®
HVLP ELECTRIC PAINT SPRAYER
91772
ASSEMBLY AND OPERATING INSTRUCTIONS
TO PREVENT SERIOUS INJURY,
READ AND UNDERSTAND ALL WARNINGS
AND INSTRUCTIONS BEFORE USE.
3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit our Web site at: http://www.harborfreight.com
®
Copyright 2004 by Harbor Freight Tools
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, please call 1-800-444-3353.
. All rights reserved. No portion of this
PRODUCT SPECIFICATIONS
Motor 115 V, 60 Hz, 450 Watt, Single Phase
Maximum Pressure 2-5 PSI
Air Intake 1500 Liters Per Minute
Hose Twist Lock O-ring Connection, 7 Ft. Long
Includes: Viscosity Cup, Small Inflator, Shoulder Carry Strap,
1 Liter Paint Cup.
SAVE THIS MANUAL
You will need this manual for the safety warnings and precautions, assembly,
operating, inspection, maintenance and cleaning procedures, parts list and assembly diagram. Keep your invoice with this manual. Write the invoice number
on the inside of the front cover. Keep this manual and invoice in a safe and dry
place for future reference.
GENERAL SAFETY RULES
WARNING!
READ AND UNDERSTAND ALL INSTRUCTIONS
Failure to follow all instructions listed below may result in
electric shock, fire, and/or serious injury.
SAVE THESE INSTRUCTIONS
WORK AREA
1. Keep your work area clean and well lit. Cluttered benches and dark areas
invite accidents.
2. Do not operate power tools in explosive atmospheres, such as in the
presence of flammable liquids, gases, or dust. Power tools create sparks
which may ignite the dust or fumes.
3. Keep bystanders, children, and visitors away while operating a power tool.
Distractions can cause you to lose control. Protect others in the work area from
debris such as chips and sparks. Provide barriers or shields as needed.
SKU 91772 For technical questions, please call 1-800-444-3353. Page 2
ELECTRICAL SAFETY
4. Grounded tools must be plugged into an outlet properly installed and
grounded in accordance with all codes and ordinances. Never remove the
grounding prong or modify the plug in any way. Do not use any adapter
plugs. Check with a qualified electrician if you are in doubt as to whether
the outlet is properly grounded. If the tools should electrically malfunction or
break down, grounding provides a low resistance path to carry electricity away
from the user.
5. Double insulated tools are equipped with a polarized plug (one blade is
wider than the other). This plug will fit in a polarized outlet only one way. If
the plug does not fit fully in the outlet, reverse the plug. If it still does not
fit, contact a qualified electrician to install a polarized outlet. Do not
change the plug in any way. Double insulation
three wire grounded power cord and grounded power supply system.
6. Avoid body contact with grounded surfaces such as pipes, radiators,
ranges, and refrigerators. There is an increased risk of electric shock if your
body is grounded.
eliminates the need for the
7. Do not expose power tools to rain or wet conditions. Water entering a power
tool will increase the risk of electric shock.
8. Do not abuse the Power Cord. Never use the Power Cord to carry the tools
or pull the Plug from an outlet. Keep the Power Cord away from heat, oil,
sharp edges, or moving parts. Replace damaged Power Cords immediately. Damaged Power Cords increase the risk of electric shock.
9. When operating a power tool outside, use an outdoor extension cord
marked “W-A” or “W”. These extension cords are rated for outdoor use, and
reduce the risk of electric shock.
PERSONAL SAFETY
10. Stay alert. Watch what you are doing, and use common sense when operating a power tool. Do not use a power tool while tired or under the influence of drugs, alcohol, or medication. A moment of inattention while operat-
ing power tools may result in serious personal injury.
11. Dress properly. Do not wear loose clothing or jewelry. Contain long hair.
Keep your hair, clothing, and gloves away from moving parts. Loose
clothes, jewelry, or long hair can be caught in moving parts.
SKU 91772 For technical questions, please call 1-800-444-3353. Page 3
12. Avoid accidental starting. Be sure the Power Switch is off before plugging
in. Carrying power tools with your finger on the Power Switch, or plugging in
power tools with the Power Switch on, invites accidents.
13. Remove adjusting keys or wrenches before turning the power tool on. A
wrench or a key that is left attached to a rotating part of the power tool may result
in personal injury.
