Tips for a long service life of your ... - KaVo Dental Blog
2017-7-26u2002·u2002If the O-ring on the turbine coupling is defect, the water gets into the ball bearings of the turbine rotor and, via the return air duct, into the treatment center. A defective O-ring on the cannula of the 3-function or multifunctional handpiece means that moist spray air is produced.
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