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Unit part<br />
OPERATION SETTING<br />
Function of calculating and displaying the micromotor gear ratio<br />
▪ This setting function converts the gear ratio of the<br />
contra-angle handpiece to be mounted to the<br />
micromotor and displays values near the actual<br />
revolutions.<br />
▪ Four gear ratios are converted: ×5, ×1, ÷4 and ÷16.<br />
▪ No gear ratio is displayed in the constant-speed<br />
mo<strong>de</strong>.<br />
[Setting procedures]<br />
1. Pick the micromotor up from the hol<strong>de</strong>r.<br />
2. Press the page feed button twice and select<br />
.<br />
3. Select “Set gear ratio” and press to <strong>de</strong>termine.<br />
4. Select inten<strong>de</strong>d setting with or and<br />
press to save.<br />
▪ Setting is stored in memory (M1 to M4).<br />
Set gear ratio<br />
Setting<br />
×5 ×1 ÷4 ÷16<br />
Set gear ratio<br />
×5<br />
CAUTION<br />
Check the gear ratios and revolutions marked on the<br />
high-, regular- and slow-speed contra-angle<br />
handpieces and indicator before use.<br />
Never carry out work requiring large load at low<br />
revolutions such as PMTC using a rubber cup or brush<br />
for the regular-speed contra-angle handpiece, etc.<br />
Otherwise, the <strong>de</strong>vices may break down earlier or<br />
rotation may stop due to insufficient torque. For such<br />
works, use the exclusive slow-speed contra-angle<br />
handpiece.<br />
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