Magnum 261800 Use and care manual

Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441
Copyright 2007, Graco Inc. is registered to I.S. EN ISO 9001
312004B
Repair and Parts
Project Painter™5, Project Painter™7,
SR™7, ProX7™& ProX9™Airless Sprayers
- For portable spray applications of architectural paints and coatings -
(See specifications, page 2.)
Project Painter 5 and Project Painter 7 ONLY. Use
water based or mineral-spirit type material only. Do
not use materials having flash points lower than 70°F
(21°C). For more information about your material
request MSDS from distributor or retailer.
MAGNUM ProX9
Model: 261820
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M AGNUM SR7
MAGNUM Project
Model: 261800 Model: 261805
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Model: 261810
MAGNUM Project
Painter 7
M AGNUM ProX7
Model: 261815
Painter 5
Visit our website;
http://MAGNUM.Graco.com
IMPORTANT SAFETY INSTRUCTIONS.
Read all warnings and instructions in this manual.
Save these instructions. See page 2 for model and
series information including dispense rate, recom-
mended hose length, guns, and maximum working
pressure.

Specifications
2312004B
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 NFPA 33 and OSHA requirements for the use of flammable and combustible materials.
Model Name Series
Dispense
Rate gpm
(lpm)
Hose Length and
Diameter
Gun
Model
Maximum Working
Pressure
PSI MPa bar
MAGNUM Project
Painter 5 A
0.24 gpm
(0.91 lpm)
1/4 in. x 25 ft
(6.4 mm x 7.5 m) SG10 2800 19 193
MAGNUM Project
Painter 7 A
0.31 gpm
(1.17 lpm)
1/4 in. x 35 ft
6.4 mm x. 11 m) SG10 3000 21 207
MAGNUM SR7 A
0.31 gpm
(1.17 lpm)
1/4 in. X 35 ft
(6.4 mm x 11 m) SG10 3000 21 207
MAGNUM ProX7 A
0.34 gpm
(1.28 lpm)
1/4 in. X 50 ft
(6.4 mm x 15 m) SG20 3000 21 207
MAGNUM ProX9 A
0.38 gpm
(1.44 lpm)
1/4 in. X 50 ft
(6.4 mm x 15 m) SG20 3000 21 207

Warnings
312004B 3
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
4312004B
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
312004B 5
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.
• This sprayer requires
a 120 Vac, 60 Hz,
15A 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
continuity when flushing or
relieving 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.
Smaller gauge or longer extension cords may
reduce sprayer performance.
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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
6312004B
Component Identification
Project Painter 5
AAllControl™• STORAGE: for long term or overnight shutdown and stor-
age.
• OFF: turns motor off for short term shutdown and
relieves system pressure.
• PRIME/CLEAN PUMP: turns on motor and directs fluid
to prime tube.
• ROLL: directs low pressure fluid to roller (when used)
• PRIME/CLEAN GUN & HOSE: directs fluid to gun and
hose.
• LOW SPRAY to HIGH SPRAY: directs fluid to spray gun.
B Pump fluid outlet fitting Threaded connection for paint hose.
C Suction tube Draws fluid from paint pail or hopper into pump.
D Prime tube (with diffuser) Drains fluid in system during priming and pressure relief.
E Inlet screen Prevents debris from entering pump.
E1 Inlet screen handle Aids in the installation and removal of the inlet screen.
F Hopper cover Prevents debris from entering hopper.
G Pour spouts Directs paint out of hopper and back into paint container.
H Hopper 2.5 gal. (9.5 L) capacity hopper that holds paint.
J Tip holder Storage for 2 spray tips.
K Hopper handle Press and turn handle to allow access to hopper and paint
tray.
L Paint tray Built in paint tray to rest roller attachment when not in use.
M Disposable hopper liner Fits directly in hopper and is disposable for simple cleanup.
N Practice Spray Board Instructs user on how to perform basic spraying techniques
and provides surface to practice techniques prior to spraying
surfaces.
PPower Flush™attachment Connects garden hose to suction tube for power flushing
water-base fluids.
R Paint hose Transports high-pressure fluid from pump to spray gun.
S Airless spray gun Dispenses fluid.
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.
• When reversed, unclogs plugged tips without disassem-
bly.
V Gun fluid filter Filters fluid entering spray gun to reduce tip clogs.
W Roller attachment Attaches to spray gun for pressure rolling directly on
surfaces.
X Gun trigger safety lever (page 14) Prevents accidental triggering of spray gun.

