20 Gallon Air Compressor
20 Gallon Air Compressor
Model: 52401
*Actual product may vary slightly
88052401
01/2014
Important Operating Instructions
CALIFORNIA PROPOSITION 65
WARNING: You can create dust when you cut, sand, drill or grind materials such
as wood, paint, metal, concrete, cement, or other masonry. This dust often
contains chemicals known to cause cancer, birth defects, or other reproductive
harm. Wear protective gear.
WARNING: This product or its power cord may contain chemicals, including
lead, known to the State of California to cause cancer and birth defects or other
reproductive harm. Wash hands after handling.
Important!
When using equipment, a few safety precautions must be observed to avoid injuries
and damage. Please read the complete operating manual with due care. Keep this
manual in a safe place, so that the information is available at all times. If you give the
equipment to any other person, give them these operating instructions as well. We
accept no liability for damage or accidents which arise due to non-observance of these
instructions and the safety information herein.
SPECIFICATIONS
Running horsepower:
2 HP
Maximum Pressure:
130 PSI
CFM @ 40 PSI:
6 CFM
CFM @ 90 PSI:
4 CFM
Voltage:
Single Phase; 120V
Motor:
3300 RPM
Tank:
20 gallons
Oil Free Direct Drive Pump
Any failures made in following the safety regulations and instructions may result
in an electric shock, fire, and/or serious injury.
2
Important Operating Instructions
GENERAL SAFETY INSTRUCTIONS
• Keep work area clean. Messy areas and cluttered workbenches invite personal injury
and/or property damage.
• Keep children and visitors away. All children should be kept away from the work area.
DO NOT let children handle the compressor or extension cord. Maintain a safe distance
for any person near the work area.
• Operating any tools or equipment under the influence of drugs, alcohol, or medication
can cause personal injury to yourself and others.
• Wear proper apparel. Remove your jewelry before using air compressor. Do not wear
loose clothing, necklaces, rings, bracelets, or other jewelry, which may get caught in
moving parts. Nonskid footwear and electrically non-conductive gloves are highly
suggested while working. Wear protective hair covering to contain long hair.
• Protect your eyes. The operation of any air compressor can result in foreign objects
being thrown into the eyes, which can result in severe eye damage. Always wear eye
protection that meets ANSI Z28.1 specifications during air compressor operation.
Eyeglasses are not always safety glasses.
• Be responsible for your hearing. Wear hearing protection during extended periods of
operation.
• Use the right tool. Use tools properly and for their intended use. Do not force a small
tool to do the job of a heavy-duty tool. Using the right tool to do the right job will make
doing the job safer.
• Check damaged parts before use of any air tools or attachments. A guard or other part
that is damaged should be carefully checked to ensure that it will operate properly and
perform its intended function. Check for misalignment or binding of moving parts,
breakage of parts, mounting, or any other conditions that may affect tool operation. A
guard or other part that is damaged should be properly replaced. See replacement parts
list for additional details.
• Avoid unintentional starting. Be sure that your air compressor is in the OFF position
before plugging it into a power cord or electrical receptacle.
• Store all maintenance tools away from the immediate area before turning ON your air
compressor.
3
Important Operating Instructions
GENERAL SAFETY INSTRUCTIONS
• Do not overreach. Proper footing and balance is a must at all times while using tools.
Unstable support may lead to personal injury. Do not stand on the tool. Serious injury
could result if the tool tips over or you accidentally contact the tool.
• Never leave the air compressor running unattended. Always turn the power to the OFF
position and do not leave the air compressor until it comes to a complete stop.
• When using air accessories, consult the owner’s manual provided by the manufacturer.
The use of improper accessories may cause risk of injury to yourself and others.
• Always make sure the tool is in the OFF position and unplugged from the electrical
receptacle when making adjustments, changing parts, or performing any maintenance.
• Secure work. When possible, the use of clamps or a holding device is much safer than
holding the work piece with your hands.
• Keep protective guards in place and in proper working condition.
• Maintain tools and equipment with care. they will function better and more safely when
kept clean and in good working condition. Keeping the air compressor clean, dry, and free
of grime will add to its life and performance.
• Childproof the workshop. The use of master switches and padlocks is highly
recommended. Remove starter keys where applicable.
