by Fred
(Douglas City, CA)
I have an older Speedaire compressor. The model number is 3Z355B (sorry six characters not five as posted). It is a two cylinder, single phase compressor that can be wired either 230V or 115V.
Comments for Plugging in a Speedaire compressor: what voltage?
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by Gary Hughes
(Fresno, CA)
I have one of these installed at a Bakersfield high school where it will be used for shop air. The H.S. District wants to shut the unit off on the weekends.
I proposed a relay that would interrupt the control circuit to the starters. But after looking at the unit with dual compressors and an alternating relay, it looked like this might be tricky.
The control contractor suggested putting an additional starter upstream of the whole unit. That way we wouldn't be getting into the manufacturer's control circuit.
The starter may actually be cleaner in that we don't touch the air compressor. Will shutting off the unit with an additional starter, mess up the control circuitry of the air compressor?
Or would the relay be a better way to go?
Since I'm here, how often should these compressor tanks be blown down at the drain to exhaust moisture in tank?
The control company wanted to install an autodrain valve and blow it down periodically.
Thanks for your help.
Gary
Mechanical Engineer
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Bill says...
Gary thanks for the visit and questions.
I'm not an electrical guy, so I would take the advice of a qualified electrician on how to properly shut off power to the units.
I like the idea of an automatic drain. I've got info on them on this site, but seem I've left the link off the sitemap. I will fix that shortly.
Cheers,
Bill