Harbor Freight Tools Paint Sprayer 92126 Assembly and Operating Instructions

Mini Detail Spray Gun
92126
ASSEMBLY AND OPERATING INSTRUCTIONS
3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit our Web site at http://www.harborfreight.com
Copyright© 2004 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.
For technical questions and replacement parts, please call 1-800-444-3353.
Specifications
Construction:
Cast Aluminum Body and Cup
Brass Nozzle
Features:
Adjustable nozzle
Includes:
Cleaning Brush and Wrench
Capacity:
4 oz. gravity feed cup
Operating Pressure:
20-50 psi
Air Consumption: 3 CFM @ 50 psi
Air Inlet:
1/4" NPS
Net Weight:
0.8 lb.
Save This Manual
You will need the manual for the safety warnings and precautions,
assembly instructions, operating and maintenance procedures, parts list and
diagram. Keep your invoice with this manual. Write the invoice number on the
inside of the front cover. Keep the manual and invoice in a safe and dry place for
future reference.
Safety Warnings and Precautions
WARNING: When using tool, basic safety precautions should always be followed to reduce the risk of personal injury and damage to equipment.
Read all instructions before using this tool!
1.
Keep work area clean. Cluttered areas invite injuries.
2.
Observe work area conditions. Do not use this sprayer in damp or wet
locations. Don’t expose to rain. Keep work area well lit. Do not use air
compressors in the presence of flammable gases or liquids.
3.
Keep children away. Children must never be allowed in the work area. Do
not let them handle air lines, machines, tools, paint, or extension cords.
4.
Store idle equipment. When not in use, tools must be stored in a dry location
to inhibit rust. Always lock up tools and keep out of reach of children.
5.
Use the right tool for the job. Do not attempt to force a small tool or attachment
to do the work of a larger industrial tool. There are certain applications for
which this tool was designed. It will do the job better and more safely at the
rate for which it was intended. Do not modify this tool and do not use this tool
for a purpose for which it was not intended.
6.
Dress properly. Protective, electrically nonconductive clothes and nonskid
footwear are recommended when working. Wear restrictive hair covering to
contain long hair.
7. Use eye protection. Always wear ANSI approved impact safety goggles. Wear
SKU 92126 For technical questions, please call 1-800-444-3353.
Page 2
an ANSI approved dust mask and respirator when working around paint spray,
chemical dusts and mists.
8.
Do not overreach. Keep proper footing and balance at all times. Do not reach
over or across running machines.
9.
Maintain tools with care. Keep tools maintained and clean for better and
safer performance. Follow instructions for lubricating and changing accessories.
Inspect tool cords periodically and, if damaged, have them repaired by a
qualified technician. The handle must be kept clean, dry, and free from oil and
grease at all times.
10. Disconnect power. Disconnect tool from air supply when not in use.
11. Remove adjusting keys and wrenches. Check that keys and adjusting
wrenches are removed from the tool or machine work surface before connecting
it.
12. Stay alert. Watch what you are doing, use common sense. Do not operate
any tool when you are tired.
13. Check for damaged parts. Before using any tool, any part that appears
damaged should be carefully checked to determine that it will operate properly
and perform its intended function. Check for alignment and binding of moving
parts; any broken parts or mounting fixtures; and any other condition that may
affect proper operation. Any part that is damaged should be properly repaired
or replaced by a qualified technician. Do not use the tool if the trigger does not
operate properly.
14. Replacement parts and accessories. When servicing, use only identical
replacement parts. Use of any other parts will void the warranty. Only use
accessories intended for use with this tool. Approved accessories are available
from Harbor Freight Tools.
15. Do not operate tool if under the influence of alcohol or drugs. Read warning
labels on prescriptions to determine if your judgment or reflexes are impaired
while taking drugs. If there is any doubt, do not operate the tool.
16. 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.)
17. Maintenance. For your safety, service and maintenance should be performed
regularly by a qualified technician.
