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Post by rchodgie on Jun 16, 2018 22:05:13 GMT
Looking for a 2 knob cold control for a PB6-37-A GE flat top. Original cold control was GE #MIA78, 1/8 HP, 3.4 amps. Know GE made other 2 knob cold controls that might work also. Any help would be appreciated.
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Post by coldspaces on Jun 17, 2018 4:19:14 GMT
All the controls I have belong with one of my monitor tops or a flat tops. It is possible to replace the start relay and adapt one in that has an overload in it(Supco RO81 works good). Then you could make a 1 knob control work. I would assume that any wiring you mess with that is underneath will need replaced. The wiring inside of the cabinet is more likely to be good still.
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Post by rchodgie on Jun 17, 2018 17:40:30 GMT
Thanks for the reply. If I can't find a two knob cold control, I was thinking of trying a Ranco A30-180 thermostat along with the Supco RO81 you suggested. When I replace the MIA162 original relay with the Supco, how does the wiring pattern change as compared to the old relay? The burned out MIA78 cold control has two black wires on the top terminal and one red(run wire?) on the bottom terminal. If I use the Ranco A30-180 thermostat or an old GE single knob cold control, what would the wiring to the new cold control look like? I have restored a number of old appliances but this is my first go at refrigeration. Thank you again for your help on this!
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Post by coldspaces on Jun 17, 2018 21:36:29 GMT
Have you seen the manual? monitortop.freeforums.net/thread/15/service-manual. It should have your original wiring in it. I don't have time to look for it right now. You may need the number off of the refrigeration unit underneath to find the right one. |
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Post by ckfan on Jun 18, 2018 22:25:30 GMT
Whatever replacement thermostat you use will have two terminals like the old one. Wire it up exactly the same. As far as the relay goes, it will have instructions on it telling you which wire goes where. You give the relay power from the thermostat side. Then it gives power to the compressor through its run and start wires. I always take out the common wire, it just pulls out of the relay, to save confusion. The common wire on the compressor can just be hooked up to the neutral coming from the line cord.
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