Graco 3A6419B, ProX17, ProX19, ProX21, ProLTS170, ProLTS190 Electric Airless Sprayers Owner's Manual

3A6419B EN

Important Safety Instructions

Read all warnings and instructions in this manual, related manuals, and on the unit. Be familiar with the controls and the proper usage of the equipment. Save these instructions.

888-541-9788 http://magnum.graco.com/magop/

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For portable spray applications of architectural paints and coatings only.

Not approved for use in explosive atmospheres or hazardous locations.

2

Before You Spray

Before You Spray

Review Warnings for Important Safety Information

Important! Read carefully and practice good safety habits.

Related Manuals

312830

3A3172

SG Spray Guns

ProXChange™ Pump

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Models

3000 psi (207 bar, 20.7 MPa) Maximum Working Pressure

VAC Model Stand (Series)

ProX17

17G177 (A)

17K438 (A)

CAN177 (A)

ProLTS170 17H198 (A)

110474

Certified to

CAN/CSA

C22.2 No. 68

Conforms to

UL 1450

120

USA ProX19

ProLTS190

ProX21

17G179 (A)

CAN179 (A)

17G181 (A)

CAN181 (A)

Cart (Series)

17G178 (A)

CAN178 (A)

17G180 (A)

17K439 (A)

CAN180 (A)

17H206 (A)

17G182 (A)

CAN182 (A)

Online Resources

Visit Our Website:

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Material Compatibility:

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3A6419B EN

Contents

Contents

Before You Spray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Know Your Sprayer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

ProX and ProLTS Stand Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Know Your Sprayer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

ProX and ProLTS Cart Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Know Your Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Set Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Pressure Relief Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Flush Storage Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Strain the Paint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Fill Pump (Prime Pump) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Fill Gun and Hose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Refilling Paint Pail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Blockages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Spraying . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Adjust Pressure Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Spray Pattern Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Spray Techniques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Triggering Gun . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Aiming Gun . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Aligning Spray Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Spray Tip and Pressure Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Clear Spray Tip Clog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Spray Tip Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Cleanup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Cleaning from a Pail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Cleanup with Power Flush Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Cleaning InstaClean Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Clean the Gun and Gun Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Short Term Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Long Term Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Lacquer Conversion Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Cleaning Fluid Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Static Grounding Instructions (Oil-Based materials) . . . . . . . . . . . . . . . . . . . . . . . . 30

Quick Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

3A6419B EN 3

4

Contents

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Airless Hoses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Spray Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Storage/Priming Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Inlet Valve Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Pump Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

ProX17, ProX19, ProLTS170 Stand Sprayer Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

ProX17, ProX19, ProLTS170 Stand Sprayer Parts List . . . . . . . . . . . . . . . . . . . . . . 41

ProX21 Stand Sprayer Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

ProX21 Stand Sprayer Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

ProX17, ProX19, ProLTS190 Cart Sprayer Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

ProX17, ProX19, ProLTS190 Cart Sprayer Parts List . . . . . . . . . . . . . . . . . . . . . . . 45

ProX21 Cart Sprayer Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

ProX21 Cart Sprayer Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

ProXChange Pump Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

ProXChange Pump Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Wiring Diagram - 110/120V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Graco Standard Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

3A6419B EN

Notes

Notes

3A6419B EN 5

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. When these symbols appear in the body of this manual or on warning labels, refer back to these Warnings. Product-specific hazard symbols and warnings not covered in this section may appear throughout the body of this manual where applicable.

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 plugs illustrated below.

6 ti3509b

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

• Do not use a 3-to-2 adapter with this product.

Extension Cords:

• Use only a 3-wire extension cord that has a grounding plug and a grounding 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 (2.5mm

2 ) 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.

Conductor Size

AWG (American Wire Gauge) Metric

16

1.5 mm

2

12

2.5 mm

2

Length

Maximum

25 ft. (8 m)

50 ft. (15 m)

3A6419B EN

Warnings

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.

• 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.

Do not use pail liners unless they are anti-static or conductive.

• 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.

• Do not spray flammable or combustible liquids in a confined area.

• Keep spray area well-ventilated. Keep a good supply of fresh air moving through the area.

• Sprayer generates sparks. Keep pump assembly in a well ventilated area a least 20 feet

(6.1 m) from the spray area when spraying, flushing, cleaning, or servicing. Do not spray pump assembly.

• Do not smoke in the spray area or spray where sparks or flame is present.

• 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 Safety Data Sheets

(SDSs) and container labels provided with the paints and solvents. Follow the paint and solvents manufacturer’s safety instructions.

• Keep a working fire extinguisher in the work area.

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.

3A6419B EN 7

8

Warnings

SKIN INJECTION HAZARD

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.

• 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.

• Equipment maintains pressure after power is shut off. Do not leave the equipment energized or under pressure while unattended. Follow the Pressure Relief Procedure when the equipment is unattended or not in use, and before servicing, cleaning, or removing parts.

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

• This system is capable of producing 3000 psi (207 bar, 20.7 MPa). Use Graco replacement parts or accessories that are rated a minimum of 3000 psi (207 bar, 20.7

MPa).

• 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.

EQUIPMENT MISUSE HAZARD

Misuse can cause death or serious injury.

• Always wear appropriate gloves, eye protection, and a respirator or mask when painting.

• Do not operate or spray near children. Keep children away from equipment at all times.

• Do not overreach or stand on an unstable support. Keep effective footing and balance at all times.

• Stay alert and watch what you are doing.

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

• Do not kink or over-bend the hose.

• Do not expose the hose to temperatures or to pressures in excess of those specified by

Graco.

• Do not use the hose as a strength member to pull or lift the equipment.

• Do not spray with a hose shorter than 25 feet.

• 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.

3A6419B EN

Warnings

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.

• Do not use chlorine bleach.

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

MOVING PARTS HAZARD

Moving parts can pinch, cut, 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 and disconnect all power sources.

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 Safety Data Sheets (SDSs) 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.

CALIFORNIA PROPOSITION 65

This product contains a chemical known to the State of California to cause cancer, birth defects or other reproductive harm. Wash hands after handling.

3A6419B EN 9

Know Your Sprayer

Know Your Sprayer

ProX and ProLTS Stand Models

A Power - ON/OFF Switch

B Pressure Control Knob

C Prime/Spray Valve

D Spray Tip

E PushPrime™ Button

F Suction Tube

G Drain Tube (with diffuser)

H Airless Spray Gun

J Spray Tip Guard

K Gun Trigger Lock

L Gun Fitting

M Gun Filter (inside handle)

N ProXChange™ Pump (behind Easy

Access Door)

O Inlet Valve

10

P Airless Hose Connection

Q Airless Hose

R InstaClean™ Filter (inside fluid outlet)

T Inlet Screen

U Power Cord

V Easy Access Door

W Suction Tube Drip Cup

X Pump Removal Tool

Y Outlet Valve

Z Inlet Valve Removal Tool

Model/Serial Tag (Not shown, located on bottom of unit.)

See Quick Reference , page 31 for more

information.

3A6419B EN

Know Your Sprayer

ProX and ProLTS Cart Models

Know Your Sprayer

A Power - ON/OFF Switch

B Pressure Control Knob

C Prime/Spray Valve

D Spray Tip

E PushPrime Button

F Suction Tube

G Drain Tube (with diffuser)

H Airless Spray Gun

J Spray Tip Guard

K Gun Trigger Lock

L Gun Fitting

M Gun Filter (inside handle)

N ProXChange™ Pump (behind Easy

Access Door)

O Inlet Valve

3A6419B EN

P Airless Hose Connection

Q Airless Hose

R InstaClean Filter (inside fluid outlet)

S Pail Hanger

T Inlet Screen

U Power Cord

V Easy Access Door

X Pump Removal Tool

Y Outlet Valve

Z Inlet Valve Removal Tool

Model/Serial Tag (Not shown, located on bottom of unit.)

