Graco TexSpray Compact HP Operation manual

308718
Rev. F
First choice when
quality counts. t
INSTRUCTIONS–PARTS LIST
INSTRUCTIONS
This manual contains important
warnings and information.
READ AND KEEP FOR REFERENCE.
– For Water-Based Materials Only –
ELECTRIC TEXTURE SPRAYER WITH COMPRESSOR
TexSpraytCompact HP
100 psi (0.7 MPa, 7 bar) Maximum Working Pressure
Power Model Description
120V,
60 Hz 231780 Sprayer Model 231801, Series B with 1-in. fluid hose, 3/8-in. air hose,
and Trigger Gun
231782 Sprayer Model 231801, Series B
with 1-in. fluid hose, 3/8-in. air hose,
and Flex Gun
231783 Sprayer Model 231801, Series B
with 1-in. fluid hose, 3/8-in. air hose,
and 3-ft Pole Gun
240V,
50 Hz 231788 Sprayer Model 231803, Series B with 1-in. fluid hose, 3/8-in. air hose,
and Trigger Gun
231790 Sprayer Model 231803, Series B
with 1-in. fluid hose, 3/8-in. air hose,
and Flex Gun
231791 Sprayer Model 231803, Series B
with 1-in. fluid hose, 3/8-in. air hose,
and 3-ft Pole Gun
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
ECOPYRIGHT 1997, GRACO INC.
Graco Inc. is registered to I.S. EN ISO 9001
7068B
Model 231780 shown

2 308718
Table of Contents
Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Component Identification and Function 4. . . . . . . . . . . .
Preparation 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Startup 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Spray Techniques 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shutdown and Cleanup 14. . . . . . . . . . . . . . . . . . . . . . . .
Pump Maintenance 16. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing and Reinstalling Compressor 20. . . . . . . . . .
Removing and Inspecting Cooler 22. . . . . . . . . . . . . . . .
Wiring Diagram 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Drawing 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts List 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessories 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Warranty 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Phone Number 28. . . . . . . . . . . . . . . . . . . . . . . . . .
Symbols
Warning Symbol
WARNING
This symbol alerts you to the possibility of serious
injury or death if you do not follow the instructions.
Caution Symbol
CAUTION
This symbol alerts you to the possibility of damage to
or destruction of equipment if you do not follow the
instructions.
WARNING
INSTRUCTIONS
EQUIPMENT MISUSE HAZARD
Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury.
DThis equipment is for professional use only.
DRead all instruction manuals, tags, and labels before operating the equipment.
DUse the equipment only for its intended purpose. If you are not sure, call your Graco distributor.
DDo not expose the system to rain. Always store the system indoors.
DDo not alter or modify this equipment. Use only genuine Graco parts.
DCheck equipment daily. Repair or replace worn or damaged parts immediately.
DDo not exceed the maximum working pressure of the lowest rated component in your system. This
equipment has a 100 psi (0.7 MPa, 7 bar) maximum working pressure at 100 psi (0.7 MPa,
7 bar) maximum air pressure.
DTo reduce the risk of serious injury, including electric shock and splashing fluid in the eyes, follow
the Pressure Relief Procedure on page 5 before checking or repairing the compressor.
DDo not use hoses to pull equipment.
DRoute hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose
Graco hoses to temperatures above 55_C (130_F) or below –40_C (–40_F).
DDo not lift pressurized equipment.

3308718
WARNING
TOXIC FLUID HAZARD
Hazardous fluid or toxic fumes can cause serious injury or death if splashed in the eyes or on the skin,
inhaled, or swallowed.
Know the specific hazards of the fluid you are using.
Store hazardous fluid in an approved container. Dispose of hazardous fluid according to all local,
state and national guidelines.
Always wear protective eyewear, gloves, clothing and respirator as recommended by the fluid and
solvent manufacturer.
Pipe and dispose of exhaust air safely, away from people, animals, and food handling areas.
Never directly inhale compressed air. Compressed air may contain toxic vapors.
FIRE AND EXPLOSION HAZARD
Improper grounding, poor ventilation, open flames or sparks can cause a hazardous condition and
result in a fire or explosion and serious injury.
The system is for use only with water-based materials. Use fluids compatible with the
equipment wetted parts. Refer to the Technical Data section of all equipment manuals. Read the
fluid and solvent manufacturer’s warnings.
Ground the equipment. See Grounding and Electrical Requirements on page 6.
If there is any static sparking or you feel an electric shock while using this equipment, stop
spraying immediately. Do not use the equipment until you identify and correct the problem.
Provide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid
being sprayed.
Keep the work area free of debris, including solvent, rags, and gasoline.
Locate the sprayer at least 20 ft (6.1 m) away from any explosive vapors, due to arcing parts.
Comply with all applicable local, state, and national fire, electrical, and safety regulations.
CLEANING SOLVENT HAZARD WITH PLASTIC PARTS
Use only compatible solvents to clean plastic structural or pressure-containing parts. Many solvents
can degrade plastic parts to the point where they could fail. Such failure could cause serious injury or
property damage. See the Technical Data section on page 27 in this instruction manual and in all
other equipment manuals. Read the fluid and solvent manufacturer’s warnings.

