Harbor Freight Tools Paint Sprayer 92857 User Manual

1 Liter Abrasive Blast Gun  
Item 92857  
Read this material before using this product.  
Failure to do so can result in serious injury.  
SAVE THIS MANUAL.  
When unpacking, make sure that the product is intact and undamaged.  
If any parts are missing or broken, please call 1-800-444-3353 as soon as possible.  
©
®
Copyright 2005 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.  
Manual Revised 11g  
 
and release the throttle and/or turn the switch to  
its off position before leaving the work area.  
Symbols and Specific Safety Instructions  
c. 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.  
Symbol Definitions  
Symbol  
Property or statement  
d. 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.  
No-load speed  
n
o
Revolutions or reciprocation per minute  
Pounds per square inch of pressure  
Foot-pounds of torque  
.../min  
PSI  
There is a risk of bursting if the tool is damaged.  
e. 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.  
ft-lb  
Blows per minute  
BPM  
CFM  
SCFM  
NPT  
Service  
a. Tool service must be performed only  
Cubic Feet per Minute flow  
Cubic Feet per Minute flow  
at standard conditions  
by qualified repair personnel.  
b. When servicing a tool, use only identical  
National pipe thread, tapered  
replacement parts. Use only authorized parts.  
National pipe thread, straight  
Air Source  
NPS  
WARNING marking  
concerning Risk of Eye Injury.  
Wear ANSI-approved eye protection.  
a.  
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.  
WARNING marking concerning Risk of  
Hearing Loss. Wear hearing protection.  
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.  
WARNING marking concerning  
Risk of Respiratory Injury. Wear  
NIOSH-approved dust mask/respirator.  
WARNING marking concerning  
Risk of Explosion.  
b. WARNING! Do not exceed 145 PSI  
working air pressure during use.  
c. 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.  
SAVE THESE  
INSTRUCTIONS.  
SKU 92857  
For technical questions, please call 1-800-444-3353.  
Page 3  
 
to reduce crystalline silica exposures in the workplace  
and prevent silicosis and silicosis related deaths.  
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  
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.  
product, but must be supplied by the operator.  
2. Do not exceed maximum 145 PSI.  
3. Avoid unintentional starting. Prepare to  
begin work before turning on the tool.  
2. Conduct air monitoring to measure worker exposures.  
4. Do not leave the tool unattended when it is plugged  
into a compressor. Release the Trigger, and unplug  
it from its pneumatic air source before leaving.  
3. Use containment methods such as blast-cleaning  
machines and cabinets to control the hazard  
and protect adjacent workers from exposure.  
5. Never point the Trigger at a human or an animal.  
4. Practice good personal hygiene to avoid  
unnecessary exposure to silica dust.  
6. Use clamps (not included) or other  
practical ways to secure and support  
the workpiece to a stable platform.  
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.  
7. This product is not a toy. Keep it  
out of reach of children.  
6. Use respiratory protection when source controls  
cannot keep silica exposures below the NIOSH REL.  
8. 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.)  
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. 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.)  
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)  
10. Obey the manual for the air compressor  
used to power this tool.  
11. Install an in-line shutoff valve to allow  
immediate control over the air supply in an  
emergency, even if a hose is ruptured.  
11. 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  
12. If any abnormal vibration occurs,  
stop use immediately.  
product, but must be supplied by the operator.  
Silicosis and Aluminum  
Oxide Warnings  
SAVE THESE  
INSTRUCTIONS.  
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  
Page 4  
For technical questions, please call 1-800-444-3353.  
SKU 92857  
 
