The invention relates to an operating apparatus for the automated refilling of a lubricating head with a wetting agent, which is inserted on a package adapter placed on the hollow shaft of a two-for-one twisting spindle. To this end, a maintenance automat traveling to the two-for-one twisting spindle to be serviced is provided, which comprises a gripper adapted to swing out of the maintenance automat and to move upward and downward, so as to remove the lubricating head from the region of the two-for-one twisting spindle and to connect same with a refilling station located in the maintenance automat.
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