Drain liquid from air tank daily
• Use the drain valve located on the bottom of the lower air tank to drain. Failure to
properly drain liquid from the tank will cause rust from moisture buildup, which weakens
the tank and could lead to a violent tank explosion. Periodically inspect the tanks for
unsafe conditions such as corrosion, cracked welds, and leaks.
• Release air slowly when draining moisture or depressurizing the air compressor. Fast
moving air will stir up dust, dirt, and debris, and may be harmful.
Risk of fire or explosion
• Avoid dangerous environments. Do not spray combustible/flammable liquid in a confined
area. Spray area must be well ventilated. Do not smoke while spraying or spray where
spark or flame is present. Arcing parts - keep compressor at least 20 ft. away from
spraying area and all explosive vapors. Do not use compressor near gasoline or other
flammable materials.
4
Important Operating Instructions
GENERAL SAFETY INSTRUCTIONS
• Operate the air compressor in a well-ventilated area. Do not direct paint or other spray
material towards the compressor. Read and follow all safety instructions for the material
you are spraying.
Risk of injury
• Do not direct air stream at body. Use eye protection. Compressor starts automatically.
Do not touch moving parts. Keep guards in place. Compressor does not supply
breathable air.
Risk of bursting
• Do not adjust regulator to result in output pressure greater than marked maximum
pressure of attachment. If a regulator has not been installed, use only attachment rated at
200 PSI or higher. Do not weld on or repair tank - A DAMAGED TANK MUST BE
REPLACED IMMEDIATELY. Do not operate without proper safety valve in place.
• Never attempt to repair or make modifications to the tank or its attachments. Welding,
drilling, or any other modifications may weaken the tank, which may result in damage
from rupture or explosion. Never remove or attempt to adjust the pressure switch, safety
valve, or other components that control tank pressure. Never substitute parts or attempt
to alter the factory set operating pressures.
Risk of burns
• Touching exposed metal such as the compressor head or exhaust tube can result in
serious burns. Keep hands and fingers away from exposed metal parts on air compressor
during or immediately after operation. Air compressors generate significant heat during normal
operation and will remain hot for some time after use. Do not reach around protective shrouds or
attempt any maintenance until compressor has been allowed to cool.
Risk of flying objects
• Do not direct compressed air stream at people or pets. The powerful compressed air stream can
damage exposed skin and easily propel loose dirt and other small objects at high-speed, resulting
in serious injury. Always wear eye protection that meets ANSI Z28.1 specifications. Use only
OSHA approved air blowguns. Never leave a pressurized air compressor unattended. Shut OFF
air compressor and relieve pressure before performing maintenance or repairs. Do not move the
air compressor while the air tank is pressurized. Never attempt to move the air compressor by
pulling on the air hose.
5
Important Operating Instructions
GENERAL SAFETY INSTRUCTIONS
Risk of falling
• Portable air compressors 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 air
compressor in a stable and secure position to prevent accidental movement of the unit. Never
operate air compressor on a roof or other elevated position. Use additional air hose to reach high
locations.
Air tools and accessories
• Do not exceed the pressure rating of any air tool, spray gun, air accessories, or inflatables.
Excess pressure can cause them to explode, resulting in serious injury. Follow the manufacturer’s
recommended pressure settings for all air tools and air accessories.
INSTALLATION & LOCATION
Caution: In order to avoid damaging the air compressor, do not allow the unit to be tilted from the
normal position when operating.
The compressor must be run with the rubber feet resting on a flat and stable horizontal surface.
The air compressor must be used in a clean and well-ventilated area.The compressor requires an
unobstructed airflow and must be located a minimum of 20 inches from any walls or other
obstructions that may prevent proper ventilation.
Caution: DO NOT place air compressor in an area:
• Where there is evidence of oil or gas leaks.
• Where flammable gas vapors or materials may be present
• Where temperatures fall below 32°F or exceed 104°F.
• Where extremely dirty air or water could be drawn into the air compressor.
WARNING: Serious injury or death may occur if electrical sparks from motor and pressure
switch come in contact with flammable vapors, combustible dust, gases, or other
combustible materials. When using the air compressor for spraying paint, place the air
compressor as far away from the work as possible, using extra lengths of air hose to
extend the working reach instead of extension cords.
