Porter-Cable CLFRP350 User manual

Direct Drive
Oil Lube
Portable Air Compressor
Instruction
manual
IMPORTANT
Please make certain that the person who
is to use this equipment carefully reads
and understands these instructions before
starting operations.
Part No. A10055-051-0
ESPAÑOL: PÁGINA 25
FRANÇAIS: PAGE 49
To learn more about Porter-Cable
visit our website at:
http://www.porter-cable.com
Copyright © 2005 Porter-Cable Corporation
The Model and Serial No. plate is located on the frame.
Record these numbers in the spaces below and retain for
future reference.
Model No.
Type
Serial No.
Model
CLFRP350
®

2- ENG
A10055
SAFETY GUIDELINES - DEFINITIONS
Indicates an
imminently hazardous
situation which, if not avoided, will result
in death or serious injury.
Indicates a potentially
hazardous situation
which, if not avoided, could result in
death or serious injury.
Indicates a potentially
hazardous situation
which, if not avoided, may result in minor
or moderate injury.
Used without the
safety alert symbol
indicates a potentially hazardous situation
which, if not avoided, may result in
property damage.
This manual contains information that is important for you to know and
understand. This information relates to protecting YOUR SAFETY and
PREVENTING EQUIPMENT PROBLEMS. To help you recognize this
information, we use the symbols below. Please read the manual and pay
attention to these symbols.
IMPORTANT SAFETY INSTRUCTIONS
Some dust created by power sanding, sawing, grinding,
drilling, and other construction activities contains
chemicals known (to the State of California) to cause cancer, birth defects
or other reproductive harm. Some example of these chemicals are:
• lead from lead-based paints
• crystalline silica from bricks and cement and other masonry products
• arsenic and chromium from chemically-treated lumber
Your risk from these exposures varies, depending on how often you do
this type of work. To reduce your exposure to these chemicals: work in
a well ventilated area, and work with approved safety equipment, always
wear MSHA/NIOSH approved, properly fitting face mask or respirator when
using such tools.
When using air tools, basic safety precautions should always be followed
to reduce the risk of of personal injury.

3- ENG A10055
IMPORTANT SAFETY INSTRUCTIONS
Save these instructions
Improper operation or maintenance of this product could result in serious injury and
property damage. Read and understand all warnings and operation instructions before
using this equipment.
HAZARD
WARNING: Risk of explosion or fire
How To Prevent It
What Could Happen
It is normal for electrical contacts
within the motor and pressure switch to
spark.
If electrical sparks from compressor
come into contact with flammable
vapors, they may ignite, causing fire or
explosion.
Restricting any of the compressor
ventilation openings will cause serious
overheating and could cause fire.
Unattended operation of this product
could result in personal injury or
property damage. To reduce the risk
of fire, do not allow the compressor to
operate unattended.
Always operate the compressor in a
well ventilated area free of combustible
materials, gasoline, or solvent vapors.
If spraying flammable materials, locate
compressor at least 20 feet away from
spray area. An additional length of hose
may be required.
Store flammable materials in a secure
location away from compressor.
Never place objects against or on top
of compressor. Operate compressor
in an open area at least 12 inches
away from any wall or obstruction that
would restrict the flow of fresh air to the
ventilation openings.
Operate compressor in a clean, dry well
ventilated area. Do not operate unit
indoors or in any confined area.
Always remain in attendance with the
product when it is operating.
Always disconnect electrical power by
moving pressure switch lever to the off
position and drain tank daily or after
each use.

