Graco Magnum TexFinish 246186 Instruction Manual

Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441
Copyright 2003, Graco Inc. is registered to I.S. EN ISO 9001
309863A
Operation
Interior Texture Sprayers
TexFinish™ Rental Texture
Sprayer
For Water-Based Materials Only
Model: 246186
55 psi (3.8 bar) Maximum Fluid Working Pressure
Read warnings and instructions.
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U
S
C
Conforms to ANSI/UL
standard 1450

2309863A
WARNINGS
Fire and Explosion Hazard
Improper grounding, poor ventilation, open flames or sparks can cause a hazardous condition and result
in fire or explosion and serious injury.
• The system is for use with water-based materials only. Only use fluids compatible with the
equipment. Refer to Technical Data of all equipment manuals. Read fluid and solvent manufacturers
warnings.
• Ground the equipment. See Grounding and Electrical Requirements, page 5.
• 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 equipment until you identify
and correct the problem.
• Keep work area free of debris, including solvent, rags and gasoline.
• Comply with all applicable state and national fire, electrical and safety regulations.
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 cementitious 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 on page 5 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 haz-
ardous 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.

309863A 3
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. Improper installation of ground-
ing plug will result in a risk of electrical shock, fire or explosion that could cause serious injury or
death.
• Do not operate with cover removed.
• Turn off sprayer. Follow Pressure Relief Procedure, page 5, and unplug unit, before removing any
parts.
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 5 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.
• Before adding material to hopper, install burp guard. When only a small
amount of material remains in the hopper, the burp guard prevents material
from shooting out when the unit is turned off. This material could splash in
the operator’s eyes or on skin, or into the air.
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 15 of this instruction manual and in all other
equipment manuals. Read fluid and solvent manufacturer’s warnings.
WARNINGS
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CAUTION
Water or material remaining in unit when temperatures are below freezing can damage
motor and/or delay pump startup. Do not allow unit to freeze.
To insure water and material are completely drained out of unit:
1. Remove material line from sprayer.
2. Tip sprayer up as shown.
Before adding material or starting unit in cold weather, run warm water through pump.
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Component Identification
4309863A
Component Identification
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P
KN
aa
B
A
D
E
F
J
G
R
L
S
T
cc
bb
U
W
M
Y
Z
Item Component Item Component
A Air hose outlet P Nozzle storage
B Material hose outlet R Hose plug
D Hopper gun/spray gun selector switch S Gun plug
E ON/OFF switch T Material thickness gauge
F Air Compressor (inside) U Nozzle (3 sizes available)
G Material/air hose W Gun air valve
J Texture spray gun (manual 309584) Y Burp guard
K Material Hopper Z Hour meter
L Graco RotoFlex™ pump (inside) aa Hopper fitting (fluid inlet)
M Hose rack/cord wrap bb Hopper clamp
N Gun hopper (1-1/2 gallon) cc Hose clip

Preparation
309863A 5
Preparation
Pressure Relief Procedure
To reduce risk of injury, follow this procedure
whenever you see this symbol throughout this
manual, Also, perform this procedure whenever
you:
• stop spraying.
• check or repair any part of this system.
• install or clean spray nozzle.
1. Turn Power Switch OFF.
2. Trigger gun into material
hopper.
3. Open gun air valve.
Grounding and Electrical Requirements
This sprayer must be grounded. Grounding reduces the
risk of electrical shock by providing an escape wire for
the electrical current. The sprayer cord includes a
grounding wire with an appropriate grounding plug. The
plug must be plugged into an outlet that is properly
installed and grounded in accordance with all local
codes and ordinances.
Check with a qualified electrician or serviceman if
grounding instructions are not completely understood,
or if in doubt as to whether the product is properly
grounded. Do not modify plug provided; if it will not fit
the outlet, have proper outlet installed by a qualified
electrician.
120V AC Systems
• This equipment
requires a 120V AC,
60 Hz, 15A circuit
with a grounding
receptacle. Do not
use an adapter with
this product.
Extension Cords
• Use only an extension cord with an undamaged,
3-prong plug.
• For 25 to 50 ft (7.6 to 15.2 m) cords, use 3-wire, 14
AWG (1.5 mm2) minimum.
• For up to 100 ft. (30.48 m) cord, use 3-wire, 12 AWG
(2.5 mm2) minimum.
Auxiliary Air Compressor
Do not use an auxiliary air compressor with this spray
system.
Generator Requirements
3500 W (3.5 KW) minimum.
Hose Size and Length
The system comes with a hose set consisting of a 3/4 in.
ID x 25 ft (25 mm x 7.6 m) material hose and a 3/8 in-ID
air hose.
Do not use more than 25 ft. (7.6 m) of material hose.
WARNING
page 2 and 3
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WARNING
page 2 and 3
CAUTION
Air hose fittings can get hot! Allow sprayer to cool down
15 minutes before removing air hose.
grounding prong
grounded
outlets

