(1) Except as specified in subsection (2) of this section, linens must be mechanically washed.

(2) In food establishments in which only wiping cloths are laundered as specified under WAC 246-215-04320(2), the wiping cloths may be laundered in a mechanical washer, sink designated only for laundering wiping cloths, or a warewashing sink that is cleaned as specified under WAC 246-215-04515.