Page 1
CENTRALPNEUMATIC
29 GALLOLN BELT' DLiEIVEN
AIR CLMPRESSLR
SET UP AND OPERATING INSTRUCTIONS
Visit our website at: http://www.harborfreight.com
Read this material before using this product.
Failure to do so can result in serious injury.
A
For technical questions or replacement parts, please call 1-800-444-3353.
SAVE THIS MANUAL.
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hTOp
IMPORTANT
DO NOT RETURN TO STOR
This unit was fully tested and inspected prior to shipment and will operate properly when instructions are followed. Refer to your owner's manual for basic
troubleshooting.
To avoid unnecessary return to the store, simply call Compressor Support toll free for additional assistance.
Compressor Support:
Please have your model number and serial number available. These can be found on the data label on your product. Retain a copy of your receipt with purchase
date for reference.
Air Compressor will automatically shut off when maximum PSI is reached. When the tank pressure drops to the cut in pressure (low pressure) and the on/off switch
is in the ON position, the unit will automatically restart.
On occasion, maximum pressure in tank will remain until next use thus resulting in a sense of no power (See bullet above).
To avoid power loss, overheating and ensure power, use additional air hose rather than extension cords.
It is the consumer's responsibility to drain oil lubed units prior to shipment to meet ICC, state and local fire regulations.
1-800-444-3353
TABLE OF CONTENTS
Introduction.......................................................................................................................................................................................................2
General Safety Rules....................................................................................................................................................................................3-4
Specific Safety Rules........................................................................................................................................................................................5
Symbols.........................................................................................................................................................................................................6-7
Electrical...........................................................................................................................................................................................................8
Glossary of Terms............................................................................................................................................................................................9
Tools Needed...................................................................................................................................................................................................9
Features...................................................................................................................................................................................................10-11
Assembly...................................................................................................................................................................................................11-13
Operation...................................................................................................................................................................................................14-15
Maintenance..............................................................................................................................................................................................16-18
T roubleshooting........................................................................................................................................................................................19-20
Warranty.........................................................................................................................................................................................................22
INTRODUCTION
This tool has many features for making its use more pleasant and enjoyable. Safety, performance, and dependability
have been given top priority in the design of this product making it easy to mantain and operate.
dk DANGER
This compressor/pump is not equipped and shouid not be used to suppiy breathing quaiity air. Additionai equip
ment wouid be necessary to properiy fiiter and purify the air to meet minimai specifications for Grade D breathing
as described in Compressed Gas Association Commodity Specification G 7.1 - 1966, OSHA 29 CFR 1910.134.
Compressed Gas Association, 4221 Wainey Road, Fifth Fioor, Chantiiiy, VA 20151-2923, (703) 788-2700,
www.cganet.com. Any such additionai equipment has not been examined and no impiication of proper use for breath
ing air is intended or impiied.
If this comfjr^^^or i^ ^lt^r^d in ^nyr w^yr, ^xi^ting w^rr^nties sh^ll t>e \/oided. Harbor Freir^hit Tools discl^ii^^ any
lialbilitie^ yyrh^t^oever fc^r anyr los>s, personal injury, or damage.
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GENERAL SAFETY RULES
Jk WARNING:
Read and understand all instructions. Failure to fol
low all instructions listed below may result in electric
shock, fire, and/or serious personal injury.
SAVE THESE INSTRUCTIONS WORK AREA
■ Keep your work area clean and well lit. Cluttered
benches and dark areas invite accidents. Floor must
not be slippery from wax or dust.
■ Do not operate power tools in explosive atmo
spheres, such as in the presence of flammable liq
uids, gases, or dust. Power tools create sparks which
may ignite the dust or fumes.
■ Keep bystanders, children, and visitors away while
operating tools. Distractions can cause you to lose
control.
■ Operate air compressor in an open area at least
18 in. away from any wall or object that could re
strict the flow of fresh air to ventilation openings.
ELECTRICAL SAFETY
■ Avoid body contact with grounded surfaces such as
pipes, radiators, ranges, and refrigerators. There is an
increased risk of electric shock if your body is grounded.
■ Don’t expose power tools to rain or wet conditions.
Water entering a power tool will increase the risk of
electric shock.
■ Do not abuse the cord. Never use the cord to carry
the tool or pull the plug from an outlet. Keep cord
away from heat, oil, sharp edges, or moving parts.
Replace damaged cords immediately. Damaged
cords increase the risk of electric shock.
■ When operating a power tool outside, use an outdoor
extension cord marked “W-A” or “W”. These cords
are rated for outdoor use and reduce the risk of electric
shock.
PERSONAL SAFETY
■ Eye protection which conforms to ANSI specifica
tions and provides protection against flying particles
both from the FRONT and SIDE should ALWAYS be
worn by the operator and others in the work area
when loading, operating, or servicing this tool. Eye
protection is required to guard against flying fasteners
and debris, which could cause severe eye injury.
■ The employer and/or user must ensure that proper
eye protection is worn. We recommend a Wide Vision
Safety Mask for use over eyeglasses or standard safety
glasses that provide protection against flying particles
both from the front and side. Always use eye protection
which is marked to comply with ANSI Z87.1.
■ Additional safety protection will be required in some
environments. For example, the working area may
include exposure to a noise level which can lead to
hearing damage. The employer and user must ensure
that any necessary hearing protection is provided and
used by the operator and others in the work area.
Some environments will require the use of head protec
tion equipment. When required, the employer and user
must ensure that head protection marked to comply
with ANSI Z89.1 is used.
