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  #11  
Old 2018-02-15, 2:52am
carolrouth carolrouth is offline
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Join Date: Aug 15, 2017
Posts: 10
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Shoot. I didn’t replace the biofilter. I took the screws out of the case, but it didn’t open easily (at all) so I decided to just change out the hepa filter. So far the torch is working like new. Keeping my fingers crossed, as I tossed out the new bio filter.
How many hours have you got on your concentrators?
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