M
K
LD
E
H
J
G
B
C
A
F
Fig. 1
closed N
open
7136A
O7069B
4 308718
Component Identification and Function
AAir outlet Provides quick disconnect connection for air supply to spray gun
BPump outlet fitting Provides connection for hose and fluid supply to spray gun
CAir pressure regulator Adjusts air pressure to control air pressure to pump
DON/OFF switch Power switch that controls 120/240V AC power to sprayer
E Compressor Open frame AC motor, 1 phase, with two-cylinder, oil-less, single-stage
air compressor
F Pump Pressurizes fluid to be sprayed through spray gun
G Cooler Reduces temperature of air from compressor
HSpray gun Uses compressor air to break up and spray texture material
J Hopper Holds texture material;12 gallon (45 liter) maximum capacity
KAir filter Filters incoming air to the compressor
LMaterial screen Filters material to the pump
MAuxiliary air compressor port Provides connection to replacement or supplemental air compressor
NGun air valve Shuts off air supply to spray gun
OAir line drain valve Allows air line moisture accumulation to be drained

5308718
Preparation
Compressor Break-in
The first time you use the system, run the compressor
under no load for 15 minutes to break it in, improve its
performance, and lengthen its life.
1. Connect the air hose to the air outlet (A) and to the
gun air inlet. Open gun air valve (423), and turn air
restrictor valve (424) all the way to the + position.
See Fig. 2.
Fig. 2
7070B
A
7132A
423
(shown
open) 424
2. Turn the ON/OFF switch (D) ON. Run the system
for 15 minutes. Turn the switch OFF. See Fig. 3.
Fig. 3
D
7078B
WARNING
PRESSURIZED EQUIPMENT HAZARD
The system pressure must be manually relieved to
prevent the system from starting or spraying
accidentally. To reduce the risk of an injury from
accidental spray from the gun, splashing fluid, or
moving parts, follow the Pressure Relief
Procedure whenever you
Are instructed to relieve the pressure
Stop spraying
Check or service any of the system equipment
Install or clean the spray nozzle
Pressure Relief Procedure
1. Shut off the system.
2. Trigger the gun, and spray the material back into
the hopper.
3. Open the gun air valve (handle parallel with valve
body).
4. Unplug the electrical power cord.
5. Place a rag over the pump outlet fitting (B in
Fig. 1), and slowly open the cam locks to relieve
residual pressure.

6 308718
Preparation
Grounding and Electrical Requirements
WARNING
Improper installation or alteration of the grounding
plug will result in a risk of electric shock, fire or
explosion that could cause serious injury or death.
Extension Cords
Use only an extension cord with an undamaged,
3-prong plug.
For up to 25 ft (7.6 m) cord, use 3-wire, 12 AWG
(1.5 mm2) minimum.
For 25 to 50 ft (7.6 to 15.2 m) cords, use 3-wire,
10 AWG (2.5 mm2) minimum.
120V AC Systems
This equipment requires a 120V AC, 60 Hz, 15A
circuit with a grounding receptacle. See Fig. 4.
Fig. 4 grounding prong
grounded
outlets
Do not alter the ground prong or use an
ungrounded adapter.
A maximum length of 25 ft, 12 AWG or 50 ft,
10 AWG extension cord may be used.
240V AC Systems
This equipment requires a 240V AC, 50 Hz, 16A
circuit with a grounding receptacle. See Fig. 5.
Fig. 5
grounded
outlet
grounding prong
Do not alter the ground prong or use an
ungrounded adapter.
A maximum length of 8 m, 1.5 mm2or 15 m,
2.5 mm2extension cord may be used.
System Setup
1. Connect the hoses and gun as shown See Fig. 6.
Fig. 6 7072B
2. Be sure the air filter (K) and the material screen (L)
are in place. See Fig. 7.
3. Plug the power cord into a properly grounded
outlet.
Fig. 7
K
1Located inside hopper
L
07073B
1