■ Stay alert, watch what you are doing, and use com
mon sense when operating a power tool. Do not
use tool while tired or under the influence of drugs,
alcohol, or medication. A moment of inattention while
operating power tools may result in serious personal
injury.
■ Dress properly. Do not wear loose clothing or
jewelry. Contain long hair. Keep your hair, clothing,
and gloves away from moving parts. Loose clothes,
jewelry, or long hair can be caught in moving parts.
■ Do not overreach. Keep proper footing and balance
at all times. Proper footing and balance enables better
control of the tool in unexpected situations.
■ Use safety equipment. Always wear eye protection.
Dust mask, nonskid safety shoes, hard hat, or hearing
protection must be used for appropriate conditions.
■ Do not use on a ladder or unstable support. Stable
footing on a solid surface enables better control of the
tool in unexpected situations.
TOOL USE AND CARE
■ Do not exceed the pressure rating of any compo
nent in the system.
■ Protect material lines and air lines from damage or
puncture. Keep hose and power cord away from sharp
objects, chemical spills, oil, solvents, and wet floors.
■ Check hoses for weak or worn condition before
each use, making certain all connections are se
cure. Do not use if defect is found. Purchase a new
hose or notify an authorized service center for exami
nation or repair.
■ Release all pressures within the system slowly. Dust
and debris may be harmful.
■ Store idle tools out of the reach of children and
other untrained persons. Tools are dangerous in the
hands of untrained users.
■ Maintain tools with care. Follow maintenance instruc
tions. Properly maintained tools are easier to control.
■ Check for misalignment or binding of moving parts,
breakage of parts, and any other condition that
may affect the tool’s operation. If damaged, have
the tool serviced before using. Many accidents are
caused by poorly maintained tools.
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GENERAL SAFETY RULES
■ Never point any tool toward yourself or others.
■ Keep the exterior of the air compressor dry, clean,
and free from oil and grease. Always use a clean
cloth when cleaning. Never use brake fluids, gasoline,
petroleum-based products, or any strong solvents to
clean the unit. Following this rule will reduce the risk of
deterioration of the enclosure plastic.
SERVICE
■ Tool service must be performed only by qualified
repair personnel. Service or maintenance performed
by unqualified personnel may result in a risk of injury.
Disconnect power supply, open drain valve to
decompress tank and allow water to drain, and
allow air compressor to become cool to the touch
before servicing. Turn pressure regulator knob fully
counter clockwise after shutting off compressor.
When servicing a tool, use only identical
replacement parts. Follow instructions in the
Maintenance section of this manual. Use of
unauthorized parts or failure to follow Maintenance
instructions may create a risk of injury.
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SPECIFIC SAFETY RULES
Know your power tool. Read operator’s manual
carefully. Learn its applications and limitations, as well
as the specific potential hazards related to this tool.
Following this rule will reduce the risk of electric shock,
fire, or serious injury.
Drain tank of moisture after each day’s use.
If unit will not be used for a while, it is best to leave
drain valve open until such time as it is to be used. This
will allow moisture to completely drain out and help
prevent corrosion on the inside of tank.
Risk of Fire or Explosion. Do not spray flammable liq
uid in a confined area. Spray area must be well ventilat
ed. Do not smoke while spraying or spray where spark
or flame is present. Keep compressors as far from the
spraying area as possible, at least 15 feet from the
spraying area and all explosive vapors.
Risk of Bursting. Do not adjust regulator to result in
output pressure greater than marked maximum presisure
of ¡attachment. Do not us^ at pressure (gri^atgr thtin th^
r^te d maximum pressure of this compressor.
If connected to a circuit protected by fuses,, use time
delay fuses with this product.
To reduce the risk of electric shock, do not expose to
rain. Store indoors.
Inspect tank yearly for rust, pin holes, or other im
perfections that could cause it to become unsafe.
Never weld or drill holes in the air tank.
Make sure the hose is free of obstructions or snags.
Entangled or snarled hoses can cause loss of balance
or footing and may become damaged.
Use the air compressor only for its intended use. Do
not alter or modify the unit from the original design
or function.
Always be aware that misuse and improper handling
of this tool can cause injury to yourself and others.
Never leave a tool unattended with the air hose at
tached.
Do not operate this tool if it does not contain a leg
ible warning label.
Do not continue to use a tool or hose that leaks air
or does not function properly.
Always disconnect the air supply and power supply
before making adjustments, servicing a tool, or when a
tool is not in use.
Do not attempt to pull or carry the air compressor
by the hose.
Your tool may require more air consumption than
this air compressor is capable of providing.
Never use the compressor without guards (belt
guard) and never touch moving parts.
Always follow all safety rules recommended by
the manufacturer of your air tool, in addition to all
safety rules for the air compressor. Following this
rule will reduce the risk of serious personal injury.
Never direct a jet of compressed air toward people
or animals. Take care not to blow dust and dirt
towards yourself or others. Following this rule will
reduce the risk of serious injury.
Protect your lungs. Wear a face or dust mask if the
operation is dusty. Following this rule will reduce the
risk of serious personal injury.
Do not use this air compressor to spray chemicals.
Your lungs can be damaged by inhaling toxic fumes. A
respirator may be necessary in dusty environments or
when spraying paint. Do not carry while painting.
Inspect tool cords and hoses periodically and, if
damaged, have repaired at your nearest Authorized
Service Center. Constantly stay aware of cord loca
tion. Following this rule will reduce the risk of electric
shock or fire.
Never use an electrical adaptor with this grounded
plug.