14. Do not overreach. Keep proper footing and balance at all times. Proper
footing and balance enables better control of the power tool in unexpected
situations.
15. Use safety equipment. Always wear ANSI-approved eye protection, face
mask/respirator and protective clothing while spraying.
TOOL USE AND CARE
16. Use clamps (not included) or other practical ways to secure and support
the workpiece to a stable platform. Holding the work by hand or against your
body is unstable and may lead to loss of control.
17. Do not force the tool. Use the correct tool for your application. The correct
tool will do the job better and safer at the rate for which it is designed.
18. Do not use the power tool if the Power Switch does not turn it on or off.
Any tool that cannot be controlled with the Power Switch is dangerous and must
be replaced.
19. Disconnect the Power Cord Plug from the power source before making any
adjustments, changing accessories, or storing the tool. Such preventive
safety measures reduce the risk of starting the tool accidentally.
20. Store idle tools out of reach of children and other untrained persons. Tools
are dangerous in the hands of untrained users.
21. Maintain tools with care. Keep tools clean. Do not use a damaged tool. Tag
damaged tools “Do not use” until repaired.
22. Check for misalignment or binding of moving parts, breakage of parts, and
any other condition that may affect the tool’s operation. If damaged, have
the tool serviced before using. Many accidents are caused by poorly main-
tained tools.
SKU 91772 For technical questions, please call 1-800-444-3353. Page 4
23. Use only accessories that are recommended by the manufacturer for your
model. Accessories that may be suitable for one tool may become hazardous
when used on another tool.
SERVICE
24. Tool service must be performed only by qualified repair personnel. Service
or maintenance performed by unqualified personnel could result in a risk of injury.
25. When servicing a tool, use only identical replacement parts. Follow
instructions in the
manual. Use of unauthorized parts or failure to follow maintenance instructions
may create a risk of electric shock or injury.
“Inspection, Maintenance, And Cleaning”
section of this
SPECIFIC SAFETY RULES
1. Maintain labels and nameplates on the Sprayer. These carry important infor-
mation. If unreadable or missing, contact Harbor Freight Tools for a replacement.
2. Maintain a safe working environment. Keep the work area well lit. Make sure
there is adequate surrounding workspace. Always keep the work area free of
obstructions, grease, oil, trash, and other debris. Do not use a power tool in areas
near flammable chemicals, dusts, and vapors. Do not use this product in a damp
or wet location.
3. Always keep the extension cord away from moving parts on the tool.
4. Always spray in a well ventilated area to prevent health and fire hazards.
5. Never spray flammable materials near open flames or ignition sources.
Electrical arcs from motorized equipment can ignite flammable materials.
6. Spray approved materials only. Never spray corrosive materials, acids, toxic
chemicals, fertilizers, pesticides, or highly flammable materials such as gasoline,
kerosene etc.
7. Never leave the Sprayer unattended when it is plugged into an electrical
outlet. Turn off the tool, and unplug it from its electrical outlet before
leaving.
8. Always unplug the Sprayer from its electrical outlet before performing and
inspection, maintenance, or cleaning procedures.
9. Never spray towards people or animals.
10. Always mask the area surrounding the paint site to protect surrounding
property and equipment from paint overspray.
SKU 91772 For technical questions, please call 1-800-444-3353. Page 5
11. 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.
)
12. WARNING! People with pacemakers should consult their physician(s) before
using this product. Electromagnetic fields in close proximity to a heart pacemaker
could cause interference to or failure of the pacemaker.
REV 11/06
SKU 91772 For technical questions, please call 1-800-444-3353. Page 6
GROUNDING
WARNING!
Improperly connecting the grounding wire can result in the risk of electric
shock. Check with a qualified electrician if you are in doubt as to whether the
outlet is properly grounded. Do not modify the power cord plug provided with
the tool. Never remove the grounding prong from the plug. Do not use the
tool if the power cord or plug is damaged. If damaged, have it repaired by
a service facility before use. If the plug will not fit the outlet, have a proper
outlet installed by a qualified electrician.
GROUNDED TOOLS: TOOLS WITH THREE PRONG PLUGS
1. Tools marked with “Grounding Required” have a three wire cord and three prong
grounding plug. The plug must be connected to a properly grounded outlet. If
the tool should electrically malfunction or break down, grounding provides a low
resistance path to carry electricity away from the user, reducing the risk of electric shock. (See Figure A.)