See

Quick Reference , page 31 for more

information.

11

Know Your Controls

Know Your Controls

The ON/OFF power switch controls the main power to your sprayer.

The Pressure Control knob increases or decreases the pressure and flow of the paint.

The Prime/Spray Valve directs the fluid to either the Drain Tube or the hose and gun. It is used to prime the sprayer, which means to evacuate the air out of the pump, hose, and gun.

Your gun will not spray if there is air in the system. It is necessary to prime the pump, hose, and gun any time air enters the Suction

Tube.

The Spray Tip is the key to airless spray technology. High pressure paint pumped through the very small hole in the Spray Tip comes out as a spray.

The Spray Tip has the ability to be reversed and quickly clear clogs.

12 3A6419B EN

Set Up

Set Up

Assemble Your Sprayer

1.

Connect airless hose to airless hose connection (P) on sprayer. Use wrench to tighten securely.

2.

Connect the other end of the hose to the gun. Use two wrenches to tighten securely to gun (see image below).

If hose is already connected, make sure connections are tight.

3.

Assure Spray Tip is properly inserted into the Spray Tip Guard, and the Spray

Tip Guard assembly is tightened securely to gun. See

Spray Tip

Installation , page 21.

4.

Perform the Pressure Relief

Procedure , page 14.

3A6419B EN 13

Start Up

Start Up

Pressure Relief Procedure

Follow the Pressure Relief

Procedure whenever you see this symbol.

3.

Turn pressure control knob to lowest setting.

This equipment stays pressurized until pressure is manually relieved. To help prevent serious injury from pressurized fluid, such as skin injection or splashed fluid, follow the Pressure Relief

Procedure whenever sprayer is stopped and before sprayer is cleaned or checked, and before equipment is serviced.

1.

Turn ON/OFF switch to the OFF position.

4.

Put Drain Tube into a waste pail and turn Prime/Spray Valve down to PRIME position to relieve pressure.

5.

Hold the gun firmly to a pail. Point gun into pail. Disengage the trigger lock and trigger the gun to relieve pressure.

2.

Engage the trigger lock. Always engage the trigger lock when sprayer is stopped to prevent the gun from being triggered accidentally.

6.

Engage the trigger lock.

14

7.

If you suspect that pressure has not

been fully relieved, see Blockages , page 17.

NOTE: Leave Prime/Spray Valve in the

PRIME position until you are ready to spray.

3A6419B EN

Flush Storage Fluid

It is important that you flush storage fluid from the sprayer before using it.

1.

Make certain ON/OFF switch is OFF .

2.

Separate Drain Tube (smaller) from

Suction Tube (larger). Place Drain

Tube in a waste pail.

3.

Submerge Suction Tube into pail filled with water if spraying water-based material, or mineral spirits if spraying oil-based material.

Start Up

7.

Align setting indicator with the START setting on the pressure control knob.

8.

Turn ON/OFF switch to ON position.

4.

Turn Prime/Spray Valve down to

PRIME position.

9.

When sprayer starts pumping, flushing fluid will flow up the Suction Tube and out the Drain Tube. Allow fluid to flow out of Drain Tube, into waste pail, for 30 to 60 seconds.

5.

Plug power supply cord into a properly grounded electrical outlet.

6.

Press the PushPrime button twice to loosen Inlet Valve ball.

10. Turn the ON/OFF switch to OFF position.

3A6419B EN

NOTE: If flushing fluid fails to come out of the

Drain Tube, see

Storage/Priming Tool , page 32.

15

Start Up

Strain the Paint

Disposable paint strainer bags are used to remove coarse particles and debris from new or previously opened paint or stain, and are available where paint is sold. To avoid priming problems and Spray Tip clogs it is recommended to strain all paints and stains before spraying. Stretch a disposable paint strainer bag over a clean pail and pour the paint through the strainer.

2.


3.

Wait to see paint coming out of Drain

Tube.

4.

Turn ON/OFF switch to OFF position.

NOTE: If paint does NOT flow up the Suction

Tube and out the Drain Tube, see Flush

Storage Fluid , page 15.

Fill Gun and Hose

1.

Rotate Spray Tip to UNCLOG position and ensure the Spray Tip Guard is tight. ti26894a

High-pressure spray is able to inject toxins into the body and cause serious bodily injury. Do not stop leaks with hand or rag.

Fill Pump (Prime Pump)

The Prime/Spray Valve directs the fluid to either the Drain Tube or the hose and gun. It is used to prime the sprayer, which means to evacuate the air out of the pump, hose, and gun.

Your gun will not spray if there is air in the system. It is necessary to prime the pump, hose, and gun any time air enters the suction tube.

1.

Move Suction Tube to paint pail and submerge Suction Tube in paint.

2.

Hold gun against waste pail. Point gun into waste pail. a.

Disengage trigger lock (A).

b.

Pull and hold gun trigger (B).

c.

Turn Prime/Spray Valve horizontal to SPRAY position (C).

d.

Turn ON/OFF switch to ON position

(D).

16

3.

Trigger gun into waste pail until only paint comes out of the gun.

3A6419B EN

4.

Release trigger. Engage trigger lock.


NOTE: Inspect for leaks. If leaking occurs,

perform Pressure Relief Procedure , page

14, then tighten all fittings and repeat

Fill

Pump (Prime Pump) , page 16.

5.

Transfer Drain Tube to paint pail and clip to Suction Tube.

6.

Rotate Spray Tip back to SPRAY position and ensure the Spray Tip Guard is tight.

Start Up

Refilling Paint Pail

When the paint pail runs low and the gun stops spraying, refill the paint pail and repeat the

Fill Pump (Prime Pump)

procedure, then the

Fill Gun and Hose

procedure.

You are now ready to spray!

NOTE: It is normal for the motor to stop once the sprayer is primed and under pressure. If the motor continues to run, the sprayer is not primed. Repeat the Fill Pump (Prime Pump) and Fill Gun and Hose processes.

Blockages

If paint does not come out of the gun, or if performing pressure relief procedure and you suspect pressure has not been fully relieved:

1.

VERY SLOWLY loosen the hose connection to the gun and disconnect the airless spray hose from the gun.

2.

Turn Prime/Spray Valve horizontal to

SPRAY position.

3.

While holding hose firmly, point end of hose into paint pail and turn ON/OFF switch to ON position. a.

If fluid does not flow out of hose, replace the hose and continue to step 4.

b.

If fluid flows out of hose, see

Clean the Gun and Gun Filter , page 27.

4.

Reassemble the hose and gun, and

repeat Fill Gun and Hose , page 16.

3A6419B EN 17

Spraying

Spraying

Start

1.

Turn pressure control knob to START position.

2.

Disengage trigger lock.

Adjust Pressure Control

To select a setting, align symbol on pressure control knob with setting indicator on sprayer.

1.

For best spray results with lowest overspray, adjust pressure control to “ START ” setting.

2.

Test the spray pattern on a test area or piece of cardboard.

3.

If needed, increase Pressure Control Knob setting to minimum setting that results in an acceptable spray pattern.

Spray Pattern Quality

A good spray pattern is evenly distributed as it hits the surface.

• Spray should be atomized (evenly distributed, no gaps at edges).

• Increase Pressure Control Knob if needed until spray is even and without gaps at edges.

• Spray Tip may be worn or a smaller tip may be needed. See

Spray Tip and

Pressure Selection , page 20.

