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Post by ChrisJ on Mar 28, 2016 1:56:40 GMT
Is that actually drawing 300+ watts when it's running or is that volt amps? Sorry that's just an old AC volt only meter I got at a flea market a while back. Its just sitting there for show and not hooked up. It does still work and I have been advised that there were not many like it made. Oh I know but a post from you back in October said it was drawing something like 320W?
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Post by coldspaces on Mar 28, 2016 2:22:32 GMT
Sorry that's just an old AC volt only meter I got at a flea market a while back. Its just sitting there for show and not hooked up. It does still work and I have been advised that there were not many like it made. Oh I know but a post from you back in October said it was drawing something like 320W? Yes I guess it was drawing about 350 watts when running. Now that it is indoors and ran all night and day without being opened I can tell you that it runs for about 2 mins. 45 sec. Then is off for about 15 mins.
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Post by ChrisJ on Mar 28, 2016 2:33:18 GMT
My god man, that's going to cost $8-10 a month to run! Seems like it runs really quiet, has a good sound to it.
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Post by coldspaces on Mar 28, 2016 3:02:19 GMT
My god man, that's going to cost $8-10 a month to run! Seems like it runs really quiet, has a good sound to it. I won't run it full time. I really need to buy one of those kill o watt meters to get a better idea.
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Post by ChrisJ on Mar 28, 2016 10:51:47 GMT
My god man, that's going to cost $8-10 a month to run! Seems like it runs really quiet, has a good sound to it. I won't run it full time. I really need to buy one of those kill o watt meters to get a better idea. If you only measured current draw and multiplied it by voltage the unit is likely only drawing 170-190 watts. Is it an 1/8HP motor?
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Post by coldspaces on Jun 3, 2016 3:35:55 GMT
So I got around to giving this Coldspot a turn on the Kill A Watt. It is in my air conditioned basement at about 72F and relatively low humidity. The doors were only opened a few times during the test
And the numbers are 217 hours of run time 9.4 days 13.04 Kwh x .119 per KWH = $1.55 cost to run for 9.4 days
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Post by ckfan on Jun 3, 2016 13:41:15 GMT
Gill, You capitalist pig! You should be ashamed of yourself. Letting such a hog run free in its sty! That comes to almost $5 a month! That is just absurd for such a tiny refrigerator with only two doors. Its not like it gets cold enough to freeze liquor in only 3 minutes of running! I wouldn't be surprised if the power station for your neighborhood had to turn on the nuclear auxiliary reactor! Seriously though, that is pretty darn good for an open drive / direct drive unit. I honestly expected it to use more power. When you turned it on to demonstrate it for me I was surprised at how quiet / how quickly it got cold. It was so cold that it hurt my hand after only a few minutes of running. I will have to get my newer coldspot up and running soon. What I'm wondering is if sunbeam was still making the compressor at the point mine was made or if the compressor in mine was manufactured by seeger like the later ones were. It almost looks like a seeger compressor (the old rotary type) that appliances like my 1979 whirlpool used for years afterwards. Bonus points to those of you who can identify what movie this picture came from! To view the photos in this post, please follow this link: drive.google.com/open?id=0B8_jm7K-ahMaT3pMZU03SElkSXc
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Post by 100yearfridge on Jun 26, 2018 23:22:31 GMT
Great thread, Gill; I really enjoy the variety of refrigerator technologies of the era! Movie guess: Ghostbusters? The containment field?
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Post by ckfan on Jun 27, 2018 2:22:03 GMT
Yes, this is a very interesting model. I’ve seen it operate and it is very impressive. Quiet and quick comes to mind.
Oh, and the picture comes from national Lampoons Christmas Vacation!
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Post by turbokinetic on Jun 27, 2018 2:39:17 GMT
That Coldspot is so impressive! The wide 2-door cabinet, compressor compartment at the top, and the awesome open drive compressor skid all add up to make this a real showpiece!
It's amazing that they went this close to a hermetic compressor, but stopped JUST SHORT of it. I take it that the motor's shaft is a custom piece which goes inside the compressor through the seal, to drive the rotor? Or is there a coupling between the two?
Looking at the compressor cutaway views on the earlier pages, it brings to mind the old 1970's - 1980's Bosch rotary compressors that BMW used for their car air conditioning. They hade more vanes in them, but worked on exactly the same principle.
That fridge sure is smooth sounding in the video, as well.
So happy that you repaired and got this up and running!
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Post by ckfan on Jun 27, 2018 2:54:07 GMT
The really neat thing is that the compressor was later made into a hermetic version. I have a 30s cold spot, not sure of the exact age, which has one. They are super reliable and smooth. They also got used in many products when Seeger, the company who made the cabinets, started making whirlpool products. They got used up into the 80s.
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Post by turbokinetic on Jun 27, 2018 2:56:26 GMT
The really neat thing is that the compressor was later made into a hermetic version. I have a 30s cold spot, not sure of the exact age, which has one. They are super reliable and smooth. They also got used in many products when Seeger, the company who made the cabinets, started making whirlpool products. They got used up into the 80s.
Wow that's cool that they continued the evolution. I bet in a hermetic you can barely hear that at all.
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Post by ckfan on Jun 28, 2018 1:35:46 GMT
The really neat thing is that the compressor was later made into a hermetic version. I have a 30s cold spot, not sure of the exact age, which has one. They are super reliable and smooth. They also got used in many products when Seeger, the company who made the cabinets, started making whirlpool products. They got used up into the 80s.
Wow that's cool that they continued the evolution. I bet in a hermetic you can barely hear that at all.
You are absolutely right. It is actually more quiet than a scotch hole compressor...and that’s saying something. Mine has cooling fins around it which make it odd looking but any of the other later versions I’ve seen don’t. I had a 79 avocado green whirlpool that used one. Aside from the start relay going out it was great. All you could hear was a soft pulsating whine and the fan.
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Post by douro20 on May 30, 2023 2:26:23 GMT
Mine is not the same as shown. Smaller vertical receiver. And they were a dry system with the automatic expansion valve. Also called a constant pressure valve. And they were designed to push the oil through the cooler and back to the compressor by pressure. Early ones had the oil cooler in the condenser. Mine has a curled tube fasten to the base under the compressor. I will get a pic if possible of it. It's a 1/5 hp at 1725 rpm amp 3.5 amp Isn't there one pass of the oil cooler in the bottom of the condenser coil? How does it sound running? Is there any vibration in the compressor? I know it's been a few years but some rotary A/C compressors have lines for oil cooling which will either run into a dedicated coil on the condenser or into a small heat exchanger on the outside of the compressor.
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Post by turbokinetic on May 30, 2023 9:52:58 GMT
I know it's been a few years but some rotary A/C compressors have lines for oil cooling which will either run into a dedicated coil on the condenser or into a small heat exchanger on the outside of the compressor. Welcome to the forum! Yep, many makers of high-side housing compressors have used this design. In the old days (and maybe still so) they called it a de-superheat coil, or a precooler. It takes discharge gas, cools it, then returns it to the compressor housing to cool the motor. Frigidaire Meter-Miser and Seeger rotary were two of the early designs like this. Tecumseh had a different design, with low side housing. The high side discharge went through the precooler, and then returned to a heat exchanger coil inside the bottom of the compressor sump to cool the oil. It then went on to the main condenser. These were used on static cooled compressors with lower medium temp applications, it seemed. Sincerely, David
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