Graco TexSpray Compact HP Operation manual

308–718
Rev. C
Supercedes Rev. B
First choice when
quality counts. 
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
TexSpray Compact HP
100 psi (7 bar) Maximum Working Pressure
Power Model Description
120V,
60
Hz
231–780 Sprayer Model 231–801 with 1 in. fluid
hose, 3/8 in. air hose and T rigger Gun
231–782 Sprayer Model 231–801 with 1 in. fluid
hose, 3/8 in. air hose and Flex Gun
231–783 Sprayer Model 231–801 with 1 in. fluid
hose, 3/8 in. air hose and 3 ft Pole Gun
240V,
50 Hz
231–788 Sprayer Model 231–803 with 1 in. fluid
hose, 3/8 in. air hose and T rigger Gun
231–790 Sprayer Model 231–803 with 1 in. fluid
hose, 3/8 in. air hose and Flex Gun
231–791 Sprayer Model 231–803 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
COPYRIGHT 1997, GRACO INC.
Graco Inc. is registered to I.S. EN ISO 9001
7068A

2308–718
Table of Contents
Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Component Identification and Function 4. . . . . . . . . . . .
Preparation 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Startup 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Spray T echniques 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shutdown and Cleanup 12. . . . . . . . . . . . . . . . . . . . . . . .
Pump Maintenance 14. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compressor Repair 17. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cooler Repair 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts – Sprayer 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiring Diagram 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessories 23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Phone Number 23. . . . . . . . . . . . . . . . . . . . . . . . . .
Graco W arranty 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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 .
D
This equipment is for professional use only .
D
Read all instruction manuals, tags, and labels before operating the equipment.
D Use the equipment only for its intended purpose. If you are not sure, call Graco T echnical Assis -
tance at 1–800–543–0339.
D Do not expose the system to rain. Always store the system indoors.
D Do not alter or modify this equipment. Use only genuine Graco parts.
D Check equipment daily . Repair or replace worn or damaged parts immediately .
D
Do not exceed the maximum working pressure of the lowest rated component in your system. This
equipment has a
100 psi (7 bar) maximum working pressure at 100 psi (7 bar) maximum air
pressure.
DT o reduce the risk of serious injury , including electric shock and splashing fluid in the eyes, follow
the Pressure Relief Procedure on page 7 before checking or repairing the compressor .
D
Do not use hoses to pull equipment.
D Route 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).
D
Do not lift pressurized equipment.

3
308–718
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 equip -
ment wetted parts. Refer to the T echnical Data section of all equipment manuals. Read the fluid
and solvent manufacturer ’ s warnings.
 Ground the equipment. Refer to Grounding on page 5.
 If there is any static sparking or you feel an electric shock while using this equipment, stop spray-
ing 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.

4308–718
M
K
LD
1
E
H
J
G
B
C
A
F
7069A
Fig. 1
1
Located inside
hopper
Component Identification and Function
Closed
NOpen
7136A
O
A Air Outlet Provides quick disconnect connection for air supply to spray gun
B Pump Outlet Fitting Provides connection for hose and fluid supply to spray gun
C Air Pressure Regulator Adjusts air pressure to control air pressure to pump
D ON/OFF Switch Power switch that controls 120/240 V 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 Heat Exchanger Reduces temperature of air from compressor
H Spray Gun Uses compressor air to break up and spray texture material
J Hopper Holds texture material;12 gallon maximum capacity
K Air Filter Filters incoming air to the compressor
L Material Screen Filters material to the pump
M Auxiliary Air Compressor Port Provides connection to replacement or supplemental air compressor
N Gun Air V alve Shuts of f air supply to spray gun
O Air Line Drain V alve Allows air line moisture accumulation to be drained