• Material may need to be thinned. If material needs to be thinned follow manufacturer’s recommendations.

18 3A6419B EN

Spraying

Spray Techniques

Use a piece of scrap cardboard to practice these basic spraying techniques before you begin spraying the surface.

• Hold gun 12 in. (30 cm) from surface and aim straight at surface. Tilting gun to direct spray angle causes an uneven finish.

• Flex wrist to keep gun pointed straight.

Fanning gun to direct spray at angle causes uneven finish.

Aiming Gun

Aim center of spray of gun at bottom edge of previous stroke, overlapping each stroke by half.

Triggering Gun

Pull trigger after starting stroke. Release trigger before end of stroke. Gun must be moving when trigger is pulled and released.

3A6419B EN

Aligning Spray Pattern


1.

Relieve pressure. See Pressure Relief

Procedure , page 14. Engage trigger

lock.

2.

Align guard horizontally to spray a horizontal pattern.

3.

Align guard vertically to spray a vertical pattern.

19

Spraying

Spray Tip and Pressure Selection

Spray Tips come in a variety of sizes for spraying a wide range of materials. Your sprayer includes a 515 Spray Tip for use with most paints on large surfaces such as walls and ceilings.

If you are spraying stain or need a different spray fan width, refer to the Spray Tip chart below to select the best Spray Tip for your project. Additional Spray Tip sizes are available where paint sprayers are sold.

1.

What material are you spraying?

• The thicker the material, the larger

Spray Tip size you will need.

2.

What spray fan width is needed for your project?

• Narrow spray fan for smaller projects

• Wider spray fan for larger projects

Tip Number Calculation:

• The first digit is half of the fan width

(#5 x 2 = 10 inch fan width).

• The last two digits are the size of the tip opening in thousandths of an inch.

3.

Confirm your sprayer can be used with your Spray Tip size.

Material

Stain and Sealer

Semi Transparent

Stain

Solid Stain

Interior

Paint/Primer

Exterior

Paint/Primer

Fan Width

4 in Fan

Width

6 in Fan

Width

8 in Fan

Width

10 in Fan

Width

12 in Fan

Width

209

211

211

211

309

311

311

313

311

313

315

411

411

413

411

413

415

417

415

417

515

517

515

517

519

521

619

621

Sprayer Compatibility

Each Sprayer Supports a Maximum Spray Tip Size

ProX17/ProLTS170, ProX19/ProLTS190, ProX21










ProX19/ProLTS190, ProX21

ProX21

• As you spray, the Spray Tip wears and as a result, the hole size gets larger. Starting with a Spray Tip hole size smaller than the maximum will allow you to spray longer within the compatibility of the sprayer.

• Spray Tips wear with use and need periodic replacement.

20 3A6419B EN

Clear Spray Tip Clog

Spraying

2.

Engage trigger lock. Rotate Spray Tip back to SPRAY position. Disengage trigger lock and continue spraying.

SPRAY

In the event that particles or debris clog the

Spray Tip, the Spray Tip can be reversed to quickly and easily clear particles without disassembling the sprayer.

See

Strain the Paint , page 16 for additional

information.

1.

Engage trigger lock. Rotate Spray Tip to

UNCLOG position. Ensure spray tip remains fully seated, pushed all the way into the Spray Tip Guard. Disengage trigger lock. Trigger gun at waste area to clear clog.

UNCLOG

Spray Tip Installation

To avoid serious injury from skin injection do not put your hand in front of the spray tip when installing or removing the spray tip and spray tip guard.

To prevent Spray Tip leaks make certain

Spray Tip and Spray Tip Guard are installed properly.

1.

Perform

Pressure Relief Procedure , page 14.

2.

Engage trigger lock.

3.

Verify Spray Tip Guard parts are assembled in the order shown.

NOTE: If Spray Tip is difficult to rotate when turning to the UNCLOG position perform,

Pressure Relief Procedure , page 14, then

turn Prime/Spray Valve horizontal to SPRAY

position and repeat step 1.

3A6419B EN 21

Spraying a.

Use Spray Tip to align gasket and seal in the Spray Tip Guard.

c.

Turn the arrow shaped handle on the Spray Tip forward to the SPRAY position.

4.

Screw Spray Tip Guard assembly onto the gun and tighten.

b.

Spray Tip must be pushed all the way into the Spray Tip Guard.

Rotate Spray Tip while pushing down.

22 3A6419B EN

Cleanup

Cleanup

Cleaning the sprayer after each use results in a trouble free start up the next time the sprayer is used.

4.

Separate Drain Tube (smaller) from

Suction Tube (larger).

• For short term shutdown periods (overnight to two days), refer to

Short Term

Storage , page 28.

• For cleanup after using water-based materials only (by use of a garden hose), refer to

Cleanup with Power

Flush Valve , page 25.

•

For cleanup from pails, refer to Cleaning from a Pail , below.

• For cleanup after using oil-based or solvent-based flammable materials,

see Cleaning Fluid Compatibility , page 30.

Cleaning from a Pail

1.

Perform


2.

Remove Spray Tip Guard assembly from gun and place in waste pail.

ti277124a

5.

Place empty waste and flushing fluid pails side by side.

6.

Place Suction Tube in flushing fluid. For water-based paints, use water. For non-water-based paints, use mineral spirits, paint thinner, or compatible flushing fluid. Place Drain Tube in waste pail.

7.

Turn Pressure Control Knob to the

START position.

3.

Lift Suction Tube and Drain Tube from paint pail. Let paint drain into the pail.

3A6419B EN 23

Cleanup

8.

Turn Prime/Spray valve down to

PRIME position. e.

Continue to hold gun trigger until you see paint diluted with flushing fluid starting to come out of gun.

13. While continuing to trigger gun, quickly move gun to redirect spray into waste pail. Continue triggering gun into waste pail until flushing fluid dispensed from gun is relatively clear.

9.


10. Flush until approximately 1/3 of the flushing fluid is emptied from the pail.

11. Turn ON/OFF switch to OFF position.

NOTE:

Step 12 is for returning paint in hose

to paint pail. One 50 ft (15.2 m) hose holds approximately 1 quart (1 liter) of paint.

12. To recover paint in hose, point gun into paint pail while holding gun firmly to the pail.

a.

Disengage trigger lock (A). b.


c.


d.


(D).

14. Turn pressure control knob to the lowest setting.

15. Stop triggering gun. Engage the trigger lock.

ti25196b

16. Turn Prime/Spray Valve down to

PRIME position.


18. Follow Short Term Storage

or

Long

Term Storage , page 28.

24 3A6419B EN

Cleanup with Power Flush

Valve

(Water-based materials only)

Power flushing is a faster method of cleanup.

It can only be used after spraying water-based coatings.

1.

Perform


2.

Engage trigger lock. Remove Spray Tip

Guard assembly from gun and place in waste pail.

Cleanup

7.

Screw Power Flush Valve (included with sprayer) to garden hose. Close

Power Flush Valve.

8.

Turn on water. Open Power Flush

Valve. Rinse paint off Suction Tube,

Drain Tube and inlet screen. Close

Power Flush Valve.

3.

Place empty waste and paint pails side by side.

4.

Lift Suction Tube and Drain Tube from paint pail. Let paint drain into the pail.

5.

Place suction and Drain Tube in waste pail.

9.

Unscrew inlet screen from Suction

Tube. Place inlet screen in waste pail.

Connect garden hose to Power Flush

Valve on Suction Tube. Leave Drain

Tube in waste pail.

6.

Turn pressure control knob to the

START position.

