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1948 Frigidaire just died, noooo!!!  Rate Topic 
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 Posted: Mon Aug 23rd, 2010 10:24 pm
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Rickenbackerman
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Greetings all!

I inherited my wife's grandmothers 1948 fridge about five or six years ago, it's been working pretty well until the beginning of this summer.  Over the course of the last two months it's been getting warmer and warmer inside.  I can hear *something* squirting its way through the evaporator but the old gal is just not getting cold at all anymore and the compressor runs constantly.  Even when it did work, ice would only accumulate right where the high side enters, so am I to suspect a veeery slow freon leak?

What to do with this thing?  The problem is its been in the family since it was bought new, only been moved three times in its life!  She's also in MINTY condition, so I really want to get her fixed!

Rob

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 Posted: Mon Aug 23rd, 2010 11:07 pm
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RegUS_PatOff
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Rickenbackerman wrote: ... ice would only accumulate right where the high side enters, so am I to suspect a veeery slow freon leak?

yes,

depending on State Laws, may be able to just have the Freon "topped-off"  if the leak is sloooooow...

Or may have the system repaired depending on if they can find the leak..



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 Posted: Tue Aug 24th, 2010 02:48 am
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Rickenbackerman
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I tried firing it up again tonight, after about 45 minutes the evaporator started to cool off, but once again frosting only occured on the high side inlet. I guess I'll start calling around to see about a recharge. Since it's a hermetic system I assume they'll need to tap into the low side somehow? But that raises a question, if it is a hermetic system where did the freon go? I figure if there was a leak all of it would have leaked out, but it still 'sorta' works?

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 Posted: Tue Aug 24th, 2010 05:12 pm
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Rickenbackerman
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Here's a semi-decent pic of the old girl without the kick panel.  This pic doesn't do it justice, though, it's really in fine condition.


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 Posted: Tue Aug 24th, 2010 09:30 pm
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appl.tech.29501
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With a slow leak it will act exactly as you described, as you stated it has taken some time to get to the point where it is now. Probably won't find too many people that will touch that unit. It should be a R12 unit and obviously there are no parts available for it so unless the leaks easy to find and is accessable your probably out of luck. All you can do is try though but you may spend $300 to $500 if it can be repaired.



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 Posted: Tue Aug 24th, 2010 09:58 pm
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or if it's a visible (external) leak at a joint, it could be soldered, or whatever ..



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 Posted: Thu Aug 26th, 2010 10:23 pm
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RJ Kanary
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Does this have a capillary tube?If so, is that the location of the frost ?

RJ



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 Posted: Thu Aug 26th, 2010 11:11 pm
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Rickenbackerman
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Yes, the small tube (high side) at the inlet of the evaporator.

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 Posted: Sat Aug 28th, 2010 04:22 pm
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RJ Kanary
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        I am not as experienced in mechanical refrigeration as other members of this Forum.Things that I HAVE learned by servicing automotive A/C systems and by keeping my eyes and ears open (and my mouth SHUT. <VBG> ) when people that know more than I do are talking is.................The location of the frost is the location of the restriction in the system.

       In the case of a cap tube system this generally does NOT bode well.It indicates that something is coming apart and generating debris. Some of the real old timers may still have the hydraulic tool used for unblocking plugged cap tubes.If you find some one willing to try to repair this unit, be advised that this approach IF successful would be temporary at best since the root cause hasn't been addressed.

 

         There is also the possibility that something could split open during the repair attempt.{But if the unit is already unserviceable, it's not much of a loss.}



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 Posted: Tue Sep 4th, 2012 08:01 pm
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Rickenbackerman
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Hey guys, I know this thread is old as dirt, but I wanted to update it.

Shortly after I started this thread, I bought a piercing valve and installed it on the low side.  Bought a used set of gauges, shot a little R12 in while the compressor was running, and voila!  Within a few hours it was ice cold with the thermostat on the lowest setting.  Sweet!

It worked great for a few years and then died again this weekend.  The problem this time, however, is much different.  Luckily I wrote down the low side pressures with the compressor on and off before and after I charged it, so I know I should be shooting for around zero psi with the compressor on (not exactly scientific I know).  Now, the evaporator starts to get cold and ices up for about twenty minutes, and then all of a sudden the low side drops to about 25in Hg of vacuum.  Freon almost immediately stops circulating and the evaporator gets warm.

Low side pressure with the compressor off is higher than it was when I charged it last time, so I know it's got plenty of freon.

Am I to suspect a clogged filter/dryer or capillary tube this time?

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