Setup
6309863A
Setup
Texture Spraying
Material Hopper
1. Connect air hose and
material hose to
sprayer air and mate-
rial hose outlets.
2. Connect air hose to
gun.
3. Open air valve.
4. Connect material hose
to gun.
5. Install spray nozzle.
See Recommended
Nozzle Selection
Chart, Page 10.
6. Fill material hopper
with 1 gallon of water.
7. Turn hopper gun/spray
gun selector switch to
SPRAY GUN.
Important
• If you are going to stop spraying for more than 5 minutes, turn sprayer off to prevent shortened pump hose life.
• Do not allow material to dry inside pump, hoses, gun or spray system.
WARNING
page 2 and 3
When using material
hopper, insert Gun
Plug in top of gun.
Make sure both plug
tabs are securely
snapped into place.
Hose Plug must be
removed from bottom
of gun.
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Setup
309863A 7
8. Turn power switch ON.
9. Close gun air valve.
10. Point gun into waste bucket and pull trigger to pump
water through the system. Continue to trigger gun
until material hopper is empty.
11. Install burp guard.
12. Add pre-mixed texture mix
to material hopper. See
Mixing Material, page 9.
13. Continue to trigger gun and spray into waste bucket
until a steady stream of material sprays out of gun.
14. Release trigger. To
achieve uniform
spray pattern, adjust
air valve and flow
adjustment nut on
gun. If you do not
achieve the desired
pattern, change nozzles, page 10.
Hopper Attachment
1. Connect air hose to sprayer.
2. Connect air hose to gun.
3. Clip material hose to
air hose.
4. Slide hopper on top of
gun, and tighten clamp.
5. Install spray nozzle.
Page 10.
6. Fill hopper attach-
ment with pre-mixed
texture. See Mixing
Material, page 9.
WARNING
page 3
Fluid flow will be restricted if the material hose is
kinked.
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T
I2698a
The Hose Plug must be
securely fastened to
bottom of gun when
using the Touch Up
Hopper. Gun Plug must
be removed from top of
gun.
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Setup
8309863A
7. Turn hopper
gun/spray gun
selector switch to
HOPPER GUN.
8. Open gun air valve.
9. Turn power switch ON.
10. To achieve uniform
spray pattern, adjust
air valve and flow
adjustment nut on
gun. If you do not
achieve the desired
spray pattern, change
nozzles, page 10.
CAUTION
Failure to change selector switch to Hopper Gun when
using hopper gun will damage pump hose.
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Mixing Material
309863A 9
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.
4. After texture material is thoroughly mixed, gently set
ball end of Material Thickness Gauge on surface of
mixture.
5. Observe the ball on the
material. When the mate-
rial is thin enough to spray
the ball will sink com-
pletely into the mixture.
6. If the ball does not sink
completely into the mix-
ture within 10 seconds,
add more water, agitate
and try test again.
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.
3. After texture material is thoroughly mixed, gently set
ball end of Material Thickness Gauge on surface of
mixture.
4. Observe the ball in
material. When the
material is thin
enough to spray the
ball will sink com-
pletely into the mix-
ture.
5. If the ball does not sink completely into the mixture
within 10 seconds, add more water, agitate and try
test again.
Correct material mixture is essential. The pump
will not operate if the mixture is too thick.
Mix the material in a separate container before
pouring it into hopper.
Use Material Thickness Gauge to determine
mixture is thin enough to spray.
*The Material Thickness Gauge will only
determine if the material is thin enough to pass
through the pump. For some applications or for
higher speed spraying, your mixture may need to
be thinner.
For best results do not use partial bags of
material.
For an accurate test, be sure gauge is completely
dry and clean every time it is used.
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For an accurate test, be sure gauge is completely
dry and clean every time it is used.
ADD WATER
READY
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ADD WATER
READY
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Spray Techniques
10 309863A
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 atomozing 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:
• Start sprayer with gun air flow valve completely
open. If needed, slowly close gun air flow until you
get a good spray pattern. Use minimum amount of
air at spray gun to achieve proper spray pattern and
to minimize bounce back.
+ Test spray pattern on cardboard. Hold gun 18 to
24 in. (45.7 to 60.9 cm) from surface. Use this
spraying distance for most applications.
• Select proper nozzle for your application. See
Nozzle Selection Chart. Remember, the larger the
nozzle, the heavier the pattern.
• Air and material flow adjustments are made at the
gun on all units.
+ Opening air valve increases air flow through gun,
which decreases texture material flow through
pump.
+ Closing air valve decreases air flow through gun,
which increases texture material flow through pump.
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:
•Closeairvalve.
• Turn gun flow adjustment nut to increase flow,
clockwise.
• Use thinner material mixture.
• Use a larger nozzle.
Preventing Material Surge at Gun Trigger
Pressure will build up in the system when you stop
triggering the gun. To prevent material surge at initial
gun triggering:
• Point gun away from surface you are spraying when
you first pull trigger.
• When you first start to spray, hold the gun away from
the surface and gradually work your way closer to it.
• Keep gun moving.
• After you begin spraying, trigger the gun as little as
possible.
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 6 mm, white medium to high
Spatter coat 6 mm, white
8 mm, gray
low to medium
Knockdown 8 mm, gray
12 mm, black
low