10. Turn ON/OFF switch to ON position.

11. Open Power Flush Valve.

12. Circulate water through sprayer, into waste pail, for 20 seconds.


NOTE:

Step 14 is for returning paint in hose

to paint pail. One 50 ft (15.2 m) hose holds approximately 1 quart (1 liter) of paint.

14. To recover paint in hose, point gun into paint pail while holding gun firmly to the pail.

a.

Disengage trigger lock (A).

b.


3A6419B EN 25

Cleanup c.


d.


(D).

e.

Continue to hold gun trigger until you see paint diluted with flushing fluid starting to come out of gun.

16. Turn pressure control knob to the lowest setting.

17. Stop triggering gun. Engage the trigger lock.

15. While continuing to trigger gun, quickly move gun to redirect spray into waste pail. Continue triggering gun into waste pail until flushing fluid dispensed from gun is relatively clear.

18. Turn Prime/Spray Valve down to

PRIME position.


20. Follow Short Term Storage

or

Long

Term Storage , page 28.

26 3A6419B EN

Cleaning InstaClean Filter

The InstaClean Filter prevents debris from entering paint hose. After each use, remove and clean it to ensure peak performance.

1.

Perform


2.

Disconnect airless spray hose (A) from sprayer.

3.

Unscrew fluid outlet (B).

4.

Remove InstaClean filter (C).

Cleanup

Clean the Gun and Gun

Filter

1.

Perform


2.

Remove the gun handle by unscrewing the handle from the gun head.

C

B

A tti27179a

5.

Check InstaClean Filter (C) for debris. If needed, clean filter with water or flushing fluid and a soft brush.

a.

Install closed (square) end of

InstaClean Filter (C) in sprayer.

b.

Screw outlet valve (B) into sprayer.

6.

Tighten outlet valve and reconnect hose (A) to sprayer. Use two wrenches to tighten securely.

3.

Clean gun filter with water or flushing fluid and a brush every time you flush the system. Replace gun filter if damaged.

4.

Remove Spray Tip Guard assembly and clean with water or flushing fluid and a brush.

5.

See

Spray Tip Installation , page 21 to

properly reinstall Spray Tip Guard assembly.

6.

Wipe paint off outside of gun using a soft cloth moistened with water or flushing fluid.

3A6419B EN 27

Storage

Storage

With proper storage, the sprayer will be ready to use the next time it is needed.

4.

Engage trigger lock.

Short Term Storage

(up to 2 days)

1.

Disconnect power (unplug power cord).

Perform Pressure Relief Procedure , page 14.

2.

Leave Suction Tube and Drain Tube in paint pail.

ti27185a

3.

Cover paint and pail tightly with plastic wrap.

ti25196b

5.

Leave gun attached to hose.

6.

Remove Spray Tip and Spray Tip

Guard and clean with water or flushing fluid and a brush.

7.

Wipe paint off outside of gun using a soft cloth moistened with water or flushing fluid.

Long Term Storage

(more than 2 days)

Pump Armor

TM

fluid protects the sprayer against freezing and corrosion.

• Do not store the sprayer full of water.

• Do not allow water to freeze in sprayer.

• Do not store sprayer under pressure.

• Store sprayer indoors.

1.

Perform Cleanup , page 23.

2.

Remove Pump Armor bottle cap and foil seal.

3.

If needed, unscrew Inlet Screen from

Suction Tube. Turn Prime/Spray Valve down to PRIME position.

ti27186a

28 3A6419B EN

4.

Place drain tube in waste pail. Turn pressure control to the START position.

Storage

7.

Screw Inlet Screen back to Suction

Tube. Ensure that spray gun and hose stay attached to sprayer.

5.

ProX21 only:

Place Suction Tube in Pump Armor fluid bottle. Turn Power Switch ON .

8.

Turn Spray/Prime Valve horizontal to

SPRAY position for storage.

All other models:

While holding the Suction Tube above the sprayer, pour approximately 2 ounces (1/4 cup) of Pump Armor into

Suction Tube and turn Power Switch

ON .

9.

Turn ON/OFF switch to OFF position.

Disconnect power (unplug power cord).

10. Secure a plastic bag around Suction

Tube and Drain Tube to catch any drips.

6.

When Pump Armor is flushed through the sprayer and out the Drain Tube, turn Power Switch OFF . Replace and tighten child-proof cap for storage.

ti27190a

3A6419B EN 29

Reference

Reference

Lacquer Conversion Kit

To spray lacquers and other solvent-based flammable materials with models other than

ProX21, you must purchase a lacquer conversion kit and follow

Static Grounding

Instructions (Oil or Solvent-Based

Flammable Materials) , page 30. Refer to

Parts List for kit part numbers.

Cleaning Fluid

Compatibility

• When spraying water-based materials, flush the system thoroughly with water.

• When spraying lacquers or oil-based materials, flush the system thoroughly with mineral spirits or compatible oil-based flushing fluid and follow

Static Grounding Instructions (Oil or

Solvent-Based Flammable Materials) , page 30.

• To spray water-based materials after spraying oil-based materials, flush the system thoroughly with water first. The water flowing out of Drain Tube should be clear before you begin spraying the water-based material.

• To spray lacquers or oil-based materials after spraying water-based materials, flush the system thoroughly with mineral spirits or a compatible oil-based

flushing fluid first. Follow Static

Grounding Instructions (Oil or Solvent-Based Flammable Materials) , page 30. The fluid flowing out of the

Drain Tube should not contain any water.

• To avoid fluid splashing back on your skin or into your eyes, always aim gun at inside wall of pail.

30

Static Grounding Instructions

(Oil or Solvent-Based

Flammable Materials)

The equipment must be grounded to reduce the risk of static sparking. Static sparking can cause fumes to ignite or explode. Grounding provides an escape wire for the electric current.

Always use a metal pail for oil-based materials when sprayer is flushed or pressure is relieved.

Follow local code. Use only conductive metal pails, placed on a grounded surface such as concrete.

Do not place pail on a non-conductive surface such as paper or cardboard which interrupts grounding continuity.

Always ground a metal pail: connect a ground wire to the pail. Clamp one end to the pail and the other end to a true earth ground such as a water pipe.

ti24584a

To maintain ground continuity when sprayer is flushed or pressure is relieved: hold metal part of gun firmly to the side of a grounded metal pail, then trigger the gun.

3A6419B EN

Reference

Quick Reference

Page

10

A

B

C

D

Name

Power - ON/OFF Switch

Pressure Control Knob

Prime/Spray Valve

Spray Tip

N

O

P

Q

R

H

J

K

L

M

E

F

G

Y

Z

W

X

U

V

S

T

PushPrime Button

Suction Tube

Drain Tube

Airless Spray Gun

Spray Tip Guard

Gun Trigger Lock

Gun Fitting

Gun Filter (inside handle)

ProXChange™ Pump

Inlet Valve

Airless Hose Connection

Airless Hose

InstaClean Filter

Pail Hanger

Inlet Screen

Power Cord

Easy Access Door

Suction Tube Drip Cup

Pump Removal Tool

Outlet Valve

Inlet Valve Removal Tool

Power Flush Valve

Description

Turns sprayer ON and OFF.

Increases (clockwise) and decreases

(counter-clockwise) fluid pressure in pump, hose, and spray gun. To select function, align symbol on pressure control knob with setting indicator.

• In PRIME position directs fluid to Drain Tube.

• In SPRAY position directs pressurized fluid to paint hose.

• Automatically relieves system pressure in overpressure situations.

• Atomizes fluid being sprayed, forms spray pattern and controls fluid flow according to hole size.

• Reverse position unclogs plugged Spray Tips without disassembly.

Taps the inlet ball when pushed to loosen it.

