Graco ProX7, X7, ProX9, X5 User Manual

Repair and Parts

Visit our website;

http://MAGNUM.Graco.com

	X5	™	™	ProX7	™	™	312667K
							EN
		,	X7,			& ProX9 Airless Sprayers

- For portable spray applications of architectural paints and coatings. For professional use only-

Models 262800, 262805, 261815, 261820

See page 3 for model and series information including dispense rate, recommended hose length, guns, and maximum working pressure.

IMPORTANT SAFETY INSTRUCTIONS.

Read all warnings and instructions in this manual. Save these instructions.

Related Manual

312001

X5 and X7 Models ONLY: Use water based or mineral-spirit type material only. Do not use materials having flash points lower than 70°F (21°C). This includes, but is not limited to, acetone, xylene, toluene, or naptha. For more information about your material request MSDS from distributor or retailer.

MAGNUM X5	MAGNUM ProX7	MAGNUM ProX9
Model: 262800	Model: 261815	Model: 261820
Series A, B, C, D	Series A	Series A

	ti11304a
		ti9369a	ti9368a
	MAGNUM X7	MAGNUM ProX7	MAGNUM ProX9
	Model: 262805
		Model: 261815	Model: 261820
	Series A, B, C
		Series B
			Series B

ti11305a	ti9369b
	ti16976a

Table of Contents

Table of Contents

Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Getting Started

Fold-n-Store™ Cart (ProX, Series A Sprayers Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Component Identification . . . . . . . . . . . . . . . . . . . . 8 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Grounding and Electric Requirements . . . . . . . 10 Thermal Overload . . . . . . . . . . . . . . . . . . . . . . . 10

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Trigger Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Pressure Relief Procedure . . . . . . . . . . . . . . . . 11 Pressure Control Knob Settings . . . . . . . . . . . . 11

General Repair Information . . . . . . . . . . . . . . . . . 12 Basic Troubleshooting . . . . . . . . . . . . . . . . . . . . . 13 Advanced Troubleshooting . . . . . . . . . . . . . . . . . 18

General Problem: Motor Does Not Operate . . . 18 General Problem: Circuit Breaker is Tripping . . 21 General Problem: Erratic Motor Operation . . . . 22 General Problem: Low or Fluctuating Output . . 23 General Problem: Excessive Pressure Build Up 24

Motor Diagnostics (X5 and X7) . . . . . . . . . . . . . . . 25 Motor Diagnostics (ProX7 and ProX9) . . . . . . . . . 25 Pressure Control Switch Diagnostics . . . . . . . . . 26

Control Board Diagnostics (ProX7 and ProX9) . . 27 Control Board Diagnostics (X5 and X7) . . . . . . . . 27 Pump Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . 27 List of Kits (Series A) . . . . . . . . . . . . . . . . . . . . . . . 28 List of Kits (Series B, C, D) . . . . . . . . . . . . . . . . . . 29 Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

X5 Model 262800 (Series A) . . . . . . . . . . . . . . . 30 X5 Model 262800 (Series B, C, D) . . . . . . . . . . 33 X7 Model 262805 (Series A) . . . . . . . . . . . . . . . 36 X7 Model 262805 (Series A) . . . . . . . . . . . . . . . 38 X7 Model 262805 (Series B, C) . . . . . . . . . . . . . 39 X7 Model 262805 (Series B, C) . . . . . . . . . . . . . 40 X7 Model 262805 (Series B, C) . . . . . . . . . . . . . 41

ProX7 and ProX9 Models 261815 and 261820 (Series A, B) . . . . . . . . . . . . . . . . . . . . . . . . 42

ProX7 and ProX9 Models 261815 and 261820 (Series A) . . . . . . . . . . . . . . . . . . . . . . . . . . 44

ProX7 and ProX9 Models 261815 and 261820 (Series B) . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . 46

X5 and X7 Models 262800 and 262805 (Series A)

46

ProX7 and ProX9 Models 261815 and 261820 . 48

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 50

2

312667K

Specifications

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.

