Importance

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Abstract

There is disclosed a cleaning apparatus for a radiation source assembly in a fluid treatment system. The cleaning system comprises: a cleaning carriage comprising at least one cleaning element for contact with at least a portion of the exterior of the radiation source assembly; a rodless cylinder comprising an elongate housing having a longitudinal axis; a slidable element disposed on an exterior surface of the elongate housing, the slidable element being: (i) coupled to the cleaning carriage, and (ii) magnetically coupled to a driving element disposed within the elongate housing, the driving element comprising a friction modifying element in contact with an interior surface of the elongate housing to define a first frictional resistance in a rotational direction about the longitudinal axis and a second frictional resistance in an axial direction along the longitudinal axis, the friction modifying element configured such that the first frictional resistance is greater than the second friction resistance; and an elongate motive element coupled to the driving element.

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First Claim