Shutdown and Cleanup
309863A 11
Shutdown and Cleanup
Texture Spraying
Material Hopper
When you have finished spraying:
1. Open gun air valve.
2. Turn hopper gun/spray gun
selection switch to SPRAY
GUN.
3. Turn power switch ON.
4. Close gun air valve.
5. Trigger gun into bucket until most of texture mix is
pumped out.
6. Fill material hopper with 2-4 gallons of clean water.
7. Spray inside material
hopper to circulate water
through gun and hose.
While circulating water,
use gun to clean material
hopper.
8. Partially open gun air
valve to use air to
achieve better cleaning
results.
9. Spray water into a waste bucket to empty material
hopper.
10. Turn power switch OFF.
11. Open gun air valve. Relieve Pressure, page 5.
Keep pump and hose clean when switching between simulated acoustic, knockdown and orange peel
applications. A dirty pump can release particles of texture into the finish.
CAUTION
• Turn off sprayer if you are going to stop spraying for 5 minutes or longer.
• Before removing material hose be sure pressure is relieved and material is not in hose.
• To keep unit in good operating condition, always clean it thoroughly and prepare it properly for storage.
WARNING
page 2, 5.
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A soft brush can be used to loosen dried on
material.
CAUTION
If water freezes in unit, damage may occur. In cold
weather store system where it will not freeze.
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Shutdown and Cleanup
12 309863A
Removing Material Hopper from Sprayer
The material hopper can be removed for cleaning. To
remove material hopper:
1. Loosen bottom
fitting.
2. Lift material hop-
per straight up, off
unit.
3. Plug opening on
bottom of mate-
rial hopper with
your hand.
4. Take hopper to cleaning area.
To r e a s s e m b l e :
1. Place material hop-
per on sprayer,
aligning fitting to
sprayer.
2. Hand tighten fitting.
Hopper Attachment
When you have finished spraying
1. Shut off compressor. Disconnect air line from gun.
2. Drain 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. Turn power switch ON.
6. Open gun air valve.
7. Trigger gun to blow air through tip, clearing out any
remaining material.
8. Remove hopper from gun and finish cleaning all
components. A soft brush may be used to help
loosen any dried on material from surface.
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
Transporting the Sprayer
The handle and hopper can be removed from the
sprayer for storage or transporting.
To remove hopper from sprayer, follow the procedure
above.
To remove the handle:
1. Loosen the two (2) wing-nut screws on either side of
the handle.
2. Squeeze the handle together.
3. Remove.
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Be sure to keep air passages in needle clean and
free of material.
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Troubleshooting
309863A 13
Troubleshooting
Pressure Relief, page 5
Problem Cause Solution
Sprayer won’t run Power switch not on Turn switch on.
No power at wall outlet Check outlet by plugging in another
appliance. If appliance does not
work, try another outlet.
Wrong size generator Use a 3500 watt or larger generator.
Refer to Generator Requirements,
page 5
Too many items on same circuit Unplug other items from circuit
Extension cord too long or wrong
gauge
Use a different extension cord. Refer
to Grounding and Electric Require-
ments, page 5
Breaker tripped Reset breaker
Pump won’t pump material Air lock Open air valve on gun
Selector switch in wrong position Move selector switch to correct posi-
tion for application
Mix too thick Add water to thin material. Use Mate-
rial Thickness Gauge.
Loose fittings Check and retighten all fittings
Plugged gun Relieve Pressure, page 5. Remove
gun from hose. Clean gun.
Pump hose worn out Replace hose. Recommended hose
replacement - after every 40 hours of
operation.
Pump cold Move pump to warm room and allow
it to warm up or run hot water through
sprayer.
Material runs out of bottom of sprayer Pump hose worn out Replace hose
Loose fittings Check and retighten all fittings
No air from compressor Gun air valve closed Open gun air valve
Low voltage Check extension cord length and
gauge. Replace if different than rec-
ommended. Refer to Grounding and
Electrical Requirements, page 5.
Gun needle plugged Clean needle and retry.
Worn compressor Replace compressor. Contact a qual-
ified Graco Service Center.
Lines not connected Check all quick disconnect connec-
tions to gun and hoses
Damaged hose Replace hose