3. Attach an air hose to the compressor’s air outlet.  
Connect the air hose to the air inlet of the tool.  
Other components, such as a coupler plug  
and quick coupler, will make operation  
Functional Description  
more efficient, but are not required.  
Specifications  
WARNING! TO PREVENT SERIOUS INJURY  
FROM ACCIDENTAL OPERATION:  
Do not install a female quick coupler on the tool.  
Such a coupler contains an air valve that will  
allow the air tool to retain pressure and operate  
accidentally after the air supply is disconnected.  
Max. Air Pressure  
Air Inlet  
145 PSI  
1/4 IN. - 18 NPT  
Container Capacity 1 Liter  
Air Consumption  
6 CFM @ 90 PSI  
Note: Air flow, and therefore tool performance, can  
Initial Tool Set Up/Assembly  
be hindered by undersized air supply components.  
4. The air hose must be long enough to reach  
the work area with enough extra length to  
allow free movement while working.  
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.  
5. Close the in-line shutoff valve between  
the compressor and the tool.  
Note: For additional information regarding the  
parts listed in the following pages, refer to the  
Assembly Diagram near the end of this manual.  
6. Turn on the air compressor according to  
the manufacturer’s directions and allow it  
to build up pressure until it cycles off.  
Note: This air tool may be shipped with  
a protective plug covering the air inlet.  
Remove this plug before set up.  
7. 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. Adjust  
the pressure gradually, while checking the air  
output gauge to set the right pressure range.  
Air Supply Setup  
8. Inspect the air connections for leaks.  
Repair any leaks found.  
TO PREVENT SERIOUS INJURY  
FROM EXPLOSION:  
Use only clean, dry, regulated, compressed  
air to power this tool. Do not use oxygen,  
carbon dioxide, combustible gases, or any other  
bottled gas as a power source for this tool.  
9. If the tool will not be used at this time, turn off and  
detach the air supply and safely discharge any  
residual air pressure to prevent accidental operation.  
Note: Residual air pressure should not be present after  
the tool is disconnected from the air supply. However, it  
is a good safety measure to attempt to discharge the tool  
in a safe fashion after disconnecting to ensure that the  
tool is disconnected and unpowered.  
1. To attach a grit supply hose - 1/4 IN - 18 NPT  
(not included) to the Abrasive Blast Gun, wrap  
approximately 3” of pipe thread sealer tape (not  
included) around the male threads at the end of  
the grit supply hose. Then, firmly tighten the grit  
supply hose onto the Air Inlet of the Blast Gun.  
2. Incorporate a filter, regulator with pressure gauge,  
oiler, in-line shutoff valve, and quick coupler for  
best service, as shown on Figure A on page 6  
and Figure B on page 7. An in-line shutoff  
ball valve is an important safety device because  
it controls the air supply even if the air hose  
is ruptured. The shutoff valve should be a  
ball valve because it can be closed quickly.  
Note: If an automatic oiler system is not used,  
add a few drops of Pneumatic Tool Oil to the  
airline connection before operation. Add a few  
more drops after each hour of continual use.  
SKU 92857  
For technical questions, please call 1-800-444-3353.  
Page 5  
 
Page 6  
For technical questions, please call 1-800-444-3353.  
SKU 92857  
 
SKU 92857  
For technical questions, please call 1-800-444-3353.  
Page 7  
 
General Operating Instructions  
Operating Instructions  
1. If possible, place the workpiece inside a sandblast  
cabinet (not included). Otherwise, isolate the  
workpiece to make sure no damage can occur to  
nearby walls, tools, equipment, or other property.  
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.  
2. Fill the Container (3) with 1 liter of clean, dry blasting  
media. Walnut Shells (SKU 92155 and 92150)  
or aluminum oxide (SKU 99945) are available at  
Harbor Freight Tools. WARNING! Do not use sand  
as blasting media as sand may clog blast gun and  
damage the nozzle. Do not reuse blasting media.  
Inspect tool before use, looking  
for damaged, loose, and missing  
parts. If any problems are found,  
do not use tool until repaired.  
3. Place the Gun Body (1) on top of the Container and  
turn clockwise until fastened securely.  
Tool Set Up  
NOTE: To keep the beads from accidentally spilling  
out, do not point the Gun Body downward.  
TO PREVENT SERIOUS INJURY FROM  
4. Connect the compressor’s air hose to the Gun  
Body. Turn the compressor’s regulator to between  
90-145 PSI. WARNING! Do not exceed 145 PSI.  
ACCIDENTAL OPERATION:  
Detach the air supply and safely discharge any  
residual air pressure in the tool before performing  
any inspection, maintenance, or cleaning procedures.  
5. Turn on the compressor and grip the Blast Gun firmly  
with both hands.  
TO PREVENT SERIOUS INJURY:  
Do not adjust or tamper with any control or  
component in a way not specifically explained  
within this manual. Improper adjustment can  
result in tool failure or other serious hazards.  
NOTE: Test the spray pattern and intensity of  
the Blast Gun on a piece of scrap material.  
6. Aim the Gun Body toward the object that  
is to be sandblasted. Then squeeze the  
trigger to turn on the Blast Gun.  
Work Piece and  
Work Area Set Up  
1. Designate a work area that is clean and well-lit.  
The work area must not allow access by children  
or pets to prevent distraction and injury.  
7. Adjust the flow of abrasive media by  
turning the knurled adjustment ring on the  
nozzle. Turn clockwise to reduce flow and  
counterclockwise to increase flow.  
8. Use the Hook (4) to hang the Blast Gun  
during use, if desired. WARNING! Do not  
leave Blast Gun hanging unattended.  
2. Route the air hose along a safe route to reach  
the work area without creating a tripping hazard  
or exposing the air hose to possible damage.  
The air hose must be long enough to reach  
the work area with enough extra length to  
allow free movement while working.  
9. To refill the Container, release pressure on the  
trigger. Turn off the air compressor and squeeze  
the Trigger once again to release any compressed  
air. Then twist off Container and refill.  
3. There must not be hazardous objects (such  
as utility lines or foreign objects) nearby that  
will present a hazard while working.  
10. When finished using the Blast Gun, release pressure  
on the trigger. Turn off the air compressor. Squeeze  
the trigger once to release any compressed air.  
Disconnect the Blast Gun from its air supply.  
CAUTION! Prior to sandblasting, protect other  
people (and property) in the work area from  
flying debris by providing barriers or shields.  
Always wear appropriate clothing and safety  
gear when operating the Abrasive Blast Gun.  
NOTE: Always dispose of used abrasive bead  
media according to local solid waste guidelines.  
11. Clean, then store the tool indoors  
out of children’s reach.  
Page 8  
For technical questions, please call 1-800-444-3353.  
SKU 92857  
 
