Stanley FATMAX FMFP70979 User manual

FMFP70979
Contractor’s Electric 4 Gallon Hand Carry Air Compressor
Compresseurs d’air portatifs électriques de 4 gallons de classe entrepreneur
Compresor de aire portátil elèctrico de 4 galones para contratistas
INSTRUCTION MANUAL
GUIDE D'UTILISATION
MANUAL DE INSTRUCCIONES
INSTRUCTIVO DE OPERACIÓN, CENTROS DE SERVICIO Y PÓLIZA
DE GARANTÍA. ADVERTENCIA: LÉASE ESTE INSTRUCTIVOANTES
DE USAR EL PRODUCTO.
N217712
If you have questions or comments, contact us.
Pour toute question ou tout commentaire, nous contacter.
Si tiene dudas o comentarios, contáctenos.
1-800-262-2161 • www.stanleytools.com

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English
A. On/Off Switch
B. Air Tank Pressure Gauge
C. Regulated Pressure Gauge
D. Pressure Regulator
E. Quick Connect (if equipped)
F. Check Valve
G. Safety Valve
H. Air Tank Drain Valve
J. Pressure Switch
K. Pump Oil Dipstick
L. Pump Oil Drain Plug
M. Motor Reset
N. Air Intake Filter
Air Compressor Specications
MODEL FMFP70979
WEIGHT 56 lbs. (25.4 kg)
HEIGHT 16.75" (425.5 mm)
WIDTH 18.0" (457.2 mm)
LENGTH 15.0" (381 mm)
AIR TANK CAPACITY (GALLONS) 4.0 (15.1 liters)
APPROX CUT-IN PRESSURE
95 PSI (655 kPa)
APPROX. CUT-OUT PRESSURE
125 PSI (861.8 kPa)
SCFM @ 90 PSI (620.5 kPa) 3.4
MOTOR 1.1 HP (continuous)
Volts/Amps/Hertz 120V/14 A/60 Hz
RPM 3400
Minumum Branch Circuit
Requirement 15 Amp
PUMP OIL CAPACITY 6 oz. (177.4 ml)
K
L
F
M
N
G
FIG. 1
J
D
E
BC
A
H
Product may vary slightly from images - does not affect function.

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English
Denitions: Safety Guidelines
The definitions below describe the level of severity
for each signal word. Please read the manual and
pay attention to these symbols.
DANGER: Indicates an imminently hazardous
situation which, if not avoided, will result in death
or serious injury.
WARNING: Indicates a potentially hazardous
situation which, if not avoided, could result in death
or serious injury.
CAUTION: Indicates a potentially hazardous
situation which, if not avoided, may result in minor
or moderate injury.
NOTICE: Indicates a practice not related to personal
injury which, if not avoided, may result in property
damage.
PUMP
CYLNDER
AND HEAD
Hot Surfaces
FIG. 2
CHECK
VALVE
OUTLET TUBE
IF YOU HAVE ANY QUESTIONS OR COMMENTS ABOUT
THIS OR ANY STANLEY TOOL, CALL US TOLL FREE AT:
1-800-262-2161
Important Safety Instructions
WARNING: Do not operate this unit until you read and understand
this instruction manual for safety, operation and maintenance
instructions.
WARNING: 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 OSHA/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.
WARNING: This product contains chemicals, including lead,
known to the State of California to cause cancer, and birth
defects or other reproductive harm. Wash hands after handling.

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SAVE THESE INSTRUCTIONS
DANGER: RISK OF EXPLOSION OR FIRE
WHAT CAN HAPPEN HOW TO PREVENT IT
 • Itisnormalforelectrical
contacts within the motor
and pressure switch to
spark.
 • Alwaysoperatethecompres-
sor in a well ventilated area
free of combustible materials,
gasoline, or solvent vapors.
 • Ifelectricalsparksfrom
compressor come into con-
tact with flammable vapors,
they may ignite, causing fire
or explosion.
 • Ifsprayingflammablemateri-
als, locate compressor at
least 20 feet (6.1 m) away
from spray area. An addi-
tional length of hose may be
required.
 • Storeflammablematerialsin
a secure location away from
compressor.
 • Restrictinganyofthecom-
pressor ventilation openings
will cause serious overheat-
ing and could cause fire.
 • Neverplaceobjectsagainst
or on top of compressor.
 • Operatecompressorin
an open area at least 12"
(30.5 cm) 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.
 • 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 unat-
tended.
 • Alwaysremaininattendance
with the product when it is
operating.
 • Always turn off and unplug
unit when not in use.
DANGER: RISK TO BREATHING (ASPHYXIATION)
WHAT CAN HAPPEN HOW TO PREVENT IT
• 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
air tank. Breathing these
contaminant's can cause
seriousinjuryordeath.
• Neveruseairobtaineddirectly
from the compressor to supply
air for human consumption.
The compressor is not
equipped with suitable filters
and in-line safety equipment
for human consumption.
• Exposuretochemicals
in dust created by
power sanding, sawing,
grinding, drilling, and other
construction activities may be
harmful.
• Sprayedmaterialssuchas
paint, paint solvents, paint
remover, insecticides, weed
killers, may contain harmful
vapors and poisons.
• 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. Always use
certified safety equipment:
OSHA/MSHA/NIOSH
respiratory protection designed
for use with your specific
application.

