Operating instructions | Central Pneumatic Air Compressor 99781 Air Compressor User Manual

Oil-less air compressor
99780
99781
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.
Save this manual.
Copyright© 2008 by Harbor Freight Tools®. All rights reserved. No portion of this manual or any artwork
contained herein may be reproduced in any shape or form without the express written consent of
Harbor Freight Tools. Diagrams within this manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product described herein. Tools required for
assembly and service may not be included.
For technical questions or replacement parts, please call 1-800-444-3353.
REV 10a
NOTICE is used to
address practices
not related to personal injury.
Save This Manual
Keep this manual for the safety warnings and precautions, assembly, operating, inspection, maintenance and cleaning
procedures. Write the product’s serial
number in the back of the manual near the
assembly diagram (or month and year of
purchase if product has no number). Keep
this manual and the receipt in a safe and
dry place for future reference.
CAUTION, without
the safety alert
symbol, is used to address
practices not related to
personal injury.
General Safety Warnings
WARNING Read all safety
warnings and instructions.
Failure to follow the warnings
and instructions may result in
explosion, fire and/or serious
injury.
Save all warnings and
instructions for future reference.
Important SAFETY
Information
In this manual, on the labeling,
and all other information provided with this product:
This is the safety alert
symbol. It is used to alert
you to potential personal
injury hazards. Obey all
safety messages that
follow this symbol to avoid
possible injury or death.
1.
a.Keep work area clean and well lit.
Cluttered or dark areas invite accidents.
b.Do not operate tools in explosive
atmospheres, such as in the presence of flammable liquids, gases
or dust. Tools become hot which
may ignite the dust or fumes.
DANGER indicates
a hazardous
situation which, if not
avoided, will result in death or
serious injury.
WARNING
indicates a
hazardous situation which, if
not avoided, could result in
death or serious injury.
CAUTION, used
with the safety
alert symbol, indicates a
hazardous situation which, if
not avoided, could result in
minor or moderate injury.
SKU 99780-81
Work area safety
c.Keep children and bystanders
away while operating a tool. Distractions can cause you to lose control.
2.
Electrical safety
a.Tool plugs must match the outlet.
Never modify the plug in any way.
Do not use any adapter plugs with
grounded tools. Unmodified plugs
and matching outlets will reduce risk
of electric shock.
b.Avoid body contact with grounded
surfaces such as pipes, radiators,
ranges and refrigerators. There is
For technical questions, please call 1-800-444-3353.
Page 2
e.Dress properly. Do not wear loose
clothing or jewelry. Keep your
hair, clothing and gloves away
from moving parts. Loose clothes,
jewelry or long hair can be caught in
moving parts.
an increased risk of electric shock if
your body is grounded.
c.Do not expose tools to rain or wet
conditions. Water entering a tool
will increase the risk of electric shock.
d.Do not abuse the cord. Never use
the cord for carrying, pulling or
unplugging the tool. Keep cord
away from heat, oil, sharp edges or
moving parts. Damaged or entangled cords increase the risk of electric
shock.
e.If operating a tool in a damp location is unavoidable, use a Ground
Fault Circuit Interrupter (GFCI)
protected supply. Use of a GFCI
reduces the risk of electric shock.
3.
Personal safety
a.Stay alert, watch what you are doing and use common sense when
operating this tool. Do not use
this tool while you are tired or under the influence of drugs, alcohol
or medication. A moment of inattention while operating tools may result
in serious personal injury.
b.Use personal protective equipment. Always wear eye protection.
Safety equipment such as dust mask,
non-skid safety shoes, hard hat, or
hearing protection used for appropriate conditions will reduce personal
injuries.
c.Prevent unintentional starting.
Ensure the switch is in the off-position before connecting to power
source or moving the tool.
d.Do not overreach. Keep proper
footing and balance at all times.
This enables better control of the tool
in unexpected situations.
SKU 99780-81
f. Only use safety equipment that
has been approved by an appropriate standards agency. Unapproved
safety equipment may not provide
adequate protection. Eye protection
must be ANSI-approved and breathing protection must be NIOSH-approved for the specific hazards in the
work area.
4.
Tool use and care
a.Do not force the tool. Use the
correct tool for your application.
The correct tool will do the job better
and safer at the rate for which it was
designed.
b.Do not use the tool if the switch
does not turn it on and off. Any
tool that cannot be controlled with
the switch is dangerous and must be
repaired.
c.Disconnect the plug from the
power source of the tool before
making any adjustments, changing
accessories, or storing tools. Such
preventive safety measures reduce
the risk of starting the tool accidentally.
d.Store idle tools out of the reach of
children and do not allow persons
unfamiliar with the tool or these
instructions to operate it. Tools are
dangerous in the hands of untrained
users.
e.Maintain tools. Check for misalignment or binding of moving
parts, breakage of parts and any
For technical questions, please call 1-800-444-3353.