Component Identification
312004B 7
B
C
H
F
G
A
J
D
E1
G
K
N
Bottom view and
p
osition for direct immersion mode
R
S
TU
W
L
P
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V
X
M
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Component Identification
8312004B
Component Identification
Project Painter 7
AAllControl™• STORAGE: for long term and overnight shutdown and storage.
• OFF: turns motor off for short term shutdown and relieves system
pressure.
• PRIME/CLEAN PUMP: turns on motor and directs fluid to prime
tube.
• ROLL: directs low pressure fluid to roller (when used)
• PRIME/CLEAN GUN & HOSE: directs fluid to gun and hose.
• LOW SPRAY to HIGH SPRAY: directs fluid to spray gun.
B Pump fluid outlet fitting Threaded connection for paint hose.
C Suction tube Draws fluid from paint pail into pump.
D Prime tube (with diffuser) Drains fluid in system during priming and pressure relief.
E Inlet screen Prevents debris from entering pump.
F Pail hanger For transporting pail by its handle.
G Roller tray/Gun holder/Hose Wrap Removable tray can also be used to clean paint roller.
H Quick Release Latch Collapses handle for compact or hanging storage.
J Storage compartment Provides onboard storage for spray tips and/or tools.
L Sample spray shield Introduces benefits of a spray shield. Blocks paint from surfaces you do
not want to spray.
MSpillGuard™tray Protective tray to set sprayer and paint pail on during operation.
N Practice spray board Instructs user on how to perform basic spraying techniques and provides
surface to practice techniques prior to spraying surfaces.
PPower Flush™attachment Connects garden hose to Suction tube for power flushing water-base
fluids.
R Paint hose Transports high-pressure fluid from pump to spray gun.
S Airless spray gun Dispenses fluid.
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.
• When reversed, unclogs plugged tips without disassembly.
V Gun fluid filter Filters fluid entering spray gun to reduce tip clogs.
W Roller attachment Attaches to spray gun for pressure rolling directly on surfaces.
X Gun trigger safety lever (page 14) Prevents accidental triggering of spray gun.

Component Identification
312004B 9
B
H
G
L
C
D
E
F
J
A
R
S
T
U
W
N
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V
X
P
M
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Component Identification - SR7
10 312004B
Component Identification - SR7
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
indicator, page 15.
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 14) 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
fluids.
Z Gun fluid filter Filters fluid entering spray gun to reduce tip clogs.

Component Identification - SR7
312004B 11
/&&
/.
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
Z
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Component Identification ProX7 & ProX9
12 312004B
Component Identification ProX7 & ProX9
A Airless spray gun Dispenses fluid.
B Power switch Turns sprayer ON and OFF.
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
indicator, page 15.
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.
FProX Power-Piston™Pump (behind Easy
Access door, not shown)
Pumps and pressurizes fluid and delivers it to paint hose.
F1 Easy Access door Easy Access door permits quick access to outlet valve. To remove door,
insert flat blade of screwdriver into slot on the bottom of the door (as
shown on page 13).
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 Prime/Spray valve • In PRIME position (pointing down) directs fluid to prime tube.
• In SPRAY position (pointing forward) directs pressurized fluid to paint
hose.
• Automatically relieves system pressure in overpressure situations.
K Storage compartment Provides onboard storage for spray tips and/or tools.
L Inlet screen Prevents debris from entering pump.
M Paint hose Transports high-pressure fluid from pump to spray gun.
NFold-n-Store™Handle Used to fold cart frame for hanging on wall.
P Practice Spray Board Instructs user on how to perform basic spraying techniques and provides
surface to practice techniques prior to spraying surfaces.
Q Tip guard Reduces risk of fluid injection injury.
R Reversible spray tip • Atomizes fluid being sprayed, forms spray pattern and controls fluid
flow according to hole size.
• Reverse unclogs plugged tips without disassembly.
S Gun trigger safety lever (page 14) Prevents accidental triggering of spray gun.
T Gun fluid inlet fitting Threaded connection for paint hose.
U Power Flush attachment Connects garden hose to suction tube for power flushing water-base
fluids.
V Gun fluid filter Filters fluid entering spray gun to reduce tip clogs.
W Hose wrap bracket Stows paint hose.
X Pail hanger For transporting pail by its handle.
YSpillGuard™tray Protective tray to set sprayer and paint pail on during operation.
Z Sample spray shield Introduces benefits of a spray shield. Blocks paint from surfaces you do
not want to spray.
AA QuickAccess™Inlet Permits quick access to inlet valve to clear debris (ProX9 only).

