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Post by solarmike on Mar 31, 2019 22:54:48 GMT
Ok I'm looking at a 1933 CA-2-A1 at least that's what it looks like to me... It looks like a closed in DR not the one that looks like a CK.... Anyway the guy says it runs but it doesn't cool what could be the problem?? Is there anything else that gives problems with this model? It looks to be in great condition...
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Post by ChrisJ on Mar 31, 2019 23:25:00 GMT
Doesn't cool at all?
Broken line most likely the liquid line going to the evaporator.
Any pictures?
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Post by solarmike on Mar 31, 2019 23:40:43 GMT
Doesn't cool at all? Broken line most likely the liquid line going to the evaporator. Any pictures? Hi, Yes I have a pic of it. Let me get it loaded to my pic server... |
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Post by cablehack on Mar 31, 2019 23:45:30 GMT
Excess NCG will shut the float valve and stop refrigerant flow, and at the other extreme a very worn float valve won't provide the pressure difference required, and cooling will be poor. As Chris says, broken high side lines are not uncommon with these machines, because of how they are positioned. When someone lifts or replaces the top without taking care, the tube will get damaged. Expect to replace the oil heater, although once in a while an original is OK.
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Post by solarmike on Apr 1, 2019 0:01:04 GMT
Here is a pic of the one I'm looking at.....  |
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Post by turbokinetic on Apr 1, 2019 1:17:07 GMT
Ok I'm looking at a 1933 CA-2-A1 at least that's what it looks like to me... It looks like a closed in DR not the one that looks like a CK.... Anyway the guy says it runs but it doesn't cool what could be the problem?? Is there anything else that gives problems with this model? It looks to be in great condition...
Wow that one looks to be a thing of beauty!
If it "runs but does not cool;" according to the seller - be sure it's actually running and not just humming. I've seen that a time or two.
To add to what Chris and Cablehack have already said; assuming it is actually running, we would need more info on several aspects of it to help troubleshoot it.
-Does it sound like bubbles blowing in the evaporator constantly, beginning right after powering it on? -Does it cool at all? In other words does it get cool but not sweat; sweat but not frost; etc. -How does the compressor sound? -Power demand, as in watts? -Do a test for high NCG overpressure. With unit stopped and cool, you should be able to see oil draw into the service port if you crack it open. If pressure escapes when the port is opened while stopped and cold; then it has severe NCG problems.
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Post by solarmike on Apr 1, 2019 1:50:43 GMT
^^^^WOW^^^^^ Man that's a lot to figure out but that's why I asked... It's 5 hours away so checking those things might be tough..... What are some simple things I could ask the owner to check? Does putting hot water in the freezer to hear bubbles work on these models to see if it's charged???
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Post by turbokinetic on Apr 1, 2019 2:20:47 GMT
^^^^WOW^^^^^ Man that's a lot to figure out but that's why I asked... It's 5 hours away so checking those things might be tough..... What are some simple things I could ask the owner to check? Does putting hot water in the freezer to hear bubbles work on these models to see if it's charged??? I'm not sure how well the hot water in the freezer would work. I didn't notice sounds on the two CA's I worked on but again - my hearing is impaired.
Based on the condition of this fridge; if it runs it's definitely worth acquiring. Once you get it home, then you can make more detailed checks. 
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Post by solarmike on Apr 1, 2019 2:31:00 GMT
I'm not sure how well the hot water in the freezer would work. I didn't notice sounds on the two CA's I worked on but again - my hearing is impaired.
Based on the condition of this fridge; if it runs it's definitely worth acquiring. Once you get it home, then you can make more detailed checks.
Got ya, Is there an easy way to tell if the motor is running or just humming as suggested? |
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Post by turbokinetic on Apr 1, 2019 2:39:38 GMT
I'm not sure how well the hot water in the freezer would work. I didn't notice sounds on the two CA's I worked on but again - my hearing is impaired.
Based on the condition of this fridge; if it runs it's definitely worth acquiring. Once you get it home, then you can make more detailed checks.
Got ya, Is there an easy way to tell if the motor is running or just humming as suggested? Many of us can tell by the sound. The amp draw also tells you. If it's around 8 or more amps, it's just humming. Unplug it. If the control is good, it will trip on overload after a few moments if it's not running. |
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Post by solarmike on Apr 1, 2019 3:25:39 GMT
Many of us can tell by the sound. The amp draw also tells you. If it's around 8 or more amps, it's just humming. Unplug it. If the control is good, it will trip on overload after a few moments if it's not running. Ok now I'm understanding much better....
So is there anything I can ask the seller to do?? like plug it in and see if it trips or would it be better to not stress the motor anymore??
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Post by birkie on Apr 1, 2019 3:40:09 GMT
^^^^WOW^^^^^ Man that's a lot to figure out but that's why I asked... It's 5 hours away so checking those things might be tough..... What are some simple things I could ask the owner to check? Does putting hot water in the freezer to hear bubbles work on these models to see if it's charged??? Hot water will work, but can give false negatives. i.e. if you hear bubbles, it definitely has refrigerant. But if you don't hear anything, it's possible the refrigerant has mostly migrated to the sump. Maybe ask them to keep it plugged in and off, so that the heater can warm up the sump. Of course if you do that, Murphy's Law suggests that the heater will be dead. Don' worry about attempting to turn it on. A couple seconds won't kill anything even if it's seized or has a bad relay. |
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Post by cablehack on Apr 1, 2019 7:39:07 GMT
Nice fridge! It has the expensive porcelain cabinet too. If it's stalled it makes a loud and unpleasant buzzing sound. If the compressor runs, it's a soft purring sound which is barely audible. That is, unless the heater doesn't work or hasn't warmed up, or it's full of NCG. Then it makes a metallic rattling sound on top of the normal purring sound.
If the owner has run it for at least a few minutes without the control tripping, it would be safe to say the compressor itself is good.
If the control trips, there's no tests that a non technical owner could do which would tell if the motor is seized, or it's just got cold oil or it's full of NCG - you could only guess if its worth going to get it.
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Post by solarmike on Apr 1, 2019 12:22:43 GMT
Thank you all for all of your help... I think I'll ask the guy a couple more questions today...
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Post by turbokinetic on Apr 1, 2019 16:35:41 GMT
Thank you all for all of your help... I think I'll ask the guy a couple more questions today... Great; hope to hear it's going to live!
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