5
308–718
Preparation
Compressor Break-in
The first time you use the system, run the compressor
under no load to break it in, improve performance and
lengthen its life.
1. Connect the air hose to (A) and the gun to the
other end of the hose. Open gun air valve (423)
and turn air restrictor valve (424) all the way to the
+ position. See Fig. 2 and 9.
Fig. 2 7070A
A
2. T urn the ON/OFF switch (D) ON. Run the system
for 15 minutes. T urn the switch OFF . See Fig. 3.
Fig. 3
D
7078A
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 parts, page 22.
Use the shortest length possible when spraying. In -
creasing 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 of f the unit. See Fig. 4.
2. T o 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. V isually
inspect the pump inlets to be sure the hopper is
fully engaged. T ighten the knob (P). See Fig. 4.
Fig. 4 7071A
P
J
Grounding
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.
120 V ac Systems
1. This equipment requires a 120 V ac, 60 Hz, 15A
circuit with a grounding receptacle. See Fig. 5.
Fig. 5 Grounding
Prong
Grounded
Outlets
2. Do not alter the ground prong or use an adapter .
3.
See page 6 for Extension Cord Requirements.
240 V ac Systems
1. This equipment requires a 240 V ac, 50 Hz, 6A
circuit with a grounding receptacle. See Fig. 6.
2. Do not alter the ground prong or use an adapter .
3. See page 6 for Extension Cord Requirements.
Fig. 6
Grounded
Outlet
Grounding Prong

6308–718
Preparation
Setup the System
1. Connect the hoses and gun as shown See Fig. 4.
Fig. 7 7072A
2. Be sure the air filter (K) and the material screen (L)
are in place. See Fig. 8.
3. Plug the power cord into a properly grounded,
120V , 15A (240V , 16A) (minimum) outlet.
Extension Cord Requirements:
Use a cord with an undamaged, 3 prong plug.
 For up to 25 ft (7.6 m) cord, use three wires, 12
A WG (1.5 mm
2
) minimum.
 For 25 to 50 ft (7.6 to 15.2 m) cords, use three
wire, 10 A WG (2.5 mm
2
) minimum.
 Do not use an ungrounded adapter .
Fig. 8
K
1
Located inside hopper
L
07073A
1
Using an Auxiliary Air Compressor
An external air compressor may be connected (adapt -
er 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 or ,

When the job site does not have the proper electric
service, but a gasoline-powered compressor is
available.
WARNING
Over pressurizing the system may cause compo -
nent rupture and resulting in serious injury .
T o reduce the risk of over pressurizing the system, do
not use a compressor with an output pressure greater
than 100 psi (7 bar , 70 kPa), and/or with a delivery
greater than 6.8 scfm at 90 psi (0.19 m
3
/min. at 6.3
bar , 60.3 kPa).

7
308–718
Preparation
WARNING
PRESSURIZED EQUIPMENT HAZARD
The system pressure must be manually relieved to
prevent the system from starting or spraying acci -
dentally. T
o reduce the risk of an injury from acci -
dental spray from the gun, splashing fluid, or
moving parts, follow the Pressure Relief Proce -
dure
whenever you:
 are instructed to relieve the pressure,
 stop spraying,
 check or service any of the system equipment,
 or install or clean the spray nozzle.
Pressure Relief Procedure
1. Shut of f the system.
2. T rigger the gun back into the hopper .
3.
Open the gun air valve (handle parallel with valve
body).
4.
Unplug the system.
5. Place a rag over the pump outlet fitting (B) and
slowly open the cam locks to relieve residual
pressure.
Operation Characteristics
1. Always start the system with the compressor air
relieved!
How to relieve pressure: Be sure the gun air
valve (423) and air restrictor valve (424) are open.
This relieves compressor air every time you shut
of f the system. See Fig. 9.
2. Air bleeds from the gun nozzle whenever the gun
air valve (423) is open. Close the valve to stop the
air , if desired. Otherwise, it can stay open except
during priming. See Fig. 9. See page 10 for more
gun characteristics.
3. A compressor unloader valve (10) with two pres -
sure relief valves (W) is located under the com -
pressor guard (1
1). 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.
4. If air exhausts through the pump muf fler or the
pump starts and then stops, see texture pump
manual 308–781.
5. 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 which
shuts down the motor if it overheats.
T o 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.
CAUTION
Damage to the power cord may result from uninter -
rupted operation. Do not operate sprayer at maxi -
mum pressure for more than 1 hour in any 2 hour
period.
Fig. 9 7132A
423
1
Gun air valve
shown open
1
424
Fig. 10
10
11 7074A
W