18. Compressed air only. Never use compressed gas as a power source.
19. Do not spray near open flames, pilot lights, stoves, heaters, or any other
heat source. Most solvents and coatings are highly flammable, particularly
when sprayed.
SKU 92126 For technical questions, please call 1-800-444-3353.
Page 3
Warning: The warnings, cautions, 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.
Special Warnings About Paint Sprayers
Health and Safety Hazard
Nature and Cause of Hazard
Prevention of Hazard
Risk of Explosion or Fire
from Flammable Materials.
Spraying paints, solvents and thinners
mixes them with oxygen in the air. This
creates a more explosive mixture than
these materials in their fluid form. Rapid
fires and explosions of these mixtures
can cause death or severe injury as well
as significant proper ty damage.
Never spray materials near fire, flame, electrical
spark or any ignition source. Never smoke when
spraying or in the vicinity of spraying. Never smoke
unless the area has been thoroughly aired out.
Always provide good ventilation during and after
s p r ay i n g t o e l i m i n a t e a n y e n c l o s e d ex p l o s i v e
atmosphere.
Risk of Fire or Explosion
from Incompatible
Materials.
Cer tain solvents, including Methylene
Chloride and 1,1,1-Trichloroethane can
chemically react with with the Aluminum
used in this spray equipment. This can
cause an explosion which may result in
death or ser ious personal or proper ty
injur y. Other chemicals, when mixed,
may cause unpredictable results.
I n fo r m y o u r s e l f b y r e a d i n g t h e d o c u m e n t a t i o n
provided with each solvent before introducing to
the sprayer. Never spray the named solvents in
t h i s s p r a y e r. N e v e r u s e t h e s e m a t e r i a l s f o r
cleaning equipment. Never use any solvent if in
doubt of its composition or compatibility with
A l u m i n u m , o t h e r m a t e r i a l s o r t h i s s p r ay i n g
equipment.
Inhalation Hazard.
Inhaling solvents or sprayed materials
may cause severe injury to the lungs or
body, due to their chemical make up or
the fact that they may coat the interior
of the lungs.
Use an ANSI approved ventilator or face mask.
NOTE: Some face masks, such as paper filters
p r ov i d e o n l y l i m i t e d p r o t e c t i o n a g a i n s t h a r m f u l
sprays and fumes. Consult safety documentation
provided with the materials you are spraying or an
i n d u s t r i a l s a fe t y ex p e r t w h e n d e t e r m i n i n g t h e
appropriate respiratory protection.
Risk of Ejected Objects or
Sonic Injury.
Many components of this tool and any
a i r p r e s s u r e p owe r e d t o o l a r e u n d e r
significant air pressure, even after the
air supply is disconnected. A significant
r isk of injur y caused by ejected comp o n e n t s o r m a t e r i a l s d i ve r t e d b y t h e
s t r e a m o f a i r p r e s s u r e ex i s t s . H i g h
p r e s s u r e a i r e s c a p i n g s u d d e n l y m ay
cause hearing injury.
B e fo r e d o i n g a ny s e r v i c e, i n s p e c t i o n , o r
maintenance to the sprayer, dis-connect it from
the air supply. Never point the nozzle toward any
person or animal. Always wear ANSI approved
safety goggles when using or servicing this tool.
Always wear hear ing protection when using or
servicing this tool or any air pressure equipment.
Risk of Injection Injury.
Air powered spray guns operate at high
pressures and high ejection velocities.
It is possible for sprayed material to be
injected into the skin, which can result
i n s e r i o u s p e r s o n a l i n j u r y. H i g h l y
p r e s s u r i ze d s p ray s m ay d a m a g e
proper ty or injure persons.
Never point or spray toward any person or animal.
Never place your hands, fingers or any par t of your
body in front of the spray nozzle if the spray gun
is not disconnected and depressurized. Test spray
on scrap material before spraying work material.