using only pneumatic tool oil. Lubricate the internal  
mechanism using only white lithium grease. Other  
lubricants may damage the mechanism and may be  
highly flammable, causing an explosion.  
User-Maintenance Instructions  
Procedures not specifically explained  
in this manual must be performed  
only by a qualified technician.  
Cleaning, Maintenance,  
and Lubrication  
Note: These procedures are in addition to the  
regular checks and maintenance explained as part  
of the regular operation of the air-operated tool.  
TO PREVENT SERIOUS INJURY FROM  
ACCIDENTAL OPERATION:  
Detach the air supply and safely discharge any  
residual air pressure in the tool before performing  
any inspection, maintenance, or cleaning procedures.  
1. BEFORE EACH USE, inspect the general condition  
of the tool. Check for loose screws, misalignment  
or binding of moving parts, clogged Nozzle,  
TO PREVENT SERIOUS INJURY  
FROM TOOL FAILURE:  
Do not use damaged equipment.  
If abnormal noise, vibration, or leaking air occurs,  
have the problem corrected before further use.  
damaged supply hose, cracked or broken parts,  
and any other condition that may affect its safe  
operation. Do not use damaged equipment.  
2. AFTER USE, clean external surfaces of tool with a  
clean, most cloth. If necessary, use a mild detergent.  
WARNING! Do not use solvents or immerse in  
liquids, as damage to Blast Gun may occur.  
TO PREVENT SEROUS INJURY  
FROM EXPLOSION:  
Lubricate the tool only with  
specified lubricants. Lubricate the air inlet  
3. Store in a dry, secure area out of reach of children.  
Troubleshooting  
Problem  
Possible Causes  
Likely Solutions  
1. Turn compressor on.  
Tool will not start. 1. Compressor not on.  
2. Air line not connected properly. 2. Check that air line is connected.  
Blast flow surges / Air pressure too low.  
Excessive abrasive  
Increase air pressure.  
consumption.  
Clogging and  
plugging of  
blast flow.  
Excessive debris in abrasive.  
Purge and filter abrasive.  
Lack of abrasive  
flow.  
1. Container empty.  
1. Fill Container.  
2. Moisture in abrasive  
3. Not enough air pressure.  
4. Air hose kinked.  
2. Use dry abrasive.  
3. Increase air pressure.  
4. Un-kink air hose.  
5. Excessive debris in abrasive. 5. Clean or filter abrasive.  
Follow all safety precautions whenever diagnosing or  
servicing the tool. Disconnect air supply before service.  
SKU 92857  
For technical questions, please call 1-800-444-3353.  
Page 9  
 
Parts List and Assembly Diagram  
Part  
Description  
Qty  
1
2
3
4
Gun Body  
1
1
1
1
Nozzle  
Container  
Hook  
4
1
2
3
Page 10  
For technical questions, please call 1-800-444-3353.  
SKU 92857  
 
Limited 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 this product is free from defects in materials and workmanship  
for the period of 90 days from the date of purchase. This warranty does not apply to damage due directly or  
indirectly, to misuse, abuse, negligence or accidents, repairs or alterations outside our facilities, criminal activity,  
improper installation, 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.  
PLEASE READ THE FOLLOWING CAREFULLY  
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.  
Record Product’s Serial Number Here:  
Note: If product has no serial number, record month and year of purchase instead.  
Replacement parts are not available for this item.  
SKU 92857  
For technical questions, please call 1-800-444-3353.  
Page 11  
 
3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • (800) 444-3353  
 

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