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CFM: Cubic feet per minute.
SCFM: Standard cubic feet per minute; a unit of measure of air delivery.
PSIG: Pounds per square inch gauge; a unit of measure of pressure.
ASME: American Society of Mechanical Engineers; made, tested, inspected, and
registered to meet the standards of ASME.
Cut-In Pressure: While the motor is off, air tank pressure drops as you continue to
use your accessory or air tool. When the tank pressure drops to a certain low level
the motor will restart automatically. The low pressure at which the motor
automatically restarts is called “cut-in pressure.”
Cut-Out Pressure: When you turn on your air compressor and it begins to run, air
pressure in the air tank begins to build. It builds to a certain high pressure before
the motor automatically shuts off - protecting your air tank from pressure higher
than its capacity. The high pressure at which the motor shuts off is called “cut-out
pressure.”
Code Certification: Products that bear one or more of the following marks: UL,
CUL, ETL, CETL, have been evaluated by OSHA certified independent safety
laboratories and meet the applicable Underwriters Laboratories Standards for
Safety.
Porter-Cable air compressors should be operated on not more than a 50% duty
cycle. This means an air compressor that pumps air more than 50% of one hour is
considered misuse, because the air compressor is undersized for the required air
demand. Maximum compressor pumping time per hour is 30 minutes.
GLOSSARY
DUTY CYCLE
SPECIFICATIONS
MODEL NO. CPF23400S
Horsepower-Peak 3
SCFM @ 40 psig 7.7
SCFM @ 90 psig 5.3
Cut-In 110 PSI
Cut-Out 135 PSI
Bore 2.375"
Stroke 1.350"
Voltage/Hertz/Phase 120/60/1
Minimum Branch Circuit 15 Amp
* Fuse Type Time Delay Type “T”
Amperage at Max. Load 15 Amps
Tank Size 4 Gallon
* A circuit breaker is preferred. Use only a fuse or circuit breaker that is the same rating
as the branch circuit on which the air compressor is operated. If the air compressor is
connected to a circuit protected by fuses, use dual element time delay fuses.