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Old 10-22-2006, 05:38 PM   #1
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Burping my Fridge???

This is my last resort. My Fridge in my 60 Overlander will not cool down. I put a new heating element in and on a/c the coils get good and hot except for a couple of pipes. Per the Forums I am "burping". Does any one know how long to leave it upside down? And how long should I wait before it is right side up,
before I plug it in? Or right away? Is there any shaking or baking involved to dislodge the chemicals that been sitting for 20yrs?
Any help is appreciated.
Thanks,

Steve
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Old 10-22-2006, 06:05 PM   #2
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burrrrrrrrrrrp

hi- I left mine upside down for several hours, did that a couple times. Another poster here said it does not hurt to leave them that way overnite. After doing that, mine made ice in 4 or 5 hours, the first time I tried it on gas. Good luck!
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Old 10-22-2006, 06:06 PM   #3
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Quote:
Originally Posted by airhead
This is my last resort. My Fridge in my 60 Overlander will not cool down. I put a new heating element in and on a/c the coils get good and hot except for a couple of pipes. Per the Forums I am "burping". Does any one know how long to leave it upside down? And how long should I wait before it is right side up,
before I plug it in? Or right away? Is there any shaking or baking involved to dislodge the chemicals that been sitting for 20yrs?
I'm not sure I would "burp" my fridge. Turning the fridge upside down dislodges particles that could further clog the system.
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Old 10-22-2006, 06:14 PM   #4
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To burp or not to burp. That is a good point that it may further lodge particles. However, this is my last hope, then maybe replace or rebuild (if possible).
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Old 10-22-2006, 06:20 PM   #5
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They get colicky. Common fix on old Servel gas fridges. Overnight is OK. Take it out of the trailer first!
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Old 10-23-2006, 02:40 AM   #6
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Hi Steve, I just did the "burping" with my 41 yr. old Dometic. Before hand it would struggle to get cold. It literally took it a day and a half to get cold. Now it gets cold within 4 or 5 hours of turning it on. I mean cold, like 28 deg. in the refer portion.

Here is what I did. I turned it over for about half a day and then back. I then turned it back over again and let it sit that way overnight. The next morning I turned it back over and let it sit for about another half day.

One word of caution, After turning it rightside up wait a while before starting it again. It takes time for everything to settle back down.

Other things to consider while you have you refer out, clean the burner tube and orifice. Mine was clogged. Clean the heat tube if it is dirty. There also might be a filter inline before your thermostat I would shake the dirt out of that too. Get some pipe thread compound that is rated for gas and put it all back together.

Do a general inspection and replace anything that is suspect. You can still get things like thermocouples, safety valves, heating elements, orifices, and thermostats to name a few.

While I had my refer out I built some baffles to direct the air to the coils and from the coils to the vent. These refers will benefit from better airflow, the less dead space the better.

I hope this helps. Let us know how it turns out.
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Old 10-23-2006, 07:26 AM   #7
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A site for good info...

I sounds like Chris had good luck with burping his refrigerator. We are pretty new to our unit that has a nice 3-way that would cost about 3k to replace. I had hear murmurs of woe regarding the importance of leveling. We had no current problems, but I wanted to get expert advice. I found this site and called. The guy was very helpful in explaining how things work and actually explained why burping can actually be the end of a unit.

www.rvfridge.com/ He cautioned us not to run it unless it is w/ 3-5% of level. Now our unit is probably original to the '83 310 we have, so I am amazed that it has been working so well. The website had some good education pages on the subject. I think there are several re-manufacturers out there, so if you ever have to replace, it would be worth comparison shopping.
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Old 10-23-2006, 08:03 AM   #8
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when it comes down to burping, its time for a new fridg. its has leaked or it is stoped up.
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Old 10-23-2006, 08:33 AM   #9
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Thanks Chris, Sounds like you had good luck so I'm hopeful. I've turned it upside down and right side up about 3 different cycles, and still nothing. The coils heat up in some areas (very hot) and some areas not at all. I hear fluid moving around as I turn it over. My assumption is that there is a blockage (no ammonia smell) and more than likely located where the coils are not heating. I'll try this procedure a few more times then try it propane. If not well -new fridge. But I'm not going down with out a fight.
Auretrvr, thats for the info. on rvfridge.com I'll check it out.

Steve
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Old 10-23-2006, 09:33 AM   #10
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steve

hate to be the grim reaper but, the gurgling you hear is the remainder of the liquid being boiled off after the hydrogen charge is gone.

when mine failed it had no smell and just gurgled... DOA.

john
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Old 10-23-2006, 09:39 AM   #11
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No Problem Steve, The only part of the coils that should be getting hot is the big one on top. The fins underneath would warm but not hot and the tubing near the bottom ought to be reasonably cool.

Oh yea, I forgot to mention that the older the refer the more important it is to have it level.

Other than an amonia leak, if anyone before you ran it out of level for a long time it could have crystalised the solution inside and that also will make a refer DOA.

Good luck !
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Old 10-23-2006, 11:42 AM   #12
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Burping my Fridge

Steve,

If you decide to replace your fridge, Vintage Trailer Supply has a good price!

Good luck,

Lee Pace
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Greenville, Tx
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Old 10-23-2006, 12:24 PM   #13
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I have a few minute break at the office so I thought I would check my post.
Boy, I love getting good news when I'm working! We got our overlander from the original owners who were caravaners with Wally in the 60's. They took great care of her. I have been able to get everything else functional except the refer. So other than polishing this has been a priority. Well I guess having sit for 20 years is not a good thing. I would really like to keep the original but if she's dead she's dead! I'm still going to exhaust all avenues before I sign the certificate.
Thanks
I keep the post posted.

Steve
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Old 10-23-2006, 12:36 PM   #14
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Here is an interesting thought
On a 63 Bambi the fridge is in the back center, so level side to side is usually not a problem
How about front to rear level? How critical is that?

My 1963 fridge looks great and lights good, and has no signs of rust or leakage, it sat for 26+ years before I lit it, and it does not cool. It is propane only and has no provision for electric.
I plan to burp it when I have some time this winter and hope it works.
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