Sunex Tools SX80A User manual

SX80A 1 Rev. 05/09/03
SX80A
DELUXE
SPRAY GUN
& CUP
Operating Instructions • Warning Information • Parts Breakdown
SPECIFICATIONS
Fluid Orifice .......................................................... 1.6mm
Air Inlet: ..................................................................1/4 NPT
Air Pressure ............................................................50-70 PSI
Rec. Max. Inlet Pressure: ..............................................50 PSI

SX80A 2 Rev. 05/09/03
WARNING - FOLLOW THESE RULES FOR SAFE OPERATION!
•During cleaning and flushing, solvents
can be forcefully expelled from fluid
and air passages. Some solvents can
cause eye injury.
•Be sure all others in the area are
wearing impact-resistant eye and face protection.
•Even small projectiles can injure eyes and cause blindness.
•Air under pressure can cause severe injury. Always
shut off air supply, drain hose of air pressure and
disconnect tool from air supply when not in use,
before changing accessories or when making repairs. Nev-
er direct air at yourself or anyone else. Whipping hoses can
cause serious injury. Always check for dam-
aged or loose hoses and fittings. Never use
quick change couplings at tool. They add
weight and could fail due to vibration. Instead,
add a hose whip and connect coupling be-
tween air supply, and hose whip, or between
hose whip and leader hose. Do not exceed maximum air
inlet pressure of 50 PSI.
•Always use tool a safe distance from other people in
work area.
•Maintain tools with care. Keep tools clean and oiled
for best and safest performance. Follow instructions
for lubricating and changing accessories. Wiping or
cleaning rags and other flammable waste materials
must be placed in a tightly closed metal container
and disposed of later in the proper fashion.
•Do not wear loose or ill-fitting clothing, remove
watches and rings.
•Do not over reach. Keep proper footing and
balance at all times. Slipping, Tripping and
Falling can be a major cause of serious injury
or death. Be aware of excess hose left on the
walking or work surface.
•Do not force tool. It will do the job better and safer at
the rate for which it was designed.
•Do not abuse hoses or connectors. Never carry tool by
the hose or yank hose to disconnect from air supply.
Keep hoses from heat, oil and sharp edges. Check
hoses for weak or worn condition before each use,
making certain that all connections are secure.
•High sound levels can cause permanent
hearing loss. Protect yourself from
noise. Noise levels vary with work
surface. Wear ear protectors.
•When possible, secure work with clamps or vise so
both hands are free to operate tool.
•Repetitive work motions, awkward positions and
exposure to vibration can be harmful to hands
and arms.
•Avoid inhaling dust or handling debris from work
processes which can be harmful to your health.
•Operators and maintenance personnel must be
physically able to handle the bulk, weight and power
of this tool.
•This tool is not intended for using in explosive
atmospheres and is not insulated for contact with
electric power sources.
•Solvent and coatings can be highly
flammable or combustible especially
when sprayed. Adequate exhaust must
be provided to keep air free of
accumulations of flammable vapors.
•Smoking must never be allowed in the spray area.
•Fire extinguishing equipment must be present in
the spray area.
•Never spray near sources of ignition such as pilot
lights, welders, etc.
•Halogenated hydrocarbon solvents — for example;
methylene chloride, are not chemically compatible
with the aluminum that might be used in many
system components. The chemical reaction caused by
these solvents reacting with aluminum can become
violent and lead to an equipment explosion. Guns
with stainless steel fluid passages may be used with
these solvents. However, aluminum is widely used in
other spray application equipment - such as material
pumps, cups and regulators, valves, etc. Check all
other equipment items before use and make sure
they can also be used safely with these solvents. Read
the label or data sheet for the material you intend to
spray. If in doubt as to whether or not a coating or
cleaning material is compatible, contact your
material supplier.
•Sprayed materials may be harmful if inhaled, or if there is
contact with the skin. Adequate exhaust must be
provided to keep the air free of accumulations of
toxic materials. Use a mask or respirator when-
ever there is a chance of inhaling sprayed mate-
rials. The mask must be compatible with the mate-
rial being sprayed and its concentration.
HVLP

