Harbor Freight Tools 68893 Product manual
Owner’s Manual & Safety Instructions
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.
Visit our website at: http://www.harborfreight.com
REV 14l
When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
please call 1-888-866-5797 as soon as possible.
Copyright© 2011 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.
Email our technical support at: productsupport@harborfreight.com
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.
Table of Contents
Safety ......................................................... 2
Specifications ............................................. 6
Setup .......................................................... 7
SAFETY OPERATION MAINTENANCESETUP
Operation ................................................... 14
This is the safety alert symbol. It is used to alert you to potential personal injury hazards.
Maintenance .............................................. 16
Parts List and Diagram .............................. 18
Warranty .................................................... 20
WARNING SYMBOLS AND DEFINITIONS
Obey all safety messages that follow this symbol to avoid possible injury or death.
Indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
Addresses practices not related to personal injury.
IMPORTANT SAFETY INSTRUCTIONS
INSTRUCTIONS PERTAINING TO A RISK OF FIRE,
ELECTRIC SHOCK, OR INJURY TO PERSONS
WARNING – When using tools, basic precautions should always be followed, including the following:
General
To reduce the risks of electric shock,
fire, and injury to persons, read all the
instructions before using the tool.
Work Area
1. Keep the work area clean and well lighted.
Cluttered benches and dark areas increase the
risks of electric shock, fire, and injury to persons.
3. Keep bystanders, children, and visitors away
while operating the tool. Distractions are able
to result in the loss of control of the tool.
2. Do not operate the tool in explosive atmospheres,
such as in the presence of flammable liquids,
gases, or dust. The tool is able to create sparks
resulting in the ignition of the dust or fumes.
Page 2 For technical questions, please call 1-888-866-5797. Item 68893
Personal Safety
1. Stay alert. Watch what you are doing and
use common sense when operating the tool.
Do not use the tool while tired or under the
influence of drugs, alcohol, or medication.
A moment of inattention while operating the
tool increases the risk of injury to persons.
2. Dress properly. Do not wear loose
clothing or jewelry. Contain long hair.
Keep hair, clothing, and gloves away from
moving parts. Loose clothes, jewelry, or long
hair increases the risk of injury to persons as
a result of being caught in moving parts.
3. Avoid unintentional starting. Be sure
the trigger is released before connecting
to the air supply. Do not connect the tool
to the air supply with the switch on.
4. Remove adjusting keys and wrenches
before turning the tool on. A wrench or a
key that is left attached to a rotating part of the
tool increases the risk of personal injury.
Tool Use and Care
5. Do not overreach.
Keep proper footing and balance at all times.
Proper footing and balance enables better
control of the tool in unexpected situations.
6. Use safety equipment. A dust mask,
non-skid safety shoes and a hard hat
must be used for the applicable
conditions.
7.
Always wear eye protection.
Wear ANSI-approved safety goggles.
8.
Always wear hearing protection
when using the tool.
Prolonged exposure to high intensity
noise is able to cause hearing loss.
SAFETYOPERATIONMAINTENANCE SETUP
1. Use clamps or another practical way to secure
and support the workpiece to a stable platform.
Holding the work by hand or against the body is
unstable and is able to lead to loss of control.
2. Do not force the tool. Use the correct tool for the
application. The correct tool will do the job better
and safer at the rate for which the tool is designed.
3. Do not use the tool if the switch does not turn the
tool on or off. Any tool that cannot be controlled
with the switch is dangerous and must be repaired.
4. Disconnect the tool from the air source
before making any adjustments, changing
accessories, or storing the tool. Such preventive
safety measures reduce the risk of starting the
tool unintentionally. Turn off and detach the air
supply, safely discharge any residual air pressure,
and release the throttle and/or turn the switch to
its off position before leaving the work area.
5. Store the tool when it is idle out of reach
of children and other untrained persons.
A tool is dangerous in the hands of untrained users.
6. Maintain the tool with care.
7. Check for misalignment or binding of moving
parts, breakage of parts, and any other condition
that affects the tool's operation. If damaged,
have the tool serviced before using. Many accidents
are caused by poorly maintained tools.
There is a risk of bursting if the tool is damaged.
8. Use only accessories that are identified by the
manufacturer for the specific tool model. Use of
an accessory not intended for use with the specific
tool model, increases the risk of injury to persons.
Page 3For technical questions, please call 1-888-866-5797.Item 68893
Service
1. Tool service must be performed only
by qualified repair personnel.
SAFETY OPERATION MAINTENANCESETUP
Air Source
1. Never connect to an air source that is
capable of exceeding 200 psi.
Over pressurizing the tool may cause
bursting, abnormal operation, breakage
of the tool or serious injury to persons.
Use only clean, dry, regulated compressed air at the
rated pressure or within the rated pressure range as
marked on the tool. Always verify prior to using the
tool that the air source has been adjusted to the rated
air pressure or within the rated air-pressure range.
SAVE THESE INSTRUCTIONS.
Symbols and Specific Safety Instructions
Symbol Definitions
2. When servicing a tool, use only identical
replacement parts. Use only authorized parts.
2. Never use oxygen, carbon dioxide, combustible
gases or any bottled gas as an air source
for the tool. Such gases are capable of
explosion and serious injury to persons.
Symbol Property or statement
PSI
ft-lb
NPT
Pounds per square inch of pressure
Foot-pounds of torque
National pipe thread, tapered
WARNING marking
concerning Risk of Eye Injury.
Wear ANSI-approved eye protection.
