Well , Mr. Compressor has a case of the humms . That is , when I try to start it , it just humms (until the O/L cuts it off if I let it go that long). This is the original motor on an old Speedaire 60 gallon tank , 220 volts and 3450 RPM's . Specs call for 15 amps full load , rated output is 2.98Kw , about 6 hp . This is an Emerson/Doerr compressor duty motor . Tested both caps , one is good and the other isn't according to the tests with my DMM . Problem is that the bad cap has rubbed the capacitance and voltage ratings off the label . Got a couple of calls in , looked around on the internet , can't find a definite answer . I'm pretty sure it needs to be around 250uf and at least 250 volts - though maybe higher voltage to account for spikes . I have the motor type/classification numbers , just can't find a reference to check ... anybody got a lead on that type of info ?
Compressors - kinda on topic ! (2025 Update)
Dec 03, 2018
Last reply: 8 months ago
2 Replies
replying to Bob La Londe, David H.T. Jordan wrote: I have that motor! It has a 189-227uf 220vac cap from Aerovox and a 15uf 370v cap from Aeromet. I hope this helps some one someday. Mopar Dave, Turner Electric Motor Service, Las Cruces, NM 88005
replying to Bob La Londe, David H.T. Jordan wrote: I have that motor! It has a 189-227uf 220vac cap from Aerovox and a 15uf 370v cap from Aeromet. I hope this helps some one someday. Mopar Dave, Turner Electric Motor Service, Las Cruces, NM 88005
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