mark
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Posts: 2
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Post by mark on Sept 10, 2019 21:16:05 GMT
I have had this fridge in my camp for ever it worked just fine, I brought it home used it for a whole season, worked just fine . After having it shut down for the winter , and starting it back up it it makes a humming sound for approx 4_5 seconds and then shuts off no more noise nothing, any ideas as to what's going on? This has been in my family along time would like to get it fixed Thank you all Mark
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Post by turbokinetic on Sept 10, 2019 22:30:17 GMT
I have had this fridge in my camp for ever it worked just fine, I brought it home used it for a whole season, worked just fine . After having it shut down for the winter , and starting it back up it it makes a humming sound for approx 4_5 seconds and then shuts off no more noise nothing, any ideas as to what's going on? This has been in my family along time would like to get it fixed Thank you all Mark Hi Mark. Thanks for joining our forum! In order to help you better troubleshoot this problem, we will need to know the "type" of machine it is. You have posted it in the type CA area of the forum, so I will assume that it's a CA machine.
If you can read the model number from the tag on the unit it should say CA-2-B16 or CK-2-C16 or something else. This would be easiest way to know. Pictures of the machine its self would also be helpful.
As for the symptom you describe; this is what happens when the compressor motor is turned on and received power, but it can't start. The motor will try to start for 4 or 5 seconds, then the overload protector (a circuit breaker) will trip and shut off the current to save the motor from burning out.
Would you tell us what part of the country you live in? There are a few members around the country who, occasionally, will assist with troubleshooting.
There are really only a few causes of this problem.
1 - The start-relay is not working. The motor requires a brief activation of the start winding, once, each time the motor is starting. This is controlled by the start-relay. If the contact points are worn down after many years of use, the result will be as you describe. For many of these, the relay can be repaired or replaced with a modern replacement.
2 - The compressor is stuck. If you have a CA type machine, this is a very real possibility. The CA machines require noncondensable gas purging which is often overlooked for decades. The excess pressure buildup causes the compressor to seize. This damage is rarely permanent, however, incorrect repair attempts can be very damaging.
3 - There is a broken wire. Was the unit moved or handled between turning it off and then the re-start attempt?
4 - The motor winding has burned. This is very unlikely in your case, because it was working when shut off, and this was how it was when you tried to start it up again.
Hope this is helpful! Sincerely, David
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mark
New Member
Posts: 2
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Post by mark on Sept 13, 2019 13:05:12 GMT
Hey all thanks for the reply, my monitor is a ca 2 b 16 it says use control cat. 58×117 , also relay cat 58×121 I live in Rochester ny , I did move it from camp to home and was very carefully of the move, it worked just fine, now won't start. A
re parts available for this still? I did watch some u tube videos on the purging of ncg but unfortunately I have had a stroke and some motor skills I have lost as a fine wood worker you can imagine my disappointment, anyways sure would like to learn more from a group such as yourselves, can't send pic I'll have to have my daughter do that for me when she's home. Thank you Mark.
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Post by ckfan on Sept 13, 2019 14:09:13 GMT
It really does sound like the start relay is not working right. That is where I would start the troubleshooting. It is located on the rear of the condenser plate and has the cord plug directly into it. Remove the cord by twisting the plug and then pulling it out. Then remove the screw on top that holds the cover on. Then you will be able to see the contacts for the start winding along with the coil that activates the relay. Look closely at the contacts and make sure that they are touching and look nice and clean. If they look dirty I would take a small file and gently clean them until you get a nice shiny flat surface on both of them.
If that works and fixes the start issue there are some other things to check to make sure that it continues to work right. I am sorry to hear that you lost some of your motor skills from a stroke.
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Post by turbokinetic on Sept 14, 2019 13:04:23 GMT
Hey all thanks for the reply, my monitor is a ca 2 b 16 it says use control cat. 58×117 , also relay cat 58×121 I live in Rochester ny , I did move it from camp to home and was very carefully of the move, it worked just fine, now won't start. A re parts available for this still? I did watch some u tube videos on the purging of ncg but unfortunately I have had a stroke and some motor skills I have lost as a fine wood worker you can imagine my disappointment, anyways sure would like to learn more from a group such as yourselves, can't send pic I'll have to have my daughter do that for me when she's home. Thank you Mark.
Sounds like you were plenty careful during the move so I would not expect that is a factor. 
It's very likely the start-relay is giving trouble. This relay works by magnetic induction. When the motor is first starting, it takes a lot of extra current. This actuates the relay armature, which pushes away from the coil. This seems backwards from most relays but it is how this one works.
When the relay is at-rest, the relay armature should be more-or-less straight out. It should be close to the coil. The contacts should be open (not touching).
As soon as the compressor is turned on, the relay armature should push away from the coil. This causes the contacts to close, with a spark, and complete the motor's start winding circuit. After the motor is up to speed, the relay armature will fall back to the rest position.
Here is a video about the CA relay. It's a Form "A" machine so the relay is mounted on the deck and not the side of the condenser. The relay works the same. www.youtube.com/watch?v=0qNh3oYrJxE
You can compare this to how yours is behaving.
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