Graco Magnum SR7 Instruction Manual

Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441
Copyright 2007, Graco Inc. is registered to I.S. EN ISO 9001
311984A
Operation
SR7 Airless Sprayer
- For portable spray applications of architectural paints and coatings -
IMPORTANT SAFETY INSTRUCTIONS.
Read all warnings and instructions in this
manual. Save these instructions.
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Model: 261810, Series A
Specifications
This equipment is not intended for use with flammable or
combustible materials used in places such as cabinet shops
or other “factory” or fixed locations. If you intend to use this
equipment in this type of application, you must comply with
NFPA33 and OSHA requirements for the use of flammable
and combustible materials.
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Maximum Working Pressure: 3000 psi (21 MPa, 207 bar)
Includes:
Gun: SG10
Hose: 1/4 inch x 35-ft. (6.4 mm x 11 m)
Dispense Rate: 0.31 gpm (1.17 lpm)
The manual provided with this
sprayer contains
English, Español and Français.
Visit our website;
http://MAGNUM.Graco.com

Warnings
2311984A
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclama-
tion point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks. Refer
back to these warnings. Additional, product specific warnings may be found throughout the body of this manual
where applicable.
WARNING
FIRE AND EXPLOSION HAZARD
Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help prevent
fire and explosion:
• Use equipment only in well ventilated area.
• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and plastic drop
cloths (potential static arc).
• Sprayer generates sparks. When flammable liquid is used in or near the sprayer or for flushing or
cleaning, keep sprayer at least 20 feet (6 m) away from explosive vapors.
• Keep work area free of debris, including solvent, rags and gasoline.
• Do not plug or unplug power cords or turn lights on or off when flammable fumes are present.
• Ground equipment and conductive objects in work area. Read Grounding instructions.
• If there is static sparking or you feel a shock, stop operation immediately. Do not use equipment
until you identify and correct the problem.
• Keep a fire extinguisher in the work area.
ELECTRIC SHOCK HAZARD
Improper grounding, setup, or usage of the system can cause electric shock.
• Turn off and disconnect power cord before servicing equipment.
• Use only grounded electrical outlets.
• Use only 3-wire extension cords.
• Ensure ground prongs are intact on sprayer and extension cords.
• Do not expose to rain. Store indoors.
SKIN INJECTION HAZARD
High-pressure fluid from gun, hose leaks, or ruptured components will pierce skin. This may look like just
a cut, but it is a serious injury that can result in amputation. Get immediate surgical treatment.
• Do not point gun at anyone or at any part of the body.
• Do not put your hand over the spray tip.
• Do not stop or deflect leaks with your hand, body, glove, or rag.
• Engage trigger lock when not spraying.
• Follow Pressure Relief Procedure in this manual, when you stop spraying and before cleaning,
checking, or servicing equipment.

Warnings
311984A 3
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• Do not exceed the maximum working pressure or temperature rating of the lowest rated system
component. Read Technical Data in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. Read Technical Data in all
equipment manuals. Read fluid and solvent manufacturer’s warnings. For complete information
about your material, request MSDS from distributor or retailer.
• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine Graco
replacement parts only.
• Do not alter or modify equipment.
• Use equipment only for its intended purpose. Call your Graco distributor for information.
• Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.
• Do not kink or overbend hoses or use hoses to pull equipment.
• Comply with all applicable safety regulations.
• Keep children and animals away from work area.
• Do not operate the unity when fatigued or under the influence of drugs or alcohol.
PRESSURIZED ALUMINUM PARTS HAZARD
Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or fluids
containing such solvents in pressurized aluminum equipment. Such use can cause serious chemical
reaction and equipment rupture, and result in death, serious injury, and property damage.
TOXIC FLUID OR FUMES HAZARD
Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or
swallowed.
• Read MSDS’s to know the specific hazards of the fluids you are using.
• Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.
PERSONAL PROTECTIVE EQUIPMENT
You must wear appropriate protective equipment when operating, servicing, or when in the operating
area of the equipment to help protect you from serious injury, including eye injury, inhalation of toxic
fumes, burns, and hearing loss. This equipment includes but is not limited to:
• Protective eye wear
• Clothing and respirator as recommended by the fluid and solvent manufacturer
•Gloves
• Hearing protection
WARNING

