KaVo INTRAmatic Contra-angle 23 ES 1.004.5380 Instructions For Use Manual page 20

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To ensure proper function, the medical device must be set up according to
the reprocessing methods described in the KaVo Instructions for Use, and
the care products and care systems described therein must be used. KaVo
recommends specifying a service interval at the dental office for a licensed
shop to clean, service and check the functioning of the medical device.
This service interval depends on the frequency of use and should be adjus‐
ted accordingly.
Service may only be carried out by KaVo-trained repair shops using origi‐
nal KaVo replacement parts.