4- ENG
A10055
WARNING: Risk of Bursting
Air Tank: The following conditions could lead to a weakening of the tank, and result
in a violent tank explosion and could cause property damage or serious injury.
How To Prevent It
What Could Happen
WARNING: Risk from Flying Objects
The compressed air stream can cause
soft tissue damage to exposed skin
and can propel dirt, chips, loose
particles, and small objects at high
speed, resulting in property damage or
personal injury.
Always wear ANSI Z87.1 approved safety
glasses with side shields when using the
compressor.
Never point any nozzle or sprayer
toward any part of the body or at other
people or animals.
Always turn the compressor off and
bleed pressure from the air hose and tank
before attempting maintenance, attaching
tools or accessories.
HAZARD
HAZARD
Drain tank daily or after each use.
If tank develops a leak, replace it
immediately with a new tank or replace
the entire compressor.
Failure to properly drain condensed
water from tank, causing rust and
thinning of the steel tank.
Modifications or attempted repairs to
the tank.
Unauthorized modifications to the
unloader valve, safety valve, or any
other components which control tank
pressure.
Never drill into, weld, or make any
modifications to the tank or its
attachments.
Excessive vibration can weaken the
air tank and cause rupture or
explosion
The tank is designed to withstand specific
operating pressures. Never make
adjustments or parts substitutions
to alter the factory set operating
pressures.
For essential control of air pressure,
you must install a pressure regulator
and pressure gauge to the air outlet
(if not equipped) of your compressor.
Follow the equipment manufacturers
recommendation and never exceed the
maximum allowable pressure rating of
attachments. Never use compressor
to inflate small low pressure objects
such as children’s toys, footballs,
basketballs, etc.
ATTACHMENTS & ACCESSORIES:
Exceeding the pressure rating of
air tools, spray guns, air operated
accessories, tires, and other inflatables
can cause them to explode or fly apart,
and could result in serious injury.
How To Prevent It
What Could Happen

5- ENG A10055
WARNING: Risk to Breathing
WARNING: Risk of Electrical Shock
HAZARD
HAZARD
Your air compressor is powered by
electricity. Like any other electrically
powered device, If it is not used
properly it may cause electric shock.
Repairs attempted by unqualified
personnel can result in serious injury
or death by electrocution.
Electrical Grounding: Failure to provide
adequate grounding to this product
could result in serious injury or death
from electrocution.
See grounding instructions.
Never operate the compressor outdoors
when it is raining or in wet conditions.
Never operate compressor with
protective covers removed or damaged.
Any electrical wiring or repairs required
on this product should be performed by
authorized service center personnel
in accordance with national and local
electrical codes.
Make certain that the electrical circuit
to which the compressor is connected
provides proper electrical grounding,
correct voltage and adequate fuse
protection.
The compressed air directly from your
compressor is not safe for breathing.
The air stream may contain carbon
monoxide, toxic vapors, or solid
particles from the tank. Breathing these
contaminants can cause serious injury
or death.
Sprayed materials such as paint, paint
solvents, paint remover, insecticides,
weed killers, may contain harmful
vapors and poisons.
Air obtained directly from the compressor
should never be used to supply air for
human consumption. In order to use air
produced by this compressor for breathing,
suitable filters and in-line safety
equipment must be properly installed.
In-line filters and safety equipment
used in conjunction with the compressor
must be capable of treating air to all
applicable local and federal codes prior
to human consumption.
Work in an area with good cross
ventilation. Read and follow the safety
instructions provided on the label or
safety data sheets for the materials
you are spraying. Use a NIOSH/ MSHA
approved respirator designed for use with
your specific application.
How To Prevent It
What Could Happen
How To Prevent It
What Could Happen

6- ENG
A10055
WARNING: Risk of Burns
Touching exposed metal such as the
compressor head or outlet tubes, can
result in serious burns.
Never touch any exposed metal parts
on compressor during or immediately
after operation. Compressor will remain
hot for several minutes after operation.
Do not reach around protective shrouds
or attempt maintenance until unit has
been allowed to cool.
WARNING: Risk from Moving Parts
Never operate the compressor with
guards or covers which are damaged or
removed.
Moving parts such as the pulley, flywheel,
and belt can cause serious injury if
they come into contact with you or your
clothing.
WARNING: Risk of Falling
A portable compressor can fall from
a table, workbench, or roof causing
damage to the compressor and could
result in serious injury or death to the
operator.
Always operate compressor in a stable
secure position to prevent accidental
movement of the unit. Never operate
compressor on a roof or other elevated
position. Use additional air hose to
reach high locations.
HAZARD
HAZARD
HAZARD
Any repairs required on this product
should be performed by authorized
service center personnel.
Attempting to operate compressor with
damaged or missing parts or attempting
to repair compressor with protective
shrouds removed can expose you to
moving parts and can result in serious
injury.
How To Prevent ItWhat Could Happen
How To Prevent It
What Could Happen
How To Prevent It
What Could Happen

