Welch Allyn Kreativ Mach 4.0 User manual
Mach 4.0 and Mach 4.1
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Service Manual
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.
Manufactured by
Kreativ, Inc. (USA)
9025 Balboa Avenue
San Diego, CA 92123
Copyright Notice:
Copyright © 1999, Kreativ, Inc. All rights reserved. No part of this manual may be
reproduced without written permission from Kreativ, Inc.
European Regulatory Manager
Welch Allyn LTD.
Navan, Co. Meath
Republic of Ireland
Ph: 353-46-79060
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
990242 Rev. A
1
Introduction
Introduction and General Information
The Kreativ Models
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
and
4.0
instructions are written specifically for personnel who have been trained in restorative and
preventive dentistry.
APB devices, manufactured by Kreativ, Inc., are included in this manual. The
4.1
Mach 4.0
and
Advanced Particle Beam Systems (APB) are a
4.1
Mach
Page 1 990242 Rev. A
General Information and Features
The Kreativ Models
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.
Mach 4.0
and
APB are designed to provide a controlled flow of
4.1,
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 2 990242 Rev. A
2
Warnings and Cautions
Safety
Always wear protective eye equipment
particles are deflected into the eye. This applies to all personnel including the patient.
Use a rubber dam
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
chamber or at pulpal exposures
the gingiva when the air is activated
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
cutting.
Always use your high volume evacuation system
Kreativ Models
evacuation system in close proximity to the operative site.
for all operative procedures in order to avoid injury to gingiva or other
. Also
and
handpiece nozzles cut only directly from the end, there is no side
4.1
Mach 4.0
and
4.1.
in order to avoid corneal abrasion or irritation if
never direct the handpiece toward an open pulp
never place the handpiece in direct contact with
. While the abrasive stream will not cut the gingival
when using the handpiece on the
Have the dental assistant place the high volume
Do not attempt to service the unit beyond those described items in the maintenance
section.
The Kreativ Models
the order of a dentist.
Call your nearest Welch Allyn / Kreativ service representative for advice.
Mach 4.0
Page 3 990242 Rev. A
and
APB systems are designed for use only by and on
4.1
Make sure that the air hose and footswitch are connected to the Kreativ Models
and
and that the instruments are connected to a properly grounded electrical outlet.
4.1
Mach 4.0
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 4 990242 Rev. A
3
Controls and Connectors
The diagram on page 8 illustrates the external controls, indicators, and connectors for the Kreativ
Models
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..
Mach 4.0
and
units. The following describes their functions.
4.1
#3 Beam Intensity Control:
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.
( Continuously variable from 1-10 (approximately 0 to 7
Page 5 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 6 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 7 990242 Rev. A
Page 8 990242 Rev. A
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