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Post by jhigdon2 on Dec 17, 2014 6:04:24 GMT
The suction line goes to the right tank, not the center of the crossover tube. Seriously?!? What the heck am I seeing here?: View AttachmentThat would explain a lot though......... |
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Post by jhigdon2 on Dec 17, 2014 6:07:05 GMT
That's the everdure tube from the float chamber. I cut it off and installed a strainer and cap tube. The needle and seat were shot. The suction cannot be seen. It's on the right side tank.
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Post by jhigdon2 on Dec 17, 2014 6:26:51 GMT
Would 82F vs. 89F really be so critical? The heater could be run from a Variac to simulate lower power heaters, and thus find out how much heating power it actually needs. |
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Post by jhigdon2 on Dec 17, 2014 6:30:06 GMT
I just looked up the boiling point of MF. It is 89f ! Wow! I had forgotten that. I don't know what made me think it was lower than R123.
No wonder it works better than I thought it would! LOL.
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Post by blackhorse on Dec 17, 2014 13:33:37 GMT
That's the everdure tube from the float chamber. I cut it off and installed a strainer and cap tube. The needle and seat were shot. The suction cannot be seen. It's on the right side tank. Ah. In the photo it looks like it's coming out of the center of the crossover tube. Then I wonder how the oil in the other tank does get to the return line? Does the crossover tube extend into the tank and skim it off? Hmmm-- |
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Post by ChrisJ on Dec 17, 2014 14:33:37 GMT
Guinea pig still running. No issues. Box was getting a little cold. (32 deg) Sorry allan! I readjusted to bring it back up to 38 deg. The 123 seems to work just fine, and there is no apparent difference in sound. It does however require different cap tube. The 30" inches of .031 is a little short I think. Run Time are decent but could be improved a bit. On times are 5 on 10 off. It's just gonna take some time to experiment with oil heat, refrigerant charge and cap tube length. One thing I have noticed is that the unit seems to require less run amps with the 123. 2.38 amps. My other CA2 draws about 2.6 amps. Also noticed evap cools faster and it's almost silent. (Very little bubbling noise). Lol that's a good one about the 32 degrees John! And I am not the only one on this forum that wouldn't touch a beer or soda that was 38 degrees :-). I believe the goal was "if your beverage don't make your head hurt when drinking it, then it's too warm" Yeah, I too think if a drink doesn't give you brainfreeze at least twice it's not cold enough. 32-33F is about perfect.  |
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Post by ChrisJ on Dec 17, 2014 14:36:15 GMT
That's the everdure tube from the float chamber. I cut it off and installed a strainer and cap tube. The needle and seat were shot. The suction cannot be seen. It's on the right side tank. Ah. In the photo it looks like it's coming out of the center of the crossover tube. Then I wonder how the oil in the other tank does get to the return line? Does the crossover tube extend into the tank and skim it off? Hmmm-- No, The oil is mixed all in the refrigerant and travels to the right tank via the passages in the evaporator. The only thing the crossover tube carries is vapor, in theory. If you look at the design of the CA evaporator the outer two passages on the back and front are what feed liquid to the right side. The inner ones all feed back to the left side and my theory is this is to keep liquid lower near the suction line which is located top center of the right tank. Have a look at the pictures found at : monitortop.freeforums.net/thread/325/ca-evaporator-coil-inside-storyDown a few comments there is also one with arrows drawn showing the flow. |
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Post by blackhorse on Dec 17, 2014 19:06:20 GMT
Lol that's a good one about the 32 degrees John! And I am not the only one on this forum that wouldn't touch a beer or soda that was 38 degrees :-). I believe the goal was "if your beverage don't make your head hurt when drinking it, then it's too warm" Yeah, I too think if a drink doesn't give you brainfreeze at least twice it's not cold enough. 32-33F is about perfect. You might think slightly less so if you had had them explode in the refrigerator. >.< Note: less sugary drinks explode easier than sugared soda. One of life's more "What the .... " moments when you open the door and there's foam frozen to every inside surface. Now I have an alarm-- The loud bitching noise whenever there are ice crystals in the lettuce.........  |
