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Post by coldspaces on Mar 25, 2014 1:19:14 GMT
Well I finally got the cover off of the charge connection tonight. Put the charge adapter on it in a 50F garage and found it was at 20 psig as it should be at 50F. Started it up and it rapidly climbed to 110 psig. I tipped it back and forth last night some more and am sure the float is moving when I do it. Looks like a plugged orifice under the float for sure. Only thing that makes we wounder is that Travis said this unit worked till the previous owner laid it down for a couple of months. Doesn't look like it is full of oil in the float though. After shutting off the charge valve I found the gauge line full of liquid so2 not much oil though. Garage is now airing out lol.
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Post by jhigdon2 on Mar 25, 2014 1:25:01 GMT
I think your definitely correct. I seen a couple that were clogged completely and this is how they behave.
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Post by coldspaces on Mar 25, 2014 1:37:39 GMT
I think your definitely correct. I seen a couple that were clogged completely and this is how they behave. Afraid so, was hopping it was oil logged some way but doesn't look like it will be that easy. This may just end up being the first ball top 134a conversion as I have no so2. |
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Post by Travis on Mar 25, 2014 1:39:13 GMT
We'll have to find you some.
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Post by cablehack on Mar 25, 2014 2:08:01 GMT
What about trying the piano wire method of unblocking, as described in the William Holladay article?
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Post by coldspaces on Mar 25, 2014 4:49:53 GMT
What about trying the piano wire method of unblocking, as described in the William Holladay article? You know what I think I just might try this, with a twist I learned from a CA expert. I reread the piano wire method and thought no way am I just drilling a hole and letting in air or letting out to much so2. Then tonight while looking inside at the evap and lines it dawned on me. All I need is to make it be in a vacuum and fill it with dry nitrogen above atmosphere. Thank you so much for the idea. If I can invert the globe top in a freezer and chill it to -10F it will be in a 10" or more vacuum. Lines and evap will be facing up to work on. Would then add a temporary line tap on suction to be sure evap is pressurized with nitrogen before cutting line under float. Clean float with "piano wire". After surgery set upright and let warm thoroughly. Vent non condensable gas(nitrogen)and watch it get cool. Also what do you think would happen if I added a small filter drier between the float and evap? |
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Post by cablehack on Mar 25, 2014 6:56:08 GMT
I can't wait to see this! Freezing a CG so you can work on it fully charged  Sounds like a good candidate for a filter drier experiment - you can always remove it if the pellets dissolve. |
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Post by coldspaces on Mar 25, 2014 12:19:23 GMT
I can't wait to see this! Freezing a CG so you can work on it fully charged Sounds like a good candidate for a filter drier experiment - you can always remove it if the pellets dissolve. I will use a solid core drier if possible. Now I have a problem with my idea. The only freezer I might have that it will fit in is the IH I already put in the basement. I am not going to do this for the first time in my house. Looks like maybe we will all need walk in freezers now. |
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Post by coldspaces on Mar 27, 2014 1:38:12 GMT
I need a larger freezer    Had it like this all night with the freezer turn as cold as it will go. It got down to 10 psig.  Now I have a camping fan in the bottom of the freezer and a housing around the top.  Lowest it has made it so far is 3 psig.  |
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Post by cablehack on Mar 27, 2014 5:23:55 GMT
That's classic! . It actually looks quite promising. A few less psi and it's ready for work. |
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Post by birkie on Mar 27, 2014 11:23:45 GMT
Insane, in a good way! If this setup reaches an equilibrium that doesn't quite make a vacuum, maybe some dry ice could help push it over the edge?
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Post by coldspaces on Mar 27, 2014 12:21:02 GMT
Insane, in a good way! If this setup reaches an equilibrium that doesn't quite make a vacuum, maybe some dry ice could help push it over the edge? I considered this but not sure if I could see to work in the fog it may create. That plus if any so2 comes out with the nitrogen I will need a gas mask to keep my eyes open and to breathe. If I did get this below 0 and make repairs I may only clean the float. If I add the filter drier and tube I have ready it will take about 4 oz of refrigerant to fill them. That will make it low on refrigerant for sure and I have no s02 to top it off with. I knew I should have recovered the so2 from Travis's beast that held 13 lbs. |
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Post by allan on Mar 27, 2014 12:25:15 GMT
Insane, in a good way! If this setup reaches an equilibrium that doesn't quite make a vacuum, maybe some dry ice could help push it over the edge? I considered this but not sure if I could see to work in the fog it may create. That plus if any so2 comes out with the nitrogen I will need a gas mask to keep my eyes open and to breathe. If I did get this below 0 and make repairs I may only clean the float. If I add the filter drier and tube I have ready it will take about 4 oz of refrigerant to fill them. That will make it low on refrigerant for sure and I have no s02 to top it off with. I knew I should have recovered the so2 from Travis's beast that held 13 lbs. Where is the drier going? |
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Post by coldspaces on Mar 27, 2014 12:36:18 GMT
I considered this but not sure if I could see to work in the fog it may create. That plus if any so2 comes out with the nitrogen I will need a gas mask to keep my eyes open and to breathe. If I did get this below 0 and make repairs I may only clean the float. If I add the filter drier and tube I have ready it will take about 4 oz of refrigerant to fill them. That will make it low on refrigerant for sure and I have no s02 to top it off with. I knew I should have recovered the so2 from Travis's beast that held 13 lbs. Where is the drier going? I was going to get crazy and see what effect it has if I put it in the line from the float to the evap. I know it should be before the float but I can't get to that with it assembled. Not sure what effect it would have on refrigerant flow if installed there. |
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Post by cablehack on Mar 27, 2014 22:18:49 GMT
It would appear that a small amount of SO2 lost during the work can be replaced with R12 - the manual actually suggests doing this (see page 152 of the manual).
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