Page 3
other condition that may affect the
tool’s operation. If damaged, have
the tool repaired before use. Many
accidents are caused by poorly maintained tools.
f. Use the tool in accordance with
these instructions, taking into account the working conditions and
the work to be performed. Use of
the tool for operations different from
those intended could result in a hazardous situation.
5.
Do not direct air flow from the Compressor at people or animals.
6.
Industrial applications must follow
OSHA requirements.
7.
Maintain labels and nameplates on
the tool. These carry important safety
information. If unreadable or missing, contact Harbor Freight Tools for a
replacement.
8.
Avoid unintentional starting. Prepare
to begin work before turning on the
tool.
9.
Do not leave the tool unattended
when it is plugged into an electrical
outlet. Turn off the tool, and unplug it
from its electrical outlet before leaving.
Service
a.Have your tool serviced by a qualified repair person using only identical replacement parts. This will
ensure that the safety of the tool is
maintained.
Air Compressor Safety Warnings
1.
5.
Risk of fire or explosion - do not
spray flammable liquid in a confined
area or towards a hot surface. 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
feet away from explosive vapors,
such as when spraying with a spray
gun.
2.
Risk of bursting - do not adjust
regulator to result in output pressure
greater than marked maximum pressure of attachment.
3.
Risk of injury - do not direct air
stream at body. To reduce the risk of
electric shock, do not expose to rain.
Store indoors.
4.
Do not use to supply breathing air.
SKU 99780-81
10. This product is not a toy. Keep it out
of reach of children.
11. 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.)
12. People with pacemakers should
consult their physician(s) before use.
Electromagnetic fields in close proximity to heart pacemaker could cause
pacemaker interference or pacemaker failure. In addition, people with
pacemakers should:
• Avoid operating alone.
• Do not use with power switch locked
on.
• Properly maintain and inspect to
avoid electrical shock.
• Any power cord must be properly
grounded. Ground Fault Circuit Interrupter (GFCI) should also be imple-
For technical questions, please call 1-800-444-3353.
Page 4
Save these
instructions.
mented – it prevents sustained electrical shock.
13. 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
examples of these chemicals are:
• Lead from lead-based paints
• Crystalline silica from bricks and cement or 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, such as
those dust masks that are specially
designed to filter out microscopic
particles. (California Health & Safety
Code § 25249.5, et seq.)
14. WARNING: Handling the cord on
this product will expose you to lead,
a chemical known to the State of
California to cause cancer, and birth
defects or other reproductive harm.
Wash hands after handling. (California Health & Safety Code § 25249.5,
et seq.)
15. The warnings, precautions, and instructions discussed in this instruction
manual cannot cover all possible conditions and situations that may occur.
It must be understood by the operator
that common sense and caution are
factors which cannot be built into this
product, but must be supplied by the
operator.
SKU 99780-81
Grounding
To prevent
electric shock
and death from
incorrect grounding
wire connection:
Check with a qualified
electrician if you are in doubt
as to whether the outlet is
properly grounded. Do not
modify the power cord plug
provided with the tool. Never
remove the grounding prong
from the plug. Do not use the
tool if the power cord or plug
is damaged. If damaged, have
it repaired by a service facility
before use. If the plug will not
fit the outlet, have a proper
outlet installed by a qualified
electrician.
Grounded Tools: Tools with Three
Prong Plugs
1.
Tools marked with “Grounding Required” have a three wire cord and
three prong grounding plug. The
plug must be connected to a properly
grounded outlet. If the tool should
For technical questions, please call 1-800-444-3353.
Page 5
electrically malfunction or break
down, grounding provides a low
resistance path to carry electricity
away from the user, reducing the risk
of electric shock. (See 3-Prong Plug
and Outlet.)
2.
3.
The grounding prong in the plug is
connected through the green wire inside the cord to the grounding system
in the tool. The green wire in the cord
must be the only wire connected to
the tool’s grounding system and must
never be attached to an electrically
“live” terminal. (See 3-Prong Plug
and Outlet.)
The tool must be plugged into an
appropriate outlet, properly installed
and grounded in accordance with all
codes and ordinances. The plug and
outlet should look like those in the
preceding illustration. (See 3-Prong
Plug and Outlet.)
Symbology
Double Insulated
Canadian Standards Association
Underwriters Laboratories, Inc.