6
Important Operating Instructions
GROUNDING INSTRUCTIONS
This product should 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 having a grounding
wire with an appropriate grounding plug. The plug must be
plugged into an outlet that is properly installed and
grounded in accordance with all local codes and
ordinances.
DANGER: Improper installation of the grounding plug can
result in a risk of electric shock. If repair or replacement of
the cord is necessary, do not connect the grounding wire to
either flat blade terminal. The wire with GREEN insulation
with or without yellow stripes is the grounding wire.
This product is for use on a nominal 120-volt circuit and has
a three-prong grounding plug that looks like the plug
illustrated in Figure 1. A temporary adapter similar to the
adapter illustrated in Figure 1-B may be used to connect
this plug to a 2-pole receptacle as shown in figure 1-B when
a properly grounded outlet is not available. The temporary
adapter shall be used only until a properly grounded outlet
(Figure 1-A) is installed by a qualified electrician. Tab for
grounding screw, lug, or similar part extending from the
adapter must be connected to a permanent ground such as
a properly grounded outlet box cover. Whenever the
adapter is used, it must be held in place by a metal screw.
The use of a GFCI outlet is strongly recommended. The
third prong is to be used to ground the tool and provide
protection against electrical shock. Never remove the third
prong.
Check with a qualified electrician or serviceman if the
grounding instructions are not completely understood, or if
in doubt as to whether the product is properly grounded. Do
not modify the plug provided. If it will not fit the outlet, have
the proper outlet installed by a qualified electrician.
7
Important Operating Instructions
EXTENSION CORDS
CAUTION: The use of an extension cord with this product is not recommended as this
can result in the loss of power to your air compressor which can prevent the motor from
starting or running properly. This can also cause your fuse to blow or circuit breaker to
trip. Running your air compressor on an undersized extension cord will cause permanent
damage to internal switches and overheating of the electric motor. Use an additional
length of air hose rather than an extension cord.
If you must use an extension cord, it should be plugged into a GFCI found in circuit boxes
or protected receptacles. Use only UL listed 3-wire extension cords that have a 3-blade
grounding plug and a 3-slot receptacle that will accept the plug on the product. Make sure
your extension cord is in good condition. When using an extension cord, be sure to use
one heavy enough to carry the current your product will draw. Refer to the guide for
minimum gauge required for extension cords.
Use only extension cords that are intended for outdoor use. These cords are identified by
a marking “ACCEPTIBLE FOR OUTDOOR APPLIANCES, STORE INDOORS WHEN
NOT IN USE.” Examine extension cord before use. DO NOT USE DAMAGED
EXTENSION CORDS. Do not pull on cord to disconnect from receptacle; always
disconnect by pulling on plug. Keep cord away from heat and sharp edges. Always shut
OFF the air compressor AUTO/ON pressure switch before unplugging the compressor.
Always disconnect the extension cord from the receptacle before disconnecting the
product from the extension cord.
WARNING: Avoid electrical shock hazard. Never use this compressor with a
damaged or frayed electrical cord or extension cord. Inspect all electrical cords
regularly. Never use in or near water or in any environment where electric shock is
possible. To reduce the risk of electrocution, keep all connections dry and off the
ground. Do not touch the plug with wet hands.
8
Important Operating Instructions
Guard against electrical shock. Avoid body contact with grounded services such as pipes,
ovens, stoves, and refrigerator enclosures. If not properly grounded, this air compressor
can incur the potential hazard of light trickle shock, particularly when used in damp
locations. If electrical shock occurs, there is the potential of secondary hazard such your
hands contacting an operating air tool.
DUTY CYCLE
DUTY CYCLE
This air compressor pump is capable of running continuously. However, in order to
prolong the life of your air compressor, it is recommended that a 50% average duty cycle
be maintained. Duty cycle refers to the percentage of time a compressor can safely run
within a given amount of time expressed as a ratio. Example: Oil lubricated compressors
are typically rate at a 50% duty cycle, meaning that the compressor motor can run about
50% of the total time it is being used to supply air to a tool. During the ON time, the motor
is running to pressurize the tank. During the OFF time, the motor is stopped and the tools
are running off on the pressurized air stored in the tank. If your air tools are draining
pressure off of the tank too quickly, the compressor motor must run more than 50% of the
time the compressor is in use. This can lead to overheating and will significantly shorten
the life of the compressors.
