Graco Inc Delta Spray 308741N User Manual

Instructions – Parts List

Parts

Delta Sprayt HVLP Spray Gun

100 psi (0.7 MPa, 7 bar) Maximum Working Fluid Pressure 100 psi (0.7 MPa, 7 bar) Maximum Working Air Pressure 40 psi (280 kPa, 2.8 bar) Maximum Compliant Inbound Air Pressure

U.S. Patent 6,019,293 Taiwan Patent 199585 Taiwan Patent 199601

INSTRUCTIONS

This manual contains important warnings and information. READ AND KEEP FOR REFERENCE.

308741N

Table of Contents

Symbols 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Selection Charts 4. . . . . . . . . . . . . . . . . . . . . . . .

Air Flow and Atomizing Pressure 6. . . . . . . . . .

Typical Installation 7. . . . . . . . . . . . . . . . . . . . . . .

Setup 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operation 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Daily Gun Care, Flushing, and Cleaning 13. . .

GRACO INC.ąP.O. BOX 1441ąMINNEAPOLIS, MNą55440-1441

Troubleshooting 17. . . . . . . . . . . . . . . . . . . . . . . .

Service 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Accessories 28. . . . . . . . . . . . . . . . . . . . . . . . . . .

Dimensions 30. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Technical Data 30. . . . . . . . . . . . . . . . . . . . . . . . .

Graco Standard Warranty 32. . . . . . . . . . . . . . .

Graco Information 32. . . . . . . . . . . . . . . . . . . . . .

Symbols

Warning Symbol

WARNING

This symbol alerts you to the possibility of serious injury or death if you do not follow the instructions.

WARNING

EQUIPMENT MISUSE HAZARD

INSTRUCTIONS

Equipment misuse can cause the equipment to rupture, malfunction or start unexpectedly and result in serious injury.

D This equipment is for professional use only.

D Read all instruction manuals, tags, and labels before operating the equipment.

D Use the equipment only for its intended purpose. If you are uncertain about usage, call your Graco

distributor.

D Do not alter or modify this equipment. Use only genuine Graco parts and accessories.

D Check equipment daily. Repair or replace worn or damaged parts immediately.

Caution Symbol

CAUTION

This symbol alerts you to the possibility of damage to or destruction of equipment if you do not follow the instructions.

D Use this equipment only in low pressure, air spray systems.

D Do not exceed the maximum working pressure of the lowest rated system component. This equip-

ment has a 100 psi (0.7 MPa, 7 bar) maximum working fluid and air pressure.

D Route the hoses away from the traffic areas, sharp edges, moving parts, and hot surfaces. Do not

expose Graco hoses to temperatures above 180_F (82_C) or below –40_F (–40_C).

D Wear hearing protection when operating this equipment.

D Use fluids or solvents that are compatible with equipment wetted parts. See the Technical Data

section of all equipment manuals. Read the fluid and solvent manufacturer’s warnings.

D Methylene Chloride with formic or propionic acid is not recommended as a flushing or cleaning

solvent with this gun or any other device with nylon or aluminum components as it can damage these parts.

D Comply with all applicable local, state and national fire, electrical and other safety regulations.

2 308741

WARNING

PRESSURIZED EQUIPMENT HAZARD

Spray from the gun, hose leaks or ruptured components can splash fluid in the eyes or on the skin and cause serious injury.

D Do not stop or deflect fluid leaks with your hand, body, glove or rag.

D Follow the Pressure Relief Procedure on page 12 when: you are instructed to relieve pressure;

stop spraying; clean, check or service the equipment; and install or clean fluid nozzles.

D Do not point the spray gun at anyone or at any part of the body.

D Tighten all fluid connections before operating the equipment.

D Check the hoses, tubes and couplings daily. Replace worn, damaged or loose parts immediately.

Permanently coupled hoses cannot be repaired; replace the entire hose.

FIRE AND EXPLOSION HAZARD

Poor air ventilation, open flames, or sparks can cause a hazardous condition and result in fire or explosion and serious injury.

D Provide fresh air ventilation to avoid the buildup of flammable fumes from solvent or the fluid being

sprayed.

D Extinguish all open flames or pilot lights in the spray area.

D Electrically disconnect all equipment in the spray area.

D Keep the spray area free of debris, including solvent, rags and gasoline.

D Do not turn on or off any light switch in the spray area while operating or if fumes are present.

D Do not smoke in the spray area.

D Do not operate a gasoline engine in the spray area.