V~
A
Volts Alternating Current
Amperes
No Load Revolutions per Minute
n0 xxxx/min. (RPM)
SKU 99780-81
Specifications
Electrical Requirements 120 V~ / 60 Hz / 9.3 A
Air Hose Connection
1/4” 18 NPT
Maximum Air Pressure
155 PSI
Air Pressure Cut On
125 PSI
Air Tank Capacity
Air Flow Capacity
Motor
sku 99780: 17 Gallons
sku 99781: 26 Gallons
6 SCFM @ 40 PSI
4 SCFM @ 90 PSI
4 HP, 13000 RPM
233060
Unpacking
When unpacking, make sure that the
item is intact and undamaged. If any parts
are missing or broken, please call Harbor
Freight Tools at the number shown on the
cover of this manual as soon as possible.
Instructions for
putting into use
Read the entire Important
Safety Information
section at the beginning of this
manual including all text under
subheadings therein before set
up or use of this product.
To prevent
serious injury
from accidental
operation:
Turn the Power Switch of the
tool to its “OFF” position and
unplug the tool from its
electrical outlet before
assembling or making any
adjustments to the tool.
For technical questions, please call 1-800-444-3353.
Page 6
Note: For additional information regarding
the parts listed in the following pages,
refer to the Assembly Diagram near
the end of this manual.
Front
Handle (25)
Figure 1
Rear Handle (18)
Knobs (29)
Assembly
1.
Connect the Front Handle (25) to
the top of the Compressor with two
Knobs on each side. See Figure 1.
2.
Connect the Rear Handle (18) to
the top of the Compressor with two
Knobs (29) on each side. See Figure1.
Front
Brace
(31)
3.
Connect the Front Brace (31) to the
bottom of the Air Tank (30). Secure
using four Knobs (29). See Figure 1.
4.
To connect the Wheels (38), first put
a washer (35) at the end of each Axle
(34). See Figure 2.
5.
Put the Axles (34) in the wheel brackets and secure them using Nut (34).
See Figure 3 below.
6.
Put each Wheel (38) through the Axle
(34) on each side of the compressor.
See Figure 4.
7.
Put a Cotter Pin (36) through the
ends of each Axle (34) to secure the
Wheels (38). See Figure 5.
8.
Firmly press the Wheel Covers (37)
on each Wheel (38) until they snap
into place. See Figure 6.
Figure 3
Figure 2
Figure 4
SKU 99780-81
Wheel (38)
Knobs (29)
Figure 5
Figure 6
REV 08g; 10a
For technical questions, please call 1-800-444-3353.
Page 7
9.
To prevent
serious injury
from accidental
operation:
Turn the Power Switch of the
tool to its “OFF” position and
unplug the tool from its
electrical outlet before
performing any inspection,
maintenance, or cleaning
procedures.
Connect a 1/4” NPT air hose (rated
155 PSI or higher) to the air connection. The air hose must be long
enough to reach the work area with
enough extra length to allow free
movement while working.
10. Incorporate an in-line oiler, shut-off
valve, regulator with pressure gauge,
and filter for best service, as shown in
the diagram below. An in-line shutoff
valve is an important safety device
because it controls the air supply
even if the air hose is ruptured.
Male
Connector
Male
Connector
Tool
Quick
Coupler
Valve
Oiler
Air Hose
on Reel
1.
Make sure the air tool’s throttle or
switch is in the off position.
2.
Connect the tool that will be used for
the job to the airline.
3.
Close the in-line safety valve between the compressor and the tool.
4.
Connect an air hose rated to the intended PSI that will be used with the
tool to the Air Connection. The air
hose must be long enough to reach
the work area with enough extra
length to allow free movement while
working.
5.
Plug the Power Cord into a grounded
120 V electrical outlet.
6.
Move the Power Switch to its ON
position.
Filter
Air
Compressor
Quick
Coupler
Regulator with
Pressure Gauge
Recommended Air Line Components
Operating Instructions
Read the entire Important
Safety Information
section at the beginning of this
manual including all text under
subheadings therein before set
up or use of this product.
SKU 99780-81
For technical questions, please call 1-800-444-3353.
Page 8
b.wait until the Compressor cools
down;
PSI Gauge of
Compressor
Power
Switch
Safety
Valve
c. push the Circuit Breaker button;
d.turn Power Switch back to the ON
position and resume operation.
11. After the job is complete, move the
Power Switch to the OFF position.
Output
Regulator
PSI Gauge
for Tool
Circuit
Breaker
Air
Outlet
Connection
7.
Allow the Air Compressor to build up
pressure until it cycles off.
8.
Adjust the air compressor’s Output
Regulator so that the air output is
enough to properly power the tool,
but the output will not exceed the
tool’s maximum air pressure at any
time. Turn the knob clockwise to
increase pressure and counter-clockwise to decrease pressure. Adjust
the pressure gradually, while checking the air output gauge to set the
right pressure range.
9.
