Cleaning coils

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Old 06-24-15, 04:40 PM
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Cleaning coils

This is kind of a continuation of http://www.doityourself.com/forum/ai...ed-novice.html but I no longer think the pan is leaking.

I removed a front baffle so I can now see the under (or back) side of the fins that sit above the drain pan. The front/exposed side is clean - the underside, which I had not seen before today, looks like it has a solid layer of hardened dust on it.

It's so caked on there it almost looks like a flame-retardant barrier.

My questions are:
1) These should be clean, right - there's not supposed to be some kind of barrier there?
2) Is the spray you can get from Home Depot the best thing to use? Any specific recommendations?
 
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Old 06-24-15, 10:04 PM
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I recommend using a shop vac with a brush attachment if at all possible.

If you must use liquid in a vertical application, I recommend removing the blower motor first.
 
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Old 06-25-15, 01:02 PM
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If the coil is plugged the blower wheel blades need cleaning; mark where the balance weights are in case they get knocked off or moved!
 
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Old 06-25-15, 05:52 PM
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Thanks for the responses. Your time is always appreciated
 
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