8308–718
Preparation
Wet 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 (30 liters).
Pour a gallon of clean water into the hopper .
2.
Close the gun air valve (423); the system primes
easier if no air is supplied to the gun.
3. T urn the ON/OFF switch (D) ON. T rigger the gun
into the hopper (J). T rigger the gun to circulate the
water for a few minutes and wet the inside of the
fluid hose.
4. T rigger the gun into a pail to lower the water to the
hopper strainer (L) level.
5. T urn the ON/OFF switch (D) OFF .
6.
Open the gun air valve (423) to relieve the com -
pressor air .
Fig. 11
Closed 423 Open
7136A
Mix 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
won’t operate if the material is too thick.
Mix material in a separate container and pour 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. For the
best results, do not use partial bags of material.

9
308–718
Startup
Prime the System
1. Fill the hopper (J) with the prepared texture
material.
2.
Install a tip. Refer to the T ip Selection Chart on
page 10.
3. Open the gun air valve (423) to be sure air pres -
sure is relieved and then close it again; 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. T urn of f the pump.
Install the gun and tip.
5. T urn the ON/OFF switch (D) ON. T rigger 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 SPRA Y TECHNIQUES on pages 10 and 1 1
for how to balance the pump and gun adjustments
for a good spray pattern.
Fig. 12
1
1
D
L
J
Located inside hopper
7073A

10 308–718
Spray T echniques
Tip Selection Chart
Application Tip Orifice
2
Air V olume1
Fog 1/8 in. High
Simulated
Acoustic
3/16 in.
(fine, or 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
1
Control air volume with the gun air flow valve (424).
2
For more material volume, try a larger orifice tip.
Adjusting the System
Sufficient fluid output (volume and pressure) and good
atomization requires testing to balance the compressor
air to the gun and pump and to select the right tip.
Keep in mind these important points when adjusting
the gun:
1. Read all of pages 10 and 1 1 first.
2. Refer to the chart above for tip selection. Consider
the size of aggregate in the material and the
coarseness of the spray pattern. Remember , the
larger the tip, the heavier the pattern.
3. The compressor provides air to both the gun and
the pump; the more air you supply to the gun, the
less that is available for the pump.
4. All spraying adjustments are made at the gun;
material pressure and flow rate is made by adjust -
ing the regulator .
5.
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 minimize bounce back.
6. T urning the air flow valve (424) toward
(+) increases air flow through the gun which
decreases texture material output .
7. T
urning the air flow valve (424) toward
(–) decreases air flow through the gun which
increases pump output.
To Get Less Material
Try any one or a combination of these methods.
1. Screw in the gun fluid regulator knob (418).
2. Use a smaller tip.
3. Reduce pump pressure. Use the regulator .
To Get More Material
Try any one or a combination of these methods.
1. T urn the air flow valve (424) to decrease ( –).
2.
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.
3. Use a shorter hose.
4. Use a thinner material mixture.
5. T ry a larger orifice tip.
6. Increase pump pressure. Use the regulator .
CAUTION
T urning the knob (418) out too far will remove the
knob and the gun will not shut of f when the trigger is
released.
7. T est 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.
8. Overlap each stroke 50% in a circular motion.

