Hot Oil Cleaning
Whenever there is excessive oxidation of the oil and aging of the paper insulation, the service recommended most often is hot oil cleaning. This valuable process involves the use of a mobile oil processing unit (a.k.a. vacuum oil processor or “VOP”) or oil reclamation “rig,” with the use of filtering clay such as Fuller’s Earth. The oil is reclaimed in the VOP through heating and vacuuming and sub-micronic filtration, and then returned to the equipment that is being cleaned.