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DoN. Nichols[_2_] DoN. Nichols[_2_] is offline
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Default Repair my Emglo AM78-HV4V air compressor

On 2014-03-30, josh wrote:
replying to Lloyd E. Sponenburgh , josh wrote:
lol. the original question was also how to separate the motor from the
pump to inspect the centrifugal switch. pump won't start up correctly
with 0 psi.

please look:

http://www.ereplacementparts.com/emg...189_15192.html


Looking at that (the downloaded PDF, not the reduced drawing
visible on the page) it does not appear to even *have* a centrifugal
switch. I see the cap (item 220, with associated mounting nut and
lockwasher), and the stator, with what *looks* like four leads coming
out, and no visible terminal block or anything of the sort, unless that
is part of the "end cover" (item 235).

It is *possible* that this thing has a capacitor *run* motor
instead of a capacitor *start* motor, so there would be *no* centrifugal
switch. Look at the capacitor to see whether it has a full AC voltage
rating or just a DC one. The photo of it is too low contrast and too
small to read the ratings on the cap from here, but you have the actual
cap to look at.

the main shaft can't be pulled out either way that I can see. the fan has
no apparent connection. it looks like it was put on and the end of the
shaft was tooled somehow to keep it in place. if it was popped off, would
it be conceivable to be put back on?


Is 236 (a nut) used to hold the end cover in place, or the fan?

There is also item 846, which is called a "repair kit", and
which appears to have a couple of screws, a nut and a washer, or perhaps
two sizes of nuts, and three wires (or are those wrinkles in the plastic
bag?)

It might also be possible (if enough wires go into the pressure
switch) that it closes all contacts and then releases some to take the
task of a centrifugal switch.

Whatever it is, it is a weird device.

And it looks as though it is rather noisy when it *is* working.

Good Luck,
Don.

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