This compressor is designed for household use only and is not intended for commercial
applications. It is well suited for do-it-yourselfers with a variety of automotive and home
uses.
This instruction manual is intended for your benefit. Please read and follow the safety,
maintenance, and troubleshooting steps described within to ensure your safety and
satisfaction. The contents of this instruction manual are based upon the latest product
information available at the time of publication. The manufacturer reserves the right to
make product changes at any time without notice.
WARNING: Read and understand this entire instruction manual before attempting
to assemble, install, operate, or maintain this air compressor. Failure to comply
with the instructions may result in serious personal injury and/or property damage.
SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE.
9
Important Operating Instructions
WARNING: Do not operate this air compressor if damaged during shipment,
handling, or misuse. Damage may result in bursting, which can cause serious
injury or property damage. All damaged parts must be repaired or replaced as
needed prior to operating this air compressor.
Check to see that all nuts, bolts, and fittings are secure before putting this air compressor into
service. If you have any questions, or require assistance with damaged or missing parts, please
contact our customer service center.
READ ALL SAFETY WARNINGS BEFORE USING THIS AIR COMPRESSOR.
COMPRESSOR FEATURES
1. AUTOMATIC ON/OFF PRESSURE SWITCH: This compressor is equipped with an automatic
ON/OFF pressure switch. The compressor will only run when the switch is in ON/AUTO position.
Once the tank has reached the desired preset pressure (“cut-out” pressure), the pump motor will
automatically shut off. While the switch is in the ON/AUTO position, the pump motor will
automatically turn back on once the pressure in the tank drops below the minimum preset
pressure (“cut-in” pressure).
WARNING: Do not leave the compressor unattended while the power switch is in the
ON/AUTO position.
2. AIR TANK PRESSURE GAUGE: The tank pressure gauge provides a reading of the air
pressure inside of the compressor tank.
3. OUTLET PRESSURE GAUGE: The outlet pressure gauge provides a reading of the air
pressure at the outlet side of the regulator. This pressure is controlled by the pressure regulator
and is always less than or equal to the air tank pressure.
4. DUAL AIR COUPLERS: The air couplers are preinstalled into standard 1/4” NPT (F) threads
in the pressure manifold. Use PTFE thread-sealing tape on the threads to make sure you have an
airtight connection when replacing quick connect couplers.
5. PRESSURE REGULATOR: The regulator allows you to select the amount of air pressure that
is output through the air hose into tools and accessories. Turn the pressure regulator knob
clockwise to increase discharge pressure, and counter clockwise to decrease discharge pressure.
Please refer to the air delivery requirements of your tools for the proper pressure settings.
NOTICE: Be careful not to over tighten pressure regulator knob when it “bottoms out” as this may
damage pressure regulator.
10
Important Operating Instructions
6. SAFETY RELIEF VALVE: This compressor is equipped with a safety relief valve that is
designed to prevent system failures by relieving pressure from the system when the air pressure
reaches a predetermined level. The safety relief valve is preset by the manufacturer. DO NOT
attempt to modify or remove the safety relief valve.
7. AIR TANK DRAIN VALVE: Moisture is produced whenever air is compressed. It is critical to
drain water from the air tank on this compressor frequently. If unit is used only occasionally, tank
should be drained after each use and prior to the next use. To drain the tank, slowly open the tank
drain fitting by turning counterclockwise Once all moisture has drained out, close the fitting
securely. NOTE: Air tank will not pressurize while drain valve is open.
NOTE: A dirty air filter will reduce air compressor performance and can lead to product failure.
8. MANUAL THERMAL OVERLOAD SWITCH: The electric motor has a manual thermal overload
protector. If the motor overheats for any reason, the thermal overload protector will shut off the
motor. Turn pressure switch to the OFF position and wait for unit to cool before pushing the reset
button and restarting the compressor. NOTICE: This air compressor is designed for household
use only and is not intended to operate heavy-duty air tools. If your application’s demands exceed
the capacity of this air compressor, a larger air compressor that is matched to your application is
recommended. If the unit shuts down again, please call the customer service center for additional
assistance.