SX80A 3 Rev. 05/09/03
Never mount oil and water extractor on or near the air compressor.
During compression, air temperature is greatly increased. As the air cools down to room temperature, moisture
condenses in the air line, on its way to the spray gun. Therefore, always mount the oil and water extractor at a point in the air sup-
ply system where the compressed air temperature is lowest.
Drain air lines properly.
Pitch all air lines back towards the compressor so that condensed moisture will flow back into the air receiver where
it can be drained off. Each low point in an air line acts as a water trap. Such points should be fitted with an easily
accessible drain. See diagram above.
Drain
Length of Pipe (ft.)
Air Flow
CFM 50 100 150 200
10
20
30
40
50
70
1/2"
3/4"
3/4"
1"
1"
1"
3/4"
3/4"
3/4"
1"
1"
1"
3/4"
1"
1"
1"
1-1/4"
3/4"
3/4"
1"
1"
1"
1-1/4"
AIR SUPPLY
Oil & Water
Extractor
Drain
Oil and Water Extractor should be at least 25 ft. from the compressor, farther if possible.
25 Feet or
More
Install drain at
each low point
Compressor Unit
Pitch pipe back toward air receiver
TYPES OF INSTALLATION
This spray gun is rugged in construction, and is built to yield exceptional value. The life of this product and the efficien-
cy of its operation depend upon a knowledge of its construction, use and maintenance.
SIPHON FEED CUP HOOKUP
Air pressure for atomization is regulated at
extractor. Amount of fluid is adjusted by fluid con-
trol screw on gun, viscosity of paint, and
air pressure.
PRESSURE FEED CUP HOOKUP
For fine finishing with limited spraying.
Air pressure for atomization is regulated at
extractor; fluid pressure at cup regulator. For heavy
fluids and internal mix nozzle spraying, fluid
adjusted by control screw on gun.
Fluid
Siphon
Cup
Fluid Control Screw
Air Inlet
Air Hose
Atomization
Pressure
Gauge
Oil and
Water
Extractor
HVLP
HVLP
Oil and
Water
Extractor
Atomization
Pressure
Gauge
Fluid Control Screw
Pressure Cup
Cup Regulator
Air Hose

SX80A 4 Rev. 05/09/03
FOR BEST PERFORMANCE, PLEASE BE SURE TO DO
THE FOLLOWING BEFORE USING THIS TOOL
•Tighten the gun to the cup securely with the nut and fitting supplied.
•Be sure to have the proper air pressure at the gun to operate. Proper air pressure for this tool should not
exceed 50 PSI.
•Adjust fluid control screw and spray width adjustment screw to your desired pattern before using
on production.
•Clean all parts after use.
SPRAYING
ADJUSTMENTS
In normal use, the nozzle wings are hor-
izontal as shown here. This
provides a vertical fan-shaped
pattern which gives maximum,
even, material coverage as the gun is
moved back and forth parallel to the sur-
face being finished.
Spray pattern may be infinitely
adjusted from round to flat.
Set inlet pressure at no more than 50 PSI. For optimum
performance, some materials may spray better at PSI
ratings below 50 PSI. If unsure, always test at PSI ratings
before using on final production. Try spray. If it is too
fine, decrease the air pressure or open fluid control
screw. If the spray is too thick, close the fluid control
screw. Regulate the pattern width and repeat adjustment
of spray as needed.
Fluid control screw
Turn right to decrease flow, left to increase.
HVLP

