NSK PRESTO II Mode D'emploi page 2

Thank you purchasing the PRESTO II.
Please read this manual carefully, and store it in a place where it can be easily accessed for future reference.
• PRESTO II is a handpiece used in dental laboratory work for performing fine work on porcelain teeth, porcelain,
ceramics, etc. Do not use for other applications.
• When cutting, wear safety glasses, and use a grinding box and vacuum for safety.
• Do not modify or disassemble unnecessarily. Otherwise, performance and safety may be seriously affected. Please ask
your PRESTO II dealer whenever repairs are required.
• Do not drop the handpiece and unit. Make sure to put the unit on a horizontal and stable surface.
• Observe the permissible speeds the manufacturer or dealer designates for the bur. Otherwise, you may be injured by
scattering and breaking up of the bur.
• Do not use burs which are oscillating or bent or damaged and of which shank portions are worn.
Otherwise, you may be injured by scattering and breaking up of the bur.
• Do not turn the chuck release ring during rotation of the handpiece. Otherwise, the handpiece will be broken.
• Never supply lubricant to the handpiece. It uses a grease filled bearing and additional lubrication may cause failures.
• Pay careful attention to rattling, vibrations, sounds and temperature (heating), and inspect by rotating in advance
before starting use. Immediately ask dealers for repair work if any irregularities are sensed.
• The proper air pressure is 0.2~0.25MPa. Pressure exceeding the value may lead to premature failure of the bearing
because of excessive increases in speeds.
• Extract water if water drips or contaminants are found on the filter of the unit.
• Always clean the shank of the bur you are going to mount. Contaminant deposits in the chuck may lead to oscillating
of the bur and breakage of the chuck.
• Install the cutting bur or test bur even when not in use.
• Operational control, maintenance and inspection is the responsibility of each user.
Caution
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