Operation Procedure
32
7
Press the Check Key again to return to the regular
screen.
7
CAUTION
Ř
There are cases where the motor works and the checking result is “OK” even though the bur or the file does not
rotate. In such case, the gears of the handpiece are worn out and damaged. Please contact your Authorized NSK
Dealer.
Ř
Contra-Check does not guarantee safety of handpieces in any environment.
Perform pre-use inspections ("3-9 Check before treatment") together with Contra-Check to ensure safety before
use.
NOTICE
Depending on the type of lubricator and maintenance unit, oil may build up inside the handpiece and have bad
impact on the checking process. If "OIL" or "NG" is displayed:
(1) Insert the purge nozzle (Refer to “2-1 List of
components”) into the rear of the handpiece, until
it clicks of a secure insertion and then insert the
tip of the air gun / syringe into the purge nozzle.
(2) Run air with air gun / syringe for 30 seconds to
purge oil from inside the handpiece.
Purge nozzle
Air gun / Syringe
(3) Perform the checking again.