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WARNING: RISK OF INJURY OR PROPERTY DAMAGE WHEN
TRANSPORTING OR STORING
WHAT CAN HAPPEN HOW TO PREVENT IT
• 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. Always keep
compressor level and never lie
on its side.
WARNING: RISK OF BURSTING
Air Tank: On February 26, 2002, the U.S. Consumer Product
Safety Commission published Release # 02-108 concerning air
compressor tank safety:
Air compressor receiver tanks do not have an infinite life. Tank life
is dependent upon several factors, some of which include operat-
ing conditions, ambient conditions, proper installations, field modi-
fications, and the level of maintenance. The exact effect of these
factors on air receiver life is difficult to predict.
If proper maintenance procedures are not followed, internal corro-
sion to the inner wall of the air receiver tank can cause the air tank
to unexpectedly rupture allowing pressurized air to suddenly and
forcefullyescape,posingriskofinjurytoconsumers.
Your compressor air tank must be removed from service by the end
of the year shown on your tank warning label.
The following conditions could lead to a weakening of the air tank,
and result in a violent air tank explosion:
WHAT CAN HAPPEN HOW TO PREVENT IT
• Failuretoproperlydrain
condensed water from
air tank, causing rust and
thinning of the steel air tank.
• Drainairtankdailyorafter
each use. If air tank develops
a leak, replace it immediately
with a new air tank or replace
the entire compressor.
• Modificationsorattempted
repairs to the air tank. • Neverdrillinto,weld,ormake any modifications to the air
tank or its attachments. Never
attempt to repair a damaged or
leaking air tank. Replace with a
new air tank.

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• Unauthorizedmodificationsto
the safety valve or any other
components which control air
tank pressure.
• Theairtankisdesignedto
withstand specific operating
pressures. Never make
adjustmentsorparts
substitutions to alter the factory
set operating pressures.
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.
• 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.
Tires:
• Over inflation of tires could
resultinseriousinjuryand
property damage.
 • Useatirepressuregaugeto
check the tires pressure before
each use and while inflating
tires; see the tire sidewall for
the correct tire pressure.
NOTE: Air tanks, compressors
and similar equipment used to
inflate tires can fill small tires very
rapidly.Adjustpressureregulator
on air supply to no more than the
rating of the tire pressure. Add air
in small increments and frequently
use the tire gauge to prevent over
inflation.
WARNING: RISK OF ELECTRICAL SHOCK
WHAT CAN HAPPEN HOW TO PREVENT IT
• Your air compressor is
powered by electricity.
Like any other electrically
powered device, if it is not
used properly it may cause
electric shock.
 • Never operate the
compressor outdoors when it
is raining or in wet conditions.
 • Never operate compressor
with protective covers
removed or damaged.
 • Repairs attempted by
unqualified personnel can
resultinseriousinjuryor
death by electrocution.
 • Any electrical wiring or repairs
required on this product
should be performed by a
Stanley Tools factory service
center or a Stanley Tools
authorized service center in
accordance with national and
local electrical codes.
 • Electrical Grounding:
Failure to provide adequate
grounding to this product
couldresultinseriousinjury
or death from electrocution.
See Grounding
Instructions under
Installation.
 • Make certain that the
electrical circuit to which the
compressor is connected
provides proper electrical
grounding, correct voltage
and adequate fuse protection.