9. AIR INTAKE FILTER: This compressor is equipped with an externally accessible air intake
filter that is designed to clean air coming into the pump. The filter
element is easily removed for periodic cleaning. Use compressed air to blow loose dirt and debris
from the paper filter element and reinstall. Replace filter element when necessary.
10. HANDLE: Convenient handle for easy transport.
OPERATING
INITIAL SET-UP/BREAK-IN PROCEDURE:
Caution: Do not attach air hose, air tools, or other accessories to the air outlet until break-in
procedure has been successfully completed.
1. Read and understand the entire instruction manual, including all safety warnings before setting
up air compressor.
2. Place air compressor on a flat, level surface.
11
Important Operating Instructions
3. Turn the pressure regulator knobs fully clockwise to open airflow from air outlet port.
NOTE: Be careful not to over tighten pressure regulator knob when it “bottoms out” as this may
damage pressure regulator.
4. Turn the power switch to the OFF position.
5. Plug the power cord directly into a properly grounded power source of the correct voltage (see
Grounding instructions).
6. Open the tank drain valve to allow air to escape preventing air pressure buildup in the air tank.
7. Turn the compressor ON by moving the switch to the AUTO/ON position and run the air
compressor for a period of 20 minutes to break-in the air pump.
8. With the compressor still running, at the end of the 20-minute break-in period, close the tank
drain valve. The air compressor will build air pressure to the maximum preset pressure (“cut-out”
pressure) and automatically shut-off.
9. Slowly turn the tank drain valve to open airflow from drain and bleed off air from the air tank.
The air compressor will automatically restart once the pressure in the air tank drops below the
minimum preset pressure (“cut-in” pressure).
10. Turn the compressor off by moving the switch to the OFF position.
11. Release the pressure from the system. Drain moisture from the air tank by slowly opening the
air tank drain valve by turning counterclockwise. Tilt tank to remove all moisture. Once all the
moisture has drained out, close the fitting securely.
NOTE: Air tank will not pressurize while drain valve is open.
12. Disconnect the power cord from the power outlet.
NOTE: Make sure the power switch is in the OFF position when connecting or disconnecting
power cord from electrical outlet.
13. Your new air compressor is now ready to use.
12
Important Operating Instructions
MAINTENANCE
WARNING: Disconnect air compressor from the power source and bleed off all air pressure
before attempting any maintenance or repair.
SHUTDOWN & STORAGE
NOTE: NEVER stop the air compressor by unplugging it from the power outlet as this may result
in damage to the compressor.
1. Turn the switch to the OFF position.
2. Disconnect the power cord from the power outlet. Disconnect the power cord from the power
outlet by grabbing the plug (not the cord). Loop around electric cord holder for storage.
3. Turn the pressure regulator knob fully counterclockwise to close airflow from air outlet port.
Check the outlet pressure gauge to ensure that it reads 0 PSI.
4. Remove the air hose and any air accessories.
5. Drain moisture from the air tank by slowly opening the air tank drain valve by turning
counterclockwise. Tilt tank to remove all moisture. Once all the moisture has drained out, close
the fitting securely.
6. Allow the compressor to cool down.
7. Wipe the air compressor clean and store it in a clean, dry, and non-freezing location.
WHEN PERFORMING ANY MAINTENANCE OR SERVICE:
1. The air compressor must be turned off.
2. Disconnect compressor from the power source.
3. Open tank drain to bleed off all air pressure before attempting any maintenance or
repair.
4. Allow compressor to fully cool before attempting any maintenance or repair. Check the
air compressor frequently for any visible problems and follow maintenance procedures
each time the compressor is used.
13
Important Operating Instructions
MAINTENANCE CHECKLIST
Daily:
• Drain accumulated liquid from tank
• Check for unusual noise and/or vibrations
• Check that all fasteners are secure
• Wipe compressor clean
Weekly:
• Inspect and clean air filter
Monthly:
• Check for air leaks
• Check safety relief valve
CHECKING SAFETY RELIEF VALVE
WARNING: Safety relief valve must be replaced if it cannot be actuated or it leaks air after
the ring is released.