7- ENG A10055
Review and understand all instructions
and warnings in this manual.
Become familiar with the operation and
controls of the air compressor.
Keep operating area clear of all persons,
pets, and obstacles.
Keep children away from the air
compressor at all times.
Do not operate the product when
fatigued or under the influence of
alcohol or drugs. Stay alert at all times.
Never defeat the safety features of this
product.
Equip area of operation with a fire
extinguisher.
Do not operate machine with missing,
broken, or unauthorized parts.
WARNING: Risk of Unsafe Operation
Unsafe operation of your air compressor
could lead to serious injury or death to
you or others.
HAZARD
WARNING: Risk of Serious Injury or Property Damage When
Transporting Compressor
Oil can leak or spill and could result
in fire or breathing hazard; serious
injury or death can result. oil leaks will
damage carpet, paint or other surfaces
in vehicles or trailers.
Always place COMPRESSOR on a
protective mat when transporting to
protect against damage to vehicle from
leaks. Remove COMPRESSOR from
vehicle immediately upon arrival at your
destination.
(Fire, Inhalation, Damage to Vehicle Surfaces)
HAZARD
SAVE THESE INSTRUCTIONS
How To Prevent ItWhat Could Happen
How To Prevent ItWhat Could Happen

8- ENG
A10055
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 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.
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.
SPECIFICATIONS
Model No. CLFRP350
Running Horsepower 1.3
Bore 2.363"
Stroke 0.890"
Voltage-Single Phase 120
Minimum Branch Circuit Requirement 15 amps
Fuse Type Time Delay
Air Tank Capacity (Gallon) 4.3
Approximate Cut-in Pressure 150 PSIG
Approximate Cut-out Pressure 180 PSIG
SCFM @ 40 PSIG 5.7
SCFM @ 90 PSIG 4.4
Accessories for this unit are available at the store the unit was purchased.
ACCESSORIES

9- ENG A10055
To Add Oil To Pump
Risk of Unsafe Operation. DO NOT ATTEMPT TO OPERATE
THIS AIR COMPRESSOR WITHOUT FIRST ADDING OIL TO
THE CRANKCASE. Serious damage can result from even limited operation
unless filled with oil and broken in correctly. Make sure to closely follow
initial start-up procedures.
Risk of Unsafe Operation. COMPRESSORS ARE SHIPPED
WITHOUT OIL. A small amount of oil may be present in the
pump upon receipt of the air compressor. This is due to plant testing and
does not mean the pump contains oil.
Risk of Unsafe Operation. Multi-Viscosity motor oils, like
10W30, should not be used in an air compressor. They leave
carbon deposits on critical components, thus reducing performance and
compressor life. Use air compressor oil only.
NOTE: Use an oil specifically formulated for use in an air compressor, such as
Porter-Cable PAS1 air compressor oil. Oil may be found at the store where the
air compressor was purchased.
1. Place unit on a level surface.
Risk from Flying Object.
Drain tank to release air
pressure before removing the dipstick.
See "To Drain Tank" in the Maintenance
section.
Risk from Flying Object.
Make sure air vent (B) in
dipstick is free from debris. If air vent is
blocked pressure can build in crankcase
causing damage to air compressor
and possible personal injury. See
Troubleshooting for correction.
2. Remove dipstick (A) and slowly fill
crankcase with oil. Crankcase capacity
is 6 fluid ounces (177.4 ml). Oil level
should be at the + (full) mark on the dipstick.
NOTE: If the oil is added too quickly, it will overflow and appear to be full.
3. Replace dipstick.
ASSEMBLY
N:\Manual Art\Air Comp\Art\ACC000401-450\Acc000402.eps
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+
-
A
B
+ full
- add