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WARNING: RISK FROM FLYING OBJECTS
WHAT CAN HAPPEN HOW TO PREVENT IT
• 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 certified safety
equipment: ANSI Z87.1 eye
protection (CAN/CSA Z94.3)
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 air tank before
attempting maintenance,
attaching tools or accessories.
WARNING: RISK OF HOT SURFACES
WHAT CAN HAPPEN HOW TO PREVENT IT
• Touchingexposedmetal
such as the compressor
head, engine head, engine
exhaust 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
WHAT CAN HAPPEN HOW TO PREVENT IT
• Movingpartssuchasthe
pulley, flywheel, and belt can
causeseriousinjuryifthey
come into contact with you or
your clothing.
• Neveroperatethecompressor
with guards or covers which
are damaged or removed.
• Keepyourhair,clothing,and
gloves away from moving
parts.Looseclothes,jewelry,
or long hair can be caught in
moving parts.
• Airventsmaycovermoving
parts and should be avoided
as well.

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• 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.
• Anyrepairsrequiredonthis
product should be performed
by a Stanley Tools factory
service center or a Stanley
Tools authorized service
center.
WARNING: RISK OF UNSAFE OPERATION
WHAT CAN HAPPEN HOW TO PREVENT IT
• Unsafeoperationofyourair
compressor could lead to
seriousinjuryordeathtoyou
or others.
• Reviewandunderstandall
instructions and warnings in
this manual.
• Becomefamiliarwiththe
operation and controls of the
air compressor.
• Keepoperatingareaclear
of all persons, pets, and
obstacles.
• Keepchildren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fea
tures of this product.
• Equipareaofoperationwitha
fire extinguisher.
• Donotoperatemachinewith
missing, broken, or unautho-
rized parts.
WARNING: RISK OF FALLING
WHAT CAN HAPPEN HOW TO PREVENT IT
• 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.
CAUTION: RISK FROM NOISE
WHAT CAN HAPPEN HOW TO PREVENT IT
 • Under some conditions and
duration of use, noise from
this product may contribute
to hearing loss.
 • Alwayswearcertifiedsafety
equipment: ANSI S12.6
(S3.19) hearing protection.

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SAVE THESE INSTRUCTIONS
FOR FUTURE USE
FEATURES
ON/OFF SWITCH
Place this switch (A) in the ON position to G
A
J
provide automatic power to the pressure
switch and OFF to remove power at the
end of each use.
PRESSURE SWITCH
J
D
E
BC
AThe pressure switch (J)
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.
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.
SAFETY VALVE
If the pressure switch does not shut off the air compressor at its
cut-out pressure setting, the safety valve (G) will protect against
high pressure by popping out at its factory set pressure (slightly
higher than the pressure switch cut-out setting).
CHECK VALVE
Whentheaircompressorisoperating,thecheck
F
valve (F) 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.
TANK PRESSURE GAUGE
The tank pressure gauge (B) indicates the reserve air pressure in
the tank.
OUTLET PRESSURE GAUGE
The outlet pressure gauge (C) 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.
REGULATOR
The regulator (D) controls the air pressure shown on the outlet
pressure gauge. Turn regulator knob clockwise to increase
pressure and counterclockwise to decrease pressure.
UNIVERSAL QUICK CONNECT BODIES (IF EQUIPPED)
The universal quick connect body (E) accepts the three most
popular styles of quick connect plugs: Industrial, automotive, 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.

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DRAIN VALVE
The drain valve (H) is located at the base
H
of the air tank and is used to drain
condensation at the end of each use. See
Draining Air Tank under Maintenance.
COOLING SYSTEM
This compressor contains an advanced design cooling system.
It is normal for this fan to blow air through the vent holes in large
amounts. The cooling system is working when air is expelled.
AIR COMPRESSOR PUMP
The 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.
MOTOR OVERLOAD PROTECTOR
This motor has a manual thermal overload K
M
N
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. To restart:
1. Ensure the On/Off switch (A) is in the
OFF position and unplug unit..
2. Allow the motor to cool.
3. Depress the reset button (M) on the
motor.
OIL DIPSTICK
The oil dipstick (K) indicates the amount of oil in the pump. Check
pump oil daily, see Compressor Pump Oil under Maintenance.
AIR INTAKE FILTER
The filter (N) is designed to clean air entering the pump. To ensure
the pump continually receives a clean, cool, and dry air supply the
filter must always be clean and the filter intake must be free from
obstructions.
INSTALLATION
Assembly
INSTALLING HOSES
WARNING: Risk of unsafe operation. Firmly grasp hose in hand
when installing or disconnecting to prevent hose whip.
1. Ensure regulated pressure gauge reads 0 PSI (0 kPa).
2. Grasp the hose at the quick connect plug and push the plug
into the quick connect body (E). Coupler will snap into place.
3. Grasp the hose and pull to ensure coupler is seated.
DISCONNECTING HOSES
WARNING: Risk of unsafe operation. Firmly grasp hose in hand
when installing or disconnecting to prevent hose whip.
1. Ensure regulated pressure gauge reads 0 PSI (0 kPa).
2. Pull coupler on quick connect body back to release quick
connect plug on hose.
Grounding Instructions
This product must be grounded. In the event of an electrical short
circuit, grounding reduces the risk of electric shock by providing an
escape wire for the electric current. This product is equipped with
a cord (O) having a grounding wire with an appropriate grounding
plug (P). The plug must be plugged into an outlet (Q) that is
properly installed and grounded in accordance with all local codes
and ordinances.