Draws fluid from paint pail into pump.

Drains fluid in system during priming and pressure relief.

Dispenses fluid.

Reduces risk of fluid injection injury.

Prevents accidental triggering of spray gun.

Threaded connection for Airless Hose.

Filters fluid entering spray gun to reduce Spray Tip clogs.

Pumps and pressurizes fluid and delivers it to Airless

Hose.

Allows paint to flow from paint bucket into the sprayer.

Threaded connection for airless hose.

Transports high-pressure fluid from pump to spray gun.

• Filters fluid coming out of pump to reduce Spray

Tip clogs and improve finish.

• Self cleans only during pressure relief.

For transporting pail by its handle.

Prevents debris from entering pump.

Plugs into power source.

Permits quick access to the pump. Open pump door by pulling out on the tabs while sliding door up.

Holds the Suction Tube during transport to catch drips.

Cut out in the frame provides the tools to quickly remove the pump packing without additional tools.

Allows paint to flow from the sprayer to the gun.

Cut out in the frame provides the tools to quickly remove the inlet valve without additional tools.

Connects garden hose to Suction Tube for power flushing water-based fluids.

3A6419B EN 31

Maintenance

Maintenance

Routine maintenance is important to ensure proper operation of your sprayer.

Maintenance Activity

1.

Inspect motor shroud openings for blockage every time you spray.

2.

Clean/inspect inlet screen, InstaClean filter, and gun filter every time you spray.

Replace if the filter cannot be cleaned or is damaged.

NOTICE

Protect the internal drive parts of this sprayer from water. Openings in shroud allow cooling of mechanical parts and electronics inside. If water gets into these openings, the sprayer could malfunction or be permanently damaged.

Airless Hoses

Check hose for damage every time you spray. Do not attempt to repair hose if hose jacket or fittings are damaged. Do not use hoses shorter than 25 ft. (7.6 m). Wrench tighten, using two wrenches.

Spray Tips

• Always clean Spray Tips with compatible cleaning fluid and brush after spraying.

• Tips may require replacement after 15 gallons (57 liters) or they may last through 60 gallons (227 liters) depending on abrasiveness of paint. See

Spray Pattern Quality , page 18.

Storage/Priming Tool

Perform these steps if you are experiencing difficulty priming your sprayer.

For ProX21, see Inlet Valve Removal , page

33.

1.

Perform Pressure Relief Procedure , page 14.

2.

Remove Pump Armor bottle cap. Insert small fluid tube into bottom of Storage/Prime Tool, and thread tool onto the bottle. NOTE: For best results, make sure the bottle is full of Pump

Armor.

3.

Remove sprayer Suction Tube. Insert tool into the inlet and push up firmly until it stops.

32 3A6419B EN

4.

Squeeze Pump Armor bottle until Pump

Armor flows into the Drain Tube.

Maintenance

Inlet Valve Removal

An integrated tool is included in the frame to remove the inlet valve assembly from the pump. If you suspect that the inlet valve is clogged or stuck, remove the valve assembly and clean or replace.

1.

Insert pump inlet into frame and loosen the inlet valve. Remove inlet valve.

5.

Remove tool. Replace and tighten child-proof cap for storage.

6.

Reinstall the sprayer Suction Tube.

Ensure that the tube is snug on the inlet and the clamp is engaged.

ti27479a

2.

Remove inlet valve.

NOTICE

Do not lose the ball and spring inside the inlet valve assembly. It may fall out when the inlet valve is removed. Pump will not prime without the ball and spring.

3A6419B EN 33

Maintenance

3.

Perform a power flush. See

Cleanup with Power Flush Valve , page 25.

3.

Now lift the door so that it swings out of the way.

1


4.

Inspect for leaks. If leaks occur, perform

Pressure Relief Procedure , page 14,

then tighten all fittings and repeat step 3.

Pump Repair

2

3

When pump packings wear, paint will begin to leak down outside of pump. Purchase a pump repair kit and install according to instructions provided with kit, before your

next job. See ProXChange Pump Parts

List , page 49, or consult a Graco/MAGNUM

authorized retailer, distributor, or service center.

Each time the pump kit is replaced, check pump inlet and outlet valves for wear or damage. Replace if worn or damaged.

Always replace inlet and outlet valves every second time the pump kit is replaced.

Pump Removal

Remove airless hose, suction tube, and drain tube. Always perform

Pressure Relief

Procedure , page 14 before starting any

pump repairs and unplug the sprayer.

1.

Unplug the sprayer from the power source.

2.

Pull tabs on sides of the easy access door towards you while pushing the entire door up.

ti27463a

4.

Slide pump assembly off the mounting pins.

ti26930a

34 3A6419B EN

ProXChange Removal Tool

An integrated tool is included in the frame to remove the ProXChange packing assembly.

See ProXChange Pump manual for complete repair instructions.

Maintenance a.

Move pump rod up or down until cap is level with the opening in the yoke. ti27037a b.

Push on pump rod to slide pump assembly back on to mounting pins.

2.

Swing Easy Access Door closed while pushing the entire door down.

1 ti26931a

Pump Installation

1.

Slide pump assembly onto the mounting pins.

2

3 ti27036a ti27478a

3.

Install hose, suction tube, and drain tube.

4.

Plug sprayer into power source.

NOTE: Door must be fully closed and latched before sprayer will operate.

3A6419B EN 35

Troubleshooting

Troubleshooting

3.

Check everything in this Troubleshooting Table before you bring the sprayer to an authorized service center.

1.

Follow Pressure Relief Procedure , page 14, before checking or repairing.

2.

Solutions at the beginning of each problem listed are the most common.

Have a Question?

Call Us Toll-Free:

1-888-541-9788 or visit us at: www.magnum.graco.com

ti24021a

Problem Cause Solution

Motor does not run:

(verify sprayer is plugged in, and

ON/OFF switch is on)

Easy Access Door not fully closed

Pressure control is set at zero pressure.

Verify that Easy Access Door is closed and latched. See step 2 of

Pump Installation , page 35.

Turn pressure control knob clockwise to increase pressure setting.

Electric outlet is not providing power. Test outlet with known working device.

Reset circuit breaker or replace fuse.

Find working outlet.

Reset building circuit breaker or replace fuse.

Extension cord is damaged.

Sprayer electric cord is damaged.

Replace extension cord. See page 5.

Check for broken insulation or wires.

Replace electric cord if damaged.

Pump is seized

(Paint has hardened in pump or

Water is frozen in pump.)

Motor or control is damaged.

Turn ON/OFF switch off and unplug sprayer from outlet.

If frozen do NOT try to start sprayer until it is completely thawed or it may damage the motor, control board and/or drive train.

Place sprayer in warm area for several hours. Check for free moving pump by removing shroud and spinning fan.

If not frozen, check for hardened paint in pump. If paint has hardened in

pump. See Pump Repair , page 34.

If motor does not turn with pump removed, consult a Graco/ Magnum authorized retailer, distributor, or service center.

Consult a Graco/ Magnum authorized retailer, distributor, or service center.

36 3A6419B EN

Problem

Sprayer runs, but pump does not prime or looses prime while in use.

(Pump cycles but does not pull paint into Suction Tube or build pressure.)

Cause

Prime/Spray Valve is in SPRAY position.

Inlet screen is clogged or Suction

Tube is not completely immersed in paint.

Inlet or outlet valve ball is stuck or dirty.

Troubleshooting

Solution

Turn Prime/Spray Valve down to

PRIME position until paint exits Drain

Tube.

Clean debris off inlet screen and make sure Suction Tube is completely immersed in paint.