Unpacking
When unpacking, check to make sure the following parts are included.
Mini Detail Spray Gun
Paint Cup with Lid
If any parts are missing or broken, please call Harbor Freight Tools at the
number on the cover of this manual.
SKU 92126 For technical questions, please call 1-800-444-3353.
Page 4
Assembly
First, prepare your air supply.
1.
This tool operates within a pressure range of 20 - 50 psi, and consumes 3
CFM of air at 50 psi. Provide yourself with a compressed air supply which
will meet these requirements. DO NOT EXCEED THE 50 PSI MAXIMUM.
Air compressors and related supplies are available from Harbor Freight
Tools.
2.
For best results, arrange your compressed air supply to include a filter and
regulator as indicated in the schematic diagram, below. The addition of quick
connect air valves, reel and other features will enhance your air supply.
Spray
Gun
3.
Attach your air hose (not supplied)
to the Spray Gun at the Nipple (42),
at the base of the handle. At your
option, you may first attach a quick
connect valve (not supplied) to the
Nipple (42) to attach with your air
hose.
4.
Attach the Paint Cup to Nipple (41)
on the side of the Spray Gun, as
shown in the photo.
SKU 92126 For technical questions, please call 1-800-444-3353.
Page 5
Operation
1.
Prepare the work piece to be painted according to paint manufacturer’s
directions. Prepare your paint mixture according to paint manufacturer’s
directions. NOTE: In most cases, paint must be thinned for proper spraying. Be
sure to use a thinner recommended by the paint manufacturer.
2.
Fill the Paint Cup no more than 2/3
full with your paint mixture. Press the
Cap onto the Paint Cup to hold the
paint.
3.
IMPORTANT: Before applying paint
to your work piece, test spray a piece
of scrap material. In most cases both
the paint mixture and spray pattern
will have to be adjusted for best
results.
4.
To spray, squeeze the Trigger (8), as you move the Sprayer past the work
material. Release the Trigger (8) at the end of each pass. Repeat until you
have proper paint coverage of the work piece.
5.
When you have completed painting your project, disconnect the Sprayer from
its air pressure source and clean it immediately, following the directions in the
Maintenance section on page 8.
Painting Tips
Successful spray painting is a skill which requires knowledge of your equipment, familiarity with your paint materials and experience. Differences in paints,
work materials and environmental conditions make every painting task unique. For
best results, practice with your painting mixture on a scrap piece before beginning
to paint your work material.
It is critical that the surface be properly prepared before painting. It will be
difficult to achieve a satisfactory painted surface if the original surface is dirty, rough
or wet.
Paint Mixture:
Each paint mixture will vary. You may use solvent- or water-based paints.
Each of these has a different paint viscosity, and therefore a different flow rate and
drying time. High viscosity is thick, like syrup. Low viscosity is thin, like water.
The purpose of the solvent is to make the paint liquid so it can be applied.
Once applied, the solvent evaporates, leaving the pigment and its binders in place.
SKU 92126 For technical questions, please call 1-800-444-3353.
Page 6
Paint Mixture (continued)
The solvent is also used as a clean up medium. Paint mixtures which are to be
sprayed are generally less viscous (thinner) than mixtures which are to be applied
with a brush. Thus you will most often have to add extra solvent to a paint which is
to be sprayed.
When paint is sprayed, it is broken into tiny droplets, then blown by highpressure air onto the surface. During this spraying process, the surface of each
paint droplet will begin to dry. When it hits the work material, the droplet must liquefy
again, and mix with the droplets hitting alongside it. Ideally, these droplets will mix
evenly forming a smooth surface.
If the paint mixture is too thick, the droplets will not form a smooth layer, and
the resulting surface can be described as “pebbly” or “orange peel”. If the paint
mixture is too thin, the paint will run, forming long drips before they are thick enough
to form a satisfactory coat. Vertical surfaces are more prone to “run” than horizontal
surfaces due to the effect of gravity.