1. The air compressor must be turned OFF.
2. Disconnect compressor from the power source.
3. Open tank drain to bleed off all air pressure before attempting any maintenance or repair.
4. Allow compressor to fully cool before attempting any maintenance or repair.
5. Grasp the wire ring on the safety relief valve.
6. Pull and release the ring a few times to ensure that the plunger moves in and out. Replace the
safety relief valve if plunger does not move or is difficult to move.
14
Important Operating Instructions
CHECKING AIR FILTER ELEMENT
1. The air compressor must be turned OFF.
2. Disconnect compressor from the power source.
3. Open tank drain to bleed off all air pressure before attempting any maintenance or repair.
4. Allow compressor to fully cool before attempting any maintenance or repair.
5. Remove the face of the filter body to access the filter element by removing screw holding filter
in place.
6. Use compressed air to blow loose dirt and debris from the paper filter element. Replace filter
element if it cannot be cleaned sufficiently.
7. Reinsert filter element into filter body and reinstall filter faceplate.
MOISTURE IN COMPRESSED AIR
Moisture is a normal by-product of compressing air. As the moisture builds during compressor
use, it can be carried through the air hose. When using paint spray gun or sandblasting gun, the
use of a special filter to remove moisture from the air line is highly recommended. Moisture in the
compressed air will cause water spots in paint jobs and cause blasting media to clog the
sandblasting gun.
15
Important Operating Instructions
TROUBLESHOOTING GUIDE
Symptom
Possible Cause(s)
Corrective Action
Power cord not plugged in
Plug cord into grounded outlet
Motor/Pressure switch in OFF position
Move switch to AUTO position
Motor thermal overload switch has
tripped
Turn air compressor off, wait until
the motor is cool, then press motor
thermal overload (red) button firmly
until click is heard.
Replace fuse or reset circuit breaker
Check for proper fuse amperage
Fuse blown or circuit breaker has
tripped
Check for low voltage conditions
Disconnect any other electrical
appliances from circuit or operate air
compressor on its own branch
The compressor
does not start or
restart
Wrong gauge wire or length of
extension cord
Check chart in instruction manual for
proper gauge wire and cord length.
Air tank pressure exceeds
motor/pressure switch “cut-in”
pressure
Motor will start automatically when
air tank pressure drops below “cutin” pressure of motor/pressure
switch
Pressure release valve on
motor/pressure switch has not
unloaded pump head pressure
Bleed the line by moving the switch
to the OFF position
Defective motor, motor capacitor,
motor/pressure switch
Contact customer service
16
Important Operating Instructions
TROUBLESHOOTING GUIDE
Symptom
When in the
start/stop option,
motor runs
continuously
Air continues to leak
at motor/pressure
switch release valve
after motor stops
Air continues to leak
at motor/pressure
switch release valve
while motor is
running
Air leaks from
safety relief valve
Possible Cause(s)
Corrective Action
Motor/pressure switch does not shut
off motor when air compressor
reaches “cut-out” pressure and safety
relief valve activates
Move the motor/pressure switch to
the OFF position. If the motor does
not shut off, unplug the air
compressor. If the electrical
contacts are welded together,
replace the pressure switch.
Air Leaks
Check all hose & coupler fittings for
leaks with soapy water. Detach
leaky fittings and apply new Teflon
tape. If air hose is punctured,
replace.
Air compressor is incorrectly sized
Limit the air pressure to the capacity
of the air compressor. Either use a
smaller tool or a larger air
compressor.
Defective pilot valve, the check valve
is stuck open
Remove, clean, or replace
Defective motor/pressure switch
Replace
Check valve stuck in open position
Replace check valve
DANGER - Do not disassemble the
check valve with tank pressurized.
Open tank petcock valve to allow air
to escape from tank prior to
servicing.
Possible defective safety relief valve
Operate safety relief valve manually
by pulling on ring. If it still leaks, it
should be replaced.
Excessive tank pressure
Defective motor/pressure switch.
Replace.
17
Important Operating Instructions
TROUBLESHOOTING GUIDE
Symptom
Possible Cause(s)
Corrective Action
Air leaks at fittings
Fittings are not tight enough
Tighten fittings where air can be
heard escaping. Check fittings with
soapy water solution. DO NOT
OVERTIGHTEN.
Air leaks in air tank
Defective or rusted air tank
Air tank must be replaced. DO NOT
ATTEMPT TO REPAIR AIR TANK!