SX80A 5 Rev. 05/09/03
finish, lap each stroke over the preceding stroke, making sure
the spray is smooth and wet.
Using the lowest possible atomizing air pressure will reduce
overspray and provide maximum efficiency.
Proper handling of the gun is essential for obtaining a good fin-
ish. The gun should be held at a right angle to the surface being
covered, and moved parallel with it. For precise control of the
gun and material, the trigger should be released before the end
of the stroke.
Hold the gun from 6 to 12 inches away from the surface
depending on material and atomizing pressure. For a uniform
Light Coat Heavy Coat
Start
stroke
Pull
trigger
Release
trigger
End of
Stroke
WRONGRIGHT
Even and wet coat
6 to 12 inches
OPERATION
HVLP
SPRAY GUN
1. Submerge the front end of the gun in solvent just until the
fluid connection is covered.
2. Paint that has built up on the gun should be removed
using a bristle brush and solvent.
3. Never submerge all of the spray gun in solvent because:
•This will dissolve the lubricant in the leather packings
and on wear surfaces, causing them to dry out and
resulting in difficult operation and faster wear.
•Air passages in the gun will become clogged with
dirty solvent.
4. Using a rag moistened with solvent, wipe down the out-
side of the gun.
5. Oil gun daily. Use a drop of lightweight machine oil on:
A. fluid needle packing
B. air valve packing
C. trigger pivot point
See Fig. 1 for Location of Above Points.
6. Caution: Do not use lubricants which contain silicone.
Silicone may cause defects in the finish application.
AIR NOZZLE, FLUID NOZZLE, AIR VALVE
ASSEMBLY
1. All nozzles and needles are made to exact standards.
They should be handled carefully.
2. To clean nozzles, immerse them in solvent until any dried
material is dissolved, then blow them clean.
3. Do not use metal or sharp instrument to probe any of the
holes in the nozzles.
4. Air flow should occur before fluid-flow when the gun is
triggered. It may be necessary to adjust the fluid control
screw to make sure air flows before fluid.
5. Do not alter the gun in any way.
CLEANING & MAINTENANCE
SIPHON CUP
Turn off air supply. Disconnect cup from
lid. Raise tube out of material and pull
trigger to allow remaining material to
drain back to the cup. Empty the cup of
material. Clean the cup, lid and tube.
Add some thinner to cup. Reassemble.
Turn on air supply and spray with proper cleaning solvent.
Repeat with clean solvent if necessary. Remove solvent, discon-
nect gun, remove air cap and clean. Wipe gun and cup with
rag dampened with solvent.
CAUTION…
To avoid cross-threading, all spray gun parts should be
screwed in hand tight initially. If the parts can not easily be
turned by hand , be sure you have the correct parts, un-
screw, realign, and try again. NEVER use excessive force in
matching parts.
Fig. 1
C
A
B

SX80A 6 Rev. 05/09/03
TROUBLESHOOTING
One side of nozzle wing is
clogged.
PROBLEMSPRAY PATTERN/
CONDITION
A.) Loose air nozzle.
B.) Material around outside of
air nozzle has dried.
A.) Atomization air pressure is set
too high.
B.) Trying to spray a thin material
in too wide a pattern.
Spitting
SOLUTION
A.) Reduce air pressure.
B.) Increase material control by turning fluid
control screw to left, while reducing spray
width by turning spray width adjustment
screw to right.
Soak nozzle in solvent to loosen clog, then blow air
through until clean. To clean orifices use a broom straw
or toothpick. Never try and detach dried material with
sharp tool.
A.) Tighten air nozzle.
B.) Take off air nozzle and wipe off fluid tip,
using rag moistened with thinner.
A.) Back up knurled nut, put a few drops of
machine oil on packing, re-tighten nut.
B.) Take off fluid nozzle, clean rear of nozzle and
seat in gun body. Replace nozzle and bring in
tight to body.
C.) Tighten or change out swivel nut.
A.) Packing around needle valve
is dried out.
B. Fluid nozzle loosely installed,
or dirt between nozzle
and body.
C.) Loose or defective swivel nut
on siphon cup.
Fluid leakage from
packing nut.
A.) Packing nut loose.
B.) Packing worn or dry.
A.) Tighten, but not so tight as to grip needle.
B.) Replace packing or lubricate.
Dripping from fluid tip.
A.) Dry packing.
B.) Sluggish needle.
C.) Tight packing nut.
D.) Worn fluid nozzle or needle.
A.) Lubricate.
B.) Lubricate.
C.) Adjust.
D.) For pressure feed, replace with new fluid nozzle
and needle.
Thin, sandy coarse finish.
Thick, dimpled finish
resembling orange peel.
A.) Gun held too far from surface.
B.) Atomization pressure set
too high.
Gun held too close to surface.
A.) Move gun closer to surface.
B.) Adjust atomization pressure.
Move gun further from surface.
Will not spray.
A.) No air pressure at gun.
B.) Fluid pressure too low with
internal mix cap and
pressure tank.
C.) Fluid control screw not
open enough.
D.) Fluid too heavy for
suction feed.
A.) Check air supply and air lines.
B.) Increase fluid pressure at tank.
C.) Open fluid control screw.
D.) Thin material or change to pressure feed.
Unable to get round spray. Fan adjustment screw not
seating properly. Clean or replace.
Improper spray pattern. A.) Gun improperly adjusted.
B.) Dirty air cap.
C.) Fluid tip obstructed.
D.) Sluggish needle.
A.) Readjust gun. Follow instructions carefully.
B.) Clean air cap.
C.) Clean.
D.) Lubricate.

