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kioticoachman

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Posted: 05/06/19 09:25pm Link  |  Quote  |  Print  |  Notify Moderator

From reading the postings that our forum family submitted on a previous RM2652 querry all indications are that the cooling unit is also my problom [emoticon].

Is there a quick cost effective way to go? Called a couple of RV dealers in the area and an after market cooling unit is available. But pricey for this SC at this time.

Are there any McGyvers out there that may have other thoughts or suggestions? Any and all suggestions an assistance would be very much appreciated. Thank you very much! KC - USAF 62-66

DFord

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Posted: 05/06/19 10:15pm Link  |  Quote  |  Print  |  Notify Moderator

Sorry to say, there's no magic bullets when it comes to RV refrigerators. Make sure whoever you take it to is experienced. Your profile doesn't indicate what part of the country you're located so no recommendations.

Way back when I first learned about absorption refrigerators the only thing to try with a malfunctioning unit was to turn it upside down and let it set for 24 hours before setting it rightside up, letting it rest awhile and trying it again. I seldom worked and probably isn't worth the effort.


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kioticoachman

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Posted: 05/07/19 06:37am Link  |  Quote  |  Print  |  Notify Moderator

DFord wrote:

Sorry to say, there's no magic bullets when it comes to RV refrigerators. Make sure whoever you take it to is experienced. Your profile doesn't indicate what part of the country you're located so no recommendations.

Way back when I first learned about absorption refrigerators the only thing to try with a malfunctioning unit was to turn it upside down and let it set for 24 hours before setting it rightside up, letting it rest awhile and trying it again. I seldom worked and probably isn't worth the effort.


Absorption refrigerators is what they're called, eh? Interesting! Appreciated the reply and suggestion. Thought about attemping to remove the cooling unit but not sure how/what this May involve?

I presume that an aftermarket replacement cooling unit can be bought as this is one of the options the RV dealer suggested plus labor to install it?

Not sure if the cooling unit can be refilled? BTW I'm located near Danville, Pa. Thank you for taking the time to reply. Every reply is important and will help in sorting this out. KC

dougrainer

Carrolton, Texas

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Posted: 05/07/19 07:21am Link  |  Quote  |  Print  |  Notify Moderator

RV cooling units CANNOT be refilled. They must be rebuilt and then filled with specialized equipment. IF the Ammonia has not leaked out and the Cooling Unit is bad, that means it is BLOCKED. Rebuilders cut out the Blocked tubing and weld new tubing in place and then charge the cooling unit. Doing the work yourself, rebuilds are a great way to fix your RV refer. Not hard to do, and they come with directions. Doug

dougrainer

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Posted: 05/07/19 07:23am Link  |  Quote  |  Print  |  Notify Moderator

Absorbsion cooling has been around for over 100 years, not just for RV's. Doug

kenbert

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Posted: 05/07/19 11:12am Link  |  Quote  |  Print  |  Notify Moderator

DFord wrote:

Sorry to say, there's no magic bullets when it comes to RV refrigerators. Make sure whoever you take it to is experienced. Your profile doesn't indicate what part of the country you're located so no recommendations.

Way back when I first learned about absorption refrigerators the only thing to try with a malfunctioning unit was to turn it upside down and let it set for 24 hours before setting it rightside up, letting it rest awhile and trying it again. I seldom worked and probably isn't worth the effort.




I turned my Dometic upside down twice in the twelve years I owned it, worked both times. this last time the cooling unit developed a pin hole from rust. Putting in a Residential.


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jkwilson

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Posted: 05/07/19 02:17pm Link  |  Quote  |  Print  |  Notify Moderator

dougrainer wrote:

RV cooling units CANNOT be refilled. They must be rebuilt and then filled with specialized equipment. IF the Ammonia has not leaked out and the Cooling Unit is bad, that means it is BLOCKED. Rebuilders cut out the Blocked tubing and weld new tubing in place and then charge the cooling unit. Doing the work yourself, rebuilds are a great way to fix your RV refer. Not hard to do, and they come with directions. Doug


They can be refilled. Check out the place in Kentucky that does the training. They sell equipment and provide training to do it.


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Chum lee

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Posted: 05/07/19 02:30pm Link  |  Quote  |  Print  |  Notify Moderator

See/Search YouTube for tutorial videos on replacing the cooling unit on the Dometic RM 2652. There are many very good ones.

Search: "Absorption cooling unit replacement"

Chum lee

dougrainer

Carrolton, Texas

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Posted: 05/07/19 05:46pm Link  |  Quote  |  Print  |  Notify Moderator

jkwilson wrote:

dougrainer wrote:

RV cooling units CANNOT be refilled. They must be rebuilt and then filled with specialized equipment. IF the Ammonia has not leaked out and the Cooling Unit is bad, that means it is BLOCKED. Rebuilders cut out the Blocked tubing and weld new tubing in place and then charge the cooling unit. Doing the work yourself, rebuilds are a great way to fix your RV refer. Not hard to do, and they come with directions. Doug


They can be refilled. Check out the place in Kentucky that does the training. They sell equipment and provide training to do it.


READ my post. You cannot refill like a AC system. IF the unit has leaked, you must weld new tubing(fixing the leak) and then refill. IF the unit is blocked you must cut out the blockage weld in new tubing and then fill. They do NOT have a leak unless the tubing has failed. Doug

DFord

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Posted: 05/07/19 07:07pm Link  |  Quote  |  Print  |  Notify Moderator

Even a trained technician that knows what he's doing must be very cautious when replacing the substances required to make these things work. They must put in the proper amounts of ammonia and water with a little chromate as a wetting agent into the system, then pull a very deep vacuum before pressurizing it with hydrogen. All those ingredients but the water hazardous materials and have to be handled with the utmost care. One spark and you could lose an arm or worse - many have. That's why you won't find just anyone repairing these refrigerators. Leave it to the shops that specialize in this work and be thankful for them.

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