Manual

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 Underwriters Laboratories
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.
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.
Model No, C3151
Horsepower Peak 3.5
Bore 2.375"
Stroke 1.350"
* Voltage-Single Phase 120
* * Minimum Branch Circuit Requirement 15 amps
* Fuse Type Time Delay
Air Tank Capacity (Gallon) 4.5
Approximate Cut-in Pressure 120 PSIG
Approximate Cut-out Pressure 150 PSIG
SCFM @90 PSIG 6.0
* This air compressor can be operated on a 15 amp
circuit if:
1. Voltagesupplyto circuit isnormal.
2. Circuit isnot used to supplyany otherelectrical needs (lights,appliances, etc.)
3. Extensioncords comply with specificationsinowners manual,
4. Circuitisequipped with 15 amp circuitbreakeror 15 amp time delay fuse.
ff any of the above conditionscannot be met, or ifoperationofthe air compressor
repeatedly causesinterruptionof the power it may be necessaryto operateitfrom a
20 amp circuit,it is not necessaryto change the cordset.
* * A circuitbreakerispreferred. Use onlya fuse or circuitbreaker that is the same
rating asthe branch circuiton whichthe air compressoris operated. If the air
compressor is connected to a circuit protected by fuses, use dual element time
delay fuses.
D28379 8-ENG