A device for cleaning supporting strips of workpiece supports includes a motor feed drive assembly having a feed drive motor and a feed member. In one illustrative embodiment, at least part of a wall of a reservoir includes a hydrophobic material, such as a polymonochlorotrifluoroethylene homopolymer andor copolymer. A half-wave antenna element is connected to an end of the linear element. Any gas which leaks into the containment chamber is directed into the gas escape passageway. An incident electron beam is formed and directed to an opaque patterned structure. The ends of the hose are guided out of the pump bed in a crossed configuration.