10- ENG
A10055
INSTALLATION
GROUNDING INSTRUCTIONS
RISK OF ELECTRICAL SHOCK. In the event of a short
circuit, grounding reduces the risk of shock by providing
an escape wire for the electric current. This air compressor must be
properly grounded.
The portable air compressor is equipped with a cord having a grounding wire
with an appropriate grounding plug (see following illustrations). The plug must
be used with an outlet that has been installed and grounded in accordance
with all local codes and ordinances.
1. The cord set and plug with this unit contains a grounding pin. This plug
MUST be used with a grounded outlet.
IMPORTANT: The outlet being used must be installed and grounded in
accordance with all local codes and ordinances.
2. Make sure the outlet being used
has the same configuration as the
grounded plug. DO NOT USE AN
ADAPTER. See illustration.
3. Inspect the plug and cord before each
use. Do not use if there are signs of
damage.
4. If these grounding instructions are not completely understood, or if in
doubt as to whether the compressor is properly grounded, have the
installation checked by a qualified electrician.
IMPROPER GROUNDING CAN RESULT IN ELECTRICAL
SHOCK.
Do not modify the plug provided. If it does not fit the available outlet, a
correct outlet should be installed by a qualified electrician.
Repairs to the cord set or plug MUST be made by a qualified electrician.
HOW TO SET UP YOUR UNIT
Location of the Air Compressor
Locate the air compressor in a clean, dry and well ventilated area. The air
compressor should be located at least 12" away from the wall or other
obstructions that will interfere with the flow of air. The air compressor pump
and shroud are designed to allow for proper cooling. The ventilation openings
on the compressor are necessary to maintain proper operating temperature. Do
not place rags or other containers on or near these openings.The air filter must
be kept clear of obstructions which could reduce air flow to the air compressor.
Grounding Pin
Grounded
Outlets
Plug

11- ENG A10055
Extension Cords
Using extension cords is not recommended. The use of extension cords will
cause voltage to drop resulting in power loss to the motor and overheating.
Instead of using an extension cord, increase the working reach of the air hose
by attaching another length of hose to its end. Attach additional lengths of
hose as needed.
If an extension cord must be used, be sure it is:
• a 3-wire extension cord that has a 3-blade grounding plug, and a 3-slot
receptacle that will accept the plug on the product
• in good condition
• no longer than 50 feet
• 12 gauge (AWG) or larger. (Wire size increases as gauge number
decreases. 10 AWG and 8 AWG may also be used. DO NOT USE 14 OR
16 AWG.)
Voltage and Circuit Protection
Refer to the specification chart for the voltage and minimum branch circuit
requirements.
Certain air compressors can be operated on a 15 amp circuit if the following
conditions are met.
1. Voltage supply through branch circuit is 15 amps.
2. Circuit is not used to supply any other electrical needs (lights, appliances,
etc.).
3. Extension cords comply with specifications.
4. Circuit is equipped with a 15 amp circuit breaker or 15 amp time delay
fuse. NOTE: If compressor is connected to a circuit protected by fuses,
use only time delay fuses. Time delay fuses should be marked "D" in
Canada and "T" in the US.
If any of the above conditions cannot be met, or if operation of the 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.