Troubleshooting
14 309863A
Speed of application slow or slower Material too thick Thin material.
Nozzle too small Change nozzles to a larger size. See
Recommended Nozzle Selection
Chart, page 10.
Too much air being used. Partially close gun air valve to reduce
air flow.
Pump hose worn Replace hose.
Plugged or dirty gun Relieve Pressure, page 5. Clean
gun.
Kinked hose Unkink hose.
Gun adjustment set too low Increase flow adjustment with flow
adjustment nut.
Intermittent flow/sputtering Hopper connection not tight Check gasket. TIghten connection.
Debris in system Clean
Quick disconnect does not stay con-
nected.
Dirty or corroded fitting Clean thoroughly. Soak in oil. Apply a
few drops of light oil.
Gun will not shut off Worn nozzle or needle. Relieve Pressure, page 5. Replace
worn parts.
Debris in needle passage Relieve Pressure, page 5. Clean.
Fluid leaking at flow adjustment nut Damaged seal. Relieve Pressure, page 5. Replace
seal.
Fluid leaking out of either plug Missing or damaged o-rings Relieve Pressure, page 5. Replace
o-rings.
Gun damaged Replace gun
Flow adjustment won’t adjust Dirty threads Clean threads
Nozzle not on gun Put nozzle on gun
Problem Cause Solution