Check damaged parts. Before further use of the air
compressor or air tool, a guard or other part that
is damaged should be carefully checked to deter
mine that it will operate properly and perform its
intended function. Check for alignment of moving
parts, binding of moving parts, breakage of parts,
mounting, and any other conditions that may affect
its operation. A guard or other part that is damaged
should be properly repaired or replaced by an au
thorized service center. Following this rule will reduce
the risk of shock, fire, or serious injury.
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. A wire gauge size (A.W.G.) of at least 14 is
recommended for an extension cord 50 feet or less
in length. A cord exceeding 100 feet is not recom
mended. If in doubt, use the next heavier gauge.
The smaller the gauge number, the heavier the
cord. An undersized cord will cause a drop in line volt
age resulting in loss of power and overheating.
Save these instructions. Refer to them frequently and
use them to instruct others who may use this air com
pressor. If you loan someone this tool, loan them these
instructions also.
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SYMBOLS
Some of the following symbols may be used on this tool. Please study them and learn their meaning. Proper interpre
tation of these symbols will allow you to operate the tool better and safer.
SYMBOL NAME DESIO NATION/EXPLANATION
V Volts Voltage
Amperes Current
Hz Hertz Frequency (cycles per second)
A
Ml
é
Alternating Current
Class II Construction Double-insulated construction
Wet Conditions Alert
Read The Operator’s Manual
Eye Protection
Safety Alert
Risk of Bursting
Risk of Fire or Explosion
Type of current
Do not expose to rain or use in damp locations.
To reduce the risk of injury, user must read and understand
operator’s manual before using this product.
Always wear safety goggles, safety glasses with side shields, or
a full face shield when operating this product.
Precautions that involve your safety.
Do not adjust regulator to result in output pressure greater than
marked maximum pressure of attachment. Do not use at pressure
greater than the rated maximum pressure of this compressor.
Do not spray 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. Keep compressors as far from
the spraying area as possible, at least 15 feet from the spraying
area and ail explosive vapors.
o
Risk of Electrical Shock
Hot Surface
Risk to hearing
Risk to Breathing
Hazardous Voltage: Disconnect from power source before ser
vicing. Compressor must be grounded.
To reduce the risk of injury or damage, avoid contact with any
hot surface.
Always wear ear protection when using this tool. Failure to do
so may result in hearing loss.
Air obtained directly from the air compressor should never be
used to supply air for human consumption.
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SYMBOLS
The foiiowing signai words and meanings are intended to expiain the ieveis of risk associated with this product.
SYMBOL SIGNAL
A
A
A
SERVICE
Servicing requires extreme care and knowiedge and
shouid be performed oniy by a quaiified service tech
nician. For service we suggest you return the product to
the nearest AUTHORIZED SERVICE CENTER for repair.
When servicing, use oniy identicai repiacement parts.
DANGER:
WARNING:
CAUTION:
CAUTION:
MEANING
Indicates an imminentiy hazardous situation, which, if not avoided, wiii
resuit in death or serious injury.
Indicates a potentiaiiy hazardous situation, which, if not avoided, couid
resuit in death or serious injury.
Indicates a potentiaiiy hazardous situation, which, if not avoided, may
resuit in minor or moderate injury.
(Without Safety Aiert Symboi) Indicates a situation that may resuit in
property damage.
¿k WARNING:
To avoid serious personai injury, do not attempt to use
this product untii you read thoroughiy and understand
compieteiy the operator’s manuai. Save this operator’s
manuai and review frequentiy for continuing safe oper
ation and instructing others who may use this product.
WARNING:
The operation of any power tooi can resuit in foreign objects being thrown into your eyes, which can re
suit in severe eye damage. Before beginning power tooi operation, aiways wear safety goggies, safety
giasses with side shieids, or a fuii face shieid when needed. We recommend Wide Vision Safety Mask
for use over eyegiasses or standard safety giasses with side shieids. Aiways use eye protection which
is marked to compiy with ANSI Z87.1.
SAVE THESE INSTRUCTIONS
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ELECTRICAL
EXTENSION CORDS
Use only 3-wire extension cords that have 3-prong
grounding plugs and 3-pole receptacles that accept the
air compressor’s plug. When using the air compressor at
a considerable distance from the power source, use an
extension cord heavy enough to carry the current that the
compressor will draw. An undersized extension cord will
cause a drop in line voltage, resulting in a loss of power
and causing the motor to overheat. Use the chart pro
vided below to determine the minimum wire size required
in an extension cord. Only round jacketed cords listed by
Underwriter’s Laboratories (UL) should be used.
"Ampere rating (on air compressor data plate)
0-2.0 2.1-3.4 3.5-5.0 5.1-7.0 7.1-12.0 12.1-16.0
Cord Length Wire Size (A.W.G.)
25' 16 16 16 16
50' 16 16 16
100' 16
"Used on 12 gauge - 20 amp circuit.
NOTE; AWG = American Wire Gauge
When working with the air compressor outdoors, use an
extension cord that is designed for outside use. This is
indicated by the letters “WA” on the cord’s jacket.
Before using an extension cord, inspect it for loose or
exposed wires and cut or worn insulation.
16 14
14 14 12
12 10 -
14 14
¿k WARNING:
Keep the extension cord clear of the working area.
Position the cord so that it will not get caught on lumber,
tools, or other obstructions while you are working with
a power tool. Failure to do so can result in serious per
sonal injury.
Mk WARNING:
Check extension cords before each use. If damaged,
replace immediately. Never use air compressor with a
damaged cord since touching the damaged area could
cause electrical shock resulting in serious injury.
SPEED AND WIRING
The no-load speed of the electric motor varies by model and
specification. The motor speed is not constant and decreases
under a load or with lower voltage. For voltage, the wiring
in a shop is as important as the motor’s horsepower rating.
