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Old 12-13-2014, 01:18 AM   #131
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Frig

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Originally Posted by Klem View Post
What may explain the wimpy 6.7 is simply it is a helium, ammonia and water frig instead of the hydrogen, ammonia and water like we have used for years. (It may not be but people much smarter then me have come to this conclusion)

The hydrogen has been blamed for fires and manufacturers have turned to helium for some models a few years ago. Helium was a second choice because it simply does not perform as well as hydrogen.

Manufacturers realize it and came up with innovative ideas like removal freezer cabinets to provide more cooling for the refrig area in warmer climates.

The helium absorption refrigs also have a narrower temperature band. So cooling the condenser is most critical.

With this belief I am installing more sophisticated fan control and burner protection. Too high, or low, temperature in the burner area can cause permanent degradation to the cooling performance in all absorption frigs.

Is the RMD8555 a hydrogen .... or a new mix? Some believe the manufacturers know the helium frigs are falling short of user requirements ....

Looking forward to finding some heat in February to test my assumptions
Great ! Is Dometic waiting for our warranties to run out ?
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Old 12-13-2014, 08:28 AM   #132
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Hi Joe,
Great idea, I can hang the yarn on plastic suction cups just like I did on our sail boats, that will bring back fond memories!

Amazing you can get the data logger that inexpensively, I hadn't thought of the RC aircraft suppliers. Maybe I can find turbo charger(s) to install in my new air box and duct

Thanks for sending off the picture, I've got til late January when the weather is good enough for our I-5 boogey to south Cali and then head east : )

Thanks! Mel
I did hear back from my aerospace resource. It turns out that it is not easy to model this since there has not been much study done of this particular problem. It looks like data collection of actual measurements is going to be the best approach.
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Old 12-13-2014, 12:53 PM   #133
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Great ! Is Dometic waiting for our warranties to run out ?
They're doing a ton of work on our fridge right now, which I'll share when it's completed. Essentially, Dometic authorized the local RV shop where I first took the Escape for warranty service, to install a new cooling loop. I still believe that it's worth taking the Escapes in for warranty service (or complaints) while they're still covered. I don't really know if this is going to fix anything, but they are at least finally doing something.
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Old 12-13-2014, 03:40 PM   #134
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Originally Posted by Parker View Post
They're doing a ton of work on our fridge right now, which I'll share when it's completed. Essentially, Dometic authorized the local RV shop where I first took the Escape for warranty service, to install a new cooling loop. I still believe that it's worth taking the Escapes in for warranty service (or complaints) while they're still covered. I don't really know if this is going to fix anything, but they are at least finally doing something.
Great news -- and I, for one, am very anxious to hear the result.

Leon
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Old 12-14-2014, 12:01 AM   #135
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Great ! Is Dometic waiting for our warranties to run out ?
Before there was internet forums like this it was easier for manufacturers to put you off until you gave up ....

Reading this from 2007 will give you a glimpse at what Dometic is up against .. they are struggling to produce a fire safe refrigerator that still keeps your food as cold as required.

http://rx4rv.com/archives/21

I have spent a couple hours in the past two days talking to folks that really understand the problem(s) and have a few solutions. I will be mailing my cooling unit out next week to be tested and hopefully 'repaired'.

It looks promising to me.
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Old 12-14-2014, 12:06 AM   #136
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I did hear back from my aerospace resource. It turns out that it is not easy to model this since there has not been much study done of this particular problem. It looks like data collection of actual measurements is going to be the best approach.
Thanks for checking Joe.

I'm feeling comfortable with my airflow at this time and am trying to do everything I can to make sure the cooling unit is as good as it can be.

Turning over rocks and finding interesting info ....
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Old 12-14-2014, 12:12 AM   #137
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Originally Posted by Parker View Post
They're doing a ton of work on our fridge right now, which I'll share when it's completed. Essentially, Dometic authorized the local RV shop where I first took the Escape for warranty service, to install a new cooling loop. I still believe that it's worth taking the Escapes in for warranty service (or complaints) while they're still covered. I don't really know if this is going to fix anything, but they are at least finally doing something.
Congratulations Parker! Great advice for others to pound Dometic, the problem can no longer be ignored by them!
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Old 12-14-2014, 09:36 AM   #138
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" I will be mailing my cooling unit out next week to be tested and hopefully 'repaired'."
Please provide details.
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Old 12-14-2014, 12:25 PM   #139
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Has anyone drilled holes in freezer compartment ? And had any improvement ?
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Old 12-14-2014, 12:41 PM   #140
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Mine is off to the shop on Wednesday, it will be interesting to see what Dometic tells to do.

Not only does it not cool when air temp is above 75*, the last night off Matagorda Madness I woke to find the alarm had gone off. Went to bed at 10:30, fridge temp was 38*, woke up at 2:30 a temp was 52*...no power on the 120 side. I figured it was too late to save the food, and I wasn't going out to turn on the gas, so I waited til morning. Turned on the gas and in 45 min the freezer temp started to fall but not the fridge. The shop guy just giggled when I said a fridge problem!
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