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Post by ChrisJ on Dec 17, 2014 20:40:47 GMT
Yeah, I too think if a drink doesn't give you brainfreeze at least twice it's not cold enough. 32-33F is about perfect. You might think slightly less so if you had had them explode in the refrigerator. >.< Note: less sugary drinks explode easier than sugared soda. One of life's more "What the .... " moments when you open the door and there's foam frozen to every inside surface. Now I have an alarm-- The loud bitching noise whenever there are ice crystals in the lettuce......... My wife was yelling a while back about several cans of coke exploding in the fridge. They sat in there too long behind some stuff and BOOF! I didn't change a thing. I have 5 or 6 super thick glass 14oz mugs that I keep in the freezer and pour my drinks into whether it's soda, juice or water. It freezes on the sides of it and gets really cold. I also found drinking with a straw pulls the coldest liquid from the bottom. Now my first monitor top which I'm still waiting to take home, I set for around 32F at the bottom of the cabinet with the dial set in the middle. I like how it looks in the middle. |
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Post by cablehack on Dec 17, 2014 22:16:00 GMT
The suction line goes to the right tank, not the center of the crossover tube. Seriously?!? What the heck am I seeing here?: That would explain a lot though......... Yes, it's a bit of an optical illusion. Here's what a cap tube converted CA looks like from the other side monitortop.freeforums.net/attachment/download/926The flloat valve seat gets cut off at the bottom of the Everdur tube, and a strainer & cap tube are attached to that point. The actual float valve and its needle remain inside but do nothing. |
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Post by ChrisJ on Dec 17, 2014 22:34:57 GMT
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Post by cablehack on Dec 18, 2014 0:04:31 GMT
I deliberately mounted mine horizontally because of the construction of the filter driers I'd used. Horizontal mounting means that the inlet and outlet screens are vertical so any particles coming in are more likely to fall to the bottom rather than accumulating on the screen, blocking it faster. Also, with the drier pellets removed, there is a large void in between screens. When horizontal, this can function as sedimentation chamber so anything getting through the coarse inlet screen settles out before it reaches the finer outlet screen. If verticle, incoming particles would land on the screen straight away. Certainly if I was to use another kind of strainer, I'd look at its construction and imagine how particles might accumulate in it before deciding how to mount it. It may well be vertical is better for some types. |
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Post by allan on Dec 18, 2014 2:05:55 GMT
  Here is is an odd 1 inch crossover tube with suction line in the center. This has the noisiest evap I have heard to date. But it works great and liquid shuts down when load is satisfied. It is a Canadian DK 1 |
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Post by allan on Dec 18, 2014 12:25:17 GMT
Yeah, I too think if a drink doesn't give you brainfreeze at least twice it's not cold enough. 32-33F is about perfect. You might think slightly less so if you had had them explode in the refrigerator. >.< Note: less sugary drinks explode easier than sugared soda. One of life's more "What the .... " moments when you open the door and there's foam frozen to every inside surface. Now I have an alarm-- The loud bitching noise whenever there are ice crystals in the lettuce......... An exploded soda can is how I set my thermostat. I put in a soda and over several days turn down temp a degree at a time. When can freezes and explodes you simply set thermostat one degree warmer and you got it right :-))))). Love em KOLD |
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Post by jhigdon2 on Dec 18, 2014 23:16:50 GMT
Wow guenea pig still runs. Duty cycle wasn't to great, so now I'm refocusing my attention on cap tube cal. Yuck. I think I went to short with the 031 cap. I used my pinch off tool and started Givin it a little pinch. Cycle times immediatly changed for the better. Duty cycle now at 33%. So I'm gonna remove cap tube and start over. Maybe a whole roll of 031, and go from there. I'm shooting for a duty cycle in the low 20% range, then I'll be satisfied. With the lower power consumption of R123 and a duty of let's say 25%. That will make it more efficient than my MF CA, and almost into the CK neighborhood.
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