W&H Roto Quick RQ-03 Instructions For Use Manual page 12

4. Operation – Connecting the Roto Quick coupling
Connect the Roto Quick coupling to the turbine hose.
— Firmly tighten the union nut of the turbine hose by hand in
a clockwise direction to ensure there are no leaks.
This method of assembly provides a connection for drive air, chip air, water and return air (only for RM).
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