12- ENG
A10055
OPERATION
Know Your Air Compressor
READ THIS OWNER’S MANUAL AND SAFETY RULES BEFORE OPERATING
YOUR UNIT. Compare the illustrations with your unit to familiarize yourself with
the location of various controls and adjustments. Save this manual for future
reference.
Description of Operation
Become familiar with these controls before operating the unit.
On/Auto/Off Switch: Turn this switch
"ON/AUTO" to provide automatic power
to the pressure switch and "OFF" to
remove power at the end of each use.
Pressure Switch: The pressure switch
automatically starts the motor when
the air tank pressure drops below the
factory set "cut-in" pressure. It stops
the motor when the air tank pressure
reaches the factory set "cut-out"
pressure.
Safety Valve: If the pressure switch
does not shut off the air compressor at
its "cut-out" pressure setting, the safety
valve will protect against high pressure by "popping out" at its factory set
pressure (slightly higher than the pressure switch "cut-out" setting).
Outlet Pressure Gauge: The outlet pressure gauge indicates the air pressure
available at the outlet side of the regulator. This pressure is controlled by the
regulator and is always less than or equal to the tank pressure.
Tank Pressure Gauge: The tank pressure gauge indicates the reserve air
pressure in the tank.
Regulator: Controls the air pressure shown on the outlet pressure gauge. Pull
the knob out and turn clockwise to increase pressure and counterclockwise to
decrease pressure. When the desired pressure is reached push knob in to lock
in place.
Universal Quick-Connect Body: The universal quick-connect body accepts
the three most popular styles of quick-connect plugs- Industial, automotive
(Tru-flate), and ARO. One hand push-to-connect operation makes connections
simple and easy. The two quick connect bodies allow the use of two tools at
the same time.
Drain Valve: The drain valve is located at
the base of the air tank and is used to drain
condensation at the end of each use.
Cooling System (not shown): This compressor
contains an advanced design cooling system. At
the heart of this cooling system is an engineered
fan. It is perfectly normal for this fan to blow air over the pump head, clylinder
sleeve, and crankcase. You know the cooling system is working when air is
being expelled.
Air Compressor Pump (not shown): Compresses air into the air tank.
Working air is not available until the compressor has raised the air tank
pressure above that required at the air outlet.
Pressure
Switch
Tank
Pressure
Gauge
Outlet
Pressure
Gauge Regulator
On/Auto/Off
Switch
Drain Valve
Universal Quick-
Connect Body
Safety Valve

13- ENG A10055
Dipstick: Indicates the amount of oil in the pump, the +
mark indicates full and the - mark indicates oil needs to
be added. See Oil paragraphs in the Maintenance section
for instructions.
Motor Thermal Overload Protector (not shown): The
motor has an automatic reset thermal overload protector.
If the motor overheats for any reason, the overload
protector will shut off the motor. The motor must be
allowed to cool down before restarting. The compressor
will automatically restart after the motor cools.
Air Intake Filter: This filter is designed to clean air
coming into the pump. This filter must always be clean
and ventilation openings free from obstructions. See
"Maintenance".
Check Valve: When the air compressor is operating,
the check valve is "open", allowing compressed air to
enter the air tank. When the air compressor reaches
"cut-out" pressure, the check valve "closes", allowing air
pressure to remain inside the air tank.
Pressure Release Valve: The pressure release valve
located on the side of the pressure switch, is designed
to automatically release compressed air from the
compressor head and the outlet tube when the air
compressor reaches "cut-out" pressure or is shut off.
The pressure release valve allows the motor to restart
freely. When the motor stops running, air will be heard
escaping from this valve for a few seconds. No air
should be heard leaking when the motor is running,
or continuous leaking after unit reaches "cut-out"
pressure.
Pressure
Release
Valve
Check
Valve
Air Intake
Filter
Before Starting
Break-in Procedure
Risk of Unsafe Operation. Serious damage may result if
the following break-in instructions are not
closely followed.
This procedure is required before the air compressor is put into service and
when the check valve or a complete compressor pump has been replaced.
1. Make sure the On/Auto/Off lever is in the "OFF" position.
2. Check oil level in pump. See "Oil" paragraph in the "Maintenance" section
for instructions.
NOTE: Pull coupler back until it clicks to prevent air from escaping through the
quick connect.
How to Use Your Unit
How to Stop:
1. Set the On/Auto/Off lever to "OFF".
N:\Manual Art\Air Comp\Art\ACC000401-450\Acc000402.eps
Dipstick

