Atlas cop o

[TonyJ]

Anyone have one of these or someone that may know about what the cfm rating is ?? I can get it for free and it’s just the pump only. It was bought many years ago and has never been hooked up or used. It was bought as a replacement pump but was never needed


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[TonyJ]

Anyone have one of these or someone that may know about what the cfm rating is ?? I can get it for free and it’s just the pump only. It was bought many years ago and has never been hooked up or used. It was bought as a replacement pump but was never needed


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Atlas copco


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[930dreamer]

About 3-4 cfm per hp.

Google search

How many CFM is equal to 1 HP?
3-4 CFM
A rule of thumb is that each 1 HP motor size generates about 3-4 CFM of compressed air flow at about 90 PSI.

 

[pancho400cid]

Atlas Copco LE40 - 10 (the 10 means 10 bar pressure = 145 PSI appox). I found this on-line manual:

https://www.manualslib.com/products/Atlas-Copco-Le40-8908074.html

It says "free air delivery is 9.7 liters / second" so that's about 20.6 CFM of free air at 1800 RPM.

The nameplate in your pic shows a dual rating - one at 1500 RPM (4 pole / 50 Hz) and one at 1800 RPM (4 pole / 60 Hz). If the motor is induction, it will actually run 20 - 50 RPM slower than those "synchronous" speeds in the rating, so a little less flow.

UPDATE - After the posts below I looked again, and I see the 8.4 liter/sec flow right on the nameplate... about 17.8 CFM as said. Looks like a 50 Hz machine originally (flow in the 1500 RPM column and commas for decimals).

...

 

[claymont]

Anyone have one of these or someone that may know about what the cfm rating is ?? I can get it for free and it’s just the pump only. It was bought many years ago and has never been hooked up or used. It was bought as a replacement pump but was never needed


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8.4 ls/17.7984 cfm at 1500 rpm

 

[viikinki]

8.4 ls/17.7984 cfm at 1500 rpm

Like claymont says, 1 L/s is 2.118 cfm/min