Press PushPrime button twice to loosen inlet valve and reprime

sprayer. See Fill Pump (Prime

Pump) , page 16.

See Storage/Priming Tool , page 32.

Then reprime pump.

Remove inlet and/or outlet valves and

clean, replace and reprime. See Fill

Pump (Prime Pump) , page 16.

• Make certain to not lose the ball and spring of the inlet valve assembly or the sprayer will not function.

See Inlet Valve Removal , page 33

.

• Make certain the outlet ball moves free in the housing before replacing.

Suction Tube is leaking.

Inspect Suction Tube connection for cracks or vacuum leaks.

Debris in paint causing obstruction.

Strain the paint. See

Strain the

Paint , page 16.

Prime/Spray Valve is worn or obstructed with debris.

Take sprayer to Graco/MAGNUM authorized service center.

3A6419B EN 37

Troubleshooting

Problem Cause Solution

Pump is primed, but can not achieve good spray pattern.

Spray Tip may be partially clogged.

See Clear Spray Tip Clog , page 21.

Reversible Spray Tip is in UNCLOG position.

Rotate arrow-shaped handle on

Spray Tip so it points forward to

SPRAY position. See page 21.

Debris in paint causing obstruction.

Strain the paint. See Clear Spray Tip

Clog , page 21.

Pressure is set too low.

Align pressure control knob setting indicator to desired spray setting. See

Clear Spray Tip Clog , page 21.

InstaClean Filter is clogged.

Spray gun filter is clogged.

Clean or replace InstaClean filter. See

Cleaning InstaClean Filter , page 27.

Clean or replace gun filter. See Clear

Spray Tip Clog , page 21.

Spray Tip selected is too large for capability of sprayer.

Spray Tip is worn beyond the capability of sprayer.

Spray Tip gasket and seal worn or missing.

Inlet screen is clogged or Suction

Tube is not immersed in paint.

Replace Spray Tip. See

Techniques

Replace Spray Tip. See

Techniques

Techniques

in paint.

, page 19.

, page 19.

, page 19.

Spray

Spray

Replace gasket and seal. See Spray

Clean debris off inlet screen and make sure Suction Tube is immersed

Extension cord is too long or not heavy enough gauge.

Inlet valve or outlet valve is worn or clogged with debris.

Material is too thick.

Airless hose is too long (if extra section was added).

Replace extension cord. See

Extension Cords: , page 6.

Check for worn or contaminated inlet valve or outlet valve.

- Prime sprayer with paint

- Trigger gun momentarily

- When trigger is released, pump should cycle momentarily and stop

- If pump continues to cycle, pump valves may be worn or contaminated with debris

- See

Storage/Priming Tool , page

32.

- Clean and reinstall valves.

- Replace valves with appropriate kits.

For kit part numbers, see

ProXChange Pump Parts List , page 49.

Thin material. Follow manufacturers recommendations.

Remove section of airless hose.

38 3A6419B EN

Troubleshooting

Solution Problem Cause

Spray gun stopped spraying while trigger is pulled.

When paint is sprayed, it runs down the wall or sags.

When paint is sprayed, coverage is inadequate.

Fan pattern varies dramatically while spraying.

Cannot trigger spray gun.

Paint is coming out of pressure control switch.

Spray Tip is clogged.

Sprayer lost prime.

Material is going on too thick.

Material is going on too thin.

Pressure control switch is worn and causing excessive pressure variation.

Spray gun trigger lock is engaged.

Pressure control switch is worn.

Paint is leaking through Drain Tube.

Sprayer is over pressurizing.

Paint leaks down outside of pump.

Motor is hot and runs intermittently.

Motor automatically shuts off due to excessive heat. Damage can occur if cause is not corrected.

Pump packings are worn.

Vent holes in enclosure are plugged or sprayer is covered.

Extension cord is too long or not a heavy enough gauge.

Unregulated electrical generator being used has excessive voltage.

Motor needs to be replaced.

See

Clear Spray Tip Clog , page 21

Reprime sprayer. See

Fill Pump

(Prime Pump) , page 16.

See

Troubleshooting , page 36.

Move gun faster.

Choose a Spray Tip with smaller hole size.

Choose Spray Tip with wider fan.

Make sure gun is far enough from surface.

Move gun slower.

Choose Spray Tip with larger hole size.

Choose Spray Tip with narrower fan.

Make sure gun is close enough to surface.

Take sprayer to Graco/M

AGNUM authorized service center.

Rotate trigger lock to disengage trigger lock.





Replace pump. See

Pump Repair , page 34.

Keep vent holes clear of obstructions and overspray and keep sprayer open to air.

Replace extension cord.

Use electrical generator with a proper voltage regulator.

Take sprayer to Graco/Magnum authorized retailer, distributor, or service center.

Online Resources

Visit Our Website:

Operational Videos:

Manuals:

Parts Online:

Material Compatibility:

3A6419B EN magnum.graco.com

magnum.graco.com/magop/ magnum.graco.com/support/#manuals magnum.graco.com/partsonline/ magnum.graco.com/downloads/MaterialCompatibility.pdf

39

ProX17, ProX19, ProLTS170 Stand Sprayer

ProX17, ProX19, ProLTS170 Stand Sprayer

Parts

Ref.

1

2

3

4

Torque

140-160 in-lb (16-18 N•m)

30-35 in-lb (3.5-4.0 N•m)

110-120 in-lb (12-14 N•m)

45-55 in-lb (5-6 N•m)

2

2

2

1

See page 48.

2

3

4

3

40 3A6419B EN

ProX17, ProX19, ProLTS170 Stand Sprayer

ProX17, ProX19, ProLTS170 Stand Sprayer Parts List

Ref. Part Description

1

1

4

1

1

1

1

1

Ref. Part Description

Qty.

30 247340 HOSE, cpld,

1/4 in. x 50 ft

31

17J033 ProX19

17J032 ProLTS170

GUN, spray, SG3

243012 Models 17G177,

17G179, 17H198

246506 Model 17K438

1

32 115099 WASHER, hose

34 244035 DEFLECTOR, barbed 1

1

1

2

1

1

35 115489 CLAMP, drain tube

36 195084 TUBE, drain

37 24V074 KIT, tube, suction includes 32, 34, 35, 36,

37a, 38, 39, 40

37a 197607 TUBE, suction includes 32

38 116295 CLAMP, tube

39 195400 CLIP, spring

40 KIT, inlet screen

288716 ProX17 and ProX19

257002 ProLTS170

45 17H422 CUP, suction/drain

56  17J027 LABEL, warning

57  179960 CARD, medical alert

(not shown)

60 17Y786 GUIDE, Magnum quick

1

1

1

1

1

1

2

1

1

1

1 guide, (not shown)

61 115648 VALVE, power flush

(not shown)

62 17S980 FLUID, pump armor, 8

1

1 oz (not shown)

64 17Y794 TAG, hang, tip (not shown)

65  15G026 TAG, warning, hose,

(not shown)

17L305 KIT, conversion, lacquer, stand (sold separate)

1

1

2

1

1

 Replacement Danger and Warning labels, tags, and cards are available at no cost.

3A6419B EN 41

ProX21 Stand Sprayer Parts

ProX21 Stand Sprayer Parts

Ref.

1

2

3

Torque

140-160 in-lb (16-18 N•m)

30-35 in-lb (3.5-4.0 N•m)

110-120 in-lb (12-14 N•m)

2

2

2

1

See page

48.

2

2

3

3

42 3A6419B EN

ProX21 Stand Sprayer Parts

ProX21 Stand Sprayer Parts List

Ref.

Part Description

Qty.

