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Post by turbokinetic on Nov 19, 2018 5:17:16 GMT
I got a CA cooling unit which had been abused and had a broken line. Today I did some tinkering with it.... youtu.be/-6HGACpnjhY
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Post by ckfan on Nov 19, 2018 11:33:20 GMT
Man, that was great. I’m going to have to do the exact same thing when I resurrect a CA that has this exact same problem. I was really hoping that sucking from one unit to the other would work!
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Post by solarmike on Nov 19, 2018 14:20:00 GMT
Man I know I have said it before but I want to say it again thank you..... With all the problems that I have read that people have with MT I was leery of early MT, DRs and such.... But after watching your work and your videos showing how they actually work and that they can be fixed unless the motor is locked up sometimes.. LOL..... Well I'm felling much better about them now......
Thank you
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Post by turbokinetic on Nov 19, 2018 15:30:05 GMT
Man, that was great. I’m going to have to do the exact same thing when I resurrect a CA that has this exact same problem. I was really hoping that sucking from one unit to the other would work! Hi Ray. Yeah the principle of using the good compressor to recover from the bad unit did work; in the sense that it drew the unit down into a vacuum. Unfortunately there was only a trace of methyl formate in the bad unit. It was enough to make some popping sounds in the evaporator, but not enough to be a functional charge. The biggest problem with doing this is, you have to install a low-side port, which will end up being a visible modification and also a potential leak path of air into the system. Once I charge this one, I will be sure to use tools to tighten the cap to ensure it is fully sealed. Man I know I have said it before but I want to say it again thank you..... With all the problems that I have read that people have with MT I was leery of early MT, DRs and such.... But after watching your work and your videos showing how they actually work and that they can be fixed unless the motor is locked up sometimes.. LOL..... Well I'm felling much better about them now...... Thank you
I'm glad you are learning from my videos and feeling better about the early units. I got one of these units to run and cool, but it hasn't been actually put on a cabinet and given a chance to cycle and see how it will perform. So it may have a problem with the float valve or some other issues that aren't showing yet.
The one with the line repair, runs but it's not charged so we really don't know if it will cool or not yet. I don't want to sound doom, gloom, and destruction but also don't want to celebrate just yet.  Time will tell.
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Post by Travis on Nov 19, 2018 15:57:25 GMT
That's neat.
I would bet that whoever tinkered with the donor CA2B, had let the MF out of the charge port. The shelf on the CA evap is a solid piece of metal abd likely wouldn't cause a leak, even with that damage.
That CA2A unit was backwards on a 32 DR cabinet. The seller said he had a second. I suspect the other model was a CK and they made the best and left this for me. Those lines are often damaged by folks not watching them when lowering the unit on a cabinet.
If I lay a fridge over to pull the unit. You lay it on the side opposite the lines to avoid mashing them.
As with everything that David has tackled, you can save more than most would think. You can't save them all. Lord knows I've tried. I suspect you'll use that 34 cabinet under one of the CA2A's and you'll grab that other 33 cabinet when you return for the second CA2A.
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Post by turbokinetic on Nov 19, 2018 16:38:23 GMT
That's neat. I would bet that whoever tinkered with the donor CA2B, had let the MF out of the charge port. The shelf on the CA evap is a solid piece of metal abd likely wouldn't cause a leak, even with that damage. That CA2A unit was backwards on a 32 DR cabinet. The seller said he had a second. I suspect the other model was a CK and they made the best and left this for me. Those lines are often damaged by folks not watching them when lowering the unit on a cabinet. If I lay a fridge over to pull the unit. You lay it on the side opposite the lines to avoid mashing them. As with everything that David has tackled, you can save more than most would think. You can't save them all. Lord knows I've tried. I suspect you'll use that 34 cabinet under one of the CA2A's and you'll grab that other 33 cabinet when you return for the second CA2A.
Hi Travis, yeah that shelf is solid, and I didn't point out the area I should have. There are similarly damaged areas on the evaporator its self. But I think you're right it must have been an ill fated purging attempt losing the charge.
I just cringe at laying these over on the side! I know it's necessary sometimes but it just scares me!
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Post by Travis on Nov 19, 2018 19:02:50 GMT
You only lay them over when two tall men aren’t available. Short men can’t lift a unit off without equipment.
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Time will tell.