Porter-Cable CPF23400S User manual

Instruction
manual
The Model and Serial No. plate is located on the main
housing of the tool. Record these numbers in the
spaces below and retain for future reference.
Model No. ______________________________________
Type ___________________________________________
Serial No. _______________________________________
IMPORTANT
Please make certain that the person who is
to use this equipment carefully reads and
understands these instructions before
starting operations.
Part No. D23246-032-1
ESPAÑOL: PÁGINA 23
FRANÇAISE : PAGE 45
To learn more about Porter-Cable
visit our website at:
http://www.porter-cable.com
Copyright © 2003 Porter-Cable Corporation
PROFESSIONAL POWER TOOLS
Side Stack
Compressor
MODEL
CPF23400S

2 - ENG
D23246
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.
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

3 - ENG D23246
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
D23246
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 D23246
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
D23246
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 It
What Could Happen
How To Prevent It
What Could Happen
How To Prevent It
What Could Happen

7 - ENG D23246
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 It
What Could Happen
How To Prevent It
What Could Happen

8 - ENG
D23246
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
Amperage at Max. Load 15 Amps
Tank Size 4 Gallon
* 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.
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
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.
SPECIFICATIONS

9 - ENG D23246
INSTALLATION
HOW TO SET UP YOUR UNIT
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.
Grounding Pin
Grounded
Outlets
Plug
ASSEMBLY
Unpacking
1. Remove unit from carton and discard all packaging.
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.
Accessories for this unit are available at the store the unit was purchased.
ACCESSORIES

10 - ENG
D23246
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 Parts Manual 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.

11 - ENG D23246
Description of Operation
Become familiar with these controls before operating the unit.
On/Auto/Off Switch: Turn this switch ON 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 (not shown): 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- Industrial, 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.
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.
Universal
Quick
Connect
Bodies
Regulator
Outlet
Pressure
Gauge
Pressure
Switch
On/Auto/
Off
Switch
Air
Compressor
Pump
Tank
Pressure
Gauge

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 through the
vent holes in large amounts. You know that the
cooling system is working when air is being expelled.
Air Compressor Pump: 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.
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.
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.
12 - ENG
D23246
How to Use Your Unit
How to Stop:
1. Set the On/Auto/Off lever to "OFF".
Before Starting
Break-in instructions
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.
NOTE: If quick connect is installed, pull coupler back until it clicks to prevent air
from escaping through the quick connect.
2.
Plug the power cord into the correct branch circuit receptacle. (Refer to
Voltage and Circuit Protection paragraph in the Installation section of this
manual.)
3. Open the drain valve fully (counterclockwise) to permit air to escape and
prevent air pressure build up in the air tank during the break-in period.
Check
Valve
Drain
Valve
Pressure Release
Valve

13 - ENG D23246
How to Start:
1. Turn the On/Auto/Off lever to "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.
NOTE: 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 regulator knob out, turn counter-clockwise until it stops. Push knob in
to lock in place.
3. Attach hose and accessories. NOTE: The hose or accessory will require a
quick connect plug if the air outlet is equipped with a quick connect.
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.
4. Move the On/Auto/Off lever to "ON/AUTO" position. The compressor will
start.
5. Run the compressor for 15 minutes. Make sure the drain valve is open and
there is minimal air pressure build-up in tank.
6. After 15 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.

14 - ENG
D23246
MAINTENANCE
Customer Responsibilities
Daily or
after
each
use
Before
each
use
●
●
Yearly
●1
1- more frequent in dusty or humid conditions
Check Safety Valve
Drain Tank
Air Filter
NOTE: See "Operation" section for the location of controls.
To ensure efficient operation and longer life of the air compressor outfit, a
routine maintenance schedule should be prepared and followed. The following
routine maintenance schedule is geared to an outfit 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 outfits in an extremely dirty and/or hostile
environment will require a greater frequency of all maintenance checks.
Unit cycles automatically when power is on. When
performing maintenance, you may be exposed to voltage
sources, compressed air, or moving parts. Personal injuries can occur.
Before performing any maintenance or repair, disconnect power source
from the compressor and bleed off all air pressure.
To Check Safety Valve
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.
To Drain Tank
1. Set the On/Auto/Off lever to "OFF".
2. Pull the regulator knob out and turn counterclockwise to set the outlet
pressure to zero.
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.
5. Drain water from air tank by opening drain valve (counter-clockwise) on
bottom of tank.
Air compressor pump intake
and exhaust valves ●
Frequently

15 - ENG D23246
Air Filter Inspection and Replacement
Hot surfaces. Risk of burn. Compressor heads are
exposed when filter cover is removed. Allow compressor to
cool prior to servicing.
Keep the air filter clean at all times. Do not operate the air
compressor with the air filter removed.
A dirty air filter will not allow the compressor pump to operate at full capacity.
Before you use the compressor pump, check the air filter to be sure it is clean
and in place.
If it is dirty, replace it with a new filter. On some models,the filter may be
removed by using a pair of needle nose pliers or a screwdriver. Pull or pry out
the old filter and carefully clean the filter area. Push in the new air filter.
Air Compressor Pump Intake and Exhaust Valves
Once a year have a Trained Service Technician check the air compressor pump
intake and exhaust valves.
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, the reinstalled.

