Operation Procedure
28
4-4
Contra-Check Function
This function evaluates the state of the Contra Angle / Straight Handpiece as:
“OK” : The check result is acceptable
“OIL” : Needs a maintenance such as lubricating with oil
“NG” : There is a serious malfunction
WARNING
Ř
Damaged handpiece, Foreign materials in the handpiece, Inadequate Maintenance, and Water Entrance are
risks for overheating/burn event. Those abnormalities appear as vibration, noise or overheating.Check handpiece
for those abnormalities before treatment, or it may cause overheating of handpiece and cause burn in patients.
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Contra-Check function niether measures the temperature of overheating handpiece directly nor assures to
maintain handpiece safe temperature. As possible risk of overheating still remains even after Contra-Check,
make sure to always check for above abnormalities before treatment.
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If any abnormality, such as vibration, noise or overheating occurs, stop using the handpiece immediately and
contact your authorized NSK dealer.
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This function is only available for NSK Contra Angle /Straight Handpiece : models of Z95L, Z85L, X95EX, X95L,
X95, M95L, M95, X85L, X85 of Gear Ratio 1:5, Z25L, X25L, X25, X65L, X65, M25L, M25, M65 of Gear Ratio
1:1, Z15L, X15L, X15, M15L, M15 of Gear Ratio 4:1 and the NLZ Endo Contra Angle Handpiece of Gear Ratio 6:1.
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Use of incorrect handpieces may cause overheating.
NOTICE
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Perform this function before treatment to check the handpiece status.
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Contra-Check function includes torque calibration under the Rotary Endo Mode.
Torque displayed in the Rotary Endo Mode varies according to the type of handpiece or it’s using condition. This
is a function to recognize the rotation torque of the attached handpiece and to adjust the generated torque into
the set torque limit value.
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After the Handpiece is evaluated as “NG” or “OIL” through the Contra-Check, the motor rotation is automatically
slowed down and stopped if the risk of overheating is detected. (Refer to “3-8 Changing the settings for various
functions”)