Graco 245924 A Series Guide

Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441
www.graco.com
Copyright 2003
309584H
Operation and Parts
Texture Gun & Hopper
- For Water-Based Materials Only -
Model 245924 Series A, B, and C
100 psi (7 bar, 0.7 MPa) Maximum Working Air Pressure
60 psi (4.1 bar, 0.41 MPa) Maximum Working Fluid Pressure
Related Manuals
Read warnings and instructions.
309585
309586
ti2620a
ti 2445b

2 309584H
WARNINGS
Equipment Misuse Hazard
Equipment misuse can cause equipment to rupture, malfunction, or start unexpectedly and cause
serious injury.
• Before operating this equipment, read all manuals, tags, and labels including material labels and
instructions.
• Do not expose system to rain. Always store system indoors.
• Do not alter or modify equipment.
• Do not spray cementcious materials.
• Do not exceed maximum working pressure of lowest rated component in your system.
• Check equipment daily. Repair or replace worn or damaged parts immediately.
• To reduce risk of serious injury, including electric shock and splashing fluid in eyes, follow Pressure
Relief Procedure, page 3 before servicing the unit.
• Do not use hoses to pull equipment.
• Route hoses away from traffic areas, sharp edges, moving parts and hot surfaces. Do not expose
Graco hoses to temperatures above 130 F (55 C) or below -35 F (-37 C).
• Store hazardous fluid in an approved container. Dispose of hazardous fluid according to all local,
state and national guidelines.
• Never directly inhale compressed air. Compressed air may contain toxic vapors.
Electric Shock Hazard
To reduce the risk of electric shock:
• Be sure sprayer is adequately grounded through electrical outlet.
• Use only 3-wire, extension cords.
• Make sure ground prongs are intact on sprayer and extension cords.
• Do not operate with cover removed.
• Turn off sprayer. Follow Pressure Relief Procedure, page 3, and unplug unit, before removing any
parts.
•

309584H 3
Pressurized Equipment Hazard
Fluid from gun, leaks or ruptured components can splash in the eyes or on skin and cause serious
injury.
• Follow Pressure Relief Procedure, page 3 when you stop spraying and before cleaning, checking
or servicing.
• Do not point spray gun at anyone; put hand, fingers or rag over nozzle, or stop or deflect leaks with
your hand, body, glove, or rag.
• Wear protective clothing, gloves, and eyewear.
Cleaning Solvent Hazard with Plastic Parts
Use only compatible water-based 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 Technical Data on page of this instruction manual and in all other
equipment manuals. Read fluid and solvent manufacturer’s warnings.
Sprayer Warnings
For sprayer operation and warning information refer to your sprayer or compressor operation manual.
WARNINGS
Pressure Relief Procedure
To reduce the risk of serious bodily injury, includ-
ing electric shock and splashing fluid in eyes, fol-
low this procedure whenever you stop spraying:
1. Shut OFF air source.
2. Disconnect power source.
3. Turn gun air valve ON.
Grounding
To reduce risk of electrical shock, proper
electrical grounding is essential. See your
sprayer or compressor instruction manual and
consult your local electrical codes for detailed
grounding instructions.

Component Identification
4 309584H
Component Identification
D
C
B
M
A
K
G
E
F
F
H
J
N
P
ti2441b
Identifier Component Description
A Air Valve Adjusts air to material mix ratio.
B Flow Adjustment Nut Sets needle position.
C Trigger Engages material flow.
D Trigger Lock Holds trigger open to assist operator during long jobs.
E Material Fill Opening Where mixed material is loaded into hopper. For overhead applications and high walls, posi-
tion hopper on gun with material fill opening facing toward nozzle (J) (front) of gun. For all
other applications, material fill opening should face toward the air valve (A) (back) of gun.
F Handles Provided for operator comfort and relieve operator fatigue during long jobs.
G Hopper Holds material.
H Gun Plug Must be in place when material hose is used with texture pump system. To use hopper,
remove plug and install hopper as described on page 5.
J Nozzle Different sizes available for use with different applications, See Nozzle Selection chart, page
7.
K Hose Plug Must be installed when hopper is used. This feature is not utilized in this application. See
Graco RTX manual for installation and operating instructions for this feature.
M Air Fitting Quick Disconnect used to attach air hose to gun.
N Clamp Secures hopper on gun.
P Gun Plug Clip Secures gun plug to gun.