2. The grounding prong in the plug is connected through the green wire inside the
cord to the grounding system in the tool. The green wire in the cord must be the
only wire connected to the tool’s grounding system and must never be attached
to an electrically “live” terminal. (See Figure A.)
3. Your tool must be plugged into an appropriate outlet, properly installed and
grounded in accordance with all codes and ordinances. The plug and outlet
should look like those in the following illustration. (See Figure A.)
FIGURE A
SKU 91772 For technical questions, please call 1-800-444-3353. Page 7
DOUBLE INSULATED TOOLS: TOOLS WITH TWO PRONG PLUGS
4. Tools marked “Double Insulated” do not require grounding. They have a special
double insulation system which satisfies OSHA requirements and complies with
the applicable standards of Underwriters Laboratories, Inc., the Canadian
Standard Association, and the National Electrical Code. (See Figure B.)
5. Double insulated tools may be used in either of the 120 volt outlets shown in the
following illustration. (See Figure B.)
FIGURE B
EXTENSION CORDS
1.
2. As the distance from the supply outlet increases, you must use a heavier gauge
3. The smaller the gauge number of the wire, the greater the capacity of the cord.
4. When using more than one extension cord to make up the total length, make
Grounded
can use either a two or three wire extension cord.
extension cord. Using extension cords with inadequately sized wire causes a
serious drop in voltage, resulting in loss of power and possible tool damage.
(See Figure C,
For example, a 14 gauge cord can carry a higher current than a 16 gauge cord.
(See Figure C.)
sure each cord contains at least the minimum wire size required.
(See Figure C.)
tools require a three wire extension cord.
next page.)
Double Insulated
tools
5. If you are using one extension cord for more than one tool, add the nameplate
amperes and use the sum to determine the required minimum cord size.
(See Figure C.)
SKU 91772 For technical questions, please call 1-800-444-3353. Page 8
6. If you are using an extension cord outdoors, make sure it is marked with the
suffix “W-A” (“W” in Canada) to indicate it is acceptable for outdoor use.
7. Make sure your extension cord is properly wired and in good electrical condition.
Always replace a damaged extension cord or have it repaired by a qualified
electrician before using it.
8. Protect your extension cords from sharp objects, excessive heat, and damp or
wet areas.
RECOMMENDED MINIMUM WIRE GAUGE FOR EXTENSION CORDS*
(120 VOLT)
NAMEPLATE
AMPERES
(At Full Load)
25 FEET 50 FEET 75 FEET 100 FEET 150 FEET
0 - 2.0 18 18 16 16 16
2.1 - 3.4 18 18 16 14 14
3.5 - 5.0 18 18 16 14 12
5.1 - 7.0 18 16 14 12 12
7.1 - 12.0 16 14 12 10 -
12.1 - 16.0 14 12 10 - -
16.1 - 20.0 12 10 - - -
EXTENSION CORD LENGTH
FIGURE C
*Based on limiting the line voltage drop
to five volts at 150% of the rated amperes.
SYMBOLOGY
Double Insulated
Canadian Standards
Association
Underwriters
Laboratories, Inc.
V ~
A
n
o
xxxx/min.
Volts Alternating Current
Amperes
No Load Revolutions
per Minute (RPM)
SKU 91772 For technical questions, please call 1-800-444-3353. Page 9
UNPACKING
When unpacking, check to make sure all the parts shown on the Parts List on page 14
are included. If any parts are missing or broken, please call Harbor Freight Tools at the
number shown on the cover of this manual as soon as possible.
ASSEMBLY AND OPERATING INSTRUCTIONS
NOTE: For additional information regarding the parts listed in the following pages, refer
to the
Assembly Diagram on page 15.
CAUTION: Always make sure the Power Cord of the Sprayer is unplugged from
its electrical outlet
prior
FIGURE 1
to making any adjustments to the tool.
Paint Cup (24)
Cup Cover (19)
Gun Body (27)
Spiral Air Hose (46)
Inflator (32)
Strap (28)
Motor Unit
Viscosity Cup (33)
SKU 91772 For technical questions, please call 1-800-444-3353. Page 10
ASSEMBLY AND OPERATING INSTRUCTIONS (continued)
Refer to the Assembly Drawing on page 15 and FIGURE 1 on page 10.