						Maximum Working
			Dispense Rate	Hose Length and	Gun		Pressure
	Model Name	Series	gpm (lpm)	Diameter	Model	PSI	MPa	bar
	MAGNUM X5	A, B, C	0.24 gpm	1/4 in. x 25 ft	SG2	2800	19	193
			(0.91 lpm)	(6.4 mm x 7.5 m)
	MAGNUM X5	D	0.27 gpm	1/4 in. x 25 ft	SG2	3000	21	207
			(1.02 lpm)	(6.4 mm x 7.5 m)
	MAGNUM X7	A, B, C	0.31 gpm	1/4 in. x 25 ft	SG2	3000	21	207
			(1.17 lpm)	(6.4 mm x 7.5 m)
	MAGNUM	A, B	0.34 gpm	1/4 in. X 50 ft	SG3	3000	21	207
	ProX7		(1.29 lpm)	(6.4 mm x 15 m)
	MAGNUM	A, B	0.38 gpm	1/4 in. X 50 ft	SG3	3000	21	207
	ProX9		(1.44 lpm)	(6.4 mm x 15 m)

Getting Started

Fold-n-Store™ Cart (ProX, Series A Sprayers Only)

	1. Unfold Fold-n-Store	a	d
	handle (a) and align		4. Install hose rack (d) to frame
	as shown.		handle. Install lock nuts.
			Tighten securely.

2. Tighten wingnuts (b).

b ti9675a

3.Grasp cart handle securely with one hand. With the other hand, lift and pull handle (a) located in front of sprayer frame, toward you. Lift up front of sprayer until you hear a

click and the cart is	c
locked in place.		ti9679a

5.Secure power cord in clip

(e) located underneath storage compartment.

e

ti9369a

ti9719a

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3

Warnings

Warnings

The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclamation 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

GROUNDING

This product must be grounded. In the event of an electrical short circuit, grounding reduces the risk of electric shock by providing an escape wire for the electric current. This product is equipped with a cord having 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.

•Improper installation of the grounding plug is able to result in a risk of electric shock.

•When repair or replacement of the cord or plug is required, do not connect the grounding wire to either flat blade terminal.

•The wire with insulation having an outer surface that is green with or without yellow stripes is the grounding wire.

•Check with a qualified electrician or serviceman when the grounding instructions are not completely understood, or when in doubt as to whether the product is properly grounded.

•Do not modify the plug provided; if it does not fit the outlet, have the proper outlet installed by a qualified electrician.

•This product is for use on a nominal 120V circuit and has a grounding plug similar to the plug illustrated in the figure below.

ti9164a

•Only connect the product to an outlet having the same configuration as the plug.

•Do not use an adapter with this product.

Extension Cords:

•Use only a 3-wire extension cord that has a 3-blade grounding plug and a 3-slot receptacle that accepts the plug on the product.

•Make sure your extension cord is not damaged. If an extension cord is necessary, use 12 AWG

(2.5 mm2) minimum to carry the current that the product draws.

An undersized cord results in a drop in line voltage and loss of power and overheating.

4

312667K

Warnings

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:

•Do not spray flammable or combustible materials near an open flame or sources of ignition such as cigarettes, motors, and electrical equipment. For X5 and X7 models: only use water-based or mineral spirit-type materials with a flash point greater than 70° F (21° C).

•Paint or solvent flowing through the equipment is able to result in static electricity. Static electricity creates a risk of fire or explosion in the presence of paint or solvent fumes. All parts of the spray system, including the pump, hose assembly, spray gun, and objects in and around the spray area shall be properly grounded to protect against static discharge and sparks. Use Graco conductive or grounded high-pressure airless paint sprayer hoses.

•Verify that all containers and collection systems are grounded to prevent static discharge.

•Connect to a grounded outlet and use grounded extensions cords. Do not use a 3-to-2 adapter.

•Do not use a paint or a solvent containing halogenated hydrocarbons.

•Keep spray area well-ventilated. Keep a good supply of fresh air moving through the area. Keep pump assembly in a well ventilated area. Do not spray pump assembly.

•Do not smoke in the spray area.

•Do not operate light switches, engines, or similar spark producing products in the spray area.

•Keep area clean and free of paint or solvent containers, rags, and other flammable materials.

•Know the contents of the paints and solvents being sprayed. Read all Material Safety Data Sheets (MSDS) and container labels provided with the paints and solvents. Follow the paint and solvents manufacturer’s safety instructions.

•Fire extinguisher equipment shall be present and working.

•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.

SKIN INJECTION HAZARD

•Do not aim the gun at, or spray any person or animal.

•Keep hands and other body parts away from the discharge. For example, do not try to stop leaks with any part of the body.

•Always use the nozzle tip guard. Do not spray without nozzle tip guard in place.

•Use Graco nozzle tips.

•Use caution when cleaning and changing nozzle tips. In the case where the nozzle tip clogs while spraying, follow the Pressure Relief Procedure for turning off the unit and relieving the pressure before removing the nozzle tip to clean.

•Do not leave the unit energized or under pressure while unattended. When the unit is not in use, turn off the unit and follow the Pressure Relief Procedure for turning off the unit.

