Particulate Filter Cleaning
All particulate filters, regardless of brand, application, or size, require periodic cleaning and servicing to maintain their performance. Cleaning the diesel particulate filter removes trapped particulate and ash from the channels of the filter. Failure to clean the filter can result in both increased backpressure to the engine, as well as reduced filter life.
Some cleaning methods allow the releases particulate and ash into the air. This creates a serious health and safety issue and is damaging to the environment. The Cawdell DPF Cleaning Station prevents this danger.
The Cawdell DPF Cleaning Station
The unit, is based on principals learnt with the benefit of over 25 years of proven filter regeneration & cleaning experience. Cawdell have used our partners original concept to develop our system which is built in the UK. It will clean diesel particulate filters of all types with the addition of simple adaptors.
The cleaning process is a 3-stage system, developed with safety in mind when cleaning the filter. The first stage, removing excess particulate, is essential for an effective regeneration. The regeneration stage exposes the filter to elevated temperatures to oxidise any remaining particulate (soot) under controlled conditions. The last stage removes any remaining ash.
When a filter comes out of the Cleaning Station, it is perfectly clean, almost to the stage of a new filter.
The Unit is designed to clean both cordierite and silicon-carbide filter blocks between 3 and 26 litres capacity.
The first stage of the cleaning process uses regulated compressed air to eject any excess particulate (soot) from the filter whilst drawing any ejected contaminant into a vacuum container. This is important as it eliminates operator exposure. Removing excess particulate prior to the heat cycle prevents excessive temperatures during filter cleaning.
The second stage is the heat cycle which elevates the filter core temperature in a strictly controlled manner and passes air through the filter to provide the necessary combustion oxygen whilst ensuring uniform temperature distribution.
In the third stage, following regeneration, compressed air is used in conjunction with the vacuum collection system to remove any remaining ash. The unit is designed with safety in mind. Solenoid valves ensure that the compressed air is only available when the filter is at an appropriate temperature. Water traps protect the electrical components from both water and condensation. The vacuum collection system allows the debris collected from the cleaning process to be disposed of following both municipal and environmental guidelines without worker exposure.
All filters need to be stripped from the exhaust housing for cleaning.