A line intended only for lights cannot properly carry a power
tool motor. Wire that is heavy enough for a short distance will
be too light for a greater distance. A line that can support one
power tool may not be able to support two or three tools.
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
air compressor is equipped with an electric cord having an
equipment-grounding conductor and a grounding plug. The
plug must be plugged into a matching outlet that is properly
installed and grounded in accordance with all local codes and
ordinances.
Do not modify the plug provided. If it will not fit the outlet,
have the proper outlet installed by a qualified electrician.
WARNING:
Improper connection of the equipment-grounding
conductor can result in a risk of electric shock.
The conductor with insulation having an outer surface that
is green with or without yellow stripes is the equipment
grounding conductor. If repair or replacement of the electric
cord or plug is necessary, do not connect the equipment
grounding conductor to a live terminal.
Check with a qualified electrician or service personnel if the
grounding instructions are not completely understood, or if in
doubt as to whether the tool is properly grounded.
Repiiir or replace ^ d^mi^g^d or v\/orn cord ^nnm^diately.
This product is for use on a nominal 120-V circuit and has
a grounding plug similar to the plug illustrated in Figure 1.
Only connect the product to an outlet having the same con
figuration as the plug. Do not use an adapter with this product.
Never use an electrical adaptor with this grounded plug.
NOTE: Use longer air hoses instead of long extension
cords. Your air compressor will run better and last longer.
ELECTRICAL CONNECTION
This air compressor is powered by a precision built
electric motor. It should be connected to a power sup
ply that is 120 volts, 60 Hz, AC only (normal household
current). Do not operate this tool on direct current (DC).
A substantial voltage drop will cause a loss of power and
the motor will overheat. If the air compressor does not
operate when plugged into an outlet, double check the
power supply.
PIN
8
12DV GROUNDED OUTLET
Fig. 1
Page 9
GLOSSARY OF TERMS
Air Filter
Porous element contained within a metal or plastic hous
ing attached to the compressor cylinder head which
removes impurity from the intake air ofthe compressor.
Air Tank
Cylindrical component which contains the compressed air.
Check Valve
Device that prevents compressed air from flowing back
from the air tank to the compressor pump.
Cut-In Pressure
The low pressure at which the motor will automatically
restart.
Cut-Off Pressure
The high pressure at which the motor will automatically
shut off.
Electric Motor
Device which provides the rotational force necessary to
operate the compressor pump.
Manual On/Off Switch
Control which turns the air compressor on or off. The
pressure switch will not automatically start and control the
compressor unless the manual On/Off Switch is in the ON
(I) position.
NPT (National Pipe Thread)
National Pipe Thread is a U.S. standard for tapered (NPT)
or straight (NPS) threads used to join pipes and fittings.
A thread sealing tape must be used to provide a leak-free
seal on pipe threaded connections.
Pressure Regulator Knob
Regulates the outgoing pressure from the air outlet to the
tool. It is possible to increase or decrease the pressure at
the outlet by adjusting this control knob.
Pressure Switch
Automatically controls the on/off cycling of the compres
sor. It stops the compressor when the cut-off pressure in
the tank is reached and starts the compressor when the
air pressure drops below the cut-in pressure.
PSI (Pounds Per Square Inch)
Measurement of the pressure exerted by the force of the
air. The actual psi is measured by a pressure gauge on the
compressor.
Pump
Produces the compressed air with a reciprocating piston
contained within the cylinder.
Regulator Pressure Gauge
Displays the current line pressure. Line pressure is adjust
ed by rotating the pressure regulator knob.
Safety Valve
Prevents air pressure in the air tank from rising over a
predetermined limit.
SCFM (Standard Cubic Feet Per Minute)
A unit of measure of air delivery.
Tank Pressure Gauge
Indicates the pressure in the air tank.
Thermal Overload Switch
Automatically shuts off the compressor if the temperature
of the electric motor exceeds a predetermined limit.
TOOLS NEEDED
The following tools are needed in order to assemble the wheel kit.
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FEATURES
PRODUCT SPECIFICATIONS
Running Horsepower
Air Tank Capacity
Air Pressure
Air Delivery
......................................................................5.9 SCFM @ 90 PSI
................................................................
...................................................
.................................................................
...................................................................
150 PSI max. Input
7.3 SCFM @ 40 PSI Net Weight.
29 gal. Gauges
2 HP Lubrication .
...................
.........................
......................................................
.............................. 1.5 in. diameter
120 V, 60 Hz, AC only, 15 Amps
.........................................
177.7 lbs.
Oil
OIL FILL
PLUG
SAFETY GUARD
.FOR THE V-BELT
ELECTRIC
MOTOR
ELECTRICAL
CABLE
HANDLE
Fig. 2
TANK
RUBBER
FOOT
WHEEL
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FEATURES
KNOW YOUR AIR COMPRESSOR
See Figure 2.
Before attempting to use this product, familiarize yourself
with all operating features and safety rules.
DESCRIPTION
Your air compressor is aircooled, oil lubricated, belt-driven,
single stage.
ASSEMBLY
PRESSURE REGULATOR KNOB
Use the pressure regulator knob to adjust the amount of
air being delivered through the hose.
REGULATOR PRESSURE GAUGE
The current line pressure is displayed on the regulator
pressure gauge. This pressure can be adjusted by rotating
the pressure regulator knob.
SAFETY VALVE
The safety valve is designed to automatically release air if
the air receiver pressure exceeds the preset maximum.
CHECK VALVE
Check valves are designed to allow air to flow freely in one
direction only.