Installation
4311984A
Installation
Grounding and Electric
Requirements
Sprayer must be grounded. Grounding reduces the risk
of static and electric shock by providing an escape wire
for electrical current due to static build up or in the event
of a short circuit.
• The 120 Vac sprayers
require a 120 Vac, 60
Hz, 15A circuit with a
grounding receptacle.
• The 230 Vac sprayers
require a 230 Vac, 50
Hz, 10A circuit with a
grounding receptacle.
• Never use an outlet that is not grounded or an
adapter.
• Do not use the sprayer if the
electrical cord has a damaged
ground prong.
• Only use an extension cord with
an undamaged 3-prong plug.
Recommended extension cords
for use with this sprayer:
• 50 ft (15.0 m) 16 AWG (1.0 mm2)
• 100 ft (30.0 m) 14 AWG (1.5 mm2)
Spray gun:ground through connection to a properly
grounded fluid hose and pump.
Fluid supply container:follow local code.
Solvent pails used when flushing: follow local code.
Use only conductive metal pails, placed on a grounded
surface such as concrete. Do not place the pail on a
nonconductive surface, such as paper or cardboard,
which interrupts grounding continuity.
Grounding the metal pail: connect a ground wire to the
pail by clamping one end to pail and other end to ground
such as a water pipe.
Maintaining grounding conti-
nuity when flushing or reliev-
ing pressure: hold metal part of
the spray gun firmly to the side
of a grounded metal pail, then
trigger the gun.
Thermal Overload
Motor has a thermal overload switch to shut itself down
if overheated. If unit overheats, allow approximately 45
minutes for unit to cool. Once cool, switch will close and
unit will restart.
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Smaller gauge or longer extension cords may
reduce sprayer performance.
To reduce risk of injury from motor starting unexpect-
edly when it cools, always turn power switch OFF if
motor shuts down.
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Component Identification
311984A 5
Component Identification
A Power Switch Turns sprayer ON and OFF.
B Prime/Spray Valve • PRIME position (pointing down) directs fluid to prime tube.
• SPRAY position (pointing forward) directs pressurized fluid to paint
hose.
• Automatically relieves system pressure in overpressure situations.
C Pressure control knob Increases (clockwise) and decreases (counter-clockwise) fluid pressure
in pump, hose and spray gun.
C1 Setting Indicator To select function, align symbol on pressure control knob with setting indi-
cator, page engage trigger lock.
D Pump fluid outlet fitting Threaded connection for paint hose.
EInstaClean™fluid filter • Filters fluid coming out of pump to reduce tip plugging and improve
finish.
• Self cleans only during pressure relief.
FPower-Piston™Pump (behind Easy
Access door)
Pressurizes fluid and delivers it to paint hose. Easy Access door permits
quick removal of outlet valve.
G suction tube Draws fluid from paint pail into pump.
H Prime tube (with diffuser) Drains fluid in system during priming and pressure relief.
J Sample Spray Shield Introduces benefits of a spray shield. Blocks paint from surfaces you do
not want to spray.
L Inlet screen Prevents debris from entering pump.
M Storage compartment Provides onboard storage for spray tips and/or tools.
N Quick Release Latch Collapses handle for compact or hanging storage.
P Roller tray/Gun holder/Hose wrap Removable tray can also be used to clean paint roller.
R Paint hose Transports high-pressure fluid from pump to spray gun.
Q Roller attachment Used with spray gun to apply coating directly to surfaces.
S Airless spray gun Dispense fluid through spray tip or roller attachment.
T Tip guard Reduces risk of fluid injection injury.
U Reversible spray tip • Atomizes fluid being sprayed, forms spray pattern and controls fluid
flow according to hole size.
• Reverse unclogs plugged tips without disassembly.
V Gun trigger safety lever (page 7) Prevents accidental triggering of spray gun.
WSpillGuard™Tray Protective tray to set sprayer and paint pail on during operation.
X Practice spray board Instructs user on how to perform basic spraying techniques and provides
surface to practice techniques prior to spraying surfaces.
Y Power Flush attachment Connects garden hose to suction tube for power flushing water-base flu-
ids.
Z Gun fluid filter Filters fluid entering spray gun to reduce tip clogs.

Component Identification
6311984A
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/.
N
J
W
M
R
S
T
U
A
B
C
E
D
F
G
L
H
P
Q
X
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Y
C1
Z
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V

Operation
311984A 7
Operation
Trigger Lock
Always engage the trigger lock when you stop spraying
to prevent the gun from being triggered accidentally by
hand or if dropped or bumped.
Pressure Relief Procedure
Follow this Pressure Relief Procedure whenever you
stop spraying and before cleaning, checking, servicing,
or transporting equipment.
1. Turn power switch OFF and unplug
power cord.
2. Turn Prime/Spray valve to
PRIME to relieve pressure.
3. Hold gun firmly to side
of pail. Trigger the gun
to relieve pressure.
4. Engage trigger lock.
If you suspect the spray tip or hose is clogged or that
pressure has not been fully relieved after following the
steps above, VERY SLOWLY loosen tip guard retaining
nut or hose end coupling to relieve pressure gradually,
then loosen completely. Clear hose or tip obstruction.
Read Unclogging Spray Tip, page 10.
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Trigger Locked Trigger Unlocked
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Leave Prime/Spray valve in the PRIME position
until you are ready to spray again.
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Pressure Control Knob Settings
High Pressure
Spray
Low Pressure
Spray
Prime/
Clean
Rolling
To select function, align symbol on pressure control knob with setting indicator on sprayer.