14- ENG
A10055
How to Start:
1. Turn the On/Auto/Off lever to "ON/AUTO" and allow tank pressure to build.
Motor will stop when tank pressure reaches "cut-out" pressure.
2. Pull the regulator knob out and turn clockwise to increase pressure.
When the desired pressure is reached push knob in to lock in place. The
compressor is ready for use.
Risk to Breathing. Always operate the air compressor in
well-ventilated areas free of gasoline or other combustible
vapors. If the compressor is being used to operate a sprayer DO NOT
place near the spray area.
Before Each Start-Up:
1. Place On/Auto/Off lever to "OFF".
2. Pull the regulator knob out and turn counter-clockwise to set the outlet
pressure to zero.
3. Attach hose and accessories.
Risk of Flying Objects. Pull the regulator knob out and
turn counter-clockwise to set the outlet pressure to zero
when removing hose or accessories to prevent hose backlash.
NOTE: The hose or accessory will require a quick connect plug if the air outlet
is equipped with a quick connect socket.
Risk of Bursting. Too much air pressure causes a
hazardous risk of bursting. Check the manufacturer’s
maximum pressure rating for air tools and accessories. The regulator
outlet pressure must never exceed the maximum pressure rating.
3. Plug the power cord into the correct branch circuit receptacle. (Refer to
Voltage and Circuit Protection paragraph in the Installation section of this
manual.)
4. Open the drain valve fully (counter-clockwise) to permit air to escape and
prevent air pressure build up in the air tank during the break-in period.
5. Move the On/Auto/Off lever to "ON/AUTO" position. The compressor will start.
6. Run the compressor for 20 minutes. Make sure the drain valve is open and
there is minimal air pressure build-up in tank.
7. After 20 minutes, close the drain valve (clockwise). The air receiver will fill
to "cut-out" pressure and the motor will stop.
The compressor is now ready for use.

15- ENG A10055
MAINTENANCE
Customer Responsibilities
Daily or
after each
use
Before
each
use
●
●
●
●
Every
8
hours
Every
40
hours
Every
100
hours
●
●1
1- more frequent in dusty or humid conditions
Check Safety Valve
Drain Tank
Oil Leaks
Check Oil
Change Oil
Air Filter
NOTE: See "Operation" section for the location of controls.
To ensure efficient operation and longer life of the air compressor unit, a routine
maintenance schedule should be prepared and followed. The following routine
maintenance schedule is geared to an unit in a normal working environment
operating on a daily basis. If necessary, the schedule should be modified to
suit the conditions under which your compressor is used. The modifications will
depend upon the hours of operation and the working environment. Compressor
units in an extremely dirty and/or hostile environment will require a greater
frequency of all maintenance checks.
To Check Safety Valve
Risk of Bursting. If the safety valve does not work
properly, over-pressurization may occur, causing air tank
rupture or an explosion.
1. Before starting compressor, pull the ring on the safety valve to make
sure that the safety valve operates freely. If the valve is stuck or does not
operate smoothly, it must be replaced with the same type of valve.
Risk of Unsafe Operation. Unit cycles automatically when
power is on. When servicing, you may be exposed to
voltage sources, compressed air, or moving parts. Before servicing unit
unplug or disconnect electrical supply to the air compressor, bleed tank of
pressure, and allow the air compressor to cool.
To Drain Tank
1. Set the On/Auto/Off lever to "OFF" and unplug unit.
2. Risk of Flying Objects. Pull the regulator knob out and
turn counter-clockwise to set the outlet pressure to
zero when removing hose or accessories to prevent hose backlash.
3. Remove the air tool or accessory.
4. Pull ring on safety valve allowing air to bleed from the tank until tank
pressure is approximately 20 psi. Release safety valve ring.

