Graco 334730A User Manual

Operation, Parts

FinishPro II 395 PC

334730A

Airless/Air-Assisted Sprayer

For professional use only. Not approved for use in explosive atmospheres or hazardous locations. For portable application of architectural paints and coatings.

Models: 17C417, 17C418, 17C421, 17C320, 17C321

3300 psi (228 bar, 22.8 MPa) Maximum Working Pressure

See page 3 for additional model information.

Important Safety Instructions

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

Gun - 333182 Pump - 334599

Related Manuals

Use only genuine Graco replacement parts. The use of non-Graco replacement parts may void warranty.

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Contents

Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Component Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Extension Cords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Pails . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Pressure Relief Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Spray Tip Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Spray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Clear Tip Clog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Digital Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Cleanup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Mechanical/Fluid Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Sprayer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Sprayers Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Control and Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Control and Filter Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Compressor Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

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

120V, US/Japan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

110V, UK / 230V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Graco Standard Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

2 334730A

Models

110474

Certified to

CAN/CSA

C22.2 No. 68

Conforms to

UL 1450

Models

VAC Model

120

USA

230

CEE 7/7

230 Europe

Multicord

110

230

Asia/ANZ

230

China

FinishPro II 395 PC

17C417

17C418

17C421

17C320

17C321

334730A 3

Warnings

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120V US 230V 230V ANZ

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 or 230V circuit and has a grounding

plug similar to the plugs illustrated below.

• 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 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 (2.5mm2) 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 334730A

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 at 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 (SDS) 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.

334730A 5

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 3300 psi. Use Graco replacement parts or

accessories that are rated a minimum of 3300 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.

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.

6 334730A

Warnings

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.

• 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 MSDSs 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.

BURN HAZARD

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

• Do not touch hot fluid or equipment.

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.

334730A 7

Component Identification

Y Z

Component Identification

Power/Function Selector

Pressure Control

Air Hose Connection

Prime Valve

Gun Filter

Tip Guard

Spray Tip

Gun

Airless Hose

Power Cord

Trigger Lock

Drain Tube

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Fluid Intake

Pump

Fluid Outlet

Hanger

Filter

Finger Guard / TSL Fill Point

Pail Hook

Display

Gun Air Regulator

Sprayer Air Pressure Regulator

Air Pressure Gauge Model/Serial Tag (Not shown.)

8 334730A

Grounding

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Grounding

The equipment must be grounded to reduce the risk of static sparking and electric shock. An electric or static spark can cause fumes to ignite or explode. An improper ground can cause electric shock. A good ground provides an escape wire for the electric current.

This sprayer includes a ground wire with an appropriate ground contact.

The plug must be plugged into an outlet that is properly installed and grounded in accordance with all local codes and ordinances.

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

Power Requirements

• 100-120V units require 100-120 VAC,

50/60 Hz, 15A, 1 phase.

• 230V units require 230 VAC, 50/60 HZ,

10A, 1 phase.

Extension Cords

Use an extension cord with an undamaged ground contact. If an extension cord is necessary, use a 3-wire, 12 AWG (2.5 mm2) minimum.

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

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.

To maintain ground continuity when sprayer is flushed or pressure is relieved:

hold metal part of spray gun firmly to the side of a grounded metal pail then trigger the gun.

Pails

Solvent and oil-based fluids: follow local

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

334730A 9

Pressure Relief Procedure

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Pressure Relief Procedure

Follow the Pressure Relief Procedure whenever you see this symbol.

This equipment stays pressurized until pressure is manually relieved. To help prevent serious injury from pressurized fluid, such as skin injection, splashed fluid and moving parts, follow the Pressure Relief Procedure whenever sprayer is stopped and before sprayer is cleaned or checked, and before equipment is serviced.

1. Set SELECTOR switch to OFF position. Wait 7 seconds for power to dissipate.

2. Engage trigger lock.

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3. Turn pressure control to lowest setting. Disengage trigger lock.

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4. Hold a metal part of the gun firmly to a grounded metal pail. Trigger the gun to relieve pressure.

5. Engage trigger lock.

10 334730A

Pressure Relief Procedure

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6. Put drain tube in pail. Turn prime valve down. Leave prime valve in down (drain) position until you are ready to spray again.