The Air Compressor will cycle up to
155 PSI before shutting off. It will
start to build pressure again when the
PSI of the Compressor drops to 125
PSI.
12. Pull up on the Safety Valve to release
pressure in the tank. Squeeze the
Trigger of the air tool to release pressure from the line
13. Turn the Drain Valve at the bottom
of the Tank two turns to release any
built-up moisture. Close the valve
after moisture has drained out. Do
not remove the Drain Valve.
Drain Valve
14. Disconnect the air hose and tool.
15. To prevent accidents, disconnect its
power supply after use. Clean, then
store the tool indoors out of children’s
reach.
10. If the Compressor becomes too hot
the circuit breaker will trip and it will
shut off. If this happens;
a.move the Power Switch to the OFF
position;
SKU 99780-81
For technical questions, please call 1-800-444-3353.
REV 10a
Page 9
Maintenance And
Servicing
Procedures not specifically
explained in this manual
must be performed only by a
qualified technician.
To prevent
serious injury
from accidental
operation:
Turn the Power Switch of the
tool to its “OFF” position and
unplug the tool from its
electrical outlet before
performing any inspection,
maintenance, or cleaning
procedures.
To prevent serious
injury from tool
failure:
Do not use damaged
equipment. If abnormal noise
or vibration occurs, have the
problem corrected before
further use.
be replaced only by a qualified
service technician.
PLEASE READ THE FOLLOWING
CAREFULLY
The manufacturer and/or distributor
has provided the parts list and
assembly diagram in this manual as
a reference tool only. Neither the
manufacturer or distributor makes
any representation or warranty of
any kind to the buyer that he or she
is qualified to make any repairs to the
product, or that he or she is qualified
to replace any parts of the product.
In fact, the manufacturer and/or
distributor expressly states that
all repairs and parts replacements
should be undertaken by certified
and licensed technicians, and not by
the buyer. The buyer assumes all risk
and liability arising out of his or her
repairs to the original product or
replacement parts thereto, or arising
out of his or her installation of
replacement parts thereto.
Cleaning, Maintenance, and
Lubrication
1.
BEFORE EACH USE, inspect the
general condition of the tool. Check
for loose screws, misalignment or
binding of moving parts, cracked or
broken parts, damaged electrical wiring, and any other condition that may
affect its safe operation.
2.
After Use, clean external surfaces
of the tool with clean cloth.
3.
WARNING! If the supply cord of
this power tool is damaged, it must
SKU 99780-81
For technical questions, please call 1-800-444-3353.
Page 10
Parts List
Part
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Description
Cover
Power Switch
Overload Protector
Screw ST4.2x25
Upper Housing
Cord Plate
Screw ST3.5x16
Motor/Pump Assembly
Screw
Washer
Bolt
Washer
Bracket Washer
Regulator
Screw ST4x18
Screw ST4x20
Cord Retainer
Rear Handle
Connector
Valve
SKU 99780-81
Parts List
Qty.
1
1
1
6
1
1
4
1
3
3
3
3
3
1
4
2
1
1
1
1
Part
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
Description
Pressure Control
Zip Tie
Wire
Power Cord
Front Handle
Tube
Tube
Hoop
Knob
Air Tank
Front Brace
Drain Valve
Nut M8
Axle
Washer
Cotter Pin
Wheel Cover
Wheels
39 Screw M5x8
For technical questions, please call 1-800-444-3353.
Qty.
1
2
1
1
1
1
1
1
12
1
1
1
1
2
2
2
2
2
1
Page 11
ASSEMBLY DIAGRAM
Record Product’s Serial Number Here:
Note: If product has no serial number, record month and year of purchase instead.
Note: Some parts are listed and shown for illustration purposes only, and are not available individually as replacement parts.
SKU 99780-81
For technical questions, please call 1-800-444-3353.
Page 12
Troubleshooting
Problem
Possible Causes
Overheating
1. Poor ventilation.
Compressor
operates, but with
low air output
2. Dirty cooling surfaces.
3. Compressor undersized for
application.
1. Valve or regulator loose or
leaking.
2. Valve or regulator damaged.
3. Air tank not pressurized yet.
Incorrect pressure 1. Pressure gauge worn or
gauge reading
damaged.
Likely Solutions
1. Move the compressor to an area with better
air circulation.
2. Clean compressor.
3. Check air requirements of tools.
1. Repair leaks.
2. Have valve or regulator repaired by a
qualified technician.
3. Allow pressure to build.
1. Have pressure gauge replaced by a qualified
technician.
Follow all safety precautions whenever diagnosing or servicing the
tool. Disconnect air supply before service.
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 • Camarillo, CA 93011 • (800) 444-3353
SKU 99780-81
For technical questions, please call 1-800-444-3353.
Page 13
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