Specific Safety Instructions
1. The warnings and precautions discussed in this
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.
2. WARNING: This product, when used for abrasive
blasting and similar applications, produces chemicals
known to the State of California to cause cancer
and birth defects or other reproductive harm.
(California Health & Safety Code § 25249.5, et seq.)
Symbol Property or statement
WARNING marking concerning Risk of
Hearing Loss. Wear hearing protection.
WARNING marking concerning
Risk of Respiratory Injury. Wear
NIOSH-approved dust mask/respirator.
WARNING marking concerning
Risk of Explosion.
3. WARNING: The brass components of this product
contain lead, a chemical known to the State
of California to cause cancer and birth defects
or other reproductive harm. (California Health
& Safety Code § 25249.5, et seq.)
4. WARNING: This product contains di (2-ethylhexyl)
phthalate (DEHP), a chemical known to the State
of California to cause cancer and birth defects
or other reproductive harm. (California Health
& Safety Code § 25249.5, et seq.)
5. Obey the manual for the air compressor
used to power this tool.
6. Install an in-line shutoff valve to allow
immediate control over the air supply in an
emergency, even if a hose is ruptured.
Page 4 For technical questions, please call 1-888-866-5797. Item 68893
Assembly Precautions
1. Assemble only according to these instructions.
Improper assembly can create hazards.
2. Wear ANSI-approved safety goggles and
heavy-duty work gloves during assembly.
3. Keep assembly area clean and well lit.
4. Keep bystanders out of the area during assembly.
5. Do not assemble when tired or when under
the influence of drugs or medication.
Silicosis and Aluminum Oxide Warnings
WARNING! Abrasive blasting with sand containing
crystalline silica can cause serious or fatal respiratory
disease. Exposure to crystalline silica may cause
silicosis (a serious lung disease), cancer and death.
Exposure to aluminum oxide (a dust generated from
material removing processes) can result in eye, skin
and breathing irritation. Always use a NIOSH (National
Institute for Occupational Safety and Health) approved
respirator and safety goggles. Avoid skin exposure.
Proper ventilation in the work area is required. Read
and understand the 10 recommended measures below
to reduce crystalline silica exposures in the workplace
and prevent silicosis and silicosis related deaths.
NIOSH recommends the following measures to
reduce crystalline silica exposures in the workplace
and prevent silicosis and silicosis-related deaths:
1. Prohibit silica sand (or other substances
containing more than 1% crystalline silica)
as an abrasive blasting material and
substitute less hazardous materials.
2. Conduct air monitoring to measure worker exposures.
3. Use containment methods such as blast-cleaning
machines and cabinets to control the hazard
and protect adjacent workers from exposure.
4. Practice good personal hygiene to avoid
unnecessary exposure to silica dust.
5. Wear washable or disposable protective clothes
at the work site. Shower and change into clean
clothes before leaving the work site to prevent
contamination of cars, homes and other work areas.
6. Use respiratory protection when source controls
cannot keep silica exposures below the NIOSH REL.
7. Provide periodic medical examinations for all
workers who may be exposed to crystalline silica.
8. Post signs to warn workers about the hazard and to
inform them about required protective equipment.
9. Provide workers with training that includes
information about health effects, work practices
and protective equipment for crystalline silica.
10. Report all cases of silicosis to State health
departments and to OSHA or the Mine Safety
and Health Administration (MSHA).
SAFETYOPERATIONMAINTENANCE SETUP
Vibration Precautions
This tool vibrates during use. Repeated or long-term
exposure to vibration may cause temporary or permanent
physical injury, particularly to the hands, arms and
shoulders. To reduce the risk of vibration-related injury:
1. Anyone using vibrating tools regularly or for an
extended period should first be examined by a
doctor and then have regular medical check-ups to
ensure medical problems are not being caused or
worsened from use. Pregnant women or people who
have impaired blood circulation to the hand, past
hand injuries, nervous system disorders, diabetes,
or Raynaud's Disease should not use this tool.
If you feel any symptoms related to vibration (such
as tingling, numbness, and white or blue fingers),
seek medical advice as soon as possible.
SAVE THESE INSTRUCTIONS.
2. Do not smoke during use. Nicotine reduces
the blood supply to the hands and fingers,
increasing the risk of vibration-related injury.
3. Use tools with the lowest vibration
when there is a choice.
4. Include vibration-free periods each day of work.
5. Grip tool as lightly as possible (while still keeping
safe control of it). Let the tool do the work.
6. To reduce vibration, maintain
tool as explained in this manual.
If abnormal vibration occurs, stop immediately.
Page 5For technical questions, please call 1-888-866-5797.Item 68893
Functional Description
Specifications
SAFETY OPERATION MAINTENANCESETUP
Average Air Consumption 9.5 CFM @ 90 PSI
Maximum Working Pressure 125 PSI
Air Inlet 1/4″ -18 NPT
Abrasive Capacity 40 lb.
Dust Port 2-1/2" OD
Viewing Window 21" W x 10" H
Working Area 33-1/2" W x 22" D x 18" H
Overall Dimensions 36-1/2" W x 23" D x 54-1/2" H
Included Nozzles 0.18″, 0.19″, 0.22″ , 0.27″
Components and Controls
Dust Port (22)
(on left side of Cabinet)
Gloves (41)
Latch (12)
Door (13)
Hose Inlet Fitting (45)
Funnel (6,7)
Funnel Mouth (5)
Handle (3)
Figure A: Components and Controls
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