OUT
423
Fig. 13
418 IN
424
401

11
308–718
Spray T echniques
How to Prevent Material Surge at the
Beginning of a Spray Pattern
Squeeze the trigger slowly to the fully triggered posi -
tion 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 af
fect the spray
pattern.
IN
OUT

423
Fig. 14
418
424
401

12 308–718
Shutdown and Cleanup
1. Fig. 15. and 16. Be sure the compressor pressure
is relieved – gun air valve (423) open. Close the
gun air valve again. T urn the ON/OFF switch (D)
ON.
2. T
rigger the gun into a pail to lower the fluid to the
hopper strainer (L) level. See Fig. 16.
3. Fill the hopper (J) about half full with clean water ,
depending on the hose length. Clean the inside of
the hopper with a brush, if needed.
NOTE: The hopper can be removed for cleaning. See
page 5.
4. T rigger the gun into a pail until most of the texture
material is pumped out.
5. Fill the hopper with clean water .
6.
Start the sprayer . Spray half the water into a pail.
T rigger the gun into the hopper to circulate the
remaining water for a few minutes.
7. T rigger the gun into the pail to empty the hopper
and the hose.
8. T urn the ON/OFF switch (D) OFF . Open the gun
air valve (423) to relieve compressor pressure.
See Fig. 15. and 16.
9. Keep pump wet during non-use. Pour 12 oz.
(360 ml) of clean water into the hopper drain.
CAUTION
T o keep the unit in good operating condition, always
clean it thoroughly and prepare it properly for
storage, even for overnight storage. 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 perfor -
mance and damage.
 Removing the material hose will allow the pump
to drain rapidly . The material hose must remain
connected to keep the pump wet.
 Oil the gun daily .
 Oil the pump air inlet. See Pump Maintenance in
the T exture Pump Manual 308–781.
NOTE: In cold weather , store the system where it will
not freeze. If it does freeze, thaw it thoroughly before
using it.
10. Remove the air filter (21), wash it thoroughly with
soap and water
, and reinstall it. See Fig. 16.
11. 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.
12. When the unit cools, rinse the cooler with plain
water.
NOTE: Keep the pump and hose clean when switching
between texture, knockdown and orange peel. A dirty
pump can release a piece of texture into the finish.
13. Drain the frame air line after each use.
a. Open the drain cock valve (S). See Fig. 16.
b. T urn the ON/OFF switch ON.
c. Rock the sprayer back and forth slightly to
drain any moisture in the air line.
d. T urn the ON/OFF switch OFF .
e.
Close the drain cock valve.

13
308–718
Shutdown and Cleanup
Fig. 15
Closed
423 Open
7136A
7092A
Fig. 16
L
K
D
S
Fig. 17 0631
1
Oil here
1
1

14 308–718
Pump Maintenance
For pump maintenance, troubleshooting and/or repair , see Manual 308–781.
Troubleshooting
WARNING
T o reduce the risk of injury , follow the Pressure Relief Procedure on page 7.
System Troubleshooting
PROBLEM CAUSE SOLUTION
Compressor does not start. T rapped 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 .
T ripped thermal overload in motor . Check extension cord. A maximum
length of 25 ft of 12 A WG or 50 ft of
10 A WG extension cord may be
used for 120 Vac, 15A. (A maximum
length of 8 m of 1.5 mm
2
or 15 m of
2.5 mm
2
may be used for 240 V ac,
16A). Allow unit to cool down and
try again.
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.
Have motor serviced.
No material output from pump. Not enough air pressure to pump. Shut of f air at the gun and increase
air pressure to the pump to maxi -
mum. T
urn regulator clockwise to
increase.
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.
Unloader Malfunctions
Unloader unloads too early Replace unloader .
Unloader stutters
Unloader unloads to late

15
308–718
Troubleshooting
PROBLEM CAUSE SOLUTION
No material output from pump
(continued) Air
valve is stalled.
122
7079A
Reset the pump. See Fig.
1. Open air to the gun.
2. T urn the unit of f.
3. Move the reset handle (122) in
the direction of least resistance
(about 15 lb. of force needed).
4. If the reset handle can not be
moved in either direction, the
pump is plugged. Flush the
pump out or stick a wooden
dowel down each of the intakes
to clear it.
5. If the reset handle moved and
the pump still does not pump,
see troubleshooting in pump
manual 308–781.
6. T urn the ON/OFF switch ON
and trigger the gun into the hop -
per until there is a solid stream
of texture material.
Note: If the pump continues to
stall:
1.
Thin the material. See above
2. Clean hose and gun. See below
3. T ry a 1–1/4 in. hose. See below
4. See troubleshooting in pump
manual 308–781.
Gun or nozzle plugged. 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 ma -
terial through the hose with the gun
removed.
Hose plugged or too small. Relieve pressure, flush hose with
clean water and/or try a 1–1/4 in.
hose.
Note: Under normal use the
duck bills and diaphragms will
wear out at 20,000 gallons. If the
material being sprayed has a
stone aggregate the expected
life is 3,000 to 4,000 gallons.
Leaky or damaged duck bills. Clean and inspect duck bills.
Note: Match pump part number
with the correct pump breakdown in
308–781. Not all texture pumps
have the same assembly order .
Pump needs repair . See pump manual 308–781.