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WARNING: Improper installation of the grounding plug is able to
result in a risk of electric shock. When repair or replacement of the
cord or plug is required, do not connect the grounding wire to either
flat blade terminal. The wire with insulation having an outer surface
that is green with or without yellow stripes is the grounding wire.
Check with a qualified electrician or serviceman when the grounding
instructions are not completely understood, or when in doubt as to
whether the product is properly grounded. Do not modify the plug
provided; if it does not fit the outlet, have the proper outlet installed
by a qualified electrician.
This product is for use on a nominal 120V circuit and has a
P
O
Q
grounding plug (P) similar to the plug illustrated. Only connect the
product to an outlet having the same
configuration as the plug. Do not use an
adapter with this product.
Extension Cords
Usingextensioncordsisnotrecommended.
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, use only a 3-wire extension cord
that has a 3-blade grounding plug (P), and a 3-slot receptacle (Q)
that accepts the plug on the product. Make sure your extension cord
isnotdamaged.Whenusinganextensioncord,besuretouseone
heavy enough to carry the current your product draws. For lengths
lessthan50ft(15,2m),12AWGextensioncordsshallbeused.An
undersized cord results in a drop in line voltage and loss of power
and overheating. (NOTE: Table below shows the correct size to use
dependingoncordlengthandnameplateampererating.Whenin
doubt, use the next heavier gauge. The smaller the gauge number,
the heavier the cord.)
Ampere
Rating
Range
Voltage Length of cord in ft
120V 25 ft 50 ft 100 ft
240V 50 ft 100 ft 200 ft
10 - 12
12 - 14
14 - 16
16
16
16
14
12
12
10
10
10
Voltage and Circuit Protection
Refer to the Voltage and Minimum Branch Circuit Requirements
under Specifications.
CAUTION: Certain air compressors can be operated on a
15 amp circuit if the following conditions are met.
 • VoltagesupplytocircuitmustcomplywiththeNationalElectrical
Code.
 • Circuitisnotusedtosupplyanyotherelectricalneeds.
 • Extensioncordscomplywithspecifications.
 • 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.

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Compatibility
Air tools and accessories that are run off the compressor must be
compatible with petroleum-based products. If you suspect that a
material is not compatible with petroleum products, an air line filter
for removal of moisture and oil vapor in compressed air is required.
NOTE: Always use an air line filter to remove moisture and oil vapor
when spraying paint.
Location
Place the air compressor in a clean, dry and well ventilated area
at least 12" (30.5 cm) away from the wall or other obstructions that
will interfere with the flow of air. Keep the compressor away from
areas that have dirt and/or volatile fumes in the atmosphere. These
impurities may clog the intake filter and valves, causing inefficient
operation.
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.
Place the air compressor on a flat surface resting on the rubber
feet.
NOISE CONSIDERATIONS
Consult local officials for information regarding acceptable noise
levels in your area. To reduce excessive noise, use vibration mounts
or silencers, relocate the unit or construct total enclosures or baffle
walls. Contact a Stanley Tools factory service center or call 1-800-
262-2161 for assistance.
ELECTRICAL
Refer to all safety instructions before using unit. Observe extension
cord safety instructions if necessary. Always move the On/Off
switch (A) to the OFF position before removing the plug from the
outlet.
TRANSPORTING
Whentransportingthecompressorinavehicle,trailer,etc.,ensure
that the tank is drained and the unit is secured. Use care when
driving to avoid tipping the unit over in the vehicle. Damage can
occur to the compressor or surrounding items if the compressor is
tipped.
MOVING
When moving the compressor, grasp the handle and carry the
compressor as close to the body as possible.
WARNING: Riskofunsafeoperation.Ensureproperfootingand
use caution when carrying compressor to avoid a loss of balance.
PREPARATION FOR USE
Pre-Start Checklist (Fig. 1)
1. Ensure the On/Off switch (A) is in the OFF position.
2. Plug the power cord into the correct branch circuit receptacle. See
Voltage and Circuit Protection under Installation.
3. Ensure air tank is drained, see Draining Air Tank under
Maintenance.
4. Ensure the drain valve (H) is closed.
5. Ensure safety valve (G) is functioning properly, see Checking
Safety Valve under Maintenance.
6. Check pump oil level, see Compressor Pump Oil under
Maintenance.
NOTICE: Do not operate without oil or with inadequate oil. Stanley
Tools factory is not responsible for compressor failure caused by
inadequate oil.
7. Turn regulator knob (D) counterclockwise until fully closed. Ensure
regulated pressure gauge reads 0 PSI (0 kPa).
8. Attach hose and accessories.

