KaVo INTRAcompact contra-angle 2052 LHC Instructions For Use Manual page 23

First use 21
CAUTION
Hazard from insufficient spray water.
Insufficient spray water can cause the medical device to overheat and
damage the tooth.
▶ Check the spray water channels and clean the spray nozzles with the
nozzle needle Mat. no. 0.410.0921 if necessary.