W&H Roto Quick RQ-03 Instructions For Use Manual page 22

Manual cleaning internal and external
Rinse under demineralized water (< 38 °C / < 100 °F)
with the aid of a brush.
— Remove any liquid residues
(absorbent cloth, blow dry with compressed air).
Do not place the Roto Quick coupling in
liquid disinfectant or in an ultrasonic bath!
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