Harbor Freight Tools 7708 User Manual
2-1/2 HP 10 GALLON
125 PSI AIR COMPRESSOR
Model
SET UP AND OPERATING INSTRUCTIONS
67708
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© 2010 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.
Manual Revised 11b
CONTENTS
PARTS LIST ...................................... 18
IMPORTANT SAFETY
INFORMATION .................................3
GENERAL COMPRESSOR SAFETY
WARNINGS ........................................... 3
AIR COMPRESSOR SAFETY
WARNINGS ........................................... 4
GROUNDING ......................................6
110-120 V~ GROUNDED
COMPRESSORS: COMPRESSORS
WITH THREE PRONG PLUGS ............ 6
SYMBOLOGY .......................................... 7
SPECIFICATIONS ............................... 8
UNPACKING .......................................8
INSTRUCTIONS FOR PUTTING
INTO USE .........................................8
ASSEMBLY DIAGRAM .....................19
LIMITED 1 YEAR / 90 DAY
WARRANTY ...................................20
FUNCTIONS ............................................ 8
ASSEMBLY/MOUNTING ......................... 9
CHECKING THE OIL ............................. 10
GENERAL OPERATING
INSTRUCTIONS .............................11
COMPRESSOR AREA SET UP .............11
GENERAL OPERATION ........................11
EMERGENCY DEPRESSURIZATION .. 12
AUTOMATIC SHUT OFF SYSTEM ....... 12
MAINTENANCE AND SERVICING ...13
CLEANING, MAINTENANCE, AND
LUBRICATION .................................... 13
MAINTENANCE SCHEDULE ................ 13
OIL MAINTENANCE .............................. 14
DRAINING MOISTURE FROM THE
TANK ................................................... 14
AIR FILTER MAINTENANCE ................ 14
TROUBLESHOOTING ........................... 15
Page 2 For technical questions, please call 1-800-444-3353. SKU 67708
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.
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.
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.
NOTICE is used to
address practices not
related to personal injury.
CAUTION, without the
safety alert symbol, is
used to address practices not
related to personal injury.
General Compressor Safety
Warnings
WARNING Read all safety warnings
and instructions. Failure to follow
the warnings and instructions may
result in electric shock, re and/or
serious injury.
Save all warnings and instructions
for future reference.
1. Work area safety
a. Keep work area clean and well lit.
Cluttered or dark areas invite accidents.
b. Do not operate the Compressor in
explosive atmospheres, such as in
the presence of ammable liquids,
gases or dust. Compressor motors
produce sparks which may ignite the
dust or fumes.
c. Keep children and bystanders away
from an operating compressor.
2. Electrical safety
a. Compressor plugs must match the
outlet. Never modify the plug in
any way. Do not use any adapter
plugs with grounded compressors.
Standard plugs and matching outlets
will reduce risk of electric shock.
b. Do not expose compressor to rain
or wet conditions. Water entering
a compressor will increase the risk of
electric shock.
c. Do not abuse the cord. Never
use the cord for unplugging the
Page 3For technical questions, please call 1-800-444-3353.SKU 67708
compressor. Keep cord away from
heat, oil, sharp edges or moving
parts. Damaged or entangled cords
increase the risk of electric shock.
3. Personal safety
a. Stay alert, watch what you are
doing and use common sense when
operating this compressor. Do
not use this compressor while you
are tired or under the inuence of
drugs, alcohol or medication. A
moment of inattention while operating
a compressor may result in serious
personal injury.
b. Use personal protective equipment.
Always wear ANSI-approved eye
protection during setup and use.
instructions for lubricating and
changing accessories. Keep dry,
clean and free from oil and grease.
Check for misalignment or binding
of moving parts, breakage of parts
and any other condition that may
affect the compressor’s operation.
If damaged, have the compressor
repaired before use. Many accidents
are caused by a poorly maintained
compressor.
e. Use the compressor in accordance
with these instructions, taking into
account the working conditions and
the work to be performed. Use of
the compressor for operations different
from those intended could result in a
hazardous situation.
c. Prevent unintentional starting.
Ensure the switch is in the offposition before connecting to power
source or moving the compressor.
4. Compressor use and care
a. Do not use the compressor if the
switch does not turn it on and
off. Any compressor that cannot be
controlled with the switch is dangerous
and must be repaired.
b. Disconnect the plug from the
power source before making any
adjustments, changing accessories,
or storing the compressor. Such
preventive safety measures reduce
the risk of starting the compressor
accidentally.
c. Store an idle compressor out of
the reach of children and do not
allow persons unfamiliar with the
compressor or these instructions to
operate it. A compressor is dangerous
in the hands of untrained users.
d. Maintain the compressor. Keep
the compressor clean for better
and safer performance. Follow
5. Service
a. Have your compressor serviced by
a qualied repair person using only
identical replacement parts. This will
ensure that the safety of the compressor
is maintained.
