Binks 33-517 (Quincy 210?)

by Dave Cornell
(Talent, OR, USA)

Pumps to 115 psi, switches to some kind of standby mode with motor & pump running but compressor is no longer pumping.


I do not hear any blow-off of air when the switch-over occurs.

It used to automatically turn the electric motor off when it reached the set point. I now have to manually turn it off to get it to stop.

Do you need control valve numbers, pilot valve, Unloader details, etc.?

Is it possible the shut-off pressure setting has somehow increased to a higher pressure than the standby pressure, or the standby pressure has somehow decreased to below the shut-off pressure? I don't clearly understand the mechanics of just how this process works.

Comments for Binks 33-517 (Quincy 210?)

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Dec 21, 2018
At least you know what it's supposed to do...
by: Doug in s.d.ca.

" I don't clearly understand the mechanics of just how this process works. "

Me neither.

But I can tell you there are systems that work a hybrid of what yours does/did. Some have a control to switch modes, depending on demand. Might you have switched/moved something unintentionally?

So, I'd work backward from the motor relay/switch (the auto one, not the manual, although auto and manual may be wired in series).

Make it cycle, and work back to something happening that doesn't do anything - maybe a welded relay, or a sticky valve, or even a timer.

HTH, and good luck.

And take pix of what you find, please.

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