•High-pressure spray is able to inject toxins into the body and cause serious bodily injury. In the event that injection occurs, get immediate surgical treatment.

•Check hoses and parts for signs of damage. Replace any damaged hoses or parts.

•This system is capable of producing 3000 psi. Use Graco replacement parts or accessories that are rated a minimum of 3000 psi.

•Always engage the trigger lock when not spraying. Verify the trigger lock is functioning properly.

•Verify that all connections are secure before operating the unit.

•Know how to stop the unit and bleed pressure quickly. Be thoroughly familiar with the controls.

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5

Warnings

WARNING

EQUIPMENT MISUSE HAZARD

Misuse can cause death or serious injury.

•Do not operate the unit when fatigued or under the influence of drugs or alcohol.

•Do not exceed the maximum working pressure or temperature rating of the lowest rated system component. See Technical Data in all equipment manuals.

•Use fluids and solvents that are compatible with equipment wetted parts. See 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.

•Do not leave the work area while equipment is energized or under pressure.

•Turn off all equipment and follow the Pressure Relief Procedure when equipment is not in use.

•Check equipment daily. Repair or replace worn or damaged parts immediately with genuine manufacturer’s replacement parts only.

•Do not alter or modify equipment. Alterations or modifications may void agency approvals and create safety hazards.

•Make sure all equipment is rated and approved for the environment in which you are using it.

•Use equipment only for its intended purpose. Call your distributor for information.

•Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.

•Do not kink or over bend hoses or use hoses to pull equipment.

•Keep children and animals away from work area.

•Comply with all applicable safety regulations.

ELECTRIC SHOCK HAZARD

This equipment must be grounded. Improper grounding, setup, or usage of the system can cause electric shock.

•Turn off and disconnect power cord before servicing equipment.

•Connect only to grounded electrical outlets.

•Use only 3-wire extension cords.

•Ensure ground prongs are intact on power and extension cords.

•Do not expose to rain. Store indoors

PRESSURIZED ALUMINUM PARTS HAZARD

Use of fluids that are incompatible with aluminum in pressurized equipment can cause serious chemical reaction and equipment rupture. Failure to follow this warning can result in death, serious injury, or property damage.

•Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or fluids containing such solvents.

•Many other fluids may contain chemicals that can react with aluminum. Contact your material supplier for compatibility.

BURN HAZARD

Equipment surfaces and fluid that’s heated can become very hot during operation. To avoid severe burns:

•Do not touch hot fluid or equipment.

MOVING PARTS HAZARD

Moving parts can pinch or amputate fingers and other body parts.

•Keep clear of moving parts.

•Do not operate equipment with protective guards or covers removed.

•Pressurized equipment can start without warning. Before checking, moving, or servicing equipment, follow the Pressure Relief Procedure in this manual. Disconnect power or air supply.

6

312667K

Warnings

WARNING

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

Wear appropriate protective equipment when in the work area to help prevent serious injury, including eye injury, hearing loss, inhalation of toxic fumes, and burns. This protective equipment includes but is not limited to:

•Protective eyewear, and hearing protection.

•Respirators, protective clothing, and gloves as recommended by the fluid and solvent manufacturer.

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7

Component Identification

Component Identification

	A	Airless spray gun	Sprays fluid.
	B	Power switch	Turns sprayer ON and OFF.
	C	Pressure control knob	Increases (clockwise) and decreases (counter-clockwise) fluid pres-
			sure in pump, hose, and spray gun.
	C1	Setting Indicator	To select function, align symbol on pressure control knob with setting
			indicator, page 11.
	D	Pump fluid outlet fitting	Threaded connection for paint hose.
		InstaClean™ fluid filter	• Filters fluid coming out of pump to reduce tip plugging and
	E		improve finish.
		(ProX Sprayers Only)	• Self cleans only during pressure relief.
	F	ProX Power-Piston™ Pump (behind	Pumps and pressurizes fluid and delivers it to paint hose.
		Easy Access door, not shown)
		(ProX Sprayers Only)
		Easy Access™ door	Easy Access door permits quick access to outlet valve. To remove
	F1		door, insert flat blade of screwdriver into slot on the bottom of the
		(ProX Sprayers Only)
			door (as shown on page 8).
	G	Suction tube	Draws fluid from paint pail into pump.
	H	Prime tube (with diffuser)	Drains fluid in system during priming and pressure relief.
			• In PRIME position (pointing down) directs fluid to prime tube.
			• In SPRAY position (pointing forward) directs pressurized fluid to
	J	Prime/Spray valve	paint hose.
			• Automatically relieves system pressure in overpressure situa-
			tions.
	K	Storage compartment	Provides onboard storage for spray tips and/or tools.
		(ProX Series A Sprayers Only)
	L	Inlet screen	Prevents debris from entering pump.
	M	Paint hose	Transports high-pressure fluid from pump to spray gun.
	N	Fold-n-Store™ Cart	Folding cart frame for hanging on wall.
		(ProX Series A Sprayers Only)
	Q	Tip guard	Reduces risk of fluid injection injury.
			• Atomizes fluid being sprayed, forms spray pattern and controls
	R	Reversible spray tip	fluid flow according to hole size.
			• Reverse unclogs plugged tips without disassembly.
	S	Gun trigger safety lever (page 11)	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 Rack	Stows paint hose.
		(X7, ProX7, and ProX9 Only)
	X	Pail hanger	For transporting pail by its handle.
		(X7, Prox7, and ProX9 Only)
	AA	QuickAccess™ Inlet	Permits quick access to inlet valve to clear debris.
		(ProX9 Series A Only)