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WARNING: Risk of unsafe operation. Firmly grasp hose in hand
when installing or disconnecting to prevent hose whip.
9. Ensure all covers and labels are in place, legible (for labels) and
securely mounted. Do not use compressor until all items have
been verified.
WARNING: 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.
Initial Set-up (Fig. 1)
WARNING: Do not operate this unit until you read and understand
this instruction manual for safety, operation and maintenance
instructions.
BREAK-IN PROCEDURE
NOTICE: 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 for the first time and when the check valve or a compressor
pump/motor has been replaced.
1. Ensure the On/Off switch (A) is in the OFF position.
NOTE: If hose is not connected to Quick Connect body, 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.
See Voltage and Circuit Protection under Installation.
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/Off switch to the ON position. The compressor will
start.
5. Run the compressor for 20 minutes.
6. After 20 minutes, close the drain valve by turning clockwise.
The tank will fill to cut-out pressure and the motor will stop.
7. Compressed air will be available until it is used or bled off.
OPERATING PROCEDURES
Start-up (Fig. 1)
1. Follow Pre-Start Checklist under Preparation for Use.
2. Move the On/Off switch to the ON position and allow tank
pressure to build. Motor will stop when tank pressure reaches
cut-out pressure.
NOTICE: Compressed air from the unit may contain water
condensation and oil mist. Do not spray unfiltered air at an item
that could be damaged by moisture. Some air operated tools or
devices may require filtered air. Read the instructions for the air
tool or device.
 3.Adjust regulator (D) to desired setting. See Regulator under
Features.
Shut-down (Fig. 1)
1 Move On/Off switch (A) is in the OFF position. NOTE: If finished
using compressor, follow Steps 2 - 6. Unplug unit when not in
use.
2. Turn regulator knob (D) counterclockwise until fully closed. Ensure
regulated pressure gauge reads 0 PSI (0 kPa).
3. Remove hose and accessory.
4. Drain the air tank, see Draining Air Tank under Maintenance .
Ensure air tank pressure gauge reads 0 PSI (0 kPa).
WARNING: Risk of bursting. Drain air tank daily. Water will
condense in air tank. If not drained, water will corrode and weaken
the air tank causing a risk of air tank rupture.