16 - ENG
D23246
To Replace or Clean Check Valve
1. Release all air pressure from air tank. See "To Drain Tank" in the
Maintenance section.
2. Unplug outfit.
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. 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.
7. Clean or replace the check valve.
A solvent, such as paint or varnish
remover can be used to clean the
check valve.
8. Apply sealant to the check valve
threads. Reinstall the check valve (turn clockwise).
9. Replace the pressure release tube. Tighten nuts.
10. Replace the outlet tube and tighten nuts.
11. Perform the Break-in Procedure. See "Break-in Procedure" in the
Operation section.
Unit cycles automatically when power is on. When doing
Maintenance, you may be exposed to voltage sources,
compressed air or moving parts. Personal injuries can occur. Before
performing any Maintenance or repair, unplug the compressor and bleed
off all air pressure.
ALL MAINTENANCE AND REPAIR OPERATIONS NOT LISTED MUST BE
PERFORMED BY TRAINED SERVICE TECHNICIAN.
SERVICE AND ADJUSTMENTS
Before servicing:
• Unplug or disconnect electrical supply to the air compressor.
• Bleed tank of pressure.
• Allow the air compressor to cool.
In closed position
disc is visible.
In open
position
nothing is
visible.
Screwdriver
Outlet Tube
Pressure
Relief Tube Check Valve
NutNut
Nut

17 - ENG D23246
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".
3. Turn the regulator counterclockwise and set the outlet pressure to zero.
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.
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.

18 - ENG
D23246
TROUBLESHOOTING
Performing repairs may expose voltage sources, moving
parts or compressed air sources, moving parts or
compressed air sources. Personal injury may occur. Prior to attempting
any repairs, unplug the air compressor and bleed off all air tank air
pressure.
PROBLEM
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
outfit 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.
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 the "To Replace
or Clean Check Valve" in the
"Service and Adjustment"
section.
CAUSE CORRECTION

19 - ENG D23246
PROBLEM CAUSE CORRECTION
Compressor is
not supplying
enough air to
operate
accessories.
Prolonged excessive use of
air.
Compressor is not large
enough for air requirement.
Hole in hose.
Check valve restricted.
Air leaks.
Restricted air intake filter
Decrease amount of air usage.
Check the accessory air
requirement. If it is higher than
the SCFM or pressure supplied
by your air compressor, you
need a larger compressor.
Check and replace if required.
Remove and clean, or replace.
Tighten fittings.
Clean or replace air intake
filter. Do not operate the air
compressor with the filter
removed. Refer to the "Air
Filter" paragraph in the
"Maintenance " section.
Pressure
reading on the
regulated
pressure gauge
(if equipped)
drops when an
accessory is
used.
It is normal for "some"
pressure drop to occur.
If there is an excessive amount
of pressure drop when the
accessory is used, adjust the
regulator as instructed in the
Operation section.
NOTE: Adjust the regulated
pressure under flow conditions
(while accessory is being
used).
Possible defect in safety
valve.
Operate safety valve manually
by pulling on ring. If valve still
leaks, it should be replaced.
Air leak from
safety valve.
Clean or replace. See Air Filter
paragraph in the Maintenance
section.
Dirty air filter.
Restricted air
intake
Damaged regulator Have checked by a Trained
Service Technician.
Regulator knob
has continuous
air leak.
Regulator will
not shut off air
outlet.
Damaged regulator Have checked by a Trained
Service Technician.

20 - ENG
D23246
PROBLEM CAUSE CORRECTION
Motor will not
run.
Fuse blown, circuit breaker
tripped.
1. Check fuse box for blown
fuse and replace as
necessary. Reset circuit
breaker. Do not use a fuse
or circuit breaker with
higher rating than that
specified for your
particular branch circuit.
2. Check for proper fuse.
You should use a time
delay fuse.
3. Check for low voltage
conditions and/or proper
extension cord.
4. Disconnect the other
electrical appliances from
circuit or operate the
compressor on its own
branch circuit.
Motor overload protection
switch has tripped
Let motor cool off and
overload switch will
automatically reset.
Tank pressure exceeds
pressure switch "cut-in"
pressure.
Motor will start automatically
when tank pressure drops
below "cut-in" pressure of
pressure switch.
Loose electrical
connections.
Check wiring connection
inside pressure switch and
terminal box area.
Have checked by a Trained
Service Technician.
Check valve stuck open. Remove and clean, or replace.
Possible defective motor or
starting capacitor.
Have checked by a Trained
Service Technician. Do not
operate the compressor in the
paint spray area. See
flammable vapor warning.
Paint spray on internal
motor parts.
Bleed the line by pushing the
lever on the pressure switch to
the "OFF" position; if the valve
does not open, replace switch.
Pressure release valve on
pressure switch has not
unloaded head pressure.
Knocking Noise. Possible defect in safety
valve.
Operate safety valve manually
by pulling on ring. If valve still
leaks, it should be replaced.
Defective check valve. Remove and clean, or replace.