Air blowing from
inlet filter
Damaged inlet (reed) valve
Contact customer service
Pressure regulator knob is not turned
to high enough pressure
Adjust pressure regulator knob to
proper setting
Defective motor/pressure regulator
switch
Replace
Restricted air intake filter
Clean or replace the filter element
Air leaks
Check for leaks by applying soap
solution to all fittings and
connections. Bubbles will appear at
leakage points. Tighten or replace
leaking fittings or connections as
needed.
Hose or hose connections are too
small or long
Replace with larger hose or
connectors
Air compressor is not large enough
for air requirement
Check the accessory air
requirement. If it is higher than the
CFM or pressure supply of the air
compressor, you need a larger air
compressor.
Condensation in air tank caused by
high level of atmospheric humidity or
air compressor is not running long
enough
Drain tank after every use. Drain air
tank more often in humid weather
and use an air line filter/
Insufficient pressure
at air tool or air
accessory
Moisture in
discharge air
18
Important Operating Instructions
WARRANTY
Limited Manufacturer Warranty
North American Tool Industries (NATI) makes every effort to ensure that this product
meets high quality and durability standards. NATI warrants to the original retail consumer
a 1-year limited warranty from the date the product was purchased at retail and each
product is free from defects in materials. Warranty does not apply to defects due directly
or indirectly to misuse, abuse, negligence or accidents, repairs or alterations, or a lack of
maintenance. This product is intended for personal use. The warranty will be voided if
used in commercial, rental, or industrial applications. NATI shall in no event be liable for
death, injuries to persons or property, or for incidental, special or consequential damages
arising from the use of our products. To receive service under warranty, the original
manufacturer part must be returned for examination by an authorized service center.
Shipping and handling charges may apply. If a defect is found, NATI will either repair or
replace the product at its discretion.
DO NOT RETURN TO STORE
For Customer Service:
Email [email protected] or
Call 1-800-348-5004
19
PARTS LIST
20 Gallon Air Compressor
Model: 52401
20
88052401
01/2014
PARTS LIST
20 Gallon Air Compressor
Model: 52401
21
88052401
01/2014
PARTS LIST
Model: 52401
20 Gallon Air Compressor
#
Description
QTY
#
Description
QTY
#
Description
QTY
1
Release Pipe
1
28
Discharge Pipe
1
55
Spring Washer
4
2
Power Cord
1
29
Elbow
1
56
Bolt, M6
4
3
Pressure Switch
1
30
Spring Washer
1
57
Cylinder Gasket
1
4
Pressure Gauge
2
31
Bolt
1
58
Valve Plate
2
5
Nut
3
32
Washer
1
59
Reed Valve
2
6
Ring
1
33
Shroud Bottom
1
60
Filter
1
7
Quick Coupler
2
34
Circuit Breaker
1
61
Plastic Plate
1
8
Regulator
1
35
Bolt
1
62
Valve Gasket
1
9
Plug
1
36
Spring Washer
1
63
Bolt, M6
4
10
Safety Valve
1
37
Washer
1
64
Spring Washer
4
11
Check Valve
1
38
Fan
1
65
Washer
4
12
Feet Pad
2
39
Bearing
1
66
Cylinder Head
1
13
Washer
2
40
Connect-Rod
1
67
1
14
Bolt, M5
2
41
Spring Washer
1
Cylinder Head
Gasket
15
Drain Valve
1
42
Bolt, M5
1
68
Shroud Top
1
16
Nut
2
43
Crank Shaft
1
69
Bolt, M6
1
17
Washer
2
44
Crankcase
1
70
Piston Cover
1
18
Wheel
2
45
Cylinder
1
71
Piston Ring
1
19
Axle
1
46
Nut
1
72
Guide Ring
1
20
Axle
1
47
Dentiform Washer
1
73
Bolt
1
21
Tank
1
48
Stator
1
22
Bolt
4
49
Capacitor
2
23
Handle Grip
1
50
Bolt, M4
1
24
Handle
1
51
Dentiform Washer
1
25
Pump
1
52
Bearing
2
26
Bolt
4
53
Rotor
1
27
Connector
1
54
End Cover
1
22
88052401
01/2014
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