Sprayer Controls:
To adjust the spray pattern, loosen the Nozzle Retainer (2) by turning it counterclockwise, then rotate the Air Nozzle (1), then retighten the Nozzle Retainer (2). For
a vertical spray pattern, the “ears” of the Air Nozzle (1) should be horizontal. For a
horizontal pattern, the “ears” should be vertical. In other words, the position of the
Air Nozzle and the spray pattern are opposite.
To control the amount of paint mixture being sprayed, adjust the Fluid Valve
Control Knob (33). Turning the Knob clockwise will reduce the amount of paint,
turning it counterclockwise will increase the amount of paint available. CAUTION:
Do not overtighten the Knob, as this will cut off the paint supply, and may damage
the Fluid Needle Seats (30). Do not remove the Fluid Adjusting Valve Assembly
(28).
To control the amount of air pressure passing through the Sprayer, adjust the
Air Valve Control Knob (40). Turning the Knob clockwise will reduce the air pressure, and turning it counterclockwise will increase the air pressure. CAUTION: Do
not overtighten the Knob, as this will cut off the air supply, and may damage the Air
Ball Valve (36). Do not remove the Air Adjusting Valve Assembly (34).
To adjust the Trigger Valve Assembly (22), turn the Trigger Valve Adjust Knob
clockwise to reduce the pressure required on the Trigger (8) to operate. Turn the
Trigger Valve Adjust Knob counterclockwise to increase the pressure required on
the Trigger (8) to operate.
SKU 92126 For technical questions, please call 1-800-444-3353.
Page 7
Applying the Paint:
In most cases, it is best to move the paint spray from side to side, overlapping the previous paint. In this way you will gradually build up the paint layer without
leaving any obvious edges.
To paint in this way, the spray pattern should be set to vertical.
It is important to prevent excess paint at the beginning and end of each
stroke. Holding the sprayer away from the work piece, squeeze the trigger to start
the spray. Then move the spray gun in to within 14-16 inches of the work piece.
Move the sprayer smoothly across the work piece, keeping a consistent distance.
At the end of each stroke, pull the sprayer away from the work piece as you release
the trigger.
As you work, carefully observe the way the paint accumulates on the work
surface. It is more important to maintain a good paint surface than to form an opaque
(thick) paint coat. You can always apply a second coat to get the coverage you want.
If the surface is ruined, however, you will have to start over with surface preparation.
If the surface does not smooth out in a few seconds after applying the paint,
your paint mixture is probably too thick. Thin your paint slightly and test on a piece
of scrap material. If the paint goes on very thin and threatens to run, stop spraying
immediately. Add more paint to your mixture to thicken the paint. Test on a piece of
scrap material before resuming work.
Maintenance
After each use, thoroughly clean the spray gun.
1.
Empty the Paint Cup of paint, and wipe it out with a clean rag.
2.
Fill the Paint Cup about halfway with the solvent appropriate for the paint used.
3.
Spray the solvent into an appropriate receptacle for proper disposal. Continue
to spray until paint in the interior of the Spray Gun is ejected and the solvent
spray is clear.
4.
Using a clean rag damp with solvent, wipe off the Spray Gun to remove paint
from the exterior.
5.
Store your paint sprayer in a clean dry place.
SKU 92126 For technical questions, please call 1-800-444-3353.
Page 8
Troubleshooting
Problem
Possible Causes
Suggested Repairs
Paint breaking, spitting,
fluttering or irregular
spray.
a) Air Nozzle cracked or worn.
b) Leak at attachment or seal.
c) Needle packing worn out.
d) Insufficient paint in cup.
e) Vent hole in paint container clogged.
a) Replace.
b) Clean threads and seal and tighten.
c) Clean, repair or replace packing.
d) Add more paint to cup.
e) Clean out vent hole.
One-sided paint
pattern.