SX80A 7 Rev. 05/09/03
PARTS BREAKDOWN - SX80A
RS801SK Includes all parts as
asterisked on parts diagram
1
23
4
*
*
*
*
*
18
15
17
16
13
14
12
11
10
9
21
**
*
*
7
8
5
6

ITEM NO. PART NO. DESCRIPTION
1RS801-01 Air Cap/Retaining Ring
2RS801-02 Fluid Tip and Gasket
3RS801-03 Gasket
4RS801-04 Baffle
5RS801-05 Lock Nut
6RS801-06 Nipple
7RS801-07 Packing (2)
8RS801-08 Packing Gland
9RS801-09 Trigger Bearing Stud
10 RS801-10 Trigger
11 RS801-11 Screw
12 RS801-12 Nipple
13 RS801-13 Gasket
14 RS801-14 Bushing
15 RS801-15 Fluid Needle
16 RS801-16 Spring
17 RS801-17 Adjusting Screw
18 RS801-18 Fan Adjustment Assembly
21 RS801-21 Air Valve Assembly
*RS801SK Repair Kit
*Includes all parts as asterisked on parts diagram.
SX80A 8 Rev. 05/09/03
PARTS LIST - SX80A
LIMITED WARRANTY...
SUNEX INTERNATIONAL, INC. WARRANTS TO ITS CUSTOMERS THAT THE COMPANY’S SUNEX TOOLS®BRANDED
PRODUCTS ARE FREE FROM DEFECTS IN WORKMANSHIP AND MATERIALS.
Sunex International, Inc. will repair or replace its Sunex Tools®branded products which fail to give satisfactory service due to defective
workmanship or materials, based upon the terms and conditions of the following described warranty plans attributed to that specific product.
This product carries a 90 day warranty. During this warranty period, Sunex Tools will repair or replace at our option any part or unit which
proves to be defective in material or workmanship.
Other important warranty information...
This warranty does not cover damage to equipment or tools arising from alteration, abuse, misuse, damage and does not cover any repairs or
replacement made by anyone other than Sunex Tools or its authorized warranty service centers.The foregoing obligation is Sunex Tools’ sole
liability under this or any implied warranty and under no circumstances shall we be liable for any incidental or consequential damages.
Note: Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may
not apply to you. Please contact your local Sunex distributor for proper warranty handling procedures.
If you have any questions about warranty service, please write to Sunex Tools. This warranty gives you specific legal rights and you may also
have other rights which vary from state to state. Repair kits and replacement parts are available for many of Sunex Tools products regardless
of whether or not the product is still covered by a warranty plan.
Shipping Address: Sunex Tools • 315 Hawkins Rd. • Travelers Rest, SC 29690
Mailing Address: Sunex Tools • P.O. Box 4215 • Greenville, SC 29608