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Battery Cover
Rubber Cover
Screw
Battery Cover
Battery Cover
22 23
Changing Batteries
Prepare small screwdrivers (Phillips, flatblade).
1. Turn off the power of the motor handpiece.
2. Remove the rubber cover from the battery
cover with a thin flatblade screwdriver.
(Fig. 11)
3. Remove the screw fixing the battery cover
with a Phillips screwdriver. (Fig. 12)
4. Remove the battery cover by sliding it toward
the charging terminal. (Fig. 13)
5. Remove old batteries.
6. Insert new batteries according to the polarity
marking in the battery box. A mix-up between
the positive and negative sides will not allow
operation of the handpiece.
7. Attach the battery cover.
8. Tighten the screw with a Phillips screwdriver.
Do not overtighten it.
9. Insert the rubber cover back into the screw
hole of the battery cover in the originally
inserted direction.
Changing of batteries is now completed. Charge
them fully before use.
The motor handpiece monitors temperature of the batteries. If the batteries can potentially
become abnormally hot, this system functions and the motor handpiece automatically stops. In
such a case, wait until the motor handpiece cools down sufficiently. If this safety system
functions repeatedly, either the batteries or motor handpiece is not in the normal operating
condition and you should contact your dealer.
10. Safety System
The motor handpiece uses rechargeable batteries. They can be recharged 300-500 times,
depending on the use conditions of the motor handpiece. If the operating time becomes
shorter or the rotation speed becomes slower, although the “MEMORY EFFECT” described in
“ NOTICE” is not applicable, the batteries may be at the end of their life expectancy. In such
a case, ask your dealer to replace the batteries or replace them with new ones yourself. (Refer
to the “ Changing Batteries.”) When replacing them by yourself, be sure to observe the
following “ CAUTIONS ON CHANGING BATTERIES.” Please note that NSK shall not be liable
for any malfunction or failure resulting from you changing the batteries yourself and not
following the “ CAUTIONS ON CHANGING BATTERIES.”
11. Changing Batteries
• Do not misplace the rubber cover and screw.
• The used nickel metal hydride batteries are recyclable, but their disposal may
sometimes not be permitted by the respective country. Return them to your dealer.
CAUTION
• Do not open any part other than the battery cover.
• Use only batteries as specified by NSK.
• Designated Batteries : AAA (marking may be different) nickel metal hydride batteries,
nominal 1.2 V
• Do not use non-charging type batteries such as alkaline batteries and manganese
batteries. Charging with these batteries may cause fluid leaks, explosion or chlorine
gas generation.
• Should the battery fluid leak and get into your eyes, immediately wash thoroughly with
clean water and seek medical attention.
• Should the battery fluid leak and adhere to skin or clothing, immediately wash the
exposed skin thoroughly with clean water and completely wash away the fluid. Failure
to do so may result in a skin irritation.
• Always replace two batteries of the same type by the same manufacturer at the same
time. Using batteries of different-types, an exhausted battery with a fully charged one,
or a new battery with an old one may cause a fluid leak or explosion.
• Do not work with wet hands. Failure to do so may result in rust formation on battery
terminals or moisture intrusion inside, and could cause failure of the product.
CAUTIONS on CHANGING BATTERIES
Fig. 11
Fig. 12
Fig. 13
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