TANK PRESSURE GAUGE
The tank pressure gauge indicates the pressure of the air
in the tank.
UNPACKING
This product has been shipped completely assembled,
except the two rubber feet and the two wheels.
■ Carefully remove the compressor from the box. Make
sure that all items listed in the packing list are included.
■ Inspect the compressor carefully to make sure no
breakage or damage occurred during shipping.
■ Do not discard the packing material until you have
carefully inspected and satisfactorily operated the tool.
■ If any parts are damaged or missing, please call
1-800-444-3353 for assistance.
Ak WARNING:
If any parts are missing do not operate the compressor
or air tools until the missing parts are replaced. Failure
to do so could result in possible serious personal injury.
Mk WARNING:
Do not attempt to modify this tool or create accessories
not recommended for use with this tool. Any such
alteration or modification is misuse and could result
in a hazardous condition leading to possible serious
personal injury.
PACKING LIST
Air Compressor (1)
Operator’s Manual (1)
Replacement Parts List (1)
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Page 12
ASSEMBLING THE RUBBER FOOT AND
WHEELS
See Figure 3.
■ Mount the rubber feet as shown in figure.
Tighten firmly with an open-end wrench (not included)
to secure it in position.
■ Mount the wheels as shown in figure.
Tighten firmly with an open-end wrench (not included)
to secure the wheels in position.
ASSEMBLY
NUT
S=WASHER(s)
RUBBER
©^FOOT
I—WASHER
li—SCREW
ASSEMBLING THE HANDLE
See Figures 4 - 5.
■ Lower the handle onto the compressor body, as shown
in Figure 4.
■ Line the holes of the handle with the ones on the slots
of the compressor. Then insert the two knobs and
tighten firmly to secure the handle in position (Fig. 5).
HOLE OF
THE ANDLE
WHEEL
SCREW
Fig. 3
HANDLE
Fig. 4
12
KNOB
Fig. 5
Page 13
ASSEMBLY
BREAKING IN THE PUMP
See Figures 6 - 9.
■ Check and tighten all bolts, fittings, etc.
■ Turn the pressure regulator knob fully clockwise to
open the air flow.
■ Place the lever of the pressure switch in ‘OFF’ position
and plug in the power cord.
■ Open the drain valve completely.
■ Place the lever of the pressure switch in ‘AUTO’
position and run the air compressor for 10 minutes to
break in pump parts.
■ Place the lever of the pressure switch in ‘OFF’ position.
■ Close the drain valve.
SAFETY
VALVE
PRESSURE
LEVER
IN ‘OFF’
POSITION
PRESSURE SWITCH
(ON/OFF)
TANK
GAUGE
REGULATOR
PRESSURE
GAUGE
PRESSURE
REGULATOR KNOB
QUICK
COUPLER
Fig. 6
LEVER
IN ‘AUTO’
POSITION
Fig. 7
Fig. 8
13
DRAIN VALVE
Fig. 9
Page 14
OPERATION
dk WARNING:
Do not allow familiarity with tools to make you careless.
Remember that a careless fraction of a second is
sufficient to inflict serious injury.
Mk WARNING:
Always wear safety goggles or safety glasses with
side shields when operating power tools. Failure to do
so could result in objects being thrown into your eyes
resulting in possible serious injury.
CAUTION:
Do not use in an environment that is dusty or otherwise
contaminated. Using the air compressor in this type of
environment may cause damage to the unit.
APPLICATIONS
Air compressors are utilized in a variety of air system
applications. Match hoses, connectors, air tools, and
accessories to the capabilities of the air compressor.
You may use this tool for purposes listed below:
■ Operating some air-powered tools.
■ Inflating tires, air beds, sports equipment, etc.
¿k WARNING:
Your tool may require more air consumption than this
air compressor is capable of providing. Check the tool
manual to avoid damage to the tool or risk of personal
injury.
Following all safety precautions in this manual and the
manufacturer’s instructions in the air tool manual, you
may now proceed to use your air-powered tool.
If using an inflation accessory, control the amount of air
flow with the pressure regulator knob. Turning the knob
fully counterclockwise will completely stop the flow of
air.
NOTE: Always use the minimum amount of pressure
necessary for your application. Using a higher pressure
than needed will drain air from the tank more rapidly
and cause the unit to cycle on more frequently.
When finished, always drain the tank and unplug the
unit. Never leave the unit plugged in and/or running
unattended.
USING THE AIR COMPRESSOR
See Figures 6 - 8.
■ Ensure tank drain is closed.
■ Ensure lever of the pressure switch is in the ‘OFF’
position and air compressor is unplugged.
■ Connect the air line to the quick coupler.
¿k WARNING:
Always ensure the lever of the pressure switch is in the
‘OFF’ position and the regulator pressure gauge read
zero before changing air tools or disconnecting the
hose from the air outlet. Failure to do so could result in
possible serious personal injury.
Rotate regulator knob fully counterclockwise in order to
close the air flow.
Fill the compressor pump with oil. Do not overfill.
Connect the power cord to the power supply.
Place the lever of the pressure switch in ‘AUTO’
position, in order to switch on the compressor.
Rotate pressure regulator knob to desired line
pressure. Turning the knob clockwise increases
air pressure at the outlet; turning counterclockwise
reduces air pressure at the outlet.
14
Page 15
DRAINING THE TANK
See Figures 10 - 11.
To help prevent tank corrosion and keep moisture out of
the air used, the tank of the compressor should be drained
daily.
A correct use of the drain valve:
■ Verify that the compressor is turned off.
■ Holding the handle, tilt the compressor toward the drain
valve so that it’s set in a lower position.
