New unit enhances DPF cleaning efficiency

Oct. 7, 2010
A new Diesel Particulate Filter (DPF) Thermal Processing Unit (part number 5281) is designed to improve the efficiency of DPF cleaning by converting unburned hydrocarbons into ash prior to the air burst cleaning cycle.

A new Diesel Particulate Filter (DPF) Thermal Processing Unit (part number 5281) is designed to improve the efficiency of DPF cleaning by converting unburned hydrocarbons into ash prior to the air burst cleaning cycle.

The unit, from SPX Brand OTC, is pre-programmed to “ramp-up” temperature at a rate that will not crack the substrate of the filter, OTC said. It will hold the temperature constant for two hours to ensure complete regeneration of the filter.

“Diesel filters capture ash and soot generated during the diesel combustion cycle and, through a regeneration process, oxidize the soot leaving the ash behind,” said Eric Adamson, product manager of equipment and heavy-duty tools, SPX Service Solutions. “Eventually, the ash buildup reduces the efficiency of the DPF, requiring either replacement or cleaning of the filter.

“Filters can be cleaned with the OTC 5280 using an air burst cycle and duration that is pre-programmed for each OEM manufacturer,” Adamson added. “Prior to executing the cleaning cycle, the 5280 performs a micro-burst test sequence to determine if the filter is suitable for cleaning with the normal burst cycle.”

The Thermal Processing Unit features a cordierite shelf and stainless steel tray to protect the internal insulation of the unit. It also features a redundant door lock/safety switch for maximum protection for the technician and the shop. The unit’s computer controlled process is pre-programmed to execute the entire thermal regeneration cycle, providing regeneration without constant technician monitoring. The 5281 is ETL certified to the UL499 and UL201 standards.

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