Technical Data
309863A 15
Technical Data
*Measured while spraying at 1 m.
**Measured per ISO-3744
Main unit power requirements. . . . . . . . . . . . . . . . . . . . . . 120V AC, 60 hz, 15A, 1 phase
Maximum fluid working pressure . . . . . . . . . . . . . . . . . . . 55 psi, (3.8 bar)
Maximum air working pressure . . . . . . . . . . . . . . . . . . . . . 38 psi (2.6 bar)
Compressor specifications . . . . . . . . . . . . . . . . . . . . . . . . Universal motor thermally protected, oil-less
Compressor air displacement . . . . . . . . . . . . . . . . . . . . . . 4.5 displacement scfm at 30 psi
Generator required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3500 w minimum
Electric Motor
Pump motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Capacitor start AC 2.8 amp/ 1/3 hp AC, open frame
Compressor motor . . . . . . . . . . . . . . . . . . . . . . . . Universal AC 10.5 amp
Power Cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 AWG, 3 wire, 25 ft.
Material hopper capacity. . . . . . . . . . . . . . . . . . . . . . . . . . Sprayer Material Hopper: 6 gallons
Gun material hopper: 1.5 gallon
Maximum delivery with texture . . . . . . . . . . . . . . . . . . . . . 0.75 GPM
Dimensions:
Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 in. (584 mm) with handle
Width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 in. (584 mm)
Height . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 in. (991 mm)
Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 lbs (34 kg)
Wetted parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . brass, aluminum, plastic
Sound data
Sound pressure level* . . . . . . . . . . . . . . . . . . . . . 83.2 dB(A)
Sound power level**. . . . . . . . . . . . . . . . . . . . . . . 97.5 dB(A)
Storage Temperature Range. . . . . . . . . . . . . . . . . . . . . . . 35°F - 160°F (1.6°C - 71°C)
Operating Temperature Range . . . . . . . . . . . . . . . . . . . . . 40°F - 115°F (4°C - 46°C)
Gun:
Maximum Working Pressure . . . . . . . . . . . . . . . . 60 psi (4.137 bar)
Air Maximum Working Pressure . . . . . . . . . . . . . 100 psi (6.895 bar)
CFM Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5 - 11 CFM
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 lbs (500 grams)

Limited Warranty
16 309863A
Limited Warranty
Graco warrants to the original purchased (other than for purposes of resale or rental) all equipment manufactured by Graco and bearing its name
to be free from defects in material and workmanship if operated in accordance with Graco’s printed recommendations and instructions. This
warranty applies for one year from the date of purchase.
This warranty does not cover and Graco shall not be liable for general wear and tear, or any malfunction, damage, or wear caused by improper
use, accidents, user negligence, use of non-Graco component parts or service or repair performed by anyone other than a Graco authorized
service center.
IMPLIED WARRANTIES, INCLUDING THOSE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED TO ONE
YEAR FROM THE DATE OF ORIGINAL PURCHASE.
GRACO SHALL NOT IN ANY EVENT BE LIABLE FOR INCIDENTAL, INDIRECT, OR CONSEQUENTIAL LOSS, DAMAGE OR EXPENSE OF
ANY KIND, WHETHER FROM BREACH OF THIS WARRANTY OR ANY OTHER REASON. 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.
To make a claim under this warranty, return the product with proof of purchase, transportation prepaid, to any Authorized Graco Service Center.
Graco’s Authorized Service Center, at its option, will either repair or replace the product and return it to you, postage, prepaid. To find the nearest
Graco Authorized Service Center call 1-888-541-9788 or visit our website at www.Graco.com
This warranty gives you specific legal rights and you may also have other rights which may vary from state to state.
All written and visual data contained in this document reflects the latest product information available at the time of publication.
Graco reserves the right to make changes at any time without notice.
Sales Offices: Minneapolis, Detroit
International Offices: Belgium, Korea, Hong Kong, Japan
PRINTED IN USA 309863 3/2003