Harbor Freight Tools 67847 User Manual
2.5 HP, 21 GALLON, 125 PSI
CAST IRON VERTICAL
AIR COMPRESSOR
Model
67847
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© 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.
CONTENTS
IMPORTANT SAFETY
INFORMATION ............................ 3
GENERAL COMPRESSOR
SAFETY WARNINGS.......................3
DRAINING MOISTURE FROM THE
TANK .............................................. 15
AIR FILTER MAINTENANCE ...........15
TROUBLESHOOTING ......................16
PARTS LIST ................................. 18
AIR COMPRESSOR SAFETY
WARNINGS ......................................5
GROUNDING ................................. 6
110-120 V~ GROUNDED
COMPRESSORS:
COMPRESSORS WITH THREE
PRONG PLUGS ...............................7
SYMBOLOGY ..................................... 7
SPECIFICATIONS .......................... 8
UNPACKING .................................. 8
INSTRUCTIONS FOR PUTTING
INTO USE .................................... 8
FUNCTIONS ....................................... 8
WORK PIECE AND WORK AREA
SET UP ............................................9
ASSEMBLY/MOUNTING .................... 9
ASSEMBLY DIAGRAM ................ 19
LIMITED 1 YEAR / 90 DAY
WARRANTY .............................. 20
CHECKING THE OIL ........................ 10
GENERAL OPERATING
INSTRUCTIONS ........................ 11
EMERGENCY
DEPRESSURIZATION ...................12
AUTOMATIC SHUT OFF SYSTEM ..12
MAINTENANCE AND
SERVICING ............................... 13
CLEANING, MAINTENANCE, AND
LUBRICATION ...............................13
MAINTENANCE SCHEDULE ........... 14
OIL MAINTENANCE .........................14
Page 2 For technical questions, please call 1-800-444-3353. SKU 67847
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
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
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
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.
Work area safety1.
Keep work area clean and well a.
lit. Cluttered or dark areas invite
accidents.
Do not operate the Compressor in b.
explosive atmospheres, such as in
the presence of ammable liquids,
gases or dust. Compressor motors
produce sparks which may ignite the
dust or fumes.
Keep children and bystanders c.
away from an operating
compressor.
Electrical safety2.
Compressor plugs must match a.
the outlet. Never modify the
plug in any way. Do not use any
adapter plugs with a grounded
compressor. Standard plugs and
Page 3For technical questions, please call 1-800-444-3353.SKU 67847
matching outlets will reduce risk of
electric shock.
NIOSH-approved for the specic
hazards in the work area.
Do not expose the compressor b.
to rain or wet conditions. Water
entering a compressor will increase
the risk of electric shock.
Do not abuse the cord. Never use c.
the cord for pulling or unplugging
the compressor. Keep cord
away from heat, oil, sharp edges
or moving parts. Damaged or
entangled cords increase the risk of
electric shock.
Personal safety3.
Stay alert, watch what you are a.
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.
Use personal protective b.
equipment. Always wear eye
protection. Safety equipment such
as a dust mask, non-skid safety
shoes, hard hat, or hearing protection
used for appropriate conditions will
reduce personal injuries.
Prevent unintentional starting. c.
Ensure the switch is in the offposition before connecting to
power source or moving the
compressor.
Only use safety equipment d.
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
Compressor use and care4.
Do not use the compressor if the a.
switch does not turn it on and
off. Any compressor that cannot
be controlled with the switch is
dangerous and must be repaired.
Disconnect the plug from the b.
power source of the compressor
before making any adjustments,
changing accessories, or storing
it. Such preventive safety measures
reduce the risk of starting the
compressor accidentally.
Store an idle compressor out of c.
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.
Maintain the compressor. Keep d.
the compressor clean for better
and safer performance. Following
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.
Use the compressor in accordance e.
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.
Page 4 For technical questions, please call 1-800-444-3353. SKU 67847
Service5.
Have your compressor serviced a.
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
overlled or low oil. Slowly ll to
full line, wait 2 minutes and ll
back up to full line. Compressor
has small passages that will ll
slowly.
Do not remove the Pressure Switch 10.
(54) cover or adjust the internal
components.
Risk of re or explosion - Do not 1.
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.
Risk of bursting - Do not adjust 2.
regulator higher than maximum
stated pressure of attachment.
Risk of injury - Do not direct air 3.
stream at people or animals.
To reduce the risk of electric shock, 4.
do not expose to rain. Store indoors.
Wear ANSI-approved safety goggles 5.
during use.
Do not use to supply breathing air. 6.
Do not use the air hose to move the 7.
compressor.
Drain Tank daily and after use. 8.
Internal rust causes tank failure and
explosion.
Add correct amount of compressor 9.
oil before rst use and every
use. Operating with the incorrect
amount of oil causes permanent
damage and voids warranty. To
prevent damage, do not use with
Do not use the air hose to move the 11.
compressor.
Compressor head gets hot during 12.
operation. Do not touch it or allow
children nearby during or immediately
following operation.
Release the pressure in the storage 13.
tank before moving.
The use of accessories or 14.
attachments not recommended by
the manufacturer may result in a risk
of injury to persons.
All air line components, including 15.
hoses, pipe, connectors, lters, etc.,
must be rated for a minimum working
pressure of 125 PSI, or 150% of
the maximum system pressure,
whichever is greater.
USE OF AN EXTENSION CORD 16.
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 14 12
EXTENSION CORD
LENGTH
25’ 50’ 100’ 150’
TABLE A
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RECOMMENDED MINIMUM WIRE
GAUGE FOR EXTENSION CORDS
(120 VOLT)
NAMEPLATE
AMPERES
(at full load)
10.1 – 12 16 16 14 12
12.1 – 16 14 12 Do not use.
TABLE A
EXTENSION CORD
LENGTH
25’ 50’ 100’ 150’
cause pacemaker interference or
pacemaker failure.
WARNING: The brass components 22.
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.)
Make sure your extension cord is in a.
good condition.
Be sure to use an extension cord b.
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.
Industrial applications must follow 17.
OSHA guidelines.
Maintain labels and nameplates 18.
on the compressor. These carry
important safety information. If
unreadable or missing, contact
Harbor Freight Tools for a
replacement.
This product is not a toy. Keep it out 19.
of reach of children.
Operate unit on level surface. Check 20.
oil level daily and ll to marked level if
needed.
People with pacemakers should 21.
consult their physician(s) before
use. Electromagnetic elds in close
proximity to heart pacemaker could
The warnings, precautions, 23.
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
Page 6 For technical questions, please call 1-800-444-3353. SKU 67847
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