Basic Operation
309584H 5
Basic Operation
Hopper Installation
1. The Hose Plug must be
securely fastened to bot-
tom of gun when using the
Hopper. Gun Plug must be
removed from top of gun.
.
2. Align notched
opening in base
of hopper to
raised notch on
hopper port of
gun body.
3. Push hopper down, over hopper port as far as it will
go.
4. Fasten clamp.
5. Connect air hose to gun.
6. Install spray nozzle, page
7.
7. Fill hopper with texture
mix.
8. Open air valve.
9. Turn compressor ON.
Close air valve. Adjust air pressure starting at 30-40
psi.
It is easier to remove plug if you first trigger gun.
For overhead applications and high walls, position
the hopper on the gun with the material fill open-
ing facing toward the nozzle (front) of the gun. For
all other applications, material fill opening should
face the air valve (back) of the gun.
ti2699b
ti2644a
ti2449
ti2621a
ti2476
ti2448a

Mixing Material
6 309584H
Mixing Material
Dry Mix - 40 lb (18 kg) bag.
1. Slowly add one 40 lb. (18
kg) bag of texture mate-
rial to 5-6 gallons
(18.9-22.7 liters) of clean
water as instructed on the
bag instructions.
2. Agitate to mix, using a
half-inch, variable speed
drill with mixing paddle, to
a smooth, lump-free con-
sistency.
3. Allow ceiling texture to set
for at least 15 minutes.
Then remix prior to use.
Premix
1. Slowly add approxi-
mately 2 to 4 qts (1.9 to
3.8 liters) of water to a 5
gallon (18.9 liter) bucket
of premix.
2. Agitate to mix, using a
half-inch, variable speed
drill with a mixing pad-
dle, to a smooth,
lump-free consistency.
Correct material mixture is essential to achieve
the desired finish.
Mix the material in a separate container before
pouring it into hopper.
For best results do not use partial bags of
material.
ti2496
ti2497a
ti2493a

Spray Techniques
309584H 7
Spray Techniques
Recommended Nozzle Selection Chart
1Control air volume with gun air valve.
2For more material volume try a larger nozzle.
Adjusting the System
Sufficient fluid output (volume and pressure) and good
atomization is a balance of atomizing air, material
thickness/material flow and nozzle selection. Achieving
the correct balance for your application requires
experimentation to achieve desired results. Keep in
mind these important points when adjusting gun:
1 Select proper nozzle for your application. See
Nozzle Selection Chart. Remember, the larger the
nozzle, the heavier the pattern.
2 Start with gun air flow
valve completely open. If
needed, slowly close
gun air flow until you get
a good spray pattern.
3 Adjust air flow
adjustment nut and
air valve to achieve
uniform, round
spray pattern. It
may be necessary
to change spray
nozzles to achieve
the desired spray
pattern.
To Get Less Material
Try one or a combination of these methods:
• Open air valve.
• Turn gun flow adjustment nut to decrease flow,
counter-clockwise.
• Use smaller nozzle.
To Get More Material
Try any one or a combination of these methods:
• Close air valve.
• Turn gun flow adjustment nut to increase flow,
clockwise.
• Use thinner material mixture.
• Use a larger nozzle.
For Continuous Spraying
Use trigger lock to hold trigger open and reduce fatigue.
Check Material Consistency Periodically
Check and thin material as needed to maintain proper
consistency. The material may thicken as it sits and slow
down production. Agitate periodically.
Application Nozzle Size2Air Volume1
Simulated
Acoustic
6 mm, white
(fine to medium)
8 mm, gray
(coarse)
medium to high
Orange peel 4 mm, beige
6 mm, white
medium to high
Splatter coat 6 mm, white
8 mm, gray
low to medium
Knockdown 8 mm, gray
12 mm, black
low
ti2448a
ti2475a
• When adjusting flow nut, release trigger, then
adjust.
• If adjusting while triggered, needle will turn
but provide no adjustment.
• If nut will not turn, check to see if it is either
set to maximum adjustment or there is
material on threads. Clean threads as
needed.
• Test spray pattern on cardboard. Hold gun 18
to 24 in. (45.7 to 60.9 cm) from surface. Using
a circular motion, overlap each stroke.

