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Post by allan on Sept 30, 2013 22:59:06 GMT
How do you properly clean the SO2 float seat and needle? Is it the same process for the DR and CK machines? I understand that you cut the liquid feed tube just below the Everdure tube and stick a wire up there but is that all it takes? What are we removing from the seat and do you need any type of solvent to fully clean the seat?
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Post by jhigdon2 on Oct 1, 2013 1:42:49 GMT
Cut the line leaving about an inch. And Just run a wire through the orifice. They seem to vary in size depending on how big the machine is. Usually a .010-.012" wire plucked from a wire brush is just right for a DR or CK machine. I bigger wire of .018-.020 for the double evap machines is sufficient. Orifice seems to clog up with a hard carbon like deposit over many decades,and this little trick seems to work fine. That all there is to it. I've never had problems with the needle and seat on S02 machines. They get clogged but don't seem to wear like CA needle and sea does. After joining liquid feed tube back together just evac and refill and machine will work well again.
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Post by coldspaces on Oct 1, 2013 4:13:27 GMT
Some of you know from the Flickr group that I emailed Supco and asked them about using Supco 88 with so2 and MF. Their response was it should cause no problems with either refrigerant. They claim it can clean out cap tubes which I have not really used it for myself but it sure can free up sticking compressors from what I have seen in my 36 years in the field. Can't say this is safe for our refrigerating machines or not with their cotton and wood insulated windings and such. Having owned only one Monitor top who's float and compressor work good still I have never had a need to put any Supco 88 in it. After seeing how good it can un-gum compressors if I had a restricted float seat I would sure be tempted to try it as opposed to having to open the system. (edit: would need an oil pump to put this in a charged system without opening it) Here are some links. MSDS- till tonight I never really knew what was in Supco 88 but the MSDS tells the ingredients, look's like some of them go through some special processes. www.supco.com/images/pdfs/MSDS%20Sheets/Supco%2088%20MSDS.pdfwww.supco.com/Chemicals%20pg7.htm |
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Post by allan on Oct 23, 2013 21:30:56 GMT
I have heard about cleaning plugged up seats on DR machines but never on a CK. Anyone had any experience with a CK seat?
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Post by jhigdon2 on Oct 24, 2013 6:22:48 GMT
Yes. CK seats are very often clogged too. If it struggles to make trays of ice cubes or intermittently defrosts accompanied by a strange louder than normal compressor noise(suction regulator open) than it's time to clean the orifice. Also CK's have a fairly healthy boil in the evap when running. If it seems like it's to quiet than it may need cleaned.
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Post by ChrisJ on Oct 25, 2013 20:57:08 GMT
Wonder if a cap tube conversion would help a DR or CK as much as it does the CA?
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Post by allan on Oct 26, 2013 0:21:06 GMT
Wonder if a cap tube conversion would help a DR or CK as much as it does the CA? Good question! I have been wondering the same thing. Has anyone performed a cap tube on a SO2 machine |
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Post by cablehack on Oct 26, 2013 1:19:27 GMT
It has been done, but the only instances I've heard of have been refilled with something besides SO2 afterwards.
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Post by jhigdon2 on Oct 26, 2013 1:41:44 GMT
I have done cap tube conversion once on a CK machine and once on a DR. Works good but not the same impressive performance gain as when performed on the CA. I switched them both back to float system because I was unsure about reliability. S02 much dirtier system than methyl formate or modern refrigerants and just wasn't sure how long cap tube would last without clogging. The float system on the DR's and CK's are very reliable and seem to have been free of the problems that plagued the CA's
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Post by ChrisJ on Oct 26, 2013 2:40:03 GMT
So are DRs for the most part as reliable as CKs and CAs were essentially an embarrassment to GE? Or were DRs unreliable, CAs were so so and CK's were the magic machine?
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Post by allan on Oct 26, 2013 16:23:09 GMT
So are DRs for the most part as reliable as CKs and CAs were essentially an embarrassment to GE? Or were DRs unreliable, CAs were so so and CK's were the magic machine? My two Crosley belt drive machines are SO2 with cap tubes. After disassembling the first one I was amazed at the internal condition of the components. They also have easily removable strainers before the cap tubes. Maybe GE was not as cautious about system internal cleanliness as Crosley since they had floats instead of cap tubes |
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Post by jhigdon2 on Oct 26, 2013 22:58:53 GMT
I think what makes the GE systems a little dirty could be byproducts from the motor being exposed to the S02. Over many years these tend to collect as deposits inside the piping, especially the high side of the system,float valve ect.
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Post by jhigdon2 on Oct 26, 2013 23:04:42 GMT
All DR's CK's and CA's seem to be about as reliable as the other for the most part. Each one of them is a little different breed all it's own,and exhibits different personality traits. I'm not sure if a refrigerator bought new today would still be running 80 years from now,so I would have to say that all 3 designs were a home run.
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Post by cablehack on Oct 27, 2013 9:34:05 GMT
So are DRs for the most part as reliable as CKs and CAs were essentially an embarrassment to GE? Or were DRs unreliable, CAs were so so and CK's were the magic machine? My two Crosley belt drive machines are SO2 with cap tubes. After disassembling the first one I was amazed at the internal condition of the components. They also have easily removable strainers before the cap tubes. Maybe GE was not as cautious about system internal cleanliness as Crosley since they had floats instead of cap tubes I suspect the reason for GE using float valves was due to patents. The capillary tube was already patented by someone else (I think Crosley? - it's mentioned in Coldspace's scanned notes). That GE didn't like using other people's patents is evident also from a reluctance to use Freon 12. GE did patent a static high side restrictor metering device, but is sufficiently different to avoid a patent conflict. |
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Post by allan on Oct 27, 2013 13:23:49 GMT
I think what makes the GE systems a little dirty could be byproducts from the motor being exposed to the S02. Over many years these tend to collect as deposits inside the piping, especially the high side of the system,float valve ect. So do you think it was entirely the motor heat causing the less cleaner system or a combination of the heat and maybe the motor insulation breaking down chemically with the So2? |
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