7308718
Preparation
Auxiliary Air Compressor
An external air compressor may be connected
(adapter included) to the auxiliary air compressor port
(L) to supplement or replace the internal air
compressor of the TexSpray. This may be useful when
Additional air is needed to break up hard-to-spray
materials
When the job site does not have the proper electric
service, but a gasoline-powered compressor is
available
WARNING
Overpressurizing the system may cause compo-
nent rupture and result in serious injury.
To reduce the risk of overpressurizing the system, do
not use a compressor with an output pressure greater
than 100 psi (70 kPa, 7 bar), or with a delivery greater
than 6.8 scfm at 90 psi (0.19 m3/min. at 60.3 kPa, 6.3
bar).
Hose Size and Lengths
The system comes with a hose set consisting of a
1-in. ID x 25-ft (25 mm x 7.6 m) fluid hose and a
3/8-in. ID air hose. The 1-in. hose set includes an
adapter hose between the gun and main hose. See the
Parts List on page 25.
Use the shortest length possible when spraying.
Increasing hose length decreases sprayer
performance. Do not use more than 75 ft (23 m) of
fluid hose.
Removing and Installing the Hopper
1. To remove the hopper (J), loosen the knob (P) until
about 1 in. of thread shows. Lift the hopper straight
up off the unit. See Fig. 8.
2. To install the hopper, position the hopper drain
over the pump inlets while tilting the hopper very
slightly forward. As you engage the inlets,
straighten the hopper and push down. Visually
inspect the pump inlets to be sure the hopper is
fully engaged. Tighten the knob (P). See Fig. 8.
Fig. 8 7071A
P
J

8 308718
Preparation
Operation Characteristics
Always start the system with the compressor air
relieved.
How to relieve compressor pressure: Be sure
the gun air valve (423) and air restrictor valve (424)
are open. This relieves compressor air every time
you shut off the system. See Fig. 9.
Air bleeds from the gun nozzle when the gun air
valve (423) is open. See Fig. 9. You may close the
valve to stop the air, or you can leave it open at all
times except while priming the system. See Spray
Techniques on pages 12 and 13 for more gun
characteristics.
A compressor unloader valve (30) with two
pressure relief valves (30d) is located under the
compressor guard (16). Air escapes from the valve,
causing a popping sound, when air flow at the gun
is too restricted. The valve resets automatically
when the air flow is increased. See Fig. 10.
If air exhausts through the pump muffler or the
pump starts and then stops, see texture pump
instruction manual 309009.
Always have the fluid hose installed when there is
material in the hopper. If the hose is removed, the
hopper will drain out through the pump.
WARNING
The motor has a thermal overload switch that shuts
down the motor if it overheats.
To reduce the risk of serious bodily injury due to the
system restarting unexpectedly, always turn the
ON/OFF switch (D) OFF if the motor shuts down.
See Fig. 3 on page 5.
CAUTION
Damage to the power cord could result from
uninterrupted operation. Do not operate sprayer at
maximum pressure for more than 1 hour in any
2-hour period.
Fig. 9 7132A
423
(shown open)
424
Fig. 10
30
16 7074A
30d