One of the vent holes in the Air Nozzle
is clogged.
Clean the vent hole.
Small spray area.
Bore of Air Nozzle is par tially clogged.
Clean Air Nozzle.
Air pressure too high.
Reduce air pressure using the regulator in
your air pressure system, or by turning the
Air Valve Control Knob clockwise.
a) Paint mixture is too thick.
b) Insufficient air pressure.
a) Thin the paint mixture.
b) Increase the air pressure using the
regulator or the Air Valve Control Knob. Do
not exceed 50 psi.
c) Reduce the amount of paint flowing into
the sprayer by turning the Fluid Valve
Control Knob clockwise.
d) Clean the Air Nozzle.
Split Spray Pattern.
Paint spatters, does not
spray evenly.
c) Too much paint in mixture.
d) Dried paint in Air Nozzle.
a) Air Needle par tially closed.
Not enough air
pressure to spray the
paint.
b) Dried material in Air Ball Valve or Air
Nozzle.
c) Insufficient air supply.
a) Open Air Ball Valve by turning the air
Valve Control Knob counterclockwise.
b) Clean the dir ty par t.
c) Adjust the regulator in your system, or
increase air pressure. DO NOT
INCREASE PRESSURE BEYOND THE
50 PSI MAX.
Inadequate coverage.
Paint "fogs" on the
workpiece.
Air pressure too high for the viscosity of Reduce the air presure or add more paint
to the mixture to increase viscosity.
the paint mixture.
Material leaking from
Paint Cup Nipple.
a) Dried material is in threads.
b) Nipple is not tight.
a) Clean threads.
b) Tighten nipple.
Paint leaks from nozzle
when trigger is
operated.
a) Worn Fluid Needle.
b) Dried paint in Air Nozzle.
c) Loose or worn Needle Packing.
a) Replace Fluid Needle.
b) Clean Air Nozzle.
c) Tighten or replace Needle Packing.
SKU 92126 For technical questions, please call 1-800-444-3353.
Page 9
Parts List
Part
Dscription
Qty.
Part
Dscription
Qty.
1
Air Nozzle
1
22
Trigger Valve Assembly
1
2
Nozzle Retainer
1
23
Trigger Valve Bushing
1
3
Fluid Nozzle
1
24
Trigger Valve O-Ring
1
4
Body
1
25
Trigger Valve Housing
1
5
Needle Packing
1
26
Trigger Adjust Bushing
1
6
Needle Packing Screw
1
27
Trigger Valve Adjust Knob
1
7
Trigger Bearing Stud
1
28
Fluid Adjusting Valve Assembly
1
8
Trigger
1
29
Fluid Needle
1
9
Trigger Circlip
1
30
Fluid Needle Spring
2
10
Trigger Seal
1
31
Fluid Needle Spring
1
11
O-Ring
1
32
Fluid Valve Fastener
1
12
Trigger Packing
1
33
Fluid Valve Control Knob
1
13
Trigger Return Spring
1
34
Air Adjusting Valve Assembly
1
14
Air Valve Seat
1
35
Air Valve Seat
1
15
Air Valve Shank
1
36
Air Ball Valve
1
16
Air Needle Valve Assembly
1
37
Fluid Valve O-Ring
1
17
Air Needle
1
38
Air Valve Bushing
1
18
Air Needle Bushing
1
39
Air Valve Fixing Sleeve
1
19
Air Needle Spring
1
40
Air Valve Control Knob
1
20
Air Needle Spring Seat
1
41
Paint Cup Nipple
1
21
Trigger Valve Spring
1
42
Air Line Nipple
1
NOTE: Some parts are listed and shown for illustration purposes only and are not available
individually as replacement parts.
PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS DIAGRAM
IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER NOR
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.
SKU 92126 For technical questions, please call 1-800-444-3353.
Page 10
Assembly Drawing
SKU 92126 For technical questions, please call 1-800-444-3353.
Page 11