16- ENG
A10055
5. Drain water from air tank by opening drain valve (counter-clockwise) on
bottom of tank.
Risk of Bursting. Water will condense in the air tank. If
not drained, water will corrode and weaken the air tank
causing a risk of air tank rupture.
6. After the water has been drained, close the drain valve (clockwise). The air
compressor can now be stored.
NOTE: If drain valve is plugged, release all air pressure. The valve can then be
removed, cleaned, and then reinstalled.
Oil
Risk of Bursting. Drain tank to release air pressure before
removing the dipstick or oil drain plug. See "To Drain
Tank" in this section.
Risk of Burns. Compressor head and cylinder sleeve are
very hot. Do not touch. Allow compressor to cool prior
to servicing.
Risk from Flying
Objects. Make sure air
vent (C) in dipstick is free from debris.
If air vent is blocked pressure can
build in crankcase causing damage to
air compressor and possible personal
injury. See Troubleshooting for
correction.
Risk of Unsafe
Operation. Overfilling
with oil will cause premature
compressor failure. Do not overfill.
Checking
1. Set the On/Auto/Off lever to "OFF" and unplug unit.
2. Remove dipstick (A) and check oil on dipstick for visual signs of
contaminants (water, dirt, etc).
3. Wipe oil from dipstick.
4. Replace dipstick and allow oil to collect on dipstick.
5. Remove dipstick and check oil level on dipstick, + mark indicates full and
the - mark indicates add oil. If oil level is below - mark, slowly add oil until
it reaches the + (full) mark on the dipstick.
NOTE: Use an oil specifically formulated for use in an air compressor, such as
Porter-Cable PAS1 air compressor oil. Oil may be found at the store where the
air compressor was purchased.
6. Replace dipstick (A).
Changing
1. Set the On/Auto/Off lever to "OFF" and unplug unit.
2. Remove the dipstick (A).
3. Remove the oil drain plug (B) and drain oil into a suitable container.
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-
A
C
B
(+)Full
(-)Add

17- ENG A10055
Air Filter - Inspection and Replacement
Risk of Burns. Compressor head and cylinder sleeve are
very hot. Do not touch. Allow compressor to cool prior
to servicing.
A dirty air filter will not allow the compressor to operate at full capacity. Keep
the air filter clean at all times.
1. Set the On/Auto/Off lever to "OFF" and unplug unit.
2. Remove the air filter cover.
3. Remove the air filter from filter cover.
IMPORTANT: Do not operate the compressor with the air filter removed.
4. Place new air filter into filter cover. Refer to the "Repair Parts" for the
correct part number.
5. Replace air filter cover and lock into place.
Motor
The motor has an automatic reset thermal overload protector. If the motor
overheats for any reason, the overload protector will shut off the motor. The
motor must be allowed to cool down before restarting. The compressor will
automatically restart after the motor cools.
If the overload protector shuts the motor off frequently, check for a possible
voltage problem. Low voltage can also be suspected when:
1. The motor does not get up to full power or speed.
2. Fuses blow out when starting the motor; lights dim and remain dim when
motor is started and is running.
3. See "Troubleshooting" for more information.
4. Replace the oil drain plug (B).
5. Slowly fill crankcase with oil. Crankcase capacity is 6 fluid ounces
(177.4 ml). Oil level should be at the + (full) mark on the dipstick.
6. Replace dipstick (A).

