W&H Roto Quick RQ-03 Instructions For Use Manual page 16

Operation – Changing air driven instruments
Never connect or disconnect the air driven instrument while the system is running!
> ttach the air driven instrument onto the Roto Quick coupling until it audibly engages.
> Pull axially along the Roto Quick coupling to check that the air driven instrument is securely attached.
> Pull the retention sleeve of the Roto Quick coupling back.
> To disconnect the air driven instrument, pull it off in axial direction.
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