Component Identification ProX7 & ProX9
312004B 13
J
ED
X
B
K
W
F
C
G
L
H
N
Y
Z
Q
R
A
S
T
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M
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V
P
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F1
U
AA
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General Repair Information
14 312004B
General Repair Information
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 instructions in the Sprayer
or Gun Operation manual.
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SG10 Gun SG10 Gunti8922a
Trigger Locked Trigger Unlocked
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SG20 Gun SG20 Gun Leave Prime/Spray valve in the PRIME position
until you are ready to spray again.
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General Repair Information
312004B 15
AllControl™Settings
STORAGE - long term and
overnight shutdown and storage
HI SPRAY - uses high pressure
to direct fluid to spray gun
OFF - turns motor off for short
term shutdown and relieves
system pressure
PRIME/CLEAN PUMP - turns
motor on and directs fluid to
prime tube
ROLL - directs low pressure
fluid to roller (when used)
PRIME/CLEAN GUN & HOSE -
directs fluid to gun and hose
LOW SPRAY - uses low pressure
to direct fluid to spray gun
SETTING INDICATOR -
selects function
TIA
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.

General Repair Information
16 312004B
• Keep all screws, nuts, washers, gaskets, and electri-
cal fittings removed during repair procedures. These
parts usually are not provided with replacement kits.
• Test repairs after problems are corrected.
• If sprayer does not operate properly, review repair
procedure to verify you did it correctly. See Basic
Troubleshooting, page 17 and Advanced Trouble-
shooting, page 21.
• Overspray may build up in the air passages.
Remove any overspray and residue from air pas-
sages and openings in the enclosures whenever
you service sprayer.
• Do not operate the sprayer without the cover in
place. Replace if damaged. Covers direct cooling air
around motor to prevent overheating.
Flammable materials spilled on hot, bare, motor
could cause fire or explosion. To reduce risk of burns,
fire or explosion, do not operate sprayer with cover
removed.
To reduce risk of serious injury, including electric
shock:
• Do not touch moving or electric pars with fingers or
tools while testing repair.
• Unplug sprayer when power is not required for test-
ing.
• Install all covers, gaskets, screws and washers
before you operate sprayer.
CAUTION
• Do not run sprayer dry for more than 30 seconds.
Doing so could damage pump packings.
• Protect the internal drive parts of this sprayer from
water. Openings in the cover allow for air cooling of
the mechanical parts and electronics inside. If
water gets in these openings, the sprayer could
malfunction or be permanently damaged.
• Prevent pump corrosion and damage from freezing.
Never leave water or water-base paint in sprayer
when its not in use in cold weather. Freezing fluids
can seriously damage sprayer. Store sprayer with
Pump Armor to protect sprayer during storage.

Basic Troubleshooting
312004B 17
Basic Troubleshooting
Check everything in this Basic Troubleshooting Table before you bring the sprayer to a Graco/MAGNUM authorized
service center.
Problem Cause Solution
Project Painter 5 and Project Painter 7 -
AllControl is on and sprayer is plugged in,
but motor does not run, and pump does
not cycle, or motor continues to run in
OFF position.
or
SR7, ProX 7 and ProX9 - Power Switch is
on and sprayer is plugged in, but motor
does not run, and pump does not cycle.
Project Painter 5 and Project Painter 7 -
AllControl is set at zero pressure.
Turn AllControl clockwise to increase
pressure setting.
SR7, ProX7 and ProX9 - Pressure is set
at zero pressure.
Turn Pressure Control Knob clockwise to
increase pressure setting.
Motor or control is damaged. Take sprayer to Graco/MAGNUM
authorized service center.
Electric outlet is not providing power. • Try a different outlet or plug in a com-
patible working appliance to test out-
let.
• Reset building circuit breaker or
replace fuse.
Extension cord is damaged. Replace extension cord. Read
Grounding and Electric Requirements,
page 5.
Sprayer electric cord is damaged. Check for broken insulation or wires.
Replace electric cord if damaged.
Paint and/or water is frozen or hardened
in pump.
Unplug sprayer from outlet. If frozen do
NOT try to start sprayer until it is
completely thawed or you may damage
the motor, control board and/or drivetrain.
Make sure power switch is OFF. Place
sprayer in a warm area for several hours.
Then plug in power cord and turn sprayer
ON. Slowly increase pressure setting to
see if motor will start.
If paint is hardened in sprayer, pump
packings, valves, drivetrain or pressure
switch may need to be replaced. Take
sprayer to Graco/MAGNUM authorized
service center.
System is already pressurized. Turn AllControl to OFF, pause 2-3 sec-
onds and then turn AllControl to STOR-
AGE to relieve pressure.
Pump does not prime. Project Painter 5 and Project Painter 7 -
AllControl not set to correct function.
Turn AllControl to PRIME/CLEAN PUMP
position.
SR7, ProX7 and ProX9 - Prime/Spray
Valve is in SPRAY position.
Turn Prime/Spray Valve to PRIME
position (pointing down).
Inlet screen is clogged or suction tube is
not immersed.
Clean debris off inlet screen and make
sure suction tube is immersed in fluid.