1 MOTOR, 120V includes

1a, 22

17K684 Series A

17F757 Series B

1a 16X980 FAN

2 17J869 KIT, gear and yoke

3 17J173 CORD, power

4 17J864 KIT, yoke

6 117493 SCREW, mach, hex, washer head

7 17J875 KIT, pump complete

8 SHIELD, motor, blue includes 9, 56

17K688 Series A

17J865 Series B

9 118444 SCREW, mach, hwhd

10-24 x 0.5 in.

10 17J866 COVER, front includes

9, 10a, 10b, 12, 14

10a 128551 CABLE, jumper, PC

10b 17F262 COVER, wire

12 115478 SCREW, mach, Torx, pan hd

1

1

13 15X737 SWITCH, bracket 1

14 17F233 COVER, pump, locking 1

15 17J867 KIT, control board 120V includes 15a, 16

1

15a 119276 FUSE, 12.5A slow blow 1

16 117501 SCREW, plastite 1

1 17 24Y329 KIT, switch, repair includes 13

18 115498 SCREW, mach, slot, hex whd

19 17G329 PLATE, pump

20 15E823 FRAME, standmount

22 260212 SCREW, hwh, thread forming

23 15G857 CAP, leg

24 276864 HANDLE, sprayer

1

4

1

1

1

4

1

1

3

1

1

4

1

1

1

1

1

1

1

Ref.


25 116139 GRIP, handle

27 17J035 LABEL, front, ProX21

30 247340 HOSE, cpld,

1/4 in. x 50 ft

31 243012 GUN, spray,SG3

37 17J870 KIT, suction set includes 37a, 44, 46,

47, 48, 49, 50

37a 17J719 HOSE, suction

43 122667 SCREW, drill, hex, washer head

44 17J884 TUBE, drain includes

46

45 15G838 CUP, suction/drain

46 244035 DEFLECTOR, barbed

47 245673 KIT, strainer

48 404989 STRAP, tie


50 117559 O-ring



(not shown)

60 17Y786 GUIDE, Magnum quick guide, (not shown)


(not shown)

62 244168 FLUID, pump armor, 8 oz (not shown)


65 288686 ADAPTER, power flush

(not shown)


(not shown)

Qty.

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

2

1

1

1

1


3A6419B EN 43

ProX17, ProX19, ProLTS190 Cart Sprayer

ProX17, ProX19, ProLTS190 Cart Sprayer

Parts

Ref.

2

3

4

Torque

30-35 in-lb (3.5-4.0 N•m)

110-120 in-lb (12-14 N•m)

45-55 in-lb (5-6 N•m)

2

2

2

2

3

4

See page 48.

3

44 3A6419B EN

ProX17, ProX19, ProLTS190 Cart Sprayer

ProX17, ProX19, ProLTS190 Cart Sprayer Parts List

Ref.


Qty.

1 17F756 MOTOR, 120V includes1a, 22

1a 287770 FAN

2 17J863 KIT, gear and yoke

3 17J173 CORD, power

4 17J864 KIT, yoke

7 17J874 KIT, pump complete

8 17J865 SHIELD, motor, blue includes 9 and labels


10-24 x 0.5 in.


9, 10a, 10b, 12, 14



12 115478 SCREW, mach, Torx,

1

3

1

13 pan hd

15X737 SWITCH, bracket 1


1 15 17J867 KIT, control board 120V includes 15a, 16





19 17G541 PLATE, motor, mount

20 LEG, right

262014 ProX17 includes 22, 54,

1

1

1

21

55

17K185 ProX19 and ProLTS190 includes 54, 55

LEG, left

262012 ProX17 includes 22, 54,

55

17K186 ProX19 and ProLTS190 includes 54, 55


26 24V073 TUBE, suction, assembly includes 26a,

26a 16H348 TUBE, suction includes 49

27

43, 44, 45, 46, 47, 48,

49, 61

LABEL, front

17J031 ProX17

17J033 ProX19

17J034 ProLTS190

30 247340 HOSE, cpld,

1/4 in. x 50 ft

31 GUN, spray, SG3

1

1

1

8

1

1

1

1

1

1

1

1

1

1

1

1

1

1

Ref.


Qty.

246506 Model 17K439

34 112612 CAP, hub

35

243012 Models 17G178,

17G180, 17H206

WHEEL includes 34

24Y324 ProX17

17K546 ProX19, ProLTS190

36 115480 KNOB, T-handle

37 120689 NUT, hex, acorn,

5/16-18

38 17J430 HOOK, pail

39

16W362 ProX19, ProLTS190

40 16H350 RACK, hose

41

AXLE, cart

15R602 ProX17

HANDLE, cart

16H354 ProX17

16H353 ProX19, ProLTS190

42 120788 SCREW, carriage

43 115489 CLAMP, drain tube

44 195108 TUBE, drain



47 STRAINER, inlet

288716 ProX17 and ProX19

257002 ProLTS190

48 116295 CLAMP, tube


54 15J699 CAP, tube

55

1

1

2

1

CAP, tube

15J695 ProX17

16W505 ProX19, ProLTS190 right

16W517 ProX19, ProLTS190 left 1



(not shown)

1

1

1

2

1

1

1

2

60 17Y786 GUIDE, Magnum quick guide, (not shown)


(not shown)

62 17S980 FLUID, pump armor, 8 oz (not shown)



1

1

1

1

2

2

2

2

1

1

1

1

1

1

1

1

1

2

1

(not shown)

17J873 KIT, conversion, lacquer, cart (sold separate)


3A6419B EN 45

ProX21 Cart Sprayer Parts

ProX21 Cart Sprayer Parts

Ref.

2

3

Torque

30-35 in-lb (3.5-4.0 N•m)

110-120 in-lb (12 -14 N•m)

2

2

2

2

3

See page 48.

3

46 3A6419B EN

ProX21 Cart Sprayer Parts

ProX21 Cart Sprayer Parts List

Ref.

1


KIT, repair, motor, 120V

4

7

2

3

8 includes 1a, 22

17K684 Series A

17F757 Series B

1a 16X980 FAN

17J869 KIT, gear and yoke

17J173 CORD, power

17J864 KIT, yoke

17J875 KIT, pump complete

SHIELD, motor, blue includes 9, 56

17K688 Series A

17J865 Series B


10-24 x 0.5 in.


Qty.

1

9, 10a, 10b, 12, 14



12 115478 SCREW, mach, Torx,

1

1

13 pan hd

15X737 SWITCH, bracket 1


1 15 17J867 KIT, control board 120V includes 15a, 16





20 17C485 FRAME


26 17J871 TUBE, suction, intake includes 26a, 44, 46,

47, 49, 50 51, 52, 53

26a 17L281 TUBE, suction

27 17J035 LABEL, front, ProX21

1

1

1

4

1

1

1

1

3

1

1

1

1

1

1

1

Ref.


Qty.

30 247340 HOSE, cpld,

1/4 in. x 50 ft

31 243012 GUN, spray,SG3

34 119452 CAP, hub

35 119451 WHEEL, semi-pneumatic

38 17J430 HOOK, pail

41 287489 HANDLE, assembly,

1

Hi-cart

42 109032 SCREW, machine, pnh 4

1

1

44 17L393 TUBE, drain


47 245673 STRAINER, inlet


50 103413 PACKING, O-ring

51 15B652 WASHER, suction

52 15E813 NUT, jam




(not shown)

60 17Y786 GUIDE, Magnum quick

1

2

2

1

1

1

1

1

1

1

1

1

1

1 guide, (not shown)


(not shown)

62 244168 FLUID, pump armor,

8 oz (not shown)


65 288686 ADAPTER, power flush

(not shown)


(not shown)

1

1

1

1

1


3A6419B EN 47

ProXChange Pump Parts

ProXChange Pump Parts

2

3

4

5

Ref.

