Porter-Cable CFFC350C User manual

Pancake Compressor
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. A09770-051-0
®
ESPAÑOL: PÁGINA 23
FRANÇAISE : PAGE 45
To learn more about Porter-Cable
visit our website at:
http://www.porter-cable.com
MODEL
CFFC350C
CFFR350C
Copyright © 2005 Porter-Cable Corporation
PROFESSIONAL POWER TOOLS

2 - ENG
A09770
SAFETY GUIDELINES - DEFINITIONS
Indicates an imminent-
ly 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 under-
stand. 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 chemi-
cals 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 A09770
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
A09770
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 A09770
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
A09770
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 A09770
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
A09770
GLOSSARY
DUTY CYCLE
Accessories for this unit are available at the store the unit was purchased.
ACCESSORIES
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.
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. CFFC350C / CFFR350C
Running Horsepower 1.6
Bore 2.375"
Stroke 1.35"
Voltage-Single Phase 120/60/1
Minimum Branch Circuit Requirement 15 amps
Fuse Type Time Delay
Air Tank Capacity (Gallon) 4
Approximate Cut-in Pressure 110 PSIG
Approximate Cut-out Pressure 135 PSIG
SCFM @ 40 PSIG 7.7
SCFM @ 90 PSIG 5.3

9 - ENG A09770
ASSEMBLY
Unpacking
1. Remove unit from carton and discard all packaging.
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.
Risk of Electrical
Shock. 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 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).
1. The cord set and plug with this
unit contains a grounding pin.
This plug MUST be used with a
grounded outlet.
INSTALLATION
HOW TO SET UP YOUR UNIT
Grounding Pin
Grounded
Outlets
Plug
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.
Lubrication and Oil
This unit needs no lubrication or oiling.

10 - ENG
A09770
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 to circuit must
comply with the National
Electrical Code.
2. Circuit is not used to supply any
other electrical needs.
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 A09770
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.
Tank Pressure Gauge
Pressure
Switch
Outlet Pressure Gauge
Quick
Connect
Regulator
Safety Valve
On/
Auto/
Off
Switch
Regulator: Controls the air
pressure shown on the outlet
pressure gauge. Turn regulator knob
clockwise to increase pressure
and counterclockwise to decrease
pressure.
Quick Connect Body: The quick
connect body accepts Industrial quick
connect plugs to make connections
simple and easy.
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 (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.
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).
Tank Pressure Gauge: The tank
pressure gauge indicates the reserve
air pressure in the tank.
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.

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 after the unit reaches "cut-out"
pressure.
Motor 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.
12 - ENG
A09770
Check Valve
Before First Start Up
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. 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 (counter-
clockwise) fully to permit air to
escape and prevent air pressure
build up in the air tank during the
break-in period.
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 by turning clockwise. The
air receiver will fill to "cut-out"
pressure and the motor will
stop.
The compressor is now ready for use.
Pressure
Release Valve
How to Use Your Unit
How to Stop:
1. Set the On/Auto/Off lever to
"Off".
Drain
Valve
Air Intake Filter (not shown): 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".

13 - ENG A09770
Before Each Start-Up:
1. Place On/Auto/Off lever to "Off".
2. Turn the regulator knob counter-
clockwise to set the outlet
pressure to zero.
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 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.
MAINTENANCE
Customer Responsibilities
Daily
or after
each
use
Before
each
use
●
●
Every
100
hours Yearly
●1
1- more frequent in dusty or humid conditions
Check Safety Valve
Drain Tank
Air Filter
To ensure efficient operation and
longer life of the air compressor,
a routine maintenance schedule
Air compressor pump intake
and exhaust valves ●
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.
should be prepared and followed. The
above routine maintenance schedule
is geared to an air compressor in a
normal working environment operating
on a daily basis. If necessary, the
schedule should be modified to
suit the conditions under which
your air compressor is used. The
modifications will depend upon
the hours of operation and the
working environment. Compressors
in an extremely dirty and/or hostile
environment will require a greater
frequency of all maintenance checks.
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. Turn regulator knob clockwise to
increase pressure and stop when
desired pressure is reached.
The compressor is ready for use.

14 - ENG
A09770
To Drain Tank
1. Set the On/Auto/Off lever to "Off"
and unplug unit.
2. Turn the regulator knob counter-
clockwise 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.
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, the
reinstalled.
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.
Air Compressor Pump Intake
and Exhaust Valves
Once a year have a Trained Service
Technician check the air compressor
pump intake and exhaust valves.
Air Filter Inspection and
Replacement
Hot surfaces.
Risk of burn.
Compres-sor 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.
1. Remove the air filter cover.
2. Remove the air filter from filter
cover.
3. Place new air filter into filter
cover. Refer to the "Repair Parts"
for the correct part number.
4. Replace air filter cover and lock
into place.
NOTE: See "Operation" section for
the location of controls.

6. Unscrew elbow fitting from
the check valve (turn counter-
clockwise) 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.
15 - ENG A09770
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.
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.
Pressure Relief Tube
Check Valve
Outlet Tube
Elbow Fitting
Screwdriver
Nuts

16 - ENG
A09770
6. Assemble the regulator and
orient as shown.
NOTE: Arrow indicates flow of
air. Make sure it is pointing in the
direction of air flow.
7. Reapply pipe sealant to outlet
pressure gauge and quick
connect.
8. Reassemble outlet pressure
gauge and quick connect. Orient
outlet pressure gauge to read
correctly. Tighten connect with
wrench.
To Replace Regulator
1. Release all air pressure from air
tank. See "To Drain Tank" in the
Maintenance section.
2. Unplug unit.
3. Using an adjustable wrench
remove the outlet pressure
gauge and quick connect from
the regulator.
4. Remove the regulator.
5. Apply pipe sealant tape to the
nipple on the standpipe.
Nipple
Outlet
Pressure
Gauge
Regulator
Quick
Connect Arrow
Regulator
Regulator

17 - ENG A09770
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. 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.
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.
9. Store the air compressor in a
clean and dry location.

18 - ENG
A09770
TROUBLESHOOTING
Risk of Unsafe Operation. 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.
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.
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.
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.
Contact a Trained Service
Technician.

19 - ENG A09770
PROBLEM CAUSE CORRECTION
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 following
the instructions in the
"Description of Operation"
paragraph 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.
Defective check valve. Remove and clean, or
replace.
Knocking Noise.
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.
Damaged regulator. Replace.
Regulator knob
has continuous
air leak.
Pressure reading
on the regulated
pressure gauge
drops when an
accessory is
used.

20 - ENG
A09770
Regulator will
not shut Off air
outlet.
Damaged regulator. Replace.
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.
Extension cord is wrong
length or gauge.
Check for proper gauge wire
and cord length.
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.