Setup
8311984A
Setup
1. Unscrew tip and guard assembly
from gun.
2. Uncoil hose and connect one
end to gun.Use two
wrenches to tighten securely.
3. Connect other end of hose
to sprayer.
4. Turn OFF power switch.
5. Turn Pressure Control Knob all
the way left (counter-clock-
wise) to minimum pressure.
Prime and Flush Storage Fluid
Before you use your sprayer for the first time or begin a
new spraying project, you need to prime the sprayer and
flush the storage fluid out of the sprayer.
Oil- or Water-based Materials
1. Make sure power switch is
OFF and sprayer is unplugged.
If hose is already connected, make sure connec-
tions are tight.
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• When spraying water-based materials, flush
the system thoroughly with water.
• When spraying oil-based materials, flush the
system thoroughly with mineral spirits or com-
patible, oil-based flushing solvent.
• To spray water-based materials after spray-
ing oil-based materials, flush the system thor-
oughly with water first. The water flowing out of
prime tube should be clear and solvent-free
before you begin spraying the water-based
material.
• To spray oil-based materials after spraying
water-based materials, flush the system thor-
oughly with mineral spirits or a compatible
oil-based flushing solvent first. The solvent
flowing out of the prime tube should not contain
any water.
• When flushing with solvents, ground pail and
gun. Read Grounding and Electric Require-
ments, page 4.
• To avoid fluid splashing back on your skin or
into your eyes, always aim gun at inside wall of
pail.
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Setup
311984A 9
2. Separate prime/prime tube
(smaller) from suction tube (larger).
3. Place prime tube in waste pail.
4. Submerge suction tube in
water or flushing solvent.
5. Turn Prime/Spray Valve to
PRIME.
6. Plug sprayer in a grounded outlet.
7. Turn power switch ON.
8. Align setting indicator with
Prime/Clean setting on pressure
control knob until pump starts,
page 7.
9. When sprayer starts pumping, flushing solvent and
air bubbles will be purged from system. Allow fluid to
flow out of prime tube, into waste pail for 30 to 60
seconds.
10. Turn power switch OFF.
11. Transfer suction tube to paint
pail and submerge suction
tube in paint.
12. Turn power switch ON.
13. When you see paint coming
out of prime tube:
a. point gun into waste pail,
b. unlock gun trigger lock,
c. pull and hold gun trigger,
d. turn Prime/Spray valve to
SPRAY.
14. Continue to trigger gun into waste pail until you see
only paint coming out of gun.
15. Release trigger. Engage trigger
lock.
16. Transfer prime tube to paint pail
and clip prime tube to suction
tube.
17. If spraying, install tip and guard on gun, page 10
and see Spraying Techniques, page 10.
If rolling, roller setup and Rolling Techniques, begin
on page 14.
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primed with paint.
• If motor continues to run the sprayer is not
properly primed. To reprime repeat step 8.
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Setup
10 311984A
Install Tip and Guard
1. Engage trigger lock.
2. Verify tip and guard parts are assembled in order as
shown below.
3. Screw tip and guard assembly on
gun. Tighten retaining nut.
Spraying Techniques
Preventing Excessive Tip Wear
• Spray should be atomized (evenly distributed, no
gaps at edges). Start at low pressure setting,
increase pressure a little at a time until you see a
good spray pattern, without tails.
• Spray at lowest pressure that atomizes paint.
• If maximum sprayer pressure is not enough for a
good spray pattern, tip is too worn. See Reversible
Spray Tip Selection Chart, page 12.
Adjust Spray Pressure
This sprayer is set up for most airless spraying applica-
tions. Details on tip selection, tip wear, coat thickness,
etc. are provided on page 11.
Align setting indicator with function symbol on Pressure
Control knob, page 7.
• Turning knob to right (clockwise), increases
pressure at gun.
• Turning it left (counter-clockwise), decreases
pressure.
• General spraying instructions are provided in
Getting Started with Basic Spraying Techniques
section of this manual, page 13.
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retaining nut
black rubber gasket and
guard
tip
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metal seat
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Use tip to align seat
in guard.Tip must be pushed
all the way into guard
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If tails persist when spraying at the highest
pressure, a smaller tip is needed or the material
may need to be thinned.
Motor only runs when gun is triggered. Sprayer is
designed to stop pumping when gun trigger is
released.
GOOD
SPRAYPATTERN
TAILSGAPS
ATEDGES
PRESSURE
TOOLOW
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