18- ENG
A10055
To Replace or Clean Check Valve
1. Release all air pressure from air tank. See "To Drain Tank" in the
Maintenance section.
2. Unplug unit.
3. Using an adjustable wrench loosen
outlet tube nut at air tank and pump.
Carefully move outlet tube away from
check valve.
4. Using an adjustable wrench loosen
pressure relief tube nut at air tank
and pressure switch. Carefully move
pressure relief tube away from check
valve.
5. Unscrew the check valve (turn
counterclockwise) using a 7/8" open
end wrench. Note the orientation for
reassembly.
6. Unscrew elbow fitting from the check valve (turn counterclockwise) using an
adjustable wrench. Note the orientation of the elbow fitting for reassembly.
7. Using a screwdriver, carefully
push the valve disc up and
down. NOTE: The valve disc
should move freely up and down
on a spring which holds the
valve disc in the closed position,
if not the check valve needs to
be cleaned or replaced.
8. Clean or replace the check valve. A solvent, such as paint or varnish
remover can be used to clean the check valve.
9. Apply sealant to the check valve threads. Reinstall the check valve and
elbow fitting (turn clockwise).
10. Replace the pressure release tube. Tighten nut.
11. Replace the outlet tube and tighten nut.
12. Perform the Break-in Procedure. See "Break-in Procedure" in the Operation
section.
SERVICE AND ADJUSTMENTS
Risk of Unsafe Operation. Unit cycles automatically when
power is on. When servicing, you may be exposed to
voltage sources, compressed air, or moving parts. Before servicing unit
unplug or disconnect electrical supply to the air compressor, bleed tank of
pressure, and allow the air compressor to cool.
ALL MAINTENANCE AND REPAIR OPERATIONS NOT LISTED MUST BE
PERFORMED BY TRAINED SERVICE TECHNICIAN.
Pressure
Relief
Tube
In closed position
disc is visible.
In open position
nothing is visible.
Screwdriver
Check
Valve
Nuts
Outlet Tube
Elbow Fitting

19- ENG A10055
STORAGE
Before you store the air compressor, make sure you do the following:
1. Review the "Maintenance" section on the preceding pages and perform
scheduled maintenance as necessary.
2. Set the On/Auto/Off lever to "OFF" and unplug unit.
3. Risk of Flying Objects. Pull the regulator knob out and
turn counter-clockwise to set the outlet pressure to
zero when removing hose or accessories to prevent hose backlash.
4. Remove the air tool or accessory.
5. Pull ring on safety valve allowing air to bleed from the tank until tank
pressure is approximately 20 psi. Release safety valve ring.
6. Drain water from air tank by opening drain valve on bottom of tank.
Risk of Bursting. Water will condense in the air tank. If
not drained, water will corrode and weaken the air tank
causing a risk of air tank rupture.
7. After the water has been drained, close the drain or drain valve.
NOTE: If drain valve is plugged, release all air pressure. The valve can then be
removed, cleaned, then reinstalled.
8. Protect the electrical cord and air hose from damage (such as being
stepped on or run over). Wind them loosely around the compressor
handle (If so equipped).
Store the air compressor in a clean and dry location.

20- ENG
A10055
TROUBLESHOOTING
PROBLEM CAUSE CORRECTION
Pressure switch does
not shut off motor when
compressor reaches "cut-
out" pressure.
Pressure switch "cut-out"
too high.
Move On/Auto/Off lever
to the "OFF" position, if
the unit does not shut off
contact a Trained Service
Technician. Contact a
Trained Service Technician.
Excessive
tank pressure
- safety valve
pops off.
Tube fittings are not tight
enough.
Tighten fittings where air
can be heard escaping.
Check fittings with soapy
water solution. DO NOT
OVERTIGHTEN.
Air leaks at
fittings.
Air leaks at
pressure switch
release valve.
(if equipped)
Defective pressure switch
release valve.
Contact a Trained Service
Technician.
Air leaks in air
tank or at air
tank welds.
Defective air tank. Air tank must be replaced.
Do not repair the leak.
Risk of
Bursting.
Do not drill into, weld or
otherwise modify air tank
or it will weaken. The tank
can rupture or explode.
Air leaks
between head
and valve plate.
Leaking seal. Contact a Trained Service
Technician.
Air leaks at or
inside check
valve
Check valve seat damaged. A defective check valve
results in a constant air leak
at the pressure release valve
when there is pressure in the
tank and the compressor
is shut off. Replace check
valve. Refer to the "To
Replace or Clean Check
Valve" in the "Service and
Adjustment" section.
Risk of Unsafe Operation. Unit cycles automatically when
power is on. When servicing, you may be exposed to
voltage sources, compressed air, or moving parts. Before servicing unit
unplug or disconnect electrical supply to the air compressor, bleed tank of
pressure, and allow the air compressor to cool.