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General Discussion of preventative/corrective maintenance and other technical issues regarding your coach that are not covered in other Mechanic's Corner categories (ex. refrigerators, water heaters, and compressors).

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  #1  
Old 01-17-2009
jcoop0001
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Default Refridgerator tips

I am replacing my Dometic Fridge in my 83FC35sb

I have the old one out and the new one about ready to go in, but I have a question.

The old setup had a fan blowing on the back of the fridge.
What I am wondering if it would be better to put two or three computer muffin fans up by the roof vent. To me it would move more hot air out of the back of the fridge instead of just moving the air around the back.

Tell me what you think, would like to get the new fridge back in this weekend

Thanks
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  #2  
Old 01-17-2009
AC7880 AC7880 is offline
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Default Computer fans in fridge chimney

I used two Vantec Thermoflow 92mm*92mm*25mm computer 12 volt fans model # TF9225 purchased from coolerguys.com on line. They are thermal sensing and run low rpm when cool and high rpm when hot.

I placed one 1/3 of the way up the chimney, and one 5" below the metal fridge chimney top cover. Both are wired with a on off switch accessible from the outside fridge cover. I turn them off in cooler weather and on in hot weather.

I used two L brackets from Lowes hardware to mount the lower fan, the top fan I was able to hard mount into the existing fridge chimney structure on my 94 BB BMC 37'.

I used wiring loom and brackets to keep the wiring away from the fridge coils. Tough reach up in there to get it done. Would be much easier if your fridge is out.

I thought about mounting both at top, but decided to try and stage the air flow upward. I also was unsure if the two fans would create turbulence between two of them mounted close together, reducing possible air flow.

Seemed to help a good bit in keeping fridge cold in hot weather. There were no previous fridge fans in my coach.

Air delivery is 34.8 CFM low rpm of 1850 , to a high of 58.5 CFM at high rpm of 3100. Noise levels 29 DBA at low rpm and 40 DBA high rpm. I don't notice the sound when they are running.

Dan
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  #3  
Old 01-17-2009
jcoop0001
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Thanks Dan,

I will look into those fans, they sound like a great solution.
I am thinking of mounting all at the top. On allot of the computer equipment that I work on the approach seams to be a bank of fans at the exit of the airflow.
I like the idea of temp sensing.

The fridge is out now so now is the time to do this

thx
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  #4  
Old 01-19-2009
jcoop0001
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Got fans on order, should be in later this week.
When I get them I will take a few pics of the setup and see how it all works out.
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  #5  
Old 07-30-2010
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MRPutz MRPutz is offline
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Default Refridgerator tips

I've been pretty unhappy with the performance of my LP/120v RV refridgerator. Ran accross a tip that seems promising, has anyone tried adding exhaust fans?

http://blog.austinweird.net:80/2010/...igerators.html
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  #6  
Old 07-30-2010
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iamflagman iamflagman is offline
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Default

Quote:
Originally Posted by rtpn60 View Post
I've been pretty unhappy with the performance of my LP/120v RV refridgerator. Ran accross a tip that seems promising, has anyone tried adding exhaust fans?

http://blog.austinweird.net:80/2010/...igerators.html
Mike,

The later model 'Birds cam equipped with refrigerator fans of different designs on different years and models, but they basically do the same thing that your article talks about. Some of our members have even added extra fans too.

Using an internal battery operated fan in the lower shelf aimed up to circulate the colder air that normally drops will also help in the cooling of the contents, these fans can be found at most RV supply store or online, such as www.tweetys.com
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  #7  
Old 07-30-2010
fishfarm fishfarm is offline
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here's one:

http://www.wanderlodgeownersgroup.co...88&postcount=2
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  #8  
Old 07-30-2010
markusfmeyer markusfmeyer is offline
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My friend in his SOB replaced his ammonia based RV fridge when it went with a Novakool, bought it at a boat shop. Much happier with it, cools much better. Pricey though. I find they work much better on electric than propane, and the household type work much better overall.
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  #9  
Old 07-30-2010
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Ernest Ekberg Ernest Ekberg is offline
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I replaced the refers in my last 6 coaches with house types. Never a problem.
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  #10  
Old 07-30-2010
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DTW1086@cox.net DTW1086@cox.net is offline
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Quote:
Originally Posted by markusfmeyer View Post
My friend in his SOB replaced his ammonia based RV fridge when it went with a Novakool, bought it at a boat shop. Much happier with it, cools much better. Pricey though. I find they work much better on electric than propane, and the household type work much better overall.
That is odd, every Propane/ Electric refrigerator I have ever had or been around has always worked better on Propane than Electric. That includes the one in my Bird which does have the fan in the vent.
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