Checking the Paint Viscosity
When using a HVLP (low pressure and high volume) spray gun the paint must be
thinned to the proper viscosity. Viscosity indicates whether the material is very liquid
(low viscosity) versus very thick (high viscosity). Viscosity is measured in the seconds it
takes for the paint to flow through the viscosity meter (DINs). Ask your paint sales representative, check the paint container, or contact the manufacturer to find the paint’s
viscosity value.
Note: For use only with paints, never use textures or other materials. This Sprayer
can use paints with viscosity values between 10 to 14 DINs. Most commonly used
paints fall within this range and will not need to be thinned.
of the material before using it in this Spray Gun.
To measure the viscosity of your paint, you will need the Viscosity Cup (33), a
small container, and a timepiece with a second hand. Fill the Viscosity Cup (33) with
paint (holding it over the container), and immediately begin to time how long it takes the
Viscosity Cup (33) to empty. The time it takes to empty the Viscosity Cup (33) is the
viscosity of the paint. If the paint is outside of the range (10-14 DINs), take the appropriate measures to thin it (see manufacturer’s instructions).
Always check the viscosity
Preparing the Object to be Painted.
1. Thoroughly clean the object or area that you are painting. Remove any old paint,
scaling, or rust from the surface.
2. If necessary, make the surface smooth (using sandpaper).
3. Read the instructions on the paint can to determine whether or not you need to
apply a fixative/adhesive to the surface to save paint.
Preparing the Spray Gun
1. After making sure the paint is the proper viscosity, thoroughly mix the paint.
2. Remove the Cup Cover (19) (twist counterclockwise) and fill the Paint Cup (24) to
just below the top.
3. Replace the Cup Cover (19). Twist clockwise.
4. Connect the Spray Gun to the Spiral Air Hose (46) by snapping it into place. All
connections snap into place as illustrated in FIGURE 2 below.
FIGURE 2
FIGURE 3
Attaching Gun Tray
Motor Unit
Gun Tray (41)
Spray Gun or Inflator
Spiral Air Hose (46)
REV 11/05REV 11/06
SKU 91772 For technical questions, please call 1-800-444-3353. Page 11
ASSEMBLY AND OPERATING INSTRUCTIONS (continued)
5. Secure the Spray Gun in the Gun Tray (41). If the Gun Tray (41) is not attached to the
Motor Unit, attach it as shown in FIGURE 3 on page 11.
6. To adjust the type of spray required, loosen the Lock Ring (17) and rotate the Fluid
Tip (16) for a horizontal, vertical, or round spray. Practice spraying on scrap material to get the feel of the adjustments. When finished, tighten the Lock Ring (17).
Note: Horizontal and vertical sprays are recommended for larger surfaces, and
round sprays are used for small objects or difficult to reach areas.
7. Plug in the unit.
8. Place the Strap (28) over you shoulder.
9. Turn on the Switch (31). See FIGURE 4.
10. Pointing the Spray Gun at scrap material for practice, gently squeeze the Trigger (25) to begin
spraying.
11. To adjust the paint flow, turn the Fluid Needle
Screw (1) while pulling the Trigger (25), until the correct flow is obtained.
Note: Never cover the Vent (18), and never hold the Spray Gun upside down. Covering the
vent will halt paint flow, and holding the Spray Gun upside down will spill out paint.
12. The Spray Gun should be moved with a regular motion, keeping a consistent distance from the object.
The Spray Gun must always be parallel to the surface of the
object being painted. Let go of the Trigger (25) after each pass.
Note: Avoid circular motions as they may damage the finish of the surface.
13. When you are finished, release the Trigger (25) and turn off the Switch (31).
Warning!
Air may still be in the Spiral Air Hose (46) after turning off the unit. Always point
the unit at scrap material or into a bucket and fire the unit after turning it off.
