Commpressor question...

[Mr Tees!!]

Well, looks like  may be replacing my compressor...

OK, soooo...Diamondback is rated to consume 19cfm @ 100psi.

Current compressor is 7.5hp, 80gal tank,rated to deliver 23.1cfm @ the full 175 PSI
   http://www.grainger.com/Grainger/SPEEDAIRE-Electric-Air-Compressor-4XA60

Looking at this one locally, also 7.5hp, 80gal tank, but rated at 24.3cfm @ 90psi, but max pressure at 175.
   http://www.tractorsupply.com/en/store/ingersoll-randreg%3B-75-hp-80-gallon-two-stage-air-compressor

Now, does the CFM delivery offset the psi here? the max pressure on the Ingersoll unit is also 175, so I think it keeps the pressure at a range well above what the press consumes. Is there any reason this wouldn't work? Pros, cons?

FYI, not worried about future expansion in this case...next press in the business plan will be servo-based and consume less air anyway.

Thanks!!

[244]

Well, looks like  may be replacing my compressor...

OK, soooo...Diamondback is rated to consume 19cfm @ 100psi.

Current compressor is 7.5hp, 80gal tank,rated to deliver 23.1cfm @ the full 175 PSI
   http://www.grainger.com/Grainger/SPEEDAIRE-Electric-Air-Compressor-4XA60

Looking at this one locally, also 7.5hp, 80gal tank, but rated at 24.3cfm @ 90psi, but max pressure at 175.
   http://www.tractorsupply.com/en/store/ingersoll-randreg%3B-75-hp-80-gallon-two-stage-air-compressor

Now, does the CFM delivery offset the psi here? the max pressure on the Ingersoll unit is also 175, so I think it keeps the pressure at a range well above what the press consumes. Is there any reason this wouldn't work? Pros, cons?

FYI, not worried about future expansion in this case...next press in the business plan will be servo-based and consume less air anyway.

Thanks!!

as you increase the psi the CFO goes down. The one you are looking at should be fine. Set the compressor to run to 110-115 and start at 95-100

[Northland]

FYI.... Grainger's prices usually on the high side.
You can probably find that Speedaire cheaper, somewhere else.

[balloonguy]

I am sorry I am not contributing to your question but.... I have a an ingrosol rand that has never worked. The company has been really bad to work with. I just want to share in case someone tries to talk you in to one.
Matt

[numbercruncher]

"FYI, not worried about future expansion in this case...next press in the business plan will be servo-based and consume less air anyway."

I'm not so sure the addition of a servo indexer decreases the CFM requirement - believe I heard that size and weight of the press with the addition of a servo indexer may often increase the CFM requirement.

[Mr Tees!!]

...According to M&R website, My DB 6/8 requires 19cfm, but a Sportsman 10/12 (in the two year plan hopefully), only requires 9cfm. I assume the indexer and all print heads being servo (i.e., consuming no air them selves)makes this possible. I suppose then the only air being used is for the choppers and the table-lift.

[Admiral]

...According to M&R website, My DB 6/8 requires 19cfm, but a Sportsman 10/12 (in the two year plan hopefully), only requires 9cfm. I assume the indexer and all print heads being servo (i.e., consuming no air them selves)makes this possible. I suppose then the only air being used is for the choppers and the table-lift.

and frame locks, squeegee / floodbar locks

[Mr Tees!!]

Well, looks like  may be replacing my compressor...

OK, soooo...Diamondback is rated to consume 19cfm @ 100psi.

Current compressor is 7.5hp, 80gal tank,rated to deliver 23.1cfm @ the full 175 PSI
   http://www.grainger.com/Grainger/SPEEDAIRE-Electric-Air-Compressor-4XA60

Looking at this one locally, also 7.5hp, 80gal tank, but rated at 24.3cfm @ 90psi, but max pressure at 175.
   http://www.tractorsupply.com/en/store/ingersoll-randreg%3B-75-hp-80-gallon-two-stage-air-compressor

Now, does the CFM delivery offset the psi here? the max pressure on the Ingersoll unit is also 175, so I think it keeps the pressure at a range well above what the press consumes. Is there any reason this wouldn't work? Pros, cons?

FYI, not worried about future expansion in this case...next press in the business plan will be servo-based and consume less air anyway.

Thanks!!

as you increase the psi the CFO goes down. The one you are looking at should be fine. Set the compressor to run to 110-115 and start at 95-100

...thanks for the reply, Rich! The IR is the one I ended up with, and we are going to repair the old unit and use as a backup, as well as utilizing the tank for extra air storage.

...IF I lower the cutoff/cut-on specs to what you have suggested, wouldn't that cause the motor to run more frequently? I notice that this new unit already cycles more frequently, with a 175/145 cycle. We did some rough timing, and running the press even at a slow pace the compressor runs for 60 sec and then cuts off for 130 sec. I would like to lower the running-time if possible.

..any suggestions? I don't much at all about this stuff, and could be missing something for sure. Educate me please, I need it!

[244]

Well, looks like  may be replacing my compressor...

OK, soooo...Diamondback is rated to consume 19cfm @ 100psi.

Current compressor is 7.5hp, 80gal tank,rated to deliver 23.1cfm @ the full 175 PSI
   http://www.grainger.com/Grainger/SPEEDAIRE-Electric-Air-Compressor-4XA60

Looking at this one locally, also 7.5hp, 80gal tank, but rated at 24.3cfm @ 90psi, but max pressure at 175.
   http://www.tractorsupply.com/en/store/ingersoll-randreg%3B-75-hp-80-gallon-two-stage-air-compressor

Now, does the CFM delivery offset the psi here? the max pressure on the Ingersoll unit is also 175, so I think it keeps the pressure at a range well above what the press consumes. Is there any reason this wouldn't work? Pros, cons?

FYI, not worried about future expansion in this case...next press in the business plan will be servo-based and consume less air anyway.

Thanks!!

as you increase the psi the CFO goes down. The one you are looking at should be fine. Set the compressor to run to 110-115 and start at 95-100

...thanks for the reply, Rich! The IR is the one I ended up with, and we are going to repair the old unit and use as a backup, as well as utilizing the tank for extra air storage.

...IF I lower the cutoff/cut-on specs to what you have suggested, wouldn't that cause the motor to run more frequently? I notice that this new unit already cycles more frequently, with a 175/145 cycle. We did some rough timing, and running the press even at a slow pace the compressor runs for 60 sec and then cuts off for 130 sec. I would like to lower the running-time if possible.

..any suggestions? I don't much at all about this stuff, and could be missing something for sure. Educate me please, I need it!

running the compressor at a lower pressure will increase the cfm which will make the compressor run less. Our regulator cut you down to 95/100 psi so running higher compression is on working your compressor harder for no reason.