) 67° 1
170010-3 Green Nozzle, 0.014” (0.36mm), 90° 1
170011-2 Blue Nozzle, 0.018” (0.46mm), 67° 1
170011-3 Blue Nozzle, 0.018” (0.46mm), 90° 1
170053 Red SST Handpiece/Nozzle Assembly, 45° 1
170081 Footswitch Assembly 1
200002 Standard Handpiece Assembly 2
600105 Domestic Hospital Grade Power Cord 1
990242 Instruction Manual 1
K01-00058-1 Air Supply hose 10' with Quick Disconnect 1
K01-00325-1 Pinch Tube Kit 1
K99-00002-1 Protective Eyewear 3 pr.
K99-00015-1 Fuse, 1A 250V Slo Blo 5 x 20 mm 2
K99-00243-1 Brass Fitting 10-32 x 1/8 for Pneumatic Hose 1

Page 12 990242 Rev. A
Unpacking and Setup
Open and remove the Mach 4.0 or 4.1 unit from the shipping container and proceed as follows:
• Open the front and rear covers by releasing the latches.
• Remove the foam packing (3 pieces) used to prevent the vibrator from moving during
shipping. Retain the foam with the shipping box and packing materials. If the unit is to be
shipped again, the vibrator support foam packing should be reinstalled to prevent possible
damage to the vibrator and its mounts.
Supply Requirements
Air Supply: A filtered compressed air line or nitrogen may be used as the gas supply for the
unit.
For optimal use the normal air supply to the unit should be a minimum of 80 psig (550 kPa) with a
maximum of 120 psig (825 kPa), the air source should provide a minimum of 1.5 CFM (42.5 l/m).
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.
Electrical Requirements
The electrical requirement for this unit is 100-127 VAC, 60 Hz., single phase or 220-240 VAC, 50
Hz. If your requirements are different, consult your nearest authorized Welch Allyn / Kreativ
service representative before operating this unit.
WARNING
Failure to remove the foam packing will result in improper vibrator
operation and powder flow.
CAUTION!
The use of compressed oxygen as a gas supply presents a fire hazard.
Under NO circumstances should oxygen be used.

Page 13 990242 Rev. A
5
Installation and
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. (The ideal air for the Mach 4.0 or 4.1 is obtained by
placing a "T" fitting prior to the final regulator at the operatory but after the dryer, traps
and various filters.)
2. Power supply with earth grounding.
NOTE: Route the power cord safely out of the way and do not use an extension
cord.
Unit Checkout
• Set the Power Switch on the front panel to OFF, and the POWDER FLOW knob
completely counter clockwise to the zero (0) position.
• Connect the end of the air supply hose with the quick disconnect to the external air
supply.
• Plug the power supply cord into a properly grounded receptacle.
• Set the Power Switch to ON. The green pilot light should be illuminated.

Page 14 990242 Rev. A
• Check the reading on the AIR PRESSURE gauge. Set Particle Energy Control
as follows:
1. Pull the black knob out and rotate knob to a reading of 80 PSI (550 kPa) on the
pressure gauge.
2. To prevent any changes push the black knob in/forward to lock it at that setting.
• Verify that a Handpiece/Nozzle is attached to the delivery hose.
• Actuate the Footswitch. Air should flow from the nozzle.
• Set the Power Switch to OFF. This allows the system to depressurize.
• Fill the Powder Chamber as described on the next page.
WARNING!
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.
CAUTION!
Some residual powder may be in the unit from factory testing. Always
use goggles or protective eyewear when using the Kreativ Model Mach
4.0 or 4.1 Air Abrasion instrument and do not direct the nozzle toward
the face when operating the footswitch.
CAUTION!
After turning the Power Switch to the OFF position, monitor the Air
Pressure Gauge to be sure that the air pressure drops to 0. An additional
5 to 10 seconds of depressurizing time must be allowed after the gauge
reading reaches zero (0) before removing the Mixing Chamber Top, or
performing other services.

Page 15 990242 Rev. A
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. Allow an additional 5 to 10 seconds after
the gauge reaches 0 before opening the Powder Chamber.
• Clean off any dust or debris from the Mixing Chamber top and cover.
• Remove the Mixing Chamber lid by turning counterclockwise.
• Carefully pour abrasive powder into the Mixing Chamber until it is 3/4 full.
• Replace the Chamber lid and tighten.
Operational Checkout
• Place the Power Switch to ON and set the Beam Intensity knob to obtain the desired
amount of powder flow for the operation to be performed. Powder flow is at a
minimum counterclockwise “zero” position and gradually increases to the clockwise
or “ten” position. Typical dental procedures use powder flow from 3-5 on the dial.
• Place the Air Switch to the ON position.
• Actuate the Footswitch to obtain powder flow through the nozzle.
You can now practice operative procedures on extracted teeth as described in Section 2,
Safety.
CAUTION!
Make certain that no lint, dirt or other foreign substances enter the chamber.
This can result in plugging the unit.

Page 16 990242 Rev. A

Page 17 990242 Rev. A
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.
• Open the back access panel.
• Firmly hold the chamber and vibrator and loosen the Mixing Chamber Lid by turning it
counterclockwise.
• Completely unscrew the lid from the Mixing Chamber.
• Loosen the locking knob on the Chamber Tilt Plate; slide the Chamber Clamp back to
release and tilt the chamber out of the cabinet.
NOTE: A container must be placed under the chamber opening to catch the abrasive powder.
• Set the Beam Intensity on the front panel to “10”.
• Press the Mixing Chamber Unloading Switch to vibrate the abrasive powder out of the
Mixing Chamber.
• Tilt the Mixing Chamber back to its upright position.
• Slide the Chamber Clamp forward over the Chamber Tilt Plate and tighten the knob.
• Replace the lid and nut making sure the threads are free of powder and the lid gasket
is properly seated.
• Check the two air hoses attached to the Mixing Chamber to assure that they are not
kinked or pinched and that they make a large free loop.

Page 18 990242 Rev. A
6
Sterilization
Sterilization Procedures:
Handpiece/Nozzle:
Any conventional dental (dry heat, steam or chemical) sterilizer or autoclave may be used to
decontaminate the cutting handpiece/nozzle. This is mandatory prior to each use. This procedure
ensures that the handpiece/nozzle cannot become a source for cross contamination of disease or
infection.
Accessories:
The handpiece/nozzle hose assembly of the Kreativ Models Mach 4.0 and 4.1, which will be in
close proximity to the patient or other sources of contamination, should be sheathed or wiped
down in accordance with standard procedures.
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.