Cleanup
8 309584H
Cleanup
When you have finished spraying
1. Shut off compressor. Disconnect air line from gun.
2. Drain remaining material into a bucket until most of
the texture material is out of hopper.
3. Fill hopper with clean water. Remove nozzle from
gun and allow water to flow through and out of gun.
4. Flush until gun is clean.
5. Remove hopper from gun and finish cleaning all
components. A soft brush may be used to help
loosen any dried on material from surface.
6. Connect air line to gun. Turn on compressor. Open
gun air valve, forcing air through tip to clear out any
remaining material.
7. Disconnect compressor.
To improve working condition for future use, after
cleaning, apply a few drops of light oil to:
• air hose quick disconnect
• material hose connections
• flow adjustment on gun
Be sure to keep air passages in needle clean and
free of material.

Troubleshooting
309584H 9
Troubleshooting
Problem Cause Solution
Material will not flow from hopper • Material too thick.
• Not enough air
• Gun adjustment set too low
• Nozzle too small
• Gun is plugged
• Not enough material in hopper.
• Thin material
• Open gun air valve more
• Increase trigger travel
• Increase nozzle size
• Clean gun
• Add material
Pattern too fine. • Material too thin
• Air pressure too high
• Gun needle travel too low
• Nozzle too small.
• Thicken
• Close gun air valve partially
• Increase
• Replace nozzle with larger size
Pattern too course. • Material too thick.
• Air pressure too low.
• Nozzle to large.
• Thin material
• Open gun air valve more
• Replace nozzle with smaller size
Gun will not shut off • Worn nozzle or needle
• Nozzle not on all the way
• Debris in needle passage
•Relieve Pressure, page 3.
Replace worn parts.
• Tighten completely.
•Relieve Pressure, page 3.
Clean.
Fluid leaking at Flow Adjustment Nut Damaged seal. Relieve Pressure, page 3. Replace
seal.
Fluid leaking out of either plug • Missing or damaged o-rings
• Gun damaged
•Relieve Pressure, page 3.
Replace o-ring
• Replace gun
Needle adjustment won’t adjust • Dirty threads
• Nozzle not on gun
• Needle triggered
• Clean threads
• Put nozzle on gun
• Adjust when trigger not pulled
Material leaking out around gun/hop-
per connection
• Clamp not tight
• Damaged gun/hopper
• Debris between gun/hopper
• Tighten
• Check for damage. Replace.
• Remove hopper from gun. Clean.
Replace hopper.

Parts
10 309584H
Parts
Technical Data
5
2b
4 (a-b-c-d)
2a
1
3a
3d
3c 3b
3f
2c
3e
6
9
7
8
11
11
12
10
13
Ref
No. Part No. Description Qty.
1 277138 BODY, gun (series C) 1
2 234162 KIT, plugs, includes 2a, 2b and 2c 1
2a PLUG, hose port
2b PLUG, hopper port
2c O-RING
3 234159 KIT, needle repair, includes 3a, 3b, 3c,
3d, 3e, and 3f 1
3a NEEDLE includes o-ring
3b GUIDE, spring, includes o-ring
3c SPRING
3d NUT, flow adjustment
3e O-RING
3f O-RING
4 234153 KIT, nozzle, includes 4a, 4b, 4c, 4d 1
4a 234538 NOZZLE, fine, beige
4b 234277 NOZZLE, small, white
4c 234278 NOZZLE, medium, gray
4d 234279 NOZZLE, large, black
5 234225 KIT, hopper 1
6 234188 CLAMP 1
7 15F913 TRIGGER (series C) 1
8 15B168 TRIGGER LOCK 1
9 15B565 AIR VALVE 1
10 118717 PIN, clevis 1
11 107243 WASHER, nylon 2
12 115999 RING, retaining 1
13 287967 CLIP, plug, gun 1
Trigger and Gun Body Kit 249640 must be ordered to replace
series A or series B Trigger or Gun Body.
Air Consumption 3.5-11 cfm at 15 to 100 psi
Weight 35 oz (1600 g)