■ Open the drain valve completely.
■ Keep the compressor tilted (figure 11) until all moisture
has been removed.
■ Drain moisture from tank into a suitable container.
NOTE: Condensate is a polluting material and should
be disposed of in compliance with local regulations.
■ If drain valve is clogged, release all air pressure by
pulling the safety valve. Remove and clean valve, then
reinstall.
Mk WARNING:
Unplug the air compressor and release all air from
the tank before servicing. Failure to depressurize tank
before attempting to remove valve may cause serious
personal injury.
OPERATION
■ Turn off drain valve until completely closed.
CHECKING THE SAFETY VALVE
See Figure 12.
WARNING:
Do not attempt to tamper with safety valve. Anything
loosened from this device could fly up and hit you.
Failure to heed this warning could result in death or
serious personal injury.
The safety valve will automatically release air if the air
receiver pressure exceeds the preset maximum. The valve
should be checked before each day of use by pulling the
ring by hand.
■ Turn the air compressor on and allow the tank to
fill. The compressor will shut off when the pressure
reaches the preset maximum.
■ Turn the air compressor off.
■ Pull the ring on the safety valve to release air for twenty
seconds.
■ Release the ring. Air must immediately stop escaping
when the ring is released. Any continued loss of air
after releasing the safety valve ring indicates a problem
with the safety valve. Discontinue use and seek service
before continued use of the air compressor.
Mk WARNING:
If air leaks after the ring has been released, or if the
valve is stuck and cannot be actuated by the ring,
Do Not use the air compressor until the safety valve
has been replaced. Use of the air compressor in this
condition could result in serious personal injury.
15
Page 16
MAINTENANCE
A WARNING:
When servicing, use only identical Harbor Freight Tools
replacement parts. Use of any other parts may create a
hazard or cause product damage.
dk WARNING:
Always wear safety goggles or safety glasses with side
shields during power tool operation or when blowing
dust. If operation is dusty, also wear a dust mask.
dk WARNING:
Always release all pressure, disconnect from power
supply, and allow unit to cool to the touch before
cleaning or making repairs on the air compressor.
GENERAL MAINTENANCE
Humidity in the air causes condensate to form in the air
tank. This condensate should be drained daily and/or
every hour, using the instructions found in Draining the
Tank.
The safety valve automatically releases air if the air
receiver pressure exceeds the preset maximum. Check
the safety valve before each use following the instructions
found in
Inspect the tank yearly for rust, pin holes, or other
imperfections that could cause it to become unsafe.
Checking the Safety Valve.
CHECK THE OIL LEVEL AT REGULAR INTERVALS
See Figure 13.
Place the compressor on a level and straight surface. The
oil level must be between the two marks MAX and MIN on
the oil sight glass (fig. 13).
Changing the oil: use SAE 40 oil (for cold climates,
SAE 20 is recommended). Do not mix different grade
oils. If the oil changes color (whitish = presence of water;
dark = overheated), it is good practice to replace the oil
immediately.
It should be refilled for the first time after 100 hours of
operation. Thereafter the oil should be drained and refilled
after every 300 hours in service.
CHANGING THE OIL
See Figures 13 - 14.
Switch off the engine and pull the mains plug out of the
socket. After releasing any air pressure you can unscrew
the oil drain plug (fig. 13) from the compressor pump. To
prevent the oil from running out in an uncontrolled manner,
hold a small metal chute under the opening and collect the
oil in a vessel. If the oil does not drain out completely, we
recommend tilting the compressor slightly.
Dispose of the old oil at a drop-off point for old oil.
Avoid using solvents when cleaning plastic parts. Most
plastics are susceptible to damage from various types of
commercial solvents and may be damaged by their use.
Use clean cloths to remove dirt, dust, oil, grease, etc.
dk WARNING:
Do not at any time let brake fluids, gasoline, petroleumbased products, penetrating oils, etc., come in contact
with plastic parts. Chemical can damage, weaken or
destroy plastic which may result in serious personal
injury. Electric tools used on fiberglass material, wall
board, spackling compounds, or plaster are subject
to accelerated wear and possible premature failure
because the fiberglass chips and grindings are highly
abrasive to bearings, brushes, commutators, etc.
Consequently, we do not recommend using this tool for
extended work on these type of materials. However, if
you do work with any of these materials, it is extremely
important to clean the tool using compressed air.
Page 17
MAINTENANCE
When the oil has drained out, re-fit the oil drain plug (fig.
13). Fill new oil through the oil filler opening until it comes
up to the required level. Do not overfill. After topping up,
tighten the oil fill plug (fig. 14), making sure that there are
no leaks during use. Once a week, check the oil level to
assure proper lubrication.
RETENSIONING THE V-BELT
See Figures 15 - 17.
■ Pull out the power plug and remove the safety guard for
the V-belt (figures 15 - 16).
■ Slacken the four motor fixing screws (figure 17).
■ Shift the motor until the V-belt is tensioned to the point
where it can still be depressed by approx. 0.4-0.8 in.
(1-2 cm) at the longest free position.
■ Retighten the motor fixing screws and refit the safety
guard for the V-belt.
SAFETY GUARD
FOR THE V-BELT
Fig. 15
SAFETY GUARD
FOR THE V-BELT
Fig. 16
0.4-0.8 in.
-2 cm)
V-BELT
TIGHTENING OF HEAD TENSION RODS
See Figure 18.
■ Check that all screws (in particular those of the head of
the unit) are tightly drawn up.
■ The check must be carried out prior to the first
compressor starting. And after the first hour of work.
