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Old 06-25-2016, 12:31 PM   #1
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Polishing up my AC covers

My coach is about 2 years old and the black plastic covers for my AC are really showing their age with white streaks and just generally looking dull. So today I decided to clean then up, and also inspect the guts up top. Especially my rear bedroom unit since it makes an annoying buzz when it runs.

I get up top and take the covers off. Since it's so hot I decided to restore them with "Black Again" treatment in the garage out of the sun. I assume this is the same stuff as "Back to Black" from Mothers. The stuff worked great and although the middle AC didn't clean up as well as I'd have liked, it looks 1000% better than before.

I also figured out what the buzz was. A small capillary tube was lying in direct contact with another copper line. And it vibrated when running. I gently bent the tubes apart, and no more buzzing. See the first set of pics. The rest are of the covers before and after restoration. Click image for larger version

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Old 06-25-2016, 01:12 PM   #2
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Hopefully you remembered to vacuum and blow out any cooling fins while you had the covers off!
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Old 06-25-2016, 01:16 PM   #3
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Oh man! Now you set a new standard and I'm going to have to get on the roof

(actually I have to anyway, as I'm replacing the blower fans in all 3)
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Old 06-25-2016, 03:30 PM   #4
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Oh man! Now you set a new standard and I'm going to have to get on the roof

(actually I have to anyway, as I'm replacing the blower fans in all 3)
Wait till fall. I almost croaked from the heat
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Old 06-25-2016, 03:33 PM   #5
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Hopefully you remembered to vacuum and blow out any cooling fins while you had the covers off!
I thought about it but it was so hot there was no bringing additional stuff to clean the fins. Will do it in the fall when things cool down
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Old 06-25-2016, 07:27 PM   #6
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ya, its hot as heck here, but cools off nice in the evenings
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Old 06-25-2016, 08:19 PM   #7
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Great Job on the Covers ! Black fades fast I do mine once a year- wash out the fins w/simple green and good to go !
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Old 06-25-2016, 08:39 PM   #8
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Good job on covers. But. You saved your bacon with fixing that Line. dw won't be you, when it Would have spewed freon !!
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Old 06-26-2016, 08:05 AM   #9
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I painted mine silver to match my coach and also to reflect any sunlight. I used Rust-Oleum plastic paint and should last a long time. Black absorbs heat, silver reflects it.
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Old 06-26-2016, 10:02 AM   #10
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color match is important! I just gave away 3 perfectly good maxair fan covers that were white, and my rooftop appliances are all in black I replaced them with the black Ultra Breeze.
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Old 06-26-2016, 01:32 PM   #11
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I painted mine silver to match my coach and also to reflect any sunlight. I used Rust-Oleum plastic paint and should last a long time. Black absorbs heat, silver reflects it.
Black is awful. My white roof was relatively cool to the touch. The black ladder was so hot I could barely touch it.

How long since you painted the covers? How has it held up?
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Old 06-26-2016, 06:18 PM   #12
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Mine have been Black for the last 15 years and although not the most efficient color - my A/C's cool fine and look good with my paint scene .


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