1

Torque

140-160 in-lb (16-18 N•m)

30-35 in-lb (3.4-4.0 N•m)

30-35 ft-lb (40-48 N•m)

220-250 in-lb (25-28 N•m)

320-380 in-lb (36-43 N•m)

48

3 25

16

21

28

30

1

28a

28b

28c

2

3

4

6a

2

5

29

4

8

9

10

1

11

5

15

42

12

13

6

4

14

5

7a

7

4

7b

3A6419B EN

ProXChange Pump Parts

ProXChange Pump Parts List

i

Ref.


1 17G447 HOUSING, pump

2 17D364 GUIDE, ball

3 128336 SPRING, compression

4 105445 BALL, 0.5 in.

5 117501 SCREW, mach, slot

6

HWH

KIT, inlet housing

17J876 ProX17, ProX19

17J877 ProX21

6a 124582 O-ring

7 17J878 KIT, PushPrime includes 7a, 7b

7a 16P303 PACKING, O-ring

7b 17G540 LABEL, PushPrime

8 235014 VALVE, drain, assy

9 224807 BASE, valve

10 187625 HANDLE, valve, drain

11 111600 PIN, grooved

12 288747 KIT, filter

Qty.

1

1

2

1

1

1

1

1

1

1

1

1

1

1

1

1

Ref.


13 120776 PACKING, O-ring

14 24Y327 KIT, repair outlet includes 12,13

15 17J880 KIT, outlet valve repair

Qty.

1

1

1

1

1

1

1

3A6419B EN 49

Wiring Diagram - 110/120V

Wiring Diagram - 110/120V

M ti27233a

50 3A6419B EN

Notes

Notes

3A6419B EN 51

Technical Specifications

Technical Specifications

US

Sprayer

Maximum fluid working pressure

Maximum Delivery

ProX17, ProLTS170

ProX19, ProLTS190

ProX21

Maximum Spray Tip Size

ProX17, ProLTS170

ProX19, ProLTS190

ProX21

Fluid Outlet npsm

Generator Minimum

Power Requirements

ProX17, ProX19,

ProLTS170, ProLTS190

ProX21

Dimensions

Height

ProX17, ProX19, ProLTS170

Stand

ProX21 Stand

ProX17 Cart

ProX19, ProLTS190 Cart

ProX21 Cart

Length


Stand

ProX21 Stand

ProX17 Cart


ProX21 Cart

Width


Stand

ProX21 Stand

ProX17 Cart


ProX21 Cart

Weight


Stand

3000 psi

0.34 gpm

0.38 gpm

0.47 gpm

0.017 in.

0.019 in.

0.021 in.

1/4 in.

21.2 in.

18.4 in.

37.0 in.

36.7 in.

38.5 in.

15.1 in.

16.7 in.

19.6 in.

20.2 in.

20.8 in.

13.2 in.

13.5 in.

15.2 in.

17.2 in.

20.6 in.

27.3 lb.

2500 W

110–120V, 8 A, 1Ø

110–120V, 12 A, 1Ø

Metric

207 bar, 20.7 MPa

1.3 lpm

1.4 lpm

1.8 lpm

0.43 mm

0.48 mm

0.53 mm

1/4 in.

53.9 cm

46.7 cm

94.0 cm

93.0 cm

97.8 cm

38.4 cm

42.4 cm

49.8 cm

51.3 cm

52.8 cm

33.5 cm

34.3 cm

38.6 cm

43.7 cm

52.3 cm

12.4 kg

52 3A6419B EN

Technical Specifications

ProX21 Stand

ProX17 Cart


ProX21 Cart

US

25.0 lb.

37.5 lb.

41.2 lb.

49.5 lb.

Metric

11.3 kg

17.0 kg

18.7 kg

22.5 kg

Storage temperature range  –30° to 160°F

–35° to 71°C

Operating temperature range  40° to 115°F

4° to 46°C

Materials of Construction

Wetted materials on all models stainless steel, brass, leather, ultra-high molecular weight polyethylene (UHMWPE), carbide, nylon, aluminum, PVC, polypropylene, fluoroelastomer, plated steel

Notes

* Startup pressures and displacement per cycle may vary based on suction condition, discharge head, air pressure, and fluid type.

 When pump is stored with non-freezing fluid. Pump damage will occur if water or latex paint freezes in pump.

 Damage to plastic parts may result if impact occurs in low temperature conditions.

 Changes in paint viscosity at very low or very high temperatures can affect sprayer performance.

3A6419B EN 53

Graco Standard Warranty

Graco Standard Warranty

Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects in material and workmanship on the date of sale to the original purchaser for use. With the exception of any special, extended, or limited warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by Graco to be defective. This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco’s written recommendations.

This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by faulty installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution of non-Graco component parts.

Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility of equipment with structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture, installation, operation or maintenance of structures, accessories, equipment or materials not supplied by Graco.

This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for verification of the claimed defect. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts. The equipment will be returned to the original purchaser transportation prepaid. If inspection of the equipment does not disclose any defect in material or workmanship, repairs will be made at a reasonable charge, which charges may include the costs of parts, labor, and transportation.

THIS WARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR

IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTY OF MERCHANTABILITY OR WARRANTY

OF FITNESS FOR A PARTICULAR PURPOSE .

Graco’s sole obligation and buyer’s sole remedy for any breach of warranty shall be as set forth above.

The buyer agrees that no other remedy (including, but not limited to, incidental or consequential damages for lost profits, lost sales, injury to person or property, or any other incidental or consequential loss) shall be available. Any action for breach of warranty must be brought within two (2) years of the date of sale.

GRACO MAKES NO WARRANTY, AND DISCLAIMS ALL IMPLIED WARRANTIES OF

MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, IN CONNECTION WITH

ACCESSORIES, EQUIPMENT, MATERIALS OR COMPONENTS SOLD BUT NOT MANUFACTURED

BY GRACO . These items sold, but not manufactured by Graco (such as electric motors, switches, hose, etc.), are subject to the warranty, if any, of their manufacturer. Graco will provide purchaser with reasonable assistance in making any claim for breach of these warranties.

In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from

Graco supplying equipment hereunder, or the furnishing, performance, or use of any products or other goods sold hereto, whether due to a breach of contract, breach of warranty, the negligence of Graco, or otherwise.

FOR GRACO CANADA CUSTOMERS

The Parties acknowledge that they have required that the present document, as well as all documents, notices and legal proceedings entered into, given or instituted pursuant hereto or relating directly or indirectly hereto, be drawn up in English. Les parties reconnaissent avoir convenu que la rédaction du présente document sera en Anglais, ainsi que tous documents, avis et procédures judiciaires exécutés, donnés ou intentés, à la suite de ou en rapport, directement ou indirectement, avec les procédures concernées.

54 3A6419B EN

Graco Information

Graco Information

For the latest information about Graco products, visit www.graco.com

.

For patent information, see www.graco.com/patents .

TO PLACE AN ORDER, contact your Graco distributor or call 1-800-690-2894 to identify the nearest distributor.

3A6419B EN 55

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.

Original instructions.

This manual contains English. MM 3A6419

Graco Headquarters: Minneapolis

International Offices: Belgium, China, Japan, Korea

GRACO INC. AND SUBSIDIARIES • P.O. BOX 1441 • MINNEAPOLIS MN 55440-1441 • USA

Copyright 2018, Graco Inc. All Graco manufacturing locations are registered to ISO 9001.

www.graco.com

Revision B, February 2019

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