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5. Allow the compressor to cool down.
 6.Wipeaircompressorcleanandstoreinasafe,nonfreezingarea.
MAINTENANCE
The following procedures must be followed when maintenance or
service is performed on the air compressor.
1. Ensure On/Off switch is in the OFF position.
2. Remove air compressor plug from outlet.
3. Drain air tank.
4. Allow air compressor to cool down before starting service.
NOTE: All compressed air systems contain maintenance parts (e.g.,
oil, filters, separators) that are periodically replaced. These used parts
may contain substances that are regulated and must be disposed of in
accordance with local, state, and federal laws and regulations.
NOTE: Take note of the positions and locations of parts during
disassembly to make reassembly easier.
NOTE: Any service operations not included in this section should be
performed by a Stanley Tools factory service center or a Stanley Tools
authorized service center.
Maintenance Chart
PROCEDURE DAILY WEEKLY SEE TANK
WARNING LABEL
Check Safety Valve (G) X
Inspect air filter X
Drain air tank X
Check for unusual noise/vibration X
Check for air leaks X1
Clean compressor exterior X
Remove tank from service X2
1 - To check for air leaks apply a solution of soapy water around joints. While
compressor is pumping to pressure and after pressure cuts out, look for air
bubbles to form.
2 - For more information, call 1-800-262-2161
Checking Safety Valve (Fig. 1)
WARNING:Hot surfaces. Risk of burn. Aftercooler, pump head, and
surrounding parts are very hot, do not touch (see the Hot Surfaces
identified in Fig. 2). Allow compressor to cool prior to servicing.
NOTICE: Risk of bursting. If the safety valve does not work properly,
over-pressurization may occur, causing air tank rupture or an
explosion.
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.
Checking Air Filter Element (Fig. 1)
WARNING:Hot surfaces. Risk of burn. Aftercooler, pump head, and
surrounding parts are very hot, do not touch (see the Hot Surfaces
identified in Fig. 2). Allow compressor to cool prior to servicing.
1. Ensure the On/Off switch (A) is in the OFF position.
2. Allow unit to cool.
3. Remove air filter (N) from unit.
4. Carefully pry filter top from base.
5. Remove element from filter base.
6. If element needs cleaning, blow out with air. Replace if needed.
Purchase replacement parts from your local dealer or authorized
service center. Always use identical replacement parts.
7. Place element back in filter base.

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8. Snap filter top to filter base.
9. Reassemble air filter to unit. Ensure exhaust outlet points down.
CAUTION: Risk of unsafe operation. Do not operate without air
inlet filter
Draining Air Tank (Fig. 1)
WARNING: Risk of unsafe operation. Risk from noise. Air
tanks contain high pressure air. Keep face and other body parts
away from outlet of drain. Use safety glasses [ANSI Z87.1 (CAN/
CSA Z94.3)] when draining as debris can be kicked up into face.
Use ear protection [ANSI S12.6 (S3.19)] as air flow noise is loud
when draining.
NOTE: All compressed air systems generate condensate that
accumulates in any drain point (e.g. tanks, filter, aftercoolers,
dryers). This condensate contains lubricating oil and/or substances
which may be regulated and must be disposed of in accordance with
local, state, and federal laws and regulations.
1. Ensure On/Off switch is in the OFF position.
2. Move compressor into an inclined position so drain valve (H) is
at the lowest point (this will assist in removing moisture, dirt, etc.
from air tanks)
3. Place a suitable container under the drain valve to catch
discharge.
4. Grasp knurled knob on drain valve.
5. Slowly rotate knob to gradually bleed air from air tank.
WARNING: Risk of bursting. Drain air tank daily. Water will
condense in air tank. If not drained, water will corrode and weaken
the air tank causing a risk of air tank rupture.
NOTICE: Drain water from air tank may contain oil and rust, which
can cause stains.
 6.Whenairtankpressuregaugereads10PSI(68,9kPa),rotate
valve to the fully open position.
7. Close drain valve when finished.
Compressor Pump Oil (Fig. 1)
CHECKING OIL
L
K
WARNING:Hot surfaces. Risk of burn.
Aftercooler, pump head, and surrounding parts
are very hot, do not touch (see the Hot Surfaces
identified in Fig. 2). Allow compressor to cool prior
to servicing.
1. Ensure On/Off switch is in the OFF position.
2. Place unit on a flat level surface.
3. Remove dipstick (K) and wipe clean.
4. Reinsert dipstick fully into oil fill port for a few
seconds to allow oil to collect on the dipstick.
5. Remove oil dipstick to read oil level. Oil should not exceed
MAX
MIN
top
raised line on dipstick. If oil is below lower mark,
add air compressor oil and follow Steps 4 - 6.
NOTE: When filling the crankcase, the oil flows
very slowly into the pump. If the oil is added too
quickly, it will overflow and appear to be full.
NOTICE: Overfilling with oil will cause premature
compressor failure. Do not overfill.
6. Replace dipstick.
CHANGING OIL
NOTE: Pump oil contains substances that are regulated and must
be disposed of in accordance with local, state and federal laws and
regulations.
WARNING: Hot surfaces. Risk of burn. Aftercooler, pump head,
and surrounding parts are very hot, do not touch (see the Hot
Surfaces identified in Fig. 2). Allow compressor to cool prior to
servicing.