Switch (31)
FIGURE 4
Troubleshooting
Problem
The Paint Drips on
object to be painted
Weak or irregular spray
No Paint Coverage
Cause Solution
-product too diluted - add undiluted product
- spray adjustment - reduce paint flow
-slow sprayer movement - faster sprayer movement
- clogged gun - let go of Trigger when reversing
- distance problem - increase distance between gun and
object
-product too diluted - add undiluted product
- spray adjustment - increase paint flow
-fast movement - move slower
- gun clogged - clean gun
- gun distance - increase distance between
gun and object
-product not diluted enough - add thinner
- paint too thick - check viscosity and adjust
- gun clogged - clean gun
- hose broken - replace hose
- Filter (30) clogged - replace filter
- Grainy paint - filter paint through cheesecloth
- Cup Cover (19) not closed - tightly close Cup Cover (19)
SKU 91772 For technical questions, please call 1-800-444-3353. Page 12
Note: A small Inflator (32) accessory comes with this unit. To fill a raft or air mattress,
attach the inflator as shown in FIGURE 2 on page 11. When the inflator is attached to
the object being inflated, start the unit using the Switch (31). Turn off the unit when the
object is inflated. Read the instruction manual of the object to be inflated to
determine the recommended and maximum PSI for filling the object. You will have
to check the air pressure of the object by using a separate air pressure gauge (not
included). Do not overinflate. Overinflating may cause the object to explode.
INSPECTION, MAINTENANCE, AND CLEANING
1. WARNING! Make sure the Power Switch (31) of the Motor Unit is in its
“OFF” position and that the tool is unplugged from its electrical outlet before
performing any inspection, maintenance, or cleaning procedures.
2. BEFORE EACH USE, inspect the general condition of the Sprayer. Check for
loose screws, misalignment or binding of moving parts, cracked or broken parts,
damaged electrical wiring, and any other condition that may affect its safe operation. If abnormal noise or vibration occurs, have the problem corrected before
further use.
Do not use damaged equipment.
3. After each use, clean the gun immediately. Open the Cup Cover (19) and
remove the Paint Cup (24). Replace left over paint in its container and seal the
container. Pour small amounts of thinner into the Paint Cup (24) and replace the
Cup Cover (19). Fire the Spray Gun into a paint waste receptacle until the thinner comes out completely clean. Repeat if necessary. Clean off any trace of
paint from the Spray Gun. Clean off the Gasket (20) that is under the Cup Cover
(19).
4. Clean the Fluid Nozzle (15) and the Fluid Needle (4). First, unlock and remove
the Lock Ring (17), and Fluid Tip (16). Completely loosen the Fluid Needle Screw
(1). Remove the Needle Spring (2) and push out the Fluid Needle (4). Do not
use tools as they will bend the part. Put the parts in a container with thinner and
clean them. Replace them in the proper order. Refer to the Assembly Drawing
on page 15.
5. Run water through the Spiral Air Hose (46) making sure it is clean inside. Disconnect the Spiral Air Hose from spray gun or inflator and the motor unit, then allow it
to dry before reassembly.
6. Make sure the Gasket (20) on the Paint Cup (24) is not torn or broken. If it is,
replace it immediately. Always make sure the Gasket (20) is on correctly.
SKU 91772 For technical questions, please call 1-800-444-3353. Page 13
PARTS LIST
Part Description Qty. Part Description Qty.
1 Fluid Needle Screw 1 24 Paint Cup 1
2 Needle Spring 1 25 Trigger 1
3 Washer 1 26 Handle O-ring 2
4 Fluid Needle 1 27 Gun Body 1
5 Needle Cover 1 28 Strap 1
6 Needle Sealing Thread 1 29 Exhaust Cover 1
7 Gasket 2 30 Filter 1
8 Bolt 1 31 Switch 2
9 Plug 1 32 Inflator 1
10 Washer 1 33 Viscosity Cup 1
11 Pin 1 34 Cord 1
12 Washer 1 35 Pin Board 1
13 Sealing Thread Head 1 36 Front Turbine Shell Pin 1
14 Sealing Ring Head 1 37 Back Turbine Shell Pin 1
15 Fluid Nozzle 1 38 Fixed Turbine Pin 8
16 Fluid Tip 1 39 Left Turbine Shell 1
17 Lock Ring 1 40 Pad 7
18 Vent 1 41 Gun Tray 1
19 Cup Cover 1 42 Turbine O-ring 1
20 Gasket 1 43 Turbine 1
21 Inner Cover 1 44 Right Turbine Shell 1
22 Hex Thread 1 45 Combined Gun Body 1
23 Material Tube 1 46 Spiral Air Hose 1
PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND ASSEMBLY
DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY. 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.
SKU 91772 For technical questions, please call 1-800-444-3353. Page 14
ASSEMBLY DIAGRAM
NOTE: Some parts are listed and shown for illustration purposes only, and are not
available individually as replacement parts.
SKU 91772 For technical questions, please call 1-800-444-3353. Page 15
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