Glossary, Duty cycle – Porter-Cable N028591 User Manual
Page 7
7 - ENG
HAZARD
RISk FROM NOISE
WHAT CAN HAPPEN
HOW TO PREVENT IT
• Under some conditions and dura-
tion of use, noise from this product
may contribute to hearing loss.
• Always wear certified safe-
ty equipment: ANSI S12.6
(S3.19) hearing protection.
SAVE THESE INSTRUCTIONS
FOR FUTURE USE
SPECIFICATIONS
Model No.
C7501
Running Horsepower
*3.0
Voltage/Hertz/Phase
240V/60/1
Minimum Branch Circuit Requirement
15 Amp
Fuse Type
Time Delay
Air Tank Capacity (Gallon)
60 ASME, Vertical (227.1 liters)
Approximate Cut-in Pressure
110 PSIG
Approximate Cut-out Pressure
135 PSIG
SCFM @ 40 PSIG
*12.2
SCFM @ 90 PSIG
*10.1
*Tested per ISO 1217
Refer to Glossary for abbreviations.
GLOSSARY
Become familiar with these terms before operating the unit.
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.
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 Standards for Safety.
Cut-In Pressure: While the motor is off, air tank pressure drops as you continue
to use your accessory. 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 an air compressor is turned on and 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.
Branch Circuit: Circuit carrying electricity from electrical panel to outlet.
To Lock Out Power: Place a lock on the line power switch so no one else can
turn on the power.
DUTY CYCLE
This air compressor pump is capable of running continuously. However, to prolong
the life of your air compressor, it is recommended that a 50%-75% average duty
cycle be maintained; that is, the air compressor pump should not run more than
30-45 minutes in any given hour.