- How DPF cleaning machines workSoot burns off during regeneration but ash doesn’t, so an ash-loaded filter has to come off and be washed out against the exhaust flow. The guide separates soot, ash, oil, damage and faults, and explains on-vehicle treatment, other components and the limits of cleaning.
- The METClean cleaning processEvery METClean runs prewash, wash and high-pressure impact, then clears and dries the filter. The S adds a pre-test and heated drying; the E and V use straps and a compressed-air purge. Here is the job step by step for each model.
- Filtration and water managementWash water is filtered and reused for several cleans, then drained with its sludge and sent for approved disposal. This covers the filter arrangement, how the filters are cleaned, water changes and the waste route.
- Pressure testing and reportingThe S measures how hard a filter resists air before and after cleaning and prints a record. A reading shows change on one machine; it can’t certify a filter or spot a crack. Testing on other models is still being confirmed.
- Off-vehicle DPF, SCR, DOC and GPF cleaningMETClean machines clean all four components off the vehicle, washed through against the exhaust flow and dried. What each component does, how it is cleaned, which machines do it and the limits.
- On-vehicle DPF cleaningMETClean’s two-stage fluid and applicator treat a soot-blocked filter without removing it. It clears soot and oil, not ash; the products, how a treatment is done, and when the filter needs to come off instead.
How these guides are written
Each guide follows MET’s operating instructions and the machines’ product records. Where a value or capability is still being confirmed with MET, it shows Awaiting approval rather than an estimate, and each guide lists the questions still open.
The guides explain the process; they don’t replace training or the full instructions supplied with your machine, which include the safety procedures.