7. If you suspect the spray tip or hose is clogged or that pressure has not been fully relieved:

a. VERY SLOWLY loosen tip guard

retaining nut or hose end coupling to relieve pressure gradually.

b. Loosen nut or coupling completely.

c. Clear hose or tip obstruction.

Trigger Lock

Always engage the trigger lock when sprayer is stopped to prevent the gun from being triggered accidentally by hand or if dropped or bumped.

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334730A 11

Setup

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Setup

When unpacking sprayer for the first time or after long term storage perform setup procedure. When first setup is performed remove shipping plug from fluid outlet.

1. Connect Graco airless hose to fluid outlet. Use wrenches to tighten securely.

3. Use wrenches to tighten securely.

4. Engage trigger lock.

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5. Remove tip guard/air cap.

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6. When unpacking sprayer for the first

2. Connect other end of hose to gun.

12 334730A

time remove packaging materials from inlet strainer. After long term storage check inlet strainer for clogs and debris.

7. Fill throat packing nut with TSL to

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prevent premature packing wear. Do this daily or each time you spray.

a. Place the TSL bottle nozzle into the

top center opening in the grill at the front of the sprayer.

b. Squeeze bottle to dispense enough

TSL to fill the space between the pump rod and packing nut seal.

Setup

8. Make certain SELECTOR switch is OFF.

9. Plug power supply cord into a properly grounded electrical outlet.

10. Turn prime valve down.

334730A 13

Setup

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11. Place fluid intake with drain tube in grounded metal pail partially filled with flushing fluid. See Grounding, page 9.

NOTE: New sprayers are shipped with storage fluid that must be flushed out with mineral spirits prior to using the sprayer.

Check flushing fluid for compatibility with material that is to be sprayed. A secondary flush with a compatible fluid may be necessary. Use water for latex paint or mineral spirits for oil-based paint.

12. Turn pressure control to lowest setting.

13. Set SELECTOR switch to AIRLESS position.

14. Turn prime valve horizontal. Disengage trigger lock.

15. Increase pressure 1/2 turn to start motor.

16. Hold a metal part of the gun firmly to a grounded metal pail. Trigger gun and flush for one minute.

17. Set SELECTOR switch to OFF position.

18. Engage trigger lock.

19. After flushing storage fluid out of the sprayer empty pail. Replace fluid intake with drain tube in grounded metal pail partially filled with flushing fluid. Use water to flush water-based paint or mineral spirits to flush oil-based paint.

20. Set SELECTOR switch to AIRLESS position.

21. Turn prime valve horizontal. Disengage trigger lock.

22. Hold a metal part of the gun firmly to a grounded metal pail. Trigger gun and flush until clean.

23. Set SELECTOR switch to OFF position.

24. Engage trigger lock.

25. Sprayer is now ready to startup and spray in airless mode.

26. Attach air hose to sprayer air hose connection.

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27. Cut air hose to length and couple to air connection on gun.

28. Sprayer is now ready to startup and spray in air-assisted (AA) mode.

14 334730A

Startup

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15 s

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1. Perform Pressure Relief Procedure, page 10.

2. Turn pressure control to lowest pressure.

Startup

5. Increase pressure 1/2 turn to start motor. Allow paint to circulate through drain tube for 15 seconds.

6. Turn prime valve horizontal. Disengage trigger lock.

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3. Set SELECTOR switch to AIRLESS position.

7. Hold gun against grounded metal waste pail. Trigger gun until paint appears.

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4. Place fluid intake in paint pail. Place drain tube in waste pail.

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334730A 15

Startup

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20 s

8. Move gun to paint pail and trigger for 20 seconds. Release trigger and allow sprayer to build pressure. Engage trigger lock.

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

9. Inspect for leaks. If leaks occur, perform Pressure Relief Procedure, page 10, then tighten all fittings and repeat Startup procedure. If there are no leaks continue with the next step.

10. Screw tip assembly onto gun and tighten. See Spray Tip Installation, page 17. For gun assembly instructions, see separate gun manual.

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16 334730A

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