Basic Troubleshooting
18 312004B
Pump does not prime. Inlet valve check ball is stuck. Remove suction tube and place a pencil
into the inlet section to dislodge the ball,
allowing pump to prime properly. OR
Power Flush sprayer (see Operation
manual).
AutoPrime may need replacement. For
Project Painter 7: plug in unit and listen
for “tap” in pump.
SR7 and ProX7 and 9: turn power switch
ON and listen for “tap” in pump.
If you do not hear “tap”, AutoPrime is
damaged. Take sprayer to
Graco/MAGNUM authorized service
center.
Inlet valve check ball or seat is dirty. Remove inlet housing. Clean or replace
ball and seat.
Outlet valve check ball is stuck. Insert screw driver in slot and remove
Easy-Access™door, page 10, SR7
models or page 12, ProX7 and ProX9
models. Unscrew outlet valve with a 3/4
in. socket. Remove and clean assembly.
Project Painter 5 and Project Painter 7 -
In immersion mode suction tube is not
immersed
Make sure suction tube is immersed in
paint.
Suction tube is leaking. Tighten suction tube connection. Inspect
for cracks or vacuum leaks.
Pump does not prime with fluid. Remove suction tube from paint. Prime
pump with water or solvent-based
flushing fluid.
AllControl is damaged. Take sprayer to Graco/MAGNUM
authorized service center.
Pump cycles but does not build up
pressure.
Pump is not primed. Prime pump (see Operation manual).
Inlet screen is clogged. Clean debris off inlet screen and make
sure suction tube is immersed in fluid.
All models in Immersion Mode, suction
tube is not immersed in paint.
Make sure suction tube is immersed in
paint.
Project Painter 5 - Hopper mode or all
models in immersion mode, paint pail is
empty.
Refill hopper or paint pail. Reprime
sprayer.
Suction tube is leaking. Project Painter 5 (hopper mode): Inlet
tube fitting improperly or not securely
attached to hopper elbow fitting.
Project Painter 7, SR7, ProX 7 and 9:
Tighten suction tube connection. Inspect
for cracks or vacuum leaks. If cracked or
damaged, replace suction tube.
Project Painter 5 and 7 - AllControl prime
valve is worn or obstructed with debris.
Take sprayer to Graco/MAGNUM
authorized service center.
SR7, ProX7 and ProX9 - Prime/Spray
Valve is worn or obstructed with debris.
Pump check ball is stuck. Read Pump does not prime section in
Troubleshooting, page 17
Problem Cause Solution

