7
4 Handpiece Ratio Selector:
Allows user to select ratio of hand-
piece. Ensures accurate display of
speed and torque levels.
a.
Depress the handpiece Ratio
selector Up/Down buttons until
the Handpiece Ratio Indicator
matches the ratio indicated on
the handpiece being used. The available
ratios are 20:1, 1:1, 1:2, and 1:5. The rela-
tive speed ranges with a 40K motor are
shown in Figure 7.
Note:
Prior to calibrating a handpiece on the
System, the user must preselect the ratio of
the handpiece via the Ratio Up/Down but-
tons. The System can then perform a “Free-
Run” Calibration on both increaser and
reduction handpieces, then a “Dyno”
Calibration on reduction handpieces only,
with ratios of 16:1 to 32:1. The “Dyno”
Calibration includes a ratio and torque test
via the dynamometer. After completing the
“Dyno” Calibration on a reduction handpiece,
the System will automatically set the precise
handpiece ratio found during these calibra-
tion measurements. For example, after cali-
brating a 20:1 handpiece, the display will
add a decimal to the ratio indicator (ex:
“20:1”, to “20.7:1”), indicating the precise
ratio measured. This also serves as an indi-
cator that the handpiece has been calibrat-
ed.
Fig. 7 - Speed Ranges
SPEED RANGES
20:1
15 - 2,000
RPM
1:1
1,000 - 40,000
RPM
1:2
2,000 - 80,000
RPM
1:5
5,000 - 200,000
RPM
Note:
Multiple handpieces with different
ratios are often required to obtain the vari-
ous high torque and low speed ranges
used in dental surgery procedures.
5 Speed:
Allows user to select desired
speed (RPM) for motor/hand-
piece.
a.
Depress the Speed Up button
to increase speed or the Speed
Down button to decrease speed.
Note:
For display accuracy, the Ratio
Selector must exactly match the ratio of
the handpiece being used. The System will
do this automatically after calibration. In
some cases after calibration, the ratio dis-
played will differ from the handpiece rating,
indicating the handpiece’s actual charac-
teristics.
6 Forward / Reverse (FWD/REV)
:
Sets the rotational direction of
the handpiece.
a.
The green LED next to the
FWD/REV button illuminates when forward
rotation is selected. The amber LED indi-
cates reverse rotation. When the Reverse
Tone feature is activated (ref. para. 17,
page 15), an audible beep will also indi-
cate reverse rotation.
7 Torque Adjustment:
Allows the user to select torque
limits, in Newton•Centimeter
increments.
a.
Depress the Torque
Adjustment Up/Down buttons
until the desired torque level is
indicated on the Display.
Note:
This feature is not available when in
“MAX” Mode - see paragraph 8 for details.
