RUDD Contactors - http://www.hvacmechanic.com/ Forums
Original message
| petey48
 |  "RUDD Contactors"
, posted Tue 6 May 07:12  
Hello guys, I've got a Rudd heat pump that has a welded up set of contacts and it's causing the outside fan and compressors to run nonstop, electric bill out of control. Problem is the P/N writing has worn off with age on the contactor and there's so many different ones out there I don't know what P/N to search for. My unit model # is "UPGB 049JAZ" 208/230 volt. All that I can make out on the contactor is that it's made by Honeywell and it's a single pole. Can someone help me out with what contactor P/N I need to ask for? Thanks
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Replies:
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| Houston204
| "Re(1):RUDD Contactors" , posted Tue 6 May 07:43
Single pole 30 amp contactor with a 24 volt coil.
"Tip of the Day" Remember to remove power first.
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| | petey48
| "Re(2):RUDD Contactors" , posted Tue 6 May 18:45:
I'm going to use what you told me but I have a question. A maint. guy at work today give me a used 30A 24v coil double pole comtactor and said it would work fine, so I took it as a freeby. I'm no electrician but I do know on the single poll that one side stays hot,and the double pole both side drops out completely breaking the circuit. Is there a reason that one side needs to stay hot? And would the 208/230 24v double pole contactor do in an emergency? I'll keep it just in case. Thanks for your help.
[this message was edited by petey48 on Tue 6 May 20:30] |
| | Houston204
| "Re(3):RUDD Contactors" , posted Tue 6 May 19:55
I actually prefer 2 pole contactors, unless, I see a crank case heater wired to opposite sides of the leg broken by a single pole contactor.
A 240 volt crank case heater wired this way will only be energized when you do not have a demand from your stat. This lowers your operating cost, increasing efficiency.
I see this done with Carrier condensers.
"Tip of the Day" Remember to remove power first.
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| | petey48
| "Re(5):RUDD Contactors" , posted Wed 7 May 07:11
Thanks Houston204 I'll keep this as a future reference. This tells me what each piece controls.
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| | Houston204
| "Re(6):RUDD Contactors" , posted Thu 8 May 21:51
My example was a Carrier.
"Tip of the Day" Remember to remove power first.
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