Basic Troubleshooting
312004B 19
Pump cycles, but paint only dribbles or
spurts when spray gun is triggered.
Pressure is set too low. Project Painter 5 and Project Painter 7
Sprayers -Slowly turn AllControl to HI
SPRAY to increase pressure setting
or
SR7, ProX 7 and ProX9 - Turn Pressure
Control Knob clockwise to increase
pressure setting which will turn on motor
to build pressure.
Spray tip is clogged. Unclog spray tip (see Operation manual).
SR7, ProX7 and ProX9 - InstaClean fluid
filter is clogged.
Clean or replace InstaClean fluid filter
(see Operation manual).
Spray gun fluid filter is clogged. Clean or replace gun fluid filter (see
Operation manual).
Spray tip is too large or worn. Replace spray tip.
Pressure is set at maximum but cannot
achieve a good spray pattern.
Reversible spray tip is in UNCLOG
position.
Rotate arrow-shaped handle on spray tip
so it points forward in SPRAY position
(see Operation manual).
Spray tip is too large for sprayer. Select smaller spray tip.
Spray tip is worn beyond capability of
sprayer.
Replace spray tip.
Extension cord is too long or not heavy
enough gauge.
Replace extension cord. Grounding and
Electrical Requirements, page 5.
Spray gun fluid filter is clogged. Clean or replace spray gun fluid filter (see
Operation manual).
SR7, ProX7 and ProX9 - InstaClean fluid
filter is clogged.
Clean or replace InstaClean fluid filter
(see Operation manual).
Inlet screen is clogged. Clean debris off inlet screen.
Pump valves are worn. Check for worn pump valves.
a. Prime sprayer with paint
b. Trigger gun momentarily. When
trigger is released, pump should
cycle momentarily and stop. If
pump continues to cycle, pump
valves may be worn. Take
sprayer to Graco/MAGNUM
authorized service center.
Material too thick. Thin material.
Hose too long (if extra section is added). Remove section of hose.
Spray gun stopped spraying. Pump was not primed with flushing fluid. Remove suction tube from paint. Prime
pump with water or flushing
solvent-based flushing fluid.
Suction tube is leaking. Tighten suction tube connection. Inspect
for cracks or vacuum leaks.
SR7, ProX7 and ProX9 - Prime/Spray
Valve is plugged.
Clean/replace prime tube as necessary.
Take sprayer to Graco/MAGNUM
authorized service center if valve is
plugged.
Spray tip is clogged. Unclog spray tip (see Operation manual).
Problem Cause Solution

Basic Troubleshooting
20 312004B
When paint is sprayed, it runs down the
wall or sags.
Coat is going on too thick. Move gun faster.
Choose a tip with smaller hole size.
Choose tip with wider fan.
Make sure gun is far enough from
surface.
When paint is sprayed, coverage is
inadequate.
Paint coating is going on too thin. Move gun slower.
Choose tip with larger hole size.
Choose tip with narrower fan.
Make sure gun is close enough to
surface.
Fan pattern varies dramatically while
spraying.
OR
Sprayer does not turn on promptly when
resuming spraying.
SR7, ProX7 and ProX9 - Pressure control
switch is worn and causing excessive
pressure variation.
Take sprayer to Graco/MAGNUM
authorized service center.
Cannot trigger spray gun. Spray gun trigger lock is locked. Rotate trigger safety lever to unlock
trigger lock, page 14.
Paint is coming out of pressure control
switch.
SR7, ProX7 and ProX9 - Pressure control
switch is worn.
Take sprayer to Graco/MAGNUM
authorized service center.
Prime/Spray valve actuates automatically
relieving pressure through prime tube.
System is over pressurizing. Take sprayer to Graco/MAGNUM
authorized service center.
Paint leaks down outside of pump. Pump packings are worn. Replace pump packings.
Motor is hot and runs intermittently.
Motor automatically shuts off due to
excessive heat. Damage can occur if
cause is not corrected.
Thermal Overload, page 5.
Vent holes in enclosure are plugged or
sprayer is covered.
Keep vent holes clear of obstructions and
overspray and keep sprayer open to air.
Extension cord is too long or not a heavy
enough gauge.
Replace extension cord. Read
Grounding and Electrical
Requirements, page 5.
Unregulated electrical generator being
used has excessive voltage.
Use electrical generator with a proper
voltage regulator. Sprayer requires
120VAC, 60 Hz, 1500-Watt generator.
Sprayer was operated at high pressure
with very small tip which causes frequent
motor starts and excessive heat build up.
Decrease pressure setting or increase tip
size.
Building circuit breaker opens after
sprayer operates for 5 to 10 minutes.
Too many appliances are plugged in on
same circuit.
Free up circuit (unplug things), or use a
less busy circuit.
Sprayer electrical cord is damaged. Check broken insulation or wires.
Replace electrical cord if damaged.
Extension cord is damaged or too long or
not a heavy enough gauge.
• Plug in something that you know is
working to test extension cord.
• Replace extension cord.
Prox7 and ProX9 - Fold ‘n Store handle
does not actuate
Dirty or dried paint Clean handle parts.
Problem Cause Solution