Air Compressor Safety Warnings
1. Risk of re or explosion - do not
spray ammable liquid in a conned
area or towards a hot surface. Spray
area must be well-ventilated. Do not
smoke while spraying or spray where
spark or ame 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 higher than marked
maximum pressure of attachment.
3. Risk of injury - do not direct air
stream at people or animals.
4. Do not use to supply breathing air.
Page 4 For technical questions, please call 1-800-444-3353. SKU 67708
5. Do not leave compressor unattended
for an extended period while plugged
in. Unplug compressor after working.
6. Keep compressor well-ventilated. Do
not cover compressor during use.
7. Drain Tank daily and after use. Internal
rust causes tank failure and explosion.
8. Add correct amount of compressor
oil before rst use and every use.
Operating with low or no oil causes
permanent damage and voids warranty.
9. Do not remove the valve cover or adjust
internal components.
10. Compressor head gets hot during
operation. Do not touch it or allow
children nearby during or immediately
following operation.
11. Do not use the air hose to move the
compressor.
12. Release the pressure in the storage tank
before moving.
13. The use of accessories or attachments
not recommended by the manufacturer
may result in a risk of injury to persons.
14. All air line components, including hoses,
pipe, connectors, lters, etc., must be
rated for a minimum working pressure
of 150 PSI, or 150% of the maximum
system pressure, whichever is greater.
15. USE OF AN EXTENSION CORD IS NOT
RECOMMENDED. If you choose to
use an extension cord, use the following
guidelines:
RECOMMENDED MINIMUM WIRE
GAUGE FOR EXTENSION CORDS
(120 VOLT)
NAMEPLATE
AMPERES
(at full load)
0 – 6 18 16 16 14
6.1 – 10 18 16 Do not use.
10.1 – 12 16 16 Do not use.
12.1 – 16 14 12 Do not use.
EXTENSION CORD
LENGTH
25’ 50’ 100’ 150’
TABLE A
a. Make sure your extension cord is in
good condition.
b. Be sure to use an extension cord
which is heavy enough to carry the
current your product will draw. An
undersized cord will cause a drop in line
voltage resulting in loss of power and
overheating. Table A shows the correct
size to use depending on cord length
and nameplate ampere rating. If in
doubt, use the next heavier gauge. The
smaller the gauge number, the heavier
the cord.
16. Industrial applications must follow OSHA
guidelines.
17. Maintain labels and nameplates on the
compressor. These carry important
safety information. If unreadable or
missing, contact Harbor Freight Tools for
a replacement.
18. This product is not a toy. Keep it out of
reach of children.
19. Operate unit on level surface. Check
oil level daily and ll to marked level if
needed.
Page 5For technical questions, please call 1-800-444-3353.SKU 67708
20. People with pacemakers should
consult their physician(s) before use.
Electromagnetic elds in close proximity
to heart pacemaker could cause
pacemaker interference or pacemaker
failure.
proper outlet installed by a
qualied electrician.
110-120 V~ Grounded Compressors:
Compressors with
Three Prong Plugs
21. 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.)
22. 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.
SAVE THESE
INSTRUCTIONS.
GROUNDING
TO PREVENT
ELECTRIC SHOCK
AND DEATH FROM INCORRECT
GROUNDING WIRE
CONNECTION:
Check with a qualied electrician
if you are in doubt as to whether
the outlet is properly grounded.
Do not modify the power cord
plug provided with the
compressor. Never remove the
grounding prong from the plug.
Do not use the compressor if the
power cord or plug is damaged.
If damaged, have it repaired by a
service facility before use. If the
plug will not t the outlet, have a
1. In the event of a malfunction or
breakdown, grounding provides a path
of least resistance for electric current to
reduce the risk of electric shock. This
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.
2. Do not modify the plug provided – if it will
not t the outlet, have the proper outlet
installed by a qualied electrician.
3. Improper connection of the equipmentgrounding 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.
4. Check with a qualied electrician or
service personnel if the grounding
instructions are not completely
understood, or if in doubt as to whether
the compressor is properly grounded.
5. Use only 3-wire extension cords that
have 3-prong grounding plugs and
3-pole receptacles that accept the
compressor’s plug.
6. Repair or replace damaged or worn cord
immediately.
Page 6 For technical questions, please call 1-800-444-3353. SKU 67708
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