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1. Ensure On/Off switch is in the OFF position.
2. Allow the unit to cool.
3. Remove air compressor plug from outlet.
4. Drain air tank.
5. Locate a suitable container under pump drain plug (L).
6. Remove the dipstick (K) from crankcase.
7. Remove the oil drain plug (L).
8. Allow ample time for all oil to drain out. (Tilting the compressor
towards the drain plug will assist in draining.)
9. Install the oil drain plug.
10. Fill pump with air compressor oil, SAE 40.
11. Replace dipstick.
Lubrication and Oil
NOTICE: The compressor was shipped without oil in the crankcase.
A small amount of oil may be present in the pump upon receipt of the
air compressor. This is due to testing and does not mean the pump
contains oil. 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. Closely
follow Initial Set-up under Operation.
NOTICE:  Multi-viscosity motor oils, like 10W-30, 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,SAE40.
1. Place unit on a level surface. K
2. Remove dipstick (K) and slowly add air
compressor oil (supplied). NOTE: See
Specifications for pump oil capacity.
NOTICE: Overfilling with oil will cause premature
compressor failure. Do not overfill.
3. Replace dipstick.
ACCESSORIES
Recommended accessories for use with your tool are available
for purchase from your local dealer or authorized service center. If
you need assistance in locating any accessory for your tool, please
contact Stanley Tools, 701 East Joppa Road, Baltimore, MD 21286,
call 1-800-262-2161 or visit our website www.stanleytools.com
CAUTION: The use of any other accessory not recommended for
use with this tool could be hazardous. Use only accessories rated
equal to or higher than the rating of the air compressor.
SERVICE INFORMATION
Please have the following information available for all service calls:
Model Number ____________ Serial Number _________________
Date and Place of Purchase ______________________________

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N118967
HOT SURFACE. RISK OF
BURNS. DO NOT TOUCH.
SUPERFICIE CALIENTE.
RIESGO DE QUEMADURAS.
NO TO CAR.
SURFACE TRÈS CHAUDE.
RISQUES DE BRÛLURES.
NE PAS TOUCHER.
N143858
2023 2023 2023
WARNING
ADVERTENCIA
AVERTISSEMENT
A17566
DRENE EL TANQUE A DIARIO O DESPUÉS DE CADA USO. LA ACUMULACIÓN DE ALLAFRACOVORPYEUQNATLEDORTNEDNÓISORROCRANOISACOEDEUPNÓICASNEDNOC
DEL TANQUE. CONSULTE EL MANUAL PARA CONOCER LOS PROCEDIMIENTOS DE INSPECCIÓN. PARA DRENAR EL TANQUE,
ABRA LA VÁLVULA LENTAMENTE E INCLINE EL COMPRESOR PARAELIMINAR EL AGUA ACUMULADA.
RÉSERVOIR DE VIDANGE QUOTIDIEN
OU APRÈS CHAQUE UTILISATION. L'HABILLAGE
DE CONDENSATION PEUT CAUSER LA CORROSION À L'INTÉRIEUR DU RÉSERVOIR AYANT
POUR RÉSULTAT L'ÉCHEC DE RÉSERVOIR. VOIR LE MANUEL POUR DES PROCÉDURES D'INSPECTION. À LA VALVE
OUVERTE DE RÉSERVOIR DE VIDANGE LENTEMENT ET AU COMPRESSEUR D'INCLINAISON À L'EAU ACCUMULÉE VIDE.
DRAIN TANK DAILYOR AFTER EACH USE. CONDENSATION BUILD-UP MAY CAUSE CORROSION
INSIDE TANK RESULTING IN TANK FAILURE. SEE MANUAL FOR INSPECTION PROCEDURES. TO DRAIN TANK
OPEN VALVE SLOWLY AND TILT COMPRESSOR TO EMPTY ACCUMULATED WATER.
Repairs
To assure product SAFETY and RELIABILITY, repairs, maintenance
and adjustment should be performed by a Stanley Tools factory
service center, a Stanley Tools authorized service center or other
qualified service personnel. Always use identical replacement parts.
Full One Year Warranty
Stanley FatMax heavy duty industrial tools are warranted for one
year from date of purchase. We will repair, without charge, any
defects due to faulty materials or workmanship. For warranty repair
information, call 1-800-262-2161 This warranty does not apply to
accessories or damage caused where repairs have been made or
attempted by others. This warranty gives you specific legal rights
and you may have other rights which vary in certain states or
provinces.
LATIN AMERICA: This warranty does not apply to products sold
in Latin America. For products sold in Latin America, see country
specific warranty information contained either in the packaging, call
the local company or see website for warranty information.
FREE WARNING LABEL REPLACEMENT: If your warning labels
become illegible or are missing, call 1-800-262-2161 for a free
replacement.

