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Old 04-23-2019, 03:20 PM   #1
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Refrigerator Drain P-Trap

I discovered something today that might help anyone who is trying eke better performance out of their refrigerator. The drain tube on our Dometic fridge does a loop-de-loop before being fastened down at the base of the refrigerator compartment. I didn’t think anything of this until today when I straightened it out (to run a wire for a new powered interior fridge fan I’m installing) and it dumped a bunch of water out of this loop. That’s when it occurred to me that this loop was acting just like a p-trap, creating a barrier to air exchange between inside and outside of fridge. Clever! This could easily evaporate over time though, so my thought was that it might not be a bad idea to pour a cup of water down the drain from inside the fridge at the beginning of the season, in order to ensure the air lock is there, for anyone looking to get max performance from their fridge. Assuming your drain line routing also has the same loop, of course. Easy to check from the exterior access hatch. Cheers!
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Old 04-23-2019, 04:01 PM   #2
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That drain should also fill every time your unit defrosts/sweats or sheds it's ice after use. How is the fan operating?
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Old 04-23-2019, 04:47 PM   #3
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I used one of these fans in my 17V 5 cu ft refrigerator, as well as my 21, and in both cases, it works well at distributing the "cold" from the fins. Much better than the battery versions. If you dry camp, look for one that doesn't have lights...
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Old 04-23-2019, 11:22 PM   #4
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Quote:
Originally Posted by Vermilye View Post
I used one of these fans in my 17V 5 cu ft refrigerator, as well as my 21, and in both cases, it works well at distributing the "cold" from the fins. Much better than the battery versions. If you dry camp, look for one that doesn't have lights...
Jon, I didn't see what fan you're talking about. Can you post again? Dale
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Old 04-24-2019, 04:56 AM   #5
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Interior fridge fan

We have an interior fridge fan for $24.50 CAD on our build sheet. Is that a new option not available in 2017 or 2018?
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Old 04-24-2019, 06:01 AM   #6
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I believe the optional interior fan is one of these Camco battery operated fans. There are 12v permanent mount fans available, I have had mine for the last 3 Escapes, held in place by velcro and I just get new velcro from the manufacturer. Mine is like the second picture
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Old 04-24-2019, 06:24 AM   #7
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Glad I asked, glad you answered.


27% one star on Amazon.


Thanks again, Jim.
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Old 04-24-2019, 07:10 AM   #8
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This is the Camco refrigerator fan we received from ETI when we picked up our 5.0 last October.



Trouble is, we already had one. We wanted a fan in the rear to help exhaust warm air out the top of the camper. Oh well.

Enjoy,

Perry
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Old 04-24-2019, 07:33 AM   #9
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"Texas" fan option which I believe is no longer being offered. The newer refers do not need them supposedly.
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Old 04-24-2019, 07:54 AM   #10
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The fan on the right in Jim's photos is similar to the one I've used. There are a bunch of them sold on eBay.
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