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Post by pittfitter on Jun 16, 2014 13:04:28 GMT
Have new relay to replace burnt up one. Was told it ran up until then. Does anyone have simple wiring diagram?   |
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Post by cablehack on Jun 16, 2014 23:17:20 GMT
This is an FEA unit. The two knob control looks unusual as they were not used after 1937. It could be a replacement used as nothing else was conveniently available. There isn't any official FEA wiring diagrams or manuals on this site, but the wiring should be the same as the CH unit:  |
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Post by pittfitter on Aug 14, 2014 19:29:54 GMT
Installed new Supco R081-115 relay. Comp ran for about 2 min.-off on O/L. Drawing 4-1/2 - 5 Amp. Ohm comp.(see pict)1-2 = 6 ohm, 1-3 = 19 ohm, 2-3 =23 ohm. Relay too small? What next? Is there a manual on checking/charging/replacing refrigerant? Installed new cond. fan - blowing away from comp. thru coil -normal? Any help would be appreciated.
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Post by coldspaces on Aug 14, 2014 19:41:12 GMT
#1 is Common, 2 is Run and 3 is Start according to the resistances you posted. Looks like the new relay is wired wrong if black is common and red is run.
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Post by coldspaces on Aug 14, 2014 19:50:25 GMT
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Post by allan on Aug 14, 2014 21:37:22 GMT
Installed new Supco R081-115 relay. Comp ran for about 2 min.-off on O/L. Drawing 4-1/2 - 5 Amp. Ohm comp.(see pict)1-2 = 6 ohm, 1-3 = 19 ohm, 2-3 =23 ohm. Relay too small? What next? Is there a manual on checking/charging/replacing refrigerant? Installed new cond. fan - blowing away from comp. thru coil -normal? Any help would be appreciated.
I am assuming the red, white and black wires are the leads connected to the RO81. If so put black on 1, red on 2, and white on terminal 3. |
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Post by pittfitter on Aug 15, 2014 14:54:20 GMT
Put black on 1 red on 2 white on 3. Drawing 4 amp. comp running hot, no cooling trips on O/L after 4 min.
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Post by coldspaces on Aug 15, 2014 20:17:18 GMT
That should have worked. You need to check the amp draw of the start winding. Put the amp meter on the white start wire to terminal 3 then plug it in. There should be amps going through this wire only when starting. After it starts there should be no measurable amp draw through the start winding. Check this and let us know what you get.
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Post by allan on Aug 16, 2014 2:27:39 GMT
Is the condenser fan running full speed? Also take a flashlight and look into the condenser fins to check for dust blockage.
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