Matco Tools SE75 User manual

SE75 1 Rev. 04/25/05
Operating Instructions • Warning Information
Parts Breakdown
SE75
Touch Up Gravity Feed
HVLP Spray Gun
™
SPECIFICATIONS
Fluid Orifice . . . . . . . . . . . . . . . 0.8mm
Air Inlet. . . . . . . . . . . . . . . . . . 1/4 NPT
Rec. Max. Inlet Pressure . . . . . . . . 43 PSI
Nozzle Pressure. . . . . . . . . . . . . . 10 PSI
CFM. . . . . . . . . . . . . . . . 3.03 @ 43 PSI
Cup Size. . . . . . . . . . . . . . . . . . . 150cc
Copyright © Professional Tool Products, 2005
All rights reserved.
SE75_OpMan_051605.indd 1 5/16/05 4:38:40 PM

SE75 2 Rev. 04/25/05
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.
Never direct air at yourself or anyone
else. Whipping hoses can cause serious
injury. Always check for damaged 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 between air supply,
and hose whip, or between hose whip and leader
hose. Do not exceed maximum air pressure of 43 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.
• Don’t 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.
• Don’t force tool. It will do the job better and safer at
the rate for which it was designed.
• Don’t abuse hoses or connectors. Never carry tool by
the hose or yank it to disconnect from power 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 whenever there is
a chance of inhaling sprayed materials. The
mask must be compatible with the material being sprayed
and its concentration.
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SE75 3 Rev. 04/25/05
GRAVITY FEED CUP HOOKUP
For fine finishing with limited spraying.
Air pressure for atomization is regulated at
extractor. Amount of fluid is adjusted by fluid
control screw on gun, viscosity of paint, and
air pressure.
This spray gun is rugged in construction, and is built to yield exceptional value. The life of this product and the efficiency of its
operation depend upon a knowledge of its construction, use and maintenance.
INSTALLATION
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
supply 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
AIR SUPPLY
Length of Pipe (ft.)
Air Flow
CFM 50 100 150
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"
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
Air Inlet
Air Hose
Oil and Water
Extractor
Fluid Control Screw
Gravity Feed Cup
Atomization
Pressure Gauge
200
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SE75 4 Rev. 04/25/05
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 be no more
than 35 PSI for lacquer and for enamel.
• 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
horizontal 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 surface being
finished.
Spray pattern may be infinitely
adjusted from round to flat.
Set atomization pressure at no more than 35 PSI. For
optimum performance, some materials may spray better
at PSI ratings below 35. 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.
®
®
®
HVLP SPRAY GUN
The model you have purchased is a
professional high volume, low pressure,
spray gun. It is designed to spray very
efficiently with virtually no overspray.
To accomplish this, the inlet pressure
regulation is critical. Please be sure to
read pressure requirements carefully.
Fluid control screw.
Turn right to decrease flow,
left to increase.
Spray width adjustment screw.
Turn right for round, left for fan.
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SE75 5 Rev. 04/25/05
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
outside 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.
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
finish. 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
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.
GRAVITY FEED
Turn off air supply. Remove cover of cup. Empty the cup
of material. Clean the cup and cover. Add some cleaning
solvent to cup. Replace cup cover. Turn on air supply and
spray with proper cleaning solvent. Repeat with clean
solvent if necessary. Remove solvent, disconnect gun,remove
cup cover 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,
unscrew, realign, and try again. NEVER use excessive force
in matching parts.
CLEANING & MAINTENANCE
OPERATION
Fig. 1
C
B
A
SE75_OpMan_051605.indd 5 5/16/05 4:38:44 PM

SE75 6 Rev. 04/25/05
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 mate-
rial 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 farther 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.
SE75_OpMan_051605.indd 6 5/16/05 4:38:45 PM

SE75 7 Rev. 04/25/05
PARTS BREAKDOWN - SE75
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 





 

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


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
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Optional nozzle kits available:
RS82805NK 0.5mm
RS82808NKR 0.8mm (color coded red)
RS82812NK 1.2mm
Nozzle kits consist of:
1 Air Cap
1 Fluid Needle
1 Fluid Nozzle
SE75_OpMan_051605.indd 7 5/16/05 4:38:46 PM

SE75 8 Rev. 04/25/05
PARTS LIST - SE75
WARRANTY
Matco warrants its air tools for a period of 1 year to the consumer. We will repair any air tool covered under this warranty
which proves to be defective in material or workmanship during the warranty period. In order to have your tool repaired,
return the tool to any Matco Authorized Warranty Center, freight prepaid. Please include a copy of your proof of purchase and
a brief description of the problem. The tool will be inspected and if any part or parts are found to be defective in material or
workmanship, they will be repaired free of charge and the repaired tool will be returned to you freight prepaid.
This warranty gives you specific rights. You may also have other rights which vary from state to state.
The foregoing obligation is Matco’s sole liability under this or any implied warranty and under no circumstances shall Matco
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.
Index # Part # Description Qty.
1 RS2601A Air Cap (0.8mm) - red 1
2 RS2006 Fluid Nozzle (0.8mm) 1
3 RS2007 Air Distribution Ring 1
4 RS2008 Needle Packing Bushing 1
5 RS2009 Needle Packing 1
6 RS2009-1 Needle Packing Spring 1
7 RS2005 Packing 1
9 RS2010 Fluid Nipple 1
10 RS2021 Paint Needle (0.8mm) 1
11 RS2020 Needle Spring 1
12 RS2019A Lock Nut 1
13 RS2018A Fluid Control Knob 1
14 RS2027 Air Valve Assembly (including
#15)
1
15 Air Piston Spring (included
with #14)
1
16 RS2022 Air Piston Gasket 1
17 RS2030 Fan Control 1
18 RS2029A Fan Control Knob 1
19 RS2028 Fan Control Screw 1
™
Index # Part # Description Qty.
20 RS1931 Air Inlet Fitting 1
21 RS2041A Air Valve Assembly 1
22 RS2013 Trigger 1
23 Gasket (included with #24) 1
24 RS2015A Upper Trigger Pin (including
#23 [2], #25)
1
25 E-Ring (included with #24,
26)
1
26 RS2016A Lower Trigger Pin (including
#25)
1
27 RLDR10 Regulator Gauge 1
28 RL70C 150cc Aluminum Cup 1
29 RS1730A Spanner 1
30 RS1732 Brush 1
RS2012AL-1 Gasket for Aluminum Cup Lid
(not shown)
1
RS9003PKG 10--Pack Material Filters (not
shown)
1
RS2000RK Repair Kit (includes astericked
parts and other parts not
shown individually)
SE75_OpMan_051605.indd 8 5/16/05 4:38:47 PM