990154 Rev. A
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Mach 7/8 Rear Panel connections
Figure 2: Mach 7/8 Rear Panel Connections
WARNING: Some residual powder may remain in the
unit after factory testing. Always use protective
eyewear when using the Mach 7/8 Air Abrasion
system, and do not direct the nozzle towards the
face when operating the footswitch.
CAUTION: Many air and water connectors look
alike. Do not connect your instrument to
water. Connecting the instrument’s air input
supply line to a water outlet will damage the
instrument. Repairs for such damage are not
covered under the limited warranty.
1. Open the Mach 7/8 cover.
2. Open the powder chamber, remove desiccant pack
from inside of chamber and fill it with powder (see
Filling the Powder Chamber
).
3. Close the powder chamber and Mach 7/8 covers.
4. Connect the footswitch to the rear panel of the unit.
5. Connect the delivery hose between the handpiece
nozzle assembly and the front of the Mach 7/8.
Place the handpiece with extension in the cradle.
Note: When removing handpiece for sterilization,
always return handpiece extension in the cradle.
6. Connect the air hose between the office air supply
and the Mach 7/8. If you have a compressor, refer to
the compressor User’s Guide for information about
use of Welch Allyn / Kreativ
compressor air.
7. Connect the DC output of the external power supply
to the back of the Mach 7/8 unit.
8. Connect the power supply cord between an external
power supply and a properly grounded AC outlet.
9. If a remote control is provided with your unit, refer to
your remote control User’s Guide for connection.
Note:
A remote plugged into a Mach 7 will take control
from the front panel. A remote plugged into a
Mach 8 will function as a second operatory.
Note:
A special footswitch “Y” adapter cable is required
for the Mach 8 (see page 5).
CAUTION: Do not exceed 135 PSI at input. Applying
pressure in excess of 135 PSI will cause the
relief valve to release any excess pressure.
Filling the Powder Chamber
WARNING: Press A i r to select Standby mode
before
opening the lid and filling the powder chamber.
The lid cannot be removed with the system
pressurized (in Ready mode).
1. Set the Mach 7/8 Power Switch to OFF.
2. Open the lid of the Mach 7/8.
3. Remove the powder chamber lid by turning it
counterclockwise.
4. Pour powder into the powder chamber to a level just
below the metal filter.
Make sure that no lint, dirt, or
other foreign substance enters the chamber
.
5. Close the powder bottle tightly to prevent moisture
from entering the bottle.
6. Replace the powder chamber lid and hand tighten it.
7. Close the Mach 7/8 lid.
WARNING: Do not power up the system with the
powder chamber open.
User Settings
You can change the Mach 7/8 factory settings for error
code and pressure displays. Error codes can be
displayed in English, numeric, or both. Particle energy
can be displayed in PSI or kPa.
1. When the unit powers up, it will display a version
code. Press and release the Nozzle Select button
when this code is displayed.
2. Press the
▲▼
Beam Intensity keys to select a mode
for error code display: 1 = English, 2 = Numeric,
3 = Alternating.
3. Press the
▲▼
Particle keys to select a mode for
Particle Energy display: 1 = PSI, 2 = kPa.
4. Turn the system off and on to enter your changes.
R E M O TE