9308718
Preparation
Wetting the Hose Before Pumping Texture
Material
Wet the inside of the hose before each use to flush out
sediment and to prevent the texture material from
packing out the hose.
1. The hopper (J) capacity is 12 gallons (45 liters).
Pour a gallon (3.8 liters) of clean water into the
hopper. See Fig. 12 on page 10.
2. Close the gun air valve (423); the system primes
easier if no air is supplied to the gun. See Fig. 11.
3. Turn the ON/OFF switch (D) ON. Aim the gun into
the hopper (J), and trigger the gun to circulate the
water for a few minutes and to wet the inside of
the fluid hose. See Fig. 12.
4. Trigger the gun into a pail to lower the water to the
hopper strainer (L) level. See Fig. 12.
5. Turn the ON/OFF switch (D) OFF.
6. Open the gun air valve (423) to relieve the
compressor air. See Fig. 11.
Fig. 11
closed 423 open
7136A
Mixing the Material
CAUTION
This system is designed for use with only certain
types of material. Any other use could seriously
damage the unit.
Do not use any solvent-based materials. Use
only water-based materials.
Use only simulated acoustic and gypsum-based
wall texture materials in this system.
Do not spray cementious materials, which will
damage the pump.
Proper material mixture is essential. The pump will
not operate if the material is too thick.
NOTE: Mix the material in a separate container and
pour it into the hopper for best results.
Slowly add one bag of texture material to clean water
as instructed on the bag instructions. Agitate to a
smooth, lump-free consistency. Thin the material as
needed before pouring it into the hopper. Material
must be mixed thoroughly to a consistency that
immediately folds back in as you draw your finger
through the surface of the material. For the best
results, do not use partial bags of material.

10 308718
Startup
Fig. 12
1
1
D
L
J
Located inside hopper
7073B
Prime the System
1. Fill the hopper (J) with the prepared texture
material.
2. Install a tip. See the Tip Selection Chart on
page 12.
3. Open the gun air valve (423) to be sure air
pressure is relieved, then close it. The system
primes easier if no air is supplied to the gun.
4. Be sure there are no kinks in the hose, which
restricts fluid flow.
NOTE: If spraying a simulated acoustic and coarse
aggregate material, disconnect the hose at the gun,
prime the pump and hose, and circulate material back
into the hopper for 10 seconds. Turn off the pump.
Install the gun and tip.
5. Turn the ON/OFF switch (D) ON. Trigger the gun
into a pail. When texture material appears at the
tip, move the gun to the hopper and circulate until
there is a solid stream of texture material.
6. See Spray Techniques on pages 12 and 13 for
proper spray pattern with pump and gun
adjustments.

11308718
Notes

12 308718
Spray Techniques
Tip Selection Chart
Application Tip Orifice2Air Volume1
Fog 1/8 in. high
Simulated
acoustic 3/16 in. (fine, for small
confined areas)
1/4 in.
(fine to medium)
5/16 in.
(coarse)
medium to
high
Orange peel 1/8 to 3/16 in. medium to
high
Splatter coat 1/4 to 5/16 in. low to
medium
Knockdown 5/16 in. low
1Control air volume with the gun air flow valve (424).
2For more material volume, try a larger-orifice tip.
Adjusting the System
Sufficient fluid output (volume and pressure) and good
atomization require testing to balance the compressor
air to the gun and pump and proper tip selection. Keep
in mind these important points when adjusting the gun:
Read all of pages 12 and 13 before spraying.
Start the sprayer with the gun air flow valve (424) at
its maximum setting (fully +). If needed, slowly
decrease the gun air flow until you get a good spray
pattern. Use the minimum amount of air at the
spray gun to achieve the proper spray pattern and
to minimize bounce back.
–Test the spray pattern on cardboard. Hold the
gun 18 to 30 in. (457 to 762 mm) from the
surface. Use this spraying distance for most
applications.
–Overlap each stroke 50% in a circular motion.
Select the proper tip for your application. See the
Tip Selection Chart at left. Consider the size of
aggregate in the material and the coarseness of the
spray pattern. Remember, the larger the tip, the
heavier the pattern.
All spraying adjustments are made at the gun.
Material pressure and flow rate adjustments are
made at the regulator.
The compressor provides air to the gun and the
pump; thus, the more air you supply to the gun, the
less that is available for the pump.
–Turning the air flow valve (424) toward (+)
increases air flow through the gun, which
decreases texture material flow through the
pump.
–Turning the air flow valve (424) toward (–)
decreases air flow through the gun, which
increases texture material flow through the
pump.

