The test run prior to the repair showed that the small ball bearing in the front of the handpiece was worn out.This bearing guides the clamped tool and is therefore loaded during use.A worn bearings leads to high friction and hence to heat up.To avoid such issues the instruction for use contains already several warnings and notes how to prepare and use the product: technical condition: a damaged device or components could injure patients, users and third parties.Only operate devices or components if they are undamaged on the outside.Check that the device is working properly and is in satisfactory condition before each use.If there are any broken or damaged parts or clearly visible changes on the surface, the parts must be checked by the service.Safety checks may only be performed by trained service personnel.If the following defects occur, stop working and have the service personnel carry out repair work: malfunctions, damage, irregular running noise, excessive vibration, overheating, dental bur or diamond grinder are not firmly locked in the handpiece.Kavo recommends specifying in-house service intervals where the medical device is brought to a professional shop for cleaning, servicing and a function check.Define the service interval depending on the frequency of use.
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