8

312667K

Component Identification

ti9724a

ti9346a U

	B
W
	K
	J
			F1
	F
	N		ti9670a
	H		X
	C
	C1
	G
ti9368a	AA
	ti9669a	E	D
	L

ProX Series A shown

R S

Q A

	ti16978a	ti16977a
	T
ti9667a	V (SG3)	V (SG2)

M

312667K

9

Installation

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	ti5573a
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.

ti5572a

Recommended extension cords for use with this sprayer:

•50 ft (15.0 m) 14 AWG (2.1 mm2)

•100 ft (30.0 m) 12 AWG (3.3 mm2)

Spray gun: ground through connection to a properly grounded fluid hose and pump.

NOTE: Smaller gauge or longer extension cords may reduce sprayer performance.

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.

ti9207a

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.

To reduce risk of injury from motor starting unexpectedly when it cools, always turn power switch OFF if motor shuts down.

10

312667K

Operation

See Operation manual 312001 for basic information on sprayer set-up, flushing, and storage.

Operation

Pressure Relief Procedure

Follow this Pressure Relief Procedure whenever you stop spraying and before cleaning, checking, servicing, or transporting equipment.

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.

ti8923a ti8922a

Trigger Locked SG10 Trigger Unlocked SG10

ti8908a	ti8909a
Trigger Locked SG20,	Trigger Unlocked SG20,
SG2, SG3, SGPro	SG2, SG3, SGPro

1. Turn power switch OFF and unplug power cord.

ti2018a

2.Turn Prime/Spray valve to PRIME to relieve pressure.

ti9346a

3.Hold gun firmly to side of pail. Trigger the gun to relieve pressure.

ti9207a

4. Engage trigger lock.

ti8923a ti8908a

SG10	SG2, SG3
	SG20, SGPro

NOTE: Leave Prime/Spray valve in the PRIME position until you are ready to spray again.

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.

Pressure Control Knob Settings

ti5597a

High Pressure	Low Pressure	Prime/ Rolling
Spray	Spray	Clean

NOTE: To select function, align symbol on pressure control knob with setting indicator on sprayer.

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11

General Repair Information

General Repair Information

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.

•Keep all screws, nuts, washers, gaskets, and electrical 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 13 and Advanced Troubleshooting, page 18.

•Overspray may build up in the air passages. Remove any overspray and residue from air passages 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.

To reduce risk of serious injury, including electric shock:

•Do not touch moving or electric parts with fingers or tools while testing repair.

•Unplug sprayer when power is not required for testing.

•Install all covers, gaskets, screws and washers before you operate sprayer.

NOTICE

•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.

12

312667K

Basic Troubleshooting

Basic Troubleshooting

Check everything in this Basic Troubleshooting table before you bring the sprayer to a Graco/MAGNUM authorized service center.

	Problem	Cause	Solution
	Power switch is on and sprayer is	Pressure is set at zero pressure.	Turn pressure control knob clockwise
	plugged in, but motor does not run,		to increase pressure setting.
	and pump does not cycle.
		Electric outlet is not providing power.	• Check that lighted plug on
			sprayer is lit (this indicates
			electric power at outlet).
			• Reset building circuit breaker or
			replace fuse.
		Extension cord is damaged.	Replace extension cord. Read
			Grounding and Electric Require-
			ments, page 10.
		Sprayer electric cord is damaged.	Check for broken insulation or wires.
			Replace electric cord if damaged.
		Motor or control is damaged.	Take sprayer to Graco/MAGNUM
			authorized service center.