■ Tightening values for the tension rods of the head:
Nm min. torque = 22
Nm max. torque = 27
MOTOR FIXING SCREW
Fig. 17
.Tv/ HEAD
?i y TENSION
^ 'ROD
Fig. 18
17
Page 18
MAINTENANCE
CLEANING THE INTAKE FILTER
See Figure 19.
The intake filter prevents dust and dirt being drawn in.
It is essential to clean this filter after at least every 100
hours in service. A clogged intake filter will decrease the
compressor’s performance dramatically. Undo the two
allen screws. You can then remove the filter from the two
halves of the plastic housing, tap it to remove the dirt, blast
it down with low-pressure compressed air (approx. 3 bar)
and re-insert it.
18
Page 19
TROUBLESHOOTING
Problem
Compressor will not run Loss of power or overheating
No electrical power
Blown shop/house fuse
Shop/house breaker open
Thermal overload open
Pressure switch bad
Tank is full of air
Motor hums but cannot run or runs
slowly
Fuses blow/circuit breaker trips
repeatedly
Thermal overload protector cuts out
repeatedly
Air receiver pressure drops when
compressor shuts off
Low voltage
Wrong gauge wire or length of exten
sion cord
Shorted or open motor winding
Defective check valve or unloader
Incorrect size fuse, circuit overload
Wrong gauge wire or length of exten
sion cord
Defective check valve or under loader
Low voltage
Lack of proper ventilation/room tem
perature too high
Wrong gauge wire or length of exten
sion cord
Loose connections (fittings, tubing,
etc.)
Loose drain valve
Check valve leaking
Possible Cause
Solution
Check for proper use of extension
cord
Check to be sure unit is plugged in
Check fuse/breaker or motor over
load
Replace shop/house blown fuse
Reset shop/house breaker, determin
ing why problem happened
Motor will restart when cool
Replace pressure switch
Compressor will turn on when tank
pressure drops to cut-in pressure
Check with voltmeter
Check for proper gauge wire and
cord length
Take compressor to service center
Take compressor to service center
Check for proper fuse, use time
delay fuse, disconnect other electri
cal appliances from circuit or operate
compressor on its own branch circuit
Check for proper gauge wire and
cord length
Take compressor to service center
Check with voltmeter
Move compressor to well-ventilated
area
Check for proper gauge wire and
cord length
Check all connections with soap and
water solution and tighten
Tighten drain valve
Take compressor to service center
Excessive moisture in discharge air
Compressor runs continuously
Compressor vibrates
Air output lower than normal Broken inlet valves
Excessive water in air tank
High humidity
Defective pressure switch
Excessive air usage
Loose mounting bolts Tighten mounting bolts
Connections leaking
^ DANGER:
Do not disassemble check valve
with air in tank — bleed tank.
Drain tank
Move to area of less humidity; use air
line filter
Take compressor to service center
Decrease air usage; compressor not
large enough for tool’s requirement
Take compressor to service center
Tighten connections
19
Page 20
TROUBLESHOOTING
Problem
Air leak from the valve of the pressure
switch
Reduction of efficiency, frequent start
up. Low pressure values
The motor and/or the compressor
overheat irregularly
After an attempt to start the
compressor, it stops due to tripping of
the thermal cutout caused by forcing of
the motor
During operation, the compressor
stops for no apparent reason
When operating, the compressor
vibrates and the motor emits an
irregular buzzing sound. If it stops, it
does not restart although the sound of
the motor is present
Irregular presence of oil in the network
Leaking of condensate from the vent
cock
Possible Cause
Check valve does not perform its
function correctly due to wear or dirt on
the seal
Condensate drainage cock open
Rilsan hose not inserted correctly in
pressure switch
Excessively high consumption
Leaks from joints and/or pipes
Clogging of the suction filter
Slipping of the belt
Insufficient ventilation
Closing of air ducts
Insufficient lubrication
Start-up with head of the compressor
charged
Low temperature
Voltage too low
Incorrect or insufficient lubrication
Inefficient electrovalve
Tripping of the thermal cutout of the
motor
Electric fault
Faulty capacitor
Too much oil inside the unit
Wear on segments
Presence of dirt/grit inside the cock Clean the cock
Unscrew the hex-shaped head of the
check valve, clean the housing and the
special rubber disk (replace if worn).
Re-assembler and tighten carefully
Close the condensate drainage cock
Insert the Rilsan hose correctly inside
the pressure switch
Decrease the demand of compressed
air
Change gaskets
Clean/replace the suction filter
Check V-belt tension
Improve ambient conditions
Check and if necessary clean the air
filter
Top up or change oil
Release the compressor head by using
the pressure switch push button
Improve ambient conditions
Check that the mains voltage matches
that of the dataplate. Eliminate any
extensions
Check level, top up and if necessary
change the oil
Take compressor to the service center
Check level oil
Operate on the lever of the pressure
switch returning this to the OFF
position.
Reset the thermal cutout and restart.
If the fault persists, take the
compressor to the service center
Take compressor to the service center
Have the capacitor replaced
Check oil level
Take compressor to the service center
Solution
20
Page 21
NOTES
21
Page 22
LIMITED 1 YEAR / 90 DAY WARRANTY
Harbor Freight Tools Co. makes every effort to assure that its products meet
high quality and durability standards, and warrants to the original purchaser that for a
period of one year from date of purchase that the tank is free of defects in materials
and workmanship (90 days if used by a professional contractor or if used as rental
equipment). Harbor Freight Tools also warrants to the original purchaser, for a period of
ninety days from date of purchase, that all other parts and components of the product
are free from defects in materials and workmanship. This warranty does not apply to
damage due directly or indirectly to misuse, abuse, negligence or accidents, repairs or
alterations outside our facilities, normal wear and tear, or to lack of maintenance. We
shall in no event be liable for death, injuries to persons or property, or for incidental,
contingent, special or consequential damages arising from the use of our product.