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GLOSSARY
CFM: Cubic feet per minute.
SCFM: Standard cubic feet per minute; a unit of measure of air delivery.
PSI: Pounds per square inch; a unit of measure of pressure.
kPa (kilopascal): Metric pressure measurement. 1 kilopascal equal 1000 pascals.
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whenaccessoryisused.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: The 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.
Troubleshooting Guide
This section provides a list of the more frequently encountered malfunctions, their causes and corrective actions. The operator or
maintenance personnel can perform some corrective actions, and others may require the assistance of a qualified Stanley Tools technician
or your dealer.
Problem Code
Excessive air tank pressure-safety valve pops off ......................................................................1,2
Air leaks ....................................................................................................................................3
Air leaks in air tank or at air tank welds ....................................................................................4
Air leaks between head and valve plate....................................................................................5
Air leaks from safety valve.........................................................................................................6
Knocking Noise..........................................................................................................................6,16,17
Pressure reading on the regulated pressure gauge drops when an accessory is used ...........7

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Compressor is not supplying enough air to operate accessories..............................................8,9,10,11,12,15
Regulator knob has continuous air leak ....................................................................................13
Regulator will not shut off air outlet ...........................................................................................13
Moisture in pump crankcase......................................................................................................14,18
Motor will not run .......................................................................................................................11,19,20,21,22,23,24,25,26
Troubleshooting Codes
CODE POSSIBLE CAUSE POSSIBLE SOLUTION
1Pressure switch does not shut off motor when
compressor reaches cut-out pressure Set the On/Off switch to OFF, if the unit does not shut off contact a Stanley
Tools factory service center or a Stanley Tools authorized service center.
2Pressure switch cut-out too high Contact a Stanley Tools factory service center or a Stanley Tools authorized
service center.
3Tube fittings are not tight enough Tighten fittings where air can be heard escaping. Check fittings with soapy
water solution. Do Not Overtighten.
4Defective air tank Air tank must be replaced. Do not repair the leak.
WARNING: Risk of bursting. Do not drill into, weld or otherwise modify air
tank or it will weaken. The air tank can rupture or explode.
5Leaking seals Contact a Stanley Tools factory service center or a Stanley Tools authorized
service center.
6Defective safety valve Operate safety valve manually by pulling on ring. If valve still leaks, it must
be replaced.
7Regulatorisnotadjustedcorrectlyforacces-
sory being used It is normal for some pressure drop to occur when an accessory is used, adjustthe regulator as instructed in Regulator under Features if pressure
drop is excessive.
NOTE:Adjusttheregulatedpressureunderflowconditionswhileaccessory
is being used.
8Prolonged excessive use of air Decrease amount of air usage.

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CODE POSSIBLE CAUSE POSSIBLE SOLUTION
9Compressor is not large enough for acces-
sory Check the accessory air requirement. If it is higher than the SCFM or pres- sure supplied by your air compressor, a larger compressor is needed to
operate accessory.
10 Hole in air hose Replace air hose.
11 Check valve restricted Remove, clean or replace.
12 Air leaks Tighten fittings.
13 Regulator is damaged Replace.
14 Unit operating in damp or humid conditions Move unit to a dry well ventilated area
15 Restricted air intake filter Clean or replace air intake filter
16 Pump oil is low Add air compressor oil (SAE 40) to pump. See Compressor Pump Oil under
Maintenance.
17 Carbon build-up in pump. Contact a Stanley Tools factory service center or a Stanley Tools authorized
service center.
18 Detergent type oil being used in pump Drain oil and refill pump with air compressor oil (SAE 40).
19 Motor overload protection switch has tripped See Motor Overload under Features.
20 Extension cord is wrong length or gauge Check for proper gauge wire and cord length. See Extension Cords under
Installation.
21 Loose electrical connections Contact a Stanley Tools factory service center or a Stanley Tools authorized
service center.
22 Possible defective motor or starting
capacitor
Contact a Stanley Tools factory service center or a Stanley Tools authorized
service center.