16 308–718
Troubleshooting
PROBLEM CAUSE SOLUTION
Material pulses or surges. T riggering too fast. Squeeze trigger slowly to fully open
position
while moving gun quickly in a
circular motion.
Leaky or damaged duck bills. Clean and inspect duck bills.
Note: Match pump part number
with the correct pump breakdown in
308–781. Not all texture pumps
have the same assembly order .
Speed of application too slow
Not enough air pressure to pump. Shut of f air at the gun and increase
air pressure to the pump to maxi -
mum. T
urn 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 is 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 bills. Clean and inspect duck bills.
Note: Match pump part number
with the correct pump breakdown in
308–781. Not all texture pumps
have the same assembly order .
Pump needs repair . See pump manual 308–781.
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 is too high. Decrease air to gun at gun fitting.
Fluid delivery is too low . Increase nozzle size
Increase air pressure to pump and/
or decrease air to gun at gun fitting
T urn fluid knob out on gun. See
spray technique on pg. 10.
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 is too low . Increase air to gun at gun fitting.
Fluid delivery is too high. Decrease nozzle size
Decrease air pressure to pump and/
or increase air to gun at gun fitting
T urn fluid knob in on gun. See
spray techniques on pages 10
and 1 1.

17
308–718
Compressor Repair
WARNING
HOT SURF ACE 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.
1.
Follow the Pressure Relief Procedure on page 2.
2. Fig. 1. Remove hopper (J).
3. Fig. 18. Remove two screws (26A) and loosen two
screws (26B). Move pump (35) out of the way .
4.
Remove filter cover (20).
5. Remove two screws (7).
6. Remove compressor cover (23) and air filter (K).
7. Remove compressor guard (16).
8. Remove grounding screw (36) and two leads (U)
from bottom of switch (9).
Continued on page 18.
Fig. 18 
K18
16
35
20
26A
26B
7
23
76
36
U
9

18 308–718
Compressor Repair
9. Fig. 19. Tip T exSpray horizontal.
10. Loosen hose clamps (28) and pull out hose (31).
11. Remove two screws (76) and saddle-mount
cups (77).
12. Place a piece of cardboard between compressor
and cooler to protect cooler from damage during
step 13.
13. Carefully remove compressor wires while lifting
compressor up and away from cart frame (1).
Compressor Repair
If you are rebuilding the compressor (18), see DeVIL -
BISS manual OEM–4000–A.
Graco of fers repair kits for the two cylinder compres -
sor
. The repair kits are listed in the Accessories.
NOTE: For repair assistance or for compressor ser -
vice center locations, call your Graco distributor or
1-800-888-2468.
Compressor Installation
1. Fig. 18 and 19. Clean air filter (K).
2. Reassemble sprayer in reverse order of
Compressor Removal procedure.
NOTE: See the wiring diagram on page 22.
7081A
Fig. 19
A
76
28
77
31
A

19
308–718
Cooler Repair
WARNING
HOT SURF ACE 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!
1. Follow the Pressure Relief Procedure on
page 2.
2. Loosen the clamp (28) on the hose (29) and
remove the hose from the cooler (27). See Fig. 20.
3. Remove the screws (7) and cooler (27). Clean and
inspect for leaks, dents or plugging with dust. See
Fig. 20.
7082A
27
Fig. 20
A
A
28
29 7

20 308–718
Notes