Some states do not allow the exclusion or limitation of incidental or consequential
damages, so the above limitation of exclusion may not apply to you. THIS WARRANTY
IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED,
INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS.
To take advantage of this warranty, the product or part must be returned to us
with transportation charges prepaid. Proof of purchase date and an explanation of the
complaint must accompany the merchandise. If our inspection verifies the defect, we
will either repair or replace the product at our election or we may elect to refund the
purchase price if we cannot readily and quickly provide you with a replacement. We will
return repaired products at our expense, but if we determine there is no defect, or that
the defect resulted from causes not within the scope of our warranty, then you must
bear the cost of returning the product.
This warranty gives you specific legal rights and you may also have other rights
which vary from state to state.
3491 Mission Oaks Blvd. • PO Box 6009 • Camariiio, CA 93011 • (800) 444-3353
A WARNING:
The brass components of this product contain lead, a
chemical known to the state of California to cause birth
defects (or other reproductive harm).
(California health & safety code § 25249.5, et seq.)
SKU 67127 For technical questions, please call 1-800-444-3353.
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Page 23
CENTRALPNEUMATIC
Portable Air Compressor
Model No. 68127
Replacement Parts List
Ver. 2010.12
Page 24
2
Page 25
PORTABLE AIR COMPRESSOR PARTS LIST- MODEL NO. 68127
The model number will be found on a plate attached to air tank. Always mention the model number in all
correspondence regarding your PORTABLE AIR COMPRESSOR or when ordering replacement parts.
KEY NO. CODE
023 2881000
101 9413387021
104 9083910
105 9048003
106 9047061
107 9047051
108 9051143
109 9052130
110 9049115
112 9053003
125 9076080
126 9075036
131 9416728
132 9065301
135 844F001
142 838000A
145 9043348
300 9420719
500 9416774
501 9416769
502 9083296
PUMP 2800070
DESCRIPTION Q.TY
AIR FILTER..........................................................................................................................1
TANK 29 GAL......................................................................................................................1
HANDLE..............................................................................................................................1
CHECK VALVE....................................................................................................................1
QUICK COUPLING............................................................................................................. 1
TAP BALL VALVE...............................................................................................................1
PRESSURE REGULATOR.................................................................................................1
GAUGE 50 1/4 RAD CPI.....................................................................................................1
SAFETY VALVE..................................................................................................................1
NIPPLE................................................................................................................................1
PULLEY 90 x 1A..................................................................................................................1
BELT....................................................................................................................................1
PRESSURE SWITCH......................................................................................................... 1
CORD WITH PLUG.............................................................................................................1
MOTOR HP2 M 120/60.......................................................................................................1
BELT GUARD......................................................................................................................1
SENDING PIPE...................................................................................................................1
KIT WHEELS.......................................................................................................................1
GAUGE 50 1/4 RAD CPI LONG
KNOB L15............................................................................................................................1
SUPPORT FOR BELT GUARD..........................................................................................1
PUMP B2800 WITH AFTERCOOLER 180°
.........................................................................................
.......................................................................
1
1
3
Page 26
501/'
066
024
064
006
062
<505
-.026
-065
\030
032
060
506
507
005
503
KEY NO. CODE DESCRIPTION Q.TY KEY NO. CODE
001 2860101 CRANKCASE................................
002 2830001 CYLINDER
003 3860400 HEAD
004 2860200 CRANKSHAFT..............................
005 2660500 CRANKCASE BOTTOM
006 2840050 ASS.VALVE PLATE
008 2810100 CONROD ......................................
01 2 1421100 PISTON
01 4 3021 200 PISTON PIN
01 5 91 40040 SNAP RING...................................
01 6 9020011 SEALAC
017 9020041 SEALROS
01 8 9020071 SEALROF......................................
023 2881 000 AIR FILTER
024 28701 00 AFTERCOOLER ...........................
026 2060690 COVER LOV .................................
027 2060500 COVER LV
029 26001 00 FLYWHEEL ..................................
030 91 70030 BEARING
....................................
...........................................
......................
.........................................
..................................
........................................
.....................................
...................................
...................................
......................................
..............
...............
1 032 9022001
...............
1 033 9024029
...............
1 034 91 6301 0
...............
1 035 9110014
...............
1 036 9004008
...............
1 060 26501 01
...............
2 061 2850200
...............
2 062 2850300
...............
2 064 2850400
...............
4 065 2050500
...............
2 066 1 070200
...............
2 501 9101144
...............
2 502 941 5853
...............
1 503 9411090
...............
1 504 91 01 594
...............
1 505 91 01 094
...............
1 506 91 01 034
...............
1 507 91 62020
...............
2
4
DESCRIPTION Q.TY
OIL LEVEL....................................................1
BREATHER
GASKET........................................................1
SCREW
WASHER.......................................................1
GASKET CRANKCASE
GASKET CRANKCASE-CYLINDER.. 1
GASKET CYLINDER-VALVE PLATE. 1
GASKET VALVE PLATE-HEAD....................1
GASKET COVER...........................................2
GASKET AFTERCOOLER
SCREW..........................................................2
SCREW..........................................................2
SCREW........................................................12
SCREW..........................................................6
SCREW..........................................................8
SCREW
WASHER ......................................................1
..................................................
.........................................................
...............................
...........................
.........................................................
1
1
1
1
1
05
PO
05
PO
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05
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