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GLOSSARY
CFM: Cubic feet per minute.
SCFM: Standard cubic feet per minute; a unit of measure of air delivery.
PSlG: 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.
California Code: Unit may comply with California Code 462 (l) (2)/(M) (2),
Specification/model label is on the side of the tank on units that comply with
California Code.
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.
DUTY CYCLE
Porter-Cable air compressors should be operated on not more than a 50% duty
cycle. This means an aLrcompressor 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.
SPECIFICATIONS
Model No.
CPF4515
CPF6020
Horsepower Peak
4.5
6
Bore
2.375"
2.375
Stroke
1.35"
1.35"
* Voltage-Single Phase
120
120
**Minimum Branch Circuit Requirement
15 amps
15 amps
* Fuse Type
Time Delay
Time Delay
Air Tank Capacity (Gallon)
15 ASME
20 ASME
Approximate Cut-in Pressure
110 PSIG
110 PSIG
Approximate Cut-out Pressure
135 PSIG
135 PSIG
SCFM @ 40 PSIG
8.0
8.3
SCFM @ 90 PSIG
5.7
5.8
* _
This air compressor can be operated on a 15 amp circuit if:
1. Voltage supply to circuit is normal.
2. Circuit is not used to supply any other electrical needs (lights, appliances, etc.)
3. Extension cords comply with specifications in owners manual.
4. Circuit is equipped with 15 amp circuit breaker or 15 amp time delay fuse.
If any of the above conditions cannot be met, or if operation of the air compressor
repeatedly causes interruption of the power it may be necessary to operate it from
a 20 amp circuit. It is not necessary to change the cord set.
* *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.
6-ENG
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