If the pressure is high enough to cause the unloader cylinder to explode, any body part within range is susceptible!
Air compressor control question
- Thread starter ammklq143
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If the pressure is high enough to cause the unloader cylinder to explode, any body part within range is susceptible!
GeorgeB
ElectroHydraulics engineer (retired)
- Location
- Greenville SC
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- Retired
As others have found, the manufacturer still exists ... and has an email address on the product page, http://www.zjksok.com/index.php/product/index/g/e/id/4.html. I'd suggest your best approach would be to contact them. You'd likely either get documentation or a link to a US representative. As others have said, 480 psi, 3 stage, is not the everyday unit. They seem to be specialized into the blow-mold market.
Thank you for the diagram. Yes, I believe he did say they used the compressors for blowing bottles. Currently, they don't need the high psi and I believe they have the pressure switch set to kick out at downwards of 200 psi.Here is a typical control schematic.
If they’re blowing PET bottles, they likely need 1000 psi or more.
It’s likely that the compressors are double-acting (compress at both ends of the cylinder). If so, it’s possible to run 50% load by unloading one end of the cylinder. They would require an additional pressure switch and solenoid valve. This could explain the multiple solenoid valves.
Allen Bradley style ‘C’ pressure switches were what we normally used for control. Those Sq-D ones did not allow for a small enough differential between open and closed, and I don’t recall them being available in pressures as high as you are talking about.
I'm located in northeast IA
Minnesota Industrial Tools used to be a top-notch compressor service company when I was in the business. I think they may cover your area.
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