Nakanishi NSK NLZ Endo Operation Manual page 16

7-2 Cleaning, Disinfecting, and Drying
Perform cleaning, disinfecting, and drying using either the manual or automatic method.
Manual Method (Cleaning, Disinfecting, and Drying the Exterior)
1) Clean the exterior of the handpiece under running water using a soft (non-metallic) brush
(Fig. 9, 10).
(Wash the whole exterior with a toothbrush for 15 seconds and around the bur insertion
hole for another 15 seconds with an interdental brush.) (Water temperature 38°C or less,
drinking water level of water quality recommended)
After cleaning the handpiece, confirm that it is clean under appropriate lighting
(500 lx or higher).
If the handpiece is still dirty, repeat the procedure.
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Fig. 9
Fig. 10