thom
New Member
Posts: 22
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Post by thom on Feb 10, 2016 16:35:25 GMT
I am replacing the relay on my monitor top and need to know exactly how to make the connections. I am not a technician, just generally handy.
Here is the info on the relay that I am replacing:
CR 1057 E5 Relay
CAT. M1A62
110 V 50/60 CYC 1/8 HP
So my questions are is a SUPCO RO-81 the correct replacement? if so how shall I make the proper connections? If you can answer here or lead me to the right thread for the answer I'd appreciate it!
Thanks Fellas.
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Post by Travis on Feb 11, 2016 2:29:35 GMT
I replied to your email. I think you'll have to rewire the unit to use the RO 81.
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thom
New Member
Posts: 22
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Post by thom on Feb 11, 2016 14:28:59 GMT
I got your message Travis, Thank-You! I am going to try to post the schematic here of what I have verified as to how mine is currently wired. I just want to make sure that there isn't a way to wire in the RO-81 presently without rewiring. Also if I have to rewire for sure, I am wondering if any of you guys can lead me somewhere via link where someone has documented this procedure in photos or better yet video. I thought I had ran across that somewhere at some point. Now to see if my uploaded attachment appears... Attachments:
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thom
New Member
Posts: 22
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Post by thom on Feb 11, 2016 14:29:45 GMT
^Okay, now that was cool.
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Post by coldspaces on Feb 11, 2016 18:45:56 GMT
If you are using the original cold control or a new one you will need to rewire to make it correct. You will want the input of the RO-81 to be fed after the cold control. I don't see a way to do it easy with the original wiring set up. Probably due for a rewire anyway. If it was mine and I didn't want to rewire I would probably just rebuild the old relay like I did here. monitortop.freeforums.net/thread/37/ge-type-relay-modernization
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thom
New Member
Posts: 22
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Post by thom on Feb 11, 2016 22:17:24 GMT
That's cool what you did. Have you done a complete rewire to the compressor? If so did you document that too? I certainly think I will need some good visual help if I venture in to it.
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Post by Travis on Feb 12, 2016 0:52:27 GMT
Thom,
What I wrote in my message to you is what I did. I didn't make a video. I don't really know how you would capture on video this process. I laid on the floor and did one. I would recommend something higher. You only need basic soldering skills.
If I were to rewire to use a supco relay, I would thread the wire to the control through the fins. As it is, there's only one hole in the back up to the relay. You would need a second for the control wire.
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Post by ChrisJ on Feb 13, 2016 16:02:26 GMT
My RO81 is in use without modifying the wiring. It doesn't seem to care either way.
I confirmed this with an electrical engineer at work as well. It's simply wired into the original relay base.
I assume CA form A, CA form B and CK are probably wired near identical? I believe the thermostat switches the neutral rather than the hot? If that's the concern, the RO81 doesn't care.
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Post by Travis on Feb 13, 2016 16:09:49 GMT
Chris,
The wiring on the CA unit is entirely different than the wiring on the CK unit. The two conductor wire going to the switch on the CA unit is going back to the relay. On the CK unit this two conductor wire goes to the compressor lead under the compressor.
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Post by ChrisJ on Feb 13, 2016 16:13:53 GMT
Chris, The wiring on the CA unit is entirely different than the wiring on the CK unit. The two conductor wire going to the switch on the CA unit is going back to the relay. On the CK unit this two conductor wire goes to the compressor lead under the compressor. That's false. Here's my CA form A. My RO81 isn't switched, only the compressor's neutral is and it doesn't matter. Perhaps I missed something? It's always possible. Attachments:
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Post by Travis on Feb 13, 2016 16:26:11 GMT
OK, you're right help Thom
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Post by ChrisJ on Feb 13, 2016 16:44:04 GMT
OK, you're right help Thom My main issue is Mike Arnold modified this relay for me and I was too stupid to take pictures of it before mounting it. I'd really rather not remove it right now if I can avoid it. Mine only has 3 wires in use. Best I can tell, the black goes to hot, red to run and white to start.
It looks like Mike removed one of the top wires and the side common wire. I'm assuming because you don't need the neutral going through the RO81. And I can confirm, this relay is cooking when the compressor is running, I had a hard time holding it up for the picture. So as had been said, it's normal for them to get hot, it's how they work. Perhaps coldspaces or Allan can confirm the wiring? They know far more about this than I do. All I wanted to mention is they do seem to work fine with the neutral being switched.
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Post by ChrisJ on Feb 13, 2016 17:00:49 GMT
I should mention, I've found the original wiring in all of my machines to be less than safe. I'd highly recommend replacing the wire if possible. It's just I didn't find it necessary to change the configuration.
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Post by ChrisJ on Feb 13, 2016 18:49:08 GMT
Here's a drawing I made up of how mine appears to be connected. Attachments:
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thom
New Member
Posts: 22
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Post by thom on Feb 16, 2016 21:29:20 GMT
I appreciate all the input guys. Chris, just to confirm, yours is not wired like mine in the diagram above? (My neutral goes through the relay.)
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