djradz
Veteran Member
Thanks Markie. I've removed and cleaned the outer element once already, but there's no evidence of any dust, dirt or clogging on the inner filter. Maybe I clean and change the outer element more than is necessary, so I don't think I'm swapping the inner element on the third time. I'll probably be waiting until the 1000 hr mark, or maybe even more. I'll just wait to see some evidence of fouling first. Right now, it looks like the outer element is getting everything and NOTHING is getting through. I really like the idea of the inner "safety" element, but at the cost of these things, unnecessary changing seems excesive and are certainly costly. Also, I really don't like the "blow dust from the inside to the outside ... with ... 30 psi or less. At 30 psi I think damage could be done. Usually, to me, if the filter is at all dirty, I just wash it and put a spare on while it dries. I then put the clean one away for the next time. Anyway, thanks again for all the info. I think I'll be following NH's recommendations only somewhat.