13308718
Spray Techniques
To Get Less Material
Try any one or a combination of these methods:
Screw in the gun fluid regulator knob (418).
Use a smaller tip.
Reduce pump pressure. Use the regulator.
To Get More Material
Try any one or a combination of these methods:
Turn the air flow valve (424) to decrease (–).
Unscrew the fluid knob (418) to increase trigger
travel.
Note: Maximum trigger travel occurs when trigger
bail (401) can hold trigger in open position. Fig. 13.
Use a shorter hose.
Use a thinner material mixture.
Try a larger-orifice tip.
Increase pump pressure (use the regulator).
CAUTION
Turning the knob (418) out too far will remove the
knob and the gun will not shut off when the trigger is
released.
7134A
OUT
423
Fig. 13
418 IN
424
401
Preventing Material Surge
To prevent material surge at the beginning of a spray
pattern, slowly squeeze the trigger to the fully triggered
position while moving the gun quickly.
For Continuous Spraying
Use the trigger bail (401) to hold the trigger open to
reduce operator fatigue.
Check Material Consistency Periodically
Check and thin the material as needed to maintain the
proper consistency. The material may thicken as it sits
and slow down production or affect the spray pattern.
IN
OUT
7133A
423
Fig. 14
418
424
401

14 308718
Shutdown and Cleanup
NOTE: Keep the pump and hose clean when switching
between texture, knockdown, and orange peel
applications. A dirty pump can release a piece of
texture into the finish.
CAUTION
To keep the unit in good operating condition, always
clean it thoroughly and prepare it properly for
storage, even if only for the night. Pay particular
attention to these areas:
Keep the pump wet during non-use to help
prevent contaminants from drying inside the
pump.
Clean the sponge filter at least daily. A dirty filter
allows contaminates into the compressor and
eventually into the pump, resulting in poor
performance and damage.
Removing the material hose will allow the pump
to drain too rapidly; the material hose must
remain connected to keep the pump wet.
Oil the gun daily. See Fig. 15.
Oil the pump air inlet. See Maintenance in
texture pump instruction manual 309009.
Fig. 15 
1Oil here
1
1
See Fig. 16 and Fig. 17
1. Be sure the compressor pressure is relieved by
opening gun air valve (423).
2. Close the gun air valve, and turn the ON/OFF
switch (D) ON.
3. Trigger the gun into a pail to lower the fluid to the
hopper strainer (L) level.
4. Half fill the hopper (J) with clean water. Clean the
inside of the hopper with a brush, if needed.
NOTE: The hopper can be removed for cleaning.
See page 7.
5. Trigger the gun into a pail until most of the texture
material is pumped out.
6. Fill the hopper with clean water.
7. Start the sprayer. Spray half the water into a pail.
Trigger the gun into the hopper to circulate the
remaining water for a few minutes.
8. Trigger the gun into the pail to empty the hopper
and the hose.
9. Turn the ON/OFF switch (D) OFF. Open the gun
air valve (423) to relieve compressor pressure.

15308718
Shutdown and Cleanup
10. Keep pump wet during non-use. Pour 12 oz.
(360 ml) of clean water into the hopper drain.
NOTE: In cold weather, store the system where it
will not freeze. If it does freeze, thaw it thoroughly
before using it.
11. Remove the air filter (K). Wash it thoroughly with
soap and water, and reinstall it.
12. Clean and dry the gun. Oil the gun daily with a few
drops of SAE–10 light oil at the points indicated in
Fig. 15.
13. When the unit cools, rinse the cooler with plain
water.
14. Drain the frame air line after each use as follows:
a. Open the drain cock valve (S).
b. Turn the ON/OFF switch (D) ON.
c. Rock the sprayer back and forth slightly to
drain any moisture in the air line.
d. Turn the ON/OFF switch (D) OFF.
e. Close the drain cock valve (S).
Fig. 16
423
7136A
closed
open
7092B
Fig. 17
L
K
D
S

16 308718
Pump Maintenance
For pump maintenance, troubleshooting, and repair, see texture pump instruction manual 309009.
Troubleshooting
See Pressure Relief Procedure on page 5.
PROBLEM CAUSE SOLUTION
Compressor not starting Trapped air pressure Relieve air pressure by connecting
air hose and opening gun air valve.
Improper power supply Connect to power supply rated for
your sprayer.
Tripped thermal overload in motor Check extension cord. Allow unit to
cool down and try again.
See Grounding and Electrical
Requirements on page 6.
Note: Remove extension cord and
plug unit directly into outlet. If unit
operates correctly, this indicates an
extension cord problem.
Clean filter, air cooler, and cooling
fan. Allow unit to cool down and try
again.
Unloader stuttering, unloading
too early, or unloading too late. Damaged unloader Replace.
Have motor serviced.
No material output from pump Not enough air pressure to pump Shut off air at the gun, and increase
air pressure to the pump to
maximum. Turn regulator clockwise
to increase.
Material too thick Thin the material. Material must be
mixed thoroughly to a consistency
that immediately folds back in as
you draw your finger through the
surface of the material.

