A friend has a 2 stage ( 21 amp ) 60 gal compressor with a 180 lbs max
rating . While looking at it I noticed he had it set to cut off at 140
lbs . When I asked why he said that since it supplies the volume he needs
and the regulator is set for 90 lbs why put the strain on the pump and
motor and use the extra power to bring the tank up to a level you never
will use . His opinion is that the work the motor has to do to push in
that last 40 lbs is much greater than it did to get to 140.
Does he know what he is talking about ?
Part two :
When they talk about cubic feet per minute, is that assuming the tank has
no air in storage, or to ask it another way, doesn't a 1 hp unit with
the tank at 125 lbs deliver the same volume as a 10 hp unit with 125 lbs
in the tank ?
Bob Nogueira
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