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Post by jswynn on Jul 8, 2019 21:41:02 GMT
just saw one on youtube for a monitor top. The relay on that one seems to be outside of the monitor top. Mine is inside the monitor top. Was this different depending on the year?
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Post by cablehack on Jul 9, 2019 1:25:26 GMT
just saw one on youtube for a monitor top. The relay on that one seems to be outside of the monitor top. Mine is inside the monitor top. Was this different depending on the year? From 1935 it was on the inside of the fins. The 1934 CK-3 and CA machines have it on the outside. |
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Post by jswynn on Oct 17, 2019 14:33:52 GMT
Hey guys! Well, I finally found a reputable HVAC company to come out and install the RO-81 Overload/Relay so the fridge is now "running" like it should and not shutting down after 3 minutes. The problem now is it isn't cooling like it should. the coils don't seem to be getting warm like they used to. Is this a coolant issue? Can you replace the coolant? Thank you for any continued help you can give me!
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Post by turbokinetic on Oct 17, 2019 14:55:14 GMT
Hey guys! Well, I finally found a reputable HVAC company to come out and install the RO-81 Overload/Relay so the fridge is now "running" like it should and not shutting down after 3 minutes. The problem now is it isn't cooling like it should. the coils don't seem to be getting warm like they used to. Is this a coolant issue? Can you replace the coolant? Thank you for any continued help you can give me! Very glad you found someone to install the RO81 relay! So, questions.... During the relay repair, was the fridge cooling unit turned on its side or upside down? How long was the unit "down" or "out of commission" since it last worked correctly (ie. before the 3-minute issue first appeared)? Turning upside down, or longterm short-cycling (due to the relay problem) can cause the oil to become trapped in the wrong areas of the system, where it is taking up space which should be filled with refrigerant to cool the system. If this is the case, it's possible to fix it easily. Fill two large ziploc bags with hot water, and place them in the evaporator (the freezer compartment where you put the ice cube trays) Run the compressor while the hot water is in the evaporator. Repeat until the condenser (the round drum around the outside of the compressor) gets very warm from top to bottom. A second possibility is, that the cooling unit isn't getting as hot now, because the motor isn't constantly running with a stuck-on start winding circuit. That will produce a lot of heat in the dome area, especially if it runs like that for an extended period of time. It may be that the unit is running cooler because it's not under excess stress now that the bad relay is gone. The cooler temp on the top may be normal. It may need time to stabilize. I would run it an hour and see what happens. If, after running for 15 - 20 minutes, there is no cooling; you may need to "gently tap" the float chamber to help the float start working. I doubt it lost refrigerant. The original SO2 refrigerant has a very bad irritant smell, even in minuscule quantities. If there had been a leak, you would have been aware of it. If that has happened, the CK Monitor Top unit has been proven fully compatible with R152A refrigerant. This is inexpensive and readily available. The only difficult part is obtaining the correct service valve tool to recharge it. Hope this helps! Sincerely, David |
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Post by jswynn on Oct 17, 2019 15:08:14 GMT
David, thank you for the response. The refrigerator hasn't moved from it's finished location for 8 years or so. It cooled properly until I had to defrost it several months ago. I would need to defrost it every few months or so. The last time was when the issues started. The motor area does get very warm and "some" of the coils get kind of warm. It has not ever been turned on it side...
I will turn it on and let it run for an hour and see what happens. I will also try the hot water trick. Fingers Crossed!!
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Post by turbokinetic on Oct 17, 2019 21:43:31 GMT
David, thank you for the response. The refrigerator hasn't moved from it's finished location for 8 years or so. It cooled properly until I had to defrost it several months ago. I would need to defrost it every few months or so. The last time was when the issues started. The motor area does get very warm and "some" of the coils get kind of warm. It has not ever been turned on it side... I will turn it on and let it run for an hour and see what happens. I will also try the hot water trick. Fingers Crossed!! I see. Glad it wasn't turned over. It does sound like the float valve is not opening, thereby preventing the refrigerant from circulating. If it doesn't start working after an hour (or if the compressor feels like it's getting too hot) then you may want to try tapping gently on the float chamber after running the unit. |
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Post by jswynn on Oct 18, 2019 14:36:14 GMT
Well...I tried all of the tricks and nothing has changed. The ice tray gets cold, but not cold enough to cool the inside of the refrigerator. The coils aren't getting warm either. The only part that gets warm is where the motor is. I'm starting to get a little worried...
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Post by turbokinetic on Oct 18, 2019 14:57:28 GMT
Well...I tried all of the tricks and nothing has changed. The ice tray gets cold, but not cold enough to cool the inside of the refrigerator. The coils aren't getting warm either. The only part that gets warm is where the motor is. I'm starting to get a little worried... That's frustrating indeed. It is hard to imagine that the relay problem and the cooling problem are not somehow related, but it's even harder to figure out HOW they could be related. When you tried tapping on the float valve, just confirm you tapped on it inside the cabinet where the small line comes out and goes down to the evaporator? |
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Post by jswynn on Oct 18, 2019 17:59:43 GMT
I did. I just turned it back on and will let it run for a bit and try again.
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Post by jswynn on Oct 18, 2019 20:09:05 GMT
No luck. I will keep trying though.
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Post by jswynn on Oct 19, 2019 18:38:37 GMT
Well, nothing is working and I don't have a clue what to do next. The ice trays get cold, but not COLD. I can't scrap this thing. It was my father-in-laws and it has been in their family since my wife was born. Any other suggestions would be welcomed! Should I start shopping around for a new top?
Thank you guys for all the help you have given me. I appreciate it!
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Post by jswynn on Oct 19, 2019 20:46:39 GMT
I just watched a youtube video on purging the unit. I am wondering if this is the next step...
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Post by Travis on Oct 19, 2019 22:33:41 GMT
You only bleed NCG’s from CA units.
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Post by jswynn on Oct 19, 2019 22:52:01 GMT
Why not CK's? There has to be a way to do it, right?
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Post by cablehack on Oct 20, 2019 0:56:45 GMT
Why not CK's? There has to be a way to do it, right? The sulphur dioxide refrigerant used in a CK does not break down to create non condensible gases. CA's use methyl formate which is very different.
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