17308718
Troubleshooting
PROBLEM CAUSE SOLUTION
No material output from pump
(continued) Stalled air valve Reset the pump as follows:
1. Open air to the gun.
2. Turn the unit off.
3. Turn the ON/OFF switch ON,
and trigger the gun into the
hopper until there is a solid
stream of texture material.
If pump continues to stall:
Thin the material. See Material
too thick on page 16.
Clean hose and gun. See below.
Try a 1–1/4 in. hose. See below.
See Troubleshooting in texture
pump instruction manual
309009.
Plugged gun or nozzle Relieve pressure, remove gun from
material hose, and cycle pump.
NOTE: A plugged gun or nozzle
may cause the hose and pump to
plug. If necessary, flush hose and
pump with clean water before
cycling material through the hose
with the gun removed.
Plugged hose, or hose too small Relieve pressure. Flush hose with
clean water, or try a 1–1/4 in. hose.
Leaky or damaged duck bills valves
in pump.
NOTE: Under normal use, the duck
bill valves and diaphragms will wear
out at 20,000 gallons. If the material
being sprayed has a stone aggre-
gate, the expected life is 3,000 to
4,000 gallons.
Clean and inspect duck bill valves.
NOTE: Texture Pump Duckbill
Valve Repair Kit 241262 is available
and can be ordered separately.
Pump in need of repair See texture pump instruction
manual 309009.
Pulsing or surging material Triggering too fast Slowly squeeze trigger to fully open
positionwhilemovinggunquicklyina
circular motion.
Leaky or damaged duck bill valves Clean and inspect duck bill valves.
NOTE: Texture Pump Duckbill
Valve Repair Kit 241262 is available
and can be ordered separately.

18 308718
Troubleshooting
PROBLEM CAUSE SOLUTION
Speed of application too slow Not enough air pressure to pump Shut off air at the gun, and increase
air pressure to the pump to maxi-
mum. Turn regulator clockwise to
increase.
Material too thick Material must be mixed thoroughly
to a consistency that immediately
folds back in as you draw your fin-
ger through the surface of the ma-
terial.
Nozzle too small Increase nozzle size.
Hose plugged or too small. Relieve pressure. Clean hose, or try
a 1–1/4 in. hose.
Leaky or damaged duck bill valves Clean and inspect duck bill valves.
NOTE: Texture Pump Duckbill
Valve Repair Kit 241262 is available
and can be ordered separately.
Pump in need of repair See texture pump instruction
manual 309009.
Pattern too fine or too much
overspray Material too thin Thicken material. Material must be mixed thoroughly to a consistency
that immediately folds back in as
you draw your finger through the
surface of the material.
Air pressure at gun too high Decrease air to gun at gun fitting.
Fluid delivery too low Increase nozzle size.
Increase air pressure to pump, or
decrease air to gun at gun fitting.
Turn fluid knob out on gun. See
Spray Techniques on pages 12
and 13.
Pattern too coarse Material too thick Thin material. Material must be
mixed thoroughly to a consistency
that immediately folds back in as
you draw your finger through the
surface of the material.
Air pressure at gun too low Increase air to gun at gun fitting.
Fluid delivery too high Decrease nozzle size.
Decrease air pressure to pump, or
increase air to gun at gun fitting.
Turn fluid knob in on gun. See
Spray Techniques on pages 12
and 13.

19308718
Notes

20 308718
Removing and Reinstalling Compressor
WARNING
HOT SURFACE HAZARD
Be sure the compressor duct work is
cool before removing it. If the sprayer
was operated recently, it will be very hot
and can cause burns.
NOTE: Clean the cooler whenever the compressor is
serviced.
Removing Compressor
1. Relieve the pressure.
See Pressure Relief
Procedure on page 5.
2. Remove the hopper.
See Fig. 18
3. Remove the pump foot screws on one end of the
pump (35), and loosen the foot screws on the
other end of the pump. Move the pump out of the
way.
4. Remove the filter cover (20).
5. Remove the two screws (7) and the shroud (18a).
Remove and clean the air filter (K).
6. Remove the compressor guard (16).
7. Remove grounding screw (36) and the two leads
(U) from the bottom of the switch (9).
Fig. 18 
K18
16
35
20
pump foot screws
7
18a
76
36
U
9