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13

Basic Troubleshooting

Problem	Cause	Solution
Pump does not prime.	Prime/Spray Valve is in SPRAY posi-	Turn Prime/Spray Valve to PRIME
	tion.	position (pointing down).
	Inlet screen is clogged or suction	Clean debris off inlet screen and
	tube is not immersed.	make sure suction tube is immersed
		in fluid.
	Pump was not primed with flushing	Remove suction tube from paint.
	fluid.	Prime pump with water or
		solvent-based flushing fluid, see
		Operation manual 312001.
	Inlet valve check ball is stuck.	Remove suction tube and place a
		pencil into the inlet section to dis-
		lodge the ball, allowing pump to
		prime properly. Or, Power Flush
		sprayer, see Operation manual
		312001.
		AutoPrime may need replacement.
		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 fitting. Clean or replace
		ball and seat.
	Outlet valve check ball is stuck.	ProX7 and ProX9: Insert screw
		driver in slot and remove
		Easy-Access door, page 8. Unscrew
		outlet valve with a 3/4 in. socket.
		Remove and clean assembly.
		X5 and X7: Remove outlet fitting and
		clean outlet check ball.
	Suction tube is leaking allowing air to	Check suction tube for cracks and
	enter.	cuts. Make sure suction tube clamp is
		on hose. Replace suction tube if
		cracked or damaged.
	Pump valves are worn.	Check for worn valves, see page 14.
	Paint is very thick or sticky.	Thin material per manufacturer’s
		instructions.
		Momentarily turn power switch OFF
		to allow pump to slow and stop.
		Repeat as necessary.

14

312667K

		Basic Troubleshooting
Problem	Cause	Solution
Pump cycles but does not build up	Prime/Spray valve in PRIME position	Turn Prime/Spray valve to SPRAY
pressure.	(pointing down).	position (pointing forward).
	Pump is not primed.	Prime pump, see Operation manual
		312001.
	Inlet screen is clogged or suction	Clean debris off inlet screen and
	tube is not immersed.	make sure suction tube is immersed
		in fluid.
	Suction tube is leaking, allowing air to	Check suction tube for cracks and
	enter.	cuts. Make sure suction tube clamp is
		on hose. Replace suction tube if
		cracked or damaged.
	Prime/Spray Valve is worn or	Take sprayer to Graco/MAGNUM
	obstructed with debris.	authorized service center.
	Pump check ball is stuck.	Read Pump does not prime section
		in Troubleshooting, page 14.
Pump cycles, but paint only dribbles	Pressure is set too low.	Slowly turn pressure control knob
or spurts when spray gun is trig-		clockwise to increase pressure set-
gered.		ting which will turn motor on to build
		pressure.
	Spray tip is clogged.	Unclog spray tip, see Operation man-
		ual 312001.
	InstaClean fluid filter is clogged.	Clean or replace InstaClean fluid fil-
	(ProX7 and ProX9 Only)	ter, see Operation manual 312001.
	Spray gun fluid filter is clogged.	Clean or replace gun fluid filter, see
		Operation manual 312001.
	Spray tip is too large or worn.	Replace tip.

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15

Basic Troubleshooting

Problem	Cause	Solution
Pressure is set at maximum but	Spray tip is clogged.	Unclog spray tip, see Operation
cannot achieve a good spray pattern.		manual 312001.
	Reversible spray tip is in UNCLOG	Rotate arrow-shaped handle on
	position.	spray tip so it points forward on gun.
	Spray tip is too large for sprayer.	Select smaller spray tip.
	Spray tip is worn beyond capability of	Replace spray tip.
	sprayer.
	Extension cord is too long or not	Replace extension cord. See
	heavy enough gauge.	Grounding and Electrical
		Requirements, page 10.
	Spray gun fluid filter is clogged.	Clean or replace spray gun fluid filter,
		see Operation manual 312001.
	InstaClean fluid filter is clogged.	Clean or replace InstaClean fluid
	(ProX7 and ProX9 Only)	filter, see Operation manual 312001.
	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 momen-
		tarily and stop. If pump con-
		tinues to cycle, pump valves
		may be worn.
	Material is too thick.	Thin material.
	Hose is too long (if extra section is	Remove extra section of hose.
	added).
Spray gun stopped spraying. Pump is	Spray tip is clogged.	Unclog spray tip, see Operation man-
not cycling.		ual 312001.
When paint is sprayed, it runs down	Coat is going on too thick.	Move gun faster.
the wall or sags.
		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	Coat is going on too thin.	Move gun slower.
inadequate.
		Choose tip with larger hole size.
		Choose tip with narrower fan.
		Make sure gun is close enough to
		surface.

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