Speedaire 3z922 - where air enters?

Speedaire 3z922 motor and pump assembly


Was curious as to where air enters the compression cylinders the output is obvious but may have a blockage on the draw input.Removed the cooling fan cover and the air enter side is not obvious.
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I tried to find a photo on line of this Dayton Speedaire air compressor, with no luck.

If you could re-post this again, and upload a digital photo of both sides of the air compressor, I, or one of our visitors, would be glad to help.

Cheers,

Bill

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Is a Speedaire rotary screw compressor, 7.5 hp, model 1WD97, a good choice and a model 4b220 will not build pressure past 80psi...

by Elia Sinaiko
(Provincetown MA)

Speedaire compressor Model Number: 1WD97  (Photo: www.grainger.com)

Speedaire compressor Model Number: 1WD97 (Photo: www.grainger.com)

Speedaire compressor Model Number: 1WD97  (Photo: www.grainger.com)
Speedaire 4b220 (Photo: www.grainger.com)

I want to install small (about 10hp) a rotary screw compressor in my shop. I have the possibility of buying a Speedaire 1WD97 with low hours. This model is no longer sold by Grainger. It looks clean with low hours. Is this a good choice (versus new Eaton or other brands)? Are there any problems with Speedaire rotary screw compressors that I should be aware of?

Thank You

Elia

Elia A. Sinaiko, Ph.D.
609 Commercial Street
Provincetown, MA - 02657

Phone: (508) 487-1421
Cell: (646) 732-6228
Email: elia.sinaiko@earthlink.net
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Hello Elia...

I haven't used this compressor, so do not have personal experience to draw on. There are many Speedaire air compressor owners that visit this site, so I hope that some can provide a review for you.

I note that at present Grainger still supplies parts for this model air compressor, so that is a positive in the event you have a breakdown.

Cheers,

Bill





4b220 will not build pressure past 80psi?




Sun Nov 11 20:46:52 2012 EST
By: Todd,
Southgate MI, US

i have a speedaire 4b220 that will not build pressure past about 80. It takes awhile to get there and just keeps running. There are no leaks. The tank will hold pressure as well.
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Todd, assuming you have no issues with the gas engine as a power supply to the compressor, typically, there are a few things that happen to an air compressor that prevent it from building pressure past a certain point.

It may be the tank check valve that is at fault, but more often the issue is valve or gasket related. That is, the valves (intake and pressure) and the gaskets inside the pump head.

See the page under Troubleshooting on the sitemap page for more details.

Cheers,

Bill


Comments for Is a Speedaire rotary screw compressor, 7.5 hp, model 1WD97, a good choice and a model 4b220 will not build pressure past 80psi...

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Nov 30, 2012
I bought it!
by: Elia0224

I bought it with the tank at $3200. It has 900 hours on it. I'll let you all know how it works out.

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specs on pump1944b

by greg
(mo)

am looking for specs on this model, i know it has a 1 hp motor and that's all i know. really want to know the cfm and where to get new rings and reeds. thanks

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Felt filter element for Speedaire compressor

by dryhter
(Auburn Twp., OH)

I have a speedaire 3z355. Are The felt filters available?
Dave
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Dave, if you are talking about the filter element for the intake filter for the compressor, then, I too haven't been able to find OEM parts.

However, if you ponder what the filter is doing. It is allowing air to pass through itself as it is ingested into the air compressor, leaving behind air borne debris in the filter element.

As long as you have an element that does this job, and does not impeded the air flow, then you're good to go.

Typically, I'll purchase a low cost furnace filter, one that is about 1" thick, and remove the cardboard frame, leaving the mesh / woven, typically fiberglass or plastic, element. This I cut to size with scissors to fit inside the intake filter for the compressor.

This is what I do when I cannot find an OEM filter element for the intake filter for my air compressor.

Cheers,

Bill

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