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CLEANING UP
Page 48
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Partial-flow filters don't need maintenance, but the majority of full-flow filters need to have accumulated ash cleaned out once every nine to 12 months.
Do not try to blast it away with an air hose. Aside from the fact that such an approach won't work very well and could cause damage. it is bad for the environment and bad for the health of anybody in the vicinity.
Many suppliers offer an exchange service. Costing from -£150 to E250, it involves a mobile engineer taking off the soiled filter, fitting a clean one, and taking the dirty one away. It is then cleaned and issued to another operator.
KleenAir makes use of metal as opposed to ceramic filters in its partialand full-flow filters and states the sintered metal filter fitted in its full-flow system can be steam-cleaned, reducing maintenance costs_