TOXIC FLUID HAZARD

Hazardous fluids or toxic fumes can cause serious injury or death if splashed in the eyes or on the skin, inhaled, or swallowed.

D Know the specific hazards of the fluid you are using. Read the fluid manufacturer’s warnings.

D Store hazardous fluid in an approved container. Dispose of hazardous fluid according to all local,

state and national guidelines.

D Dress appropriately for your application. Wear the appropriate protective clothing, gloves, eyewear,

and respirator.

308741 3

Selection Charts

TERMS:

Light Fluid: Up to 18 seconds with No. 2 Zahn cup (20 centipoise)

Medium Fluid: 19 to 28 seconds with No. 2 Zahn cup (20–64 centipoise)

Heavy Fluid: Greater than 28 seconds with No. 2 Zahn cup (greater than 64 centipoise) --

2.8 Volatile Organic Compounds, High-solid Polyurethanes, Heavy Waterborne Enamels

NOTE: See pages 24–27 for further part number information.

HVLP Spray Gun Assemblies

Pressure Feed Guns

Gun Assy. Includes:

Needle/

Nozzle Kit

Part No. Part No.

239559

239560

239561

239562

239563

239564

239565*

239566*

239567*

239600 192321 pressure 0.030 (0.762) 15 (381) light 4–10 (0.12–0.30)

239601 192321 pressure 0.042 (1.067) 16 (406) light-medium 8–14 (0.24–0.42)

239602 192321 pressure 0.055 (1.397) 16 (406) medium 12–18 (0.36–0.54)

239603 192322 pressure 0.070 (1.778) 17 (432) medium-

239604 192322 pressure 0.086 (2.184) 17 (432) heavy 18–22 (0.54–0.66)

239605 192323 pressure 0.110 (2.790) 18 (457) heavy 20–24 (0.60–0.72)

239606* 192321 pressure 0.042 (1.067) 16 (406) light-medium 8–14 (0.24–0.42)

239607* 192321 pressure 0.055 (1.397) 16 (406) medium 12–18 (0.36–0.54)

239598 192322 pressure 0.070 (1.778) 17 (432) medium-

Air Cap

Part No. Type

Orifice

Size

in. (mm) in. (mm)

Pattern

Length{

Material Usage:

Viscosity Flow

oz./min. (l/min.)

16–20 (0.48–0.60)

heavy

16–20 (0.48–0.60)

heavy

Gravity Feed Guns

Gun Assy. Includes:

Needle/

Nozzle Kit

Part No. Part No.

239574

239575

* Stainless steel needle/tip { Measured with gun nozzle 10 in. (254 mm) from target surface

239592 192329 gravity 0.055 (1.397) 14 (356) light-medium 3–5 (0.09–0.15)

239593 192329 gravity 0.070 (1.778) 16 (406) light-medium 4–6 (0.12–0.18)

Part No. Type

4 308741

Air Cap

Orifice

Size

in. (mm) in. (mm)

Pattern

Length{

Material Usage:

Viscosity Flow

oz./min. (l/min.)

Selection Charts

G G

HVLP Spray Gun and Pressure Cup Assemblies

Includes:

un and Cup

Assy. Part No.

239568 239560 239802

239569 239561 239802

239570 239562 239802

239571 239563 239802

Gun Part No. Cup and Reg-

ulator Part No.

1 qt. (0.95 liter)

HVLP Spray Gun and Gravity Cup Assemblies

Includes:

un and Cup

Assy. Part No.

239579 239574 239714

239580 239575 239714

Gun Part No. Cup Part No.

16 oz. (474 cc)

Selecting the Proper Needle/Nozzle Kit

The spray gun’s needle/nozzle kits range in size to provide different fluid flow rates.

As a general guideline, use the fluid nozzle that will give the required flow with the needle fully triggered at the lowest fluid pressure.

For low flow rates or light viscosity fluid, select the smaller nozzle sizes.

For high flow rates or high viscosity fluid, select the larger nozzle sizes.

NOTE:

D To help select the proper needle/nozzle size, a fluid

pressure gauge may be connected temporarily to the gun fluid inlet to determine the fluid pressure. See Accessories, page 28.

D See page 17 for troubleshooting information.

Optional HVLP Air Caps

Air Cap Part

No.

196107 Shading/SAP 6 (152)

† measured with gun nozzle 10 in. (254 mm) from target surface

Pattern Type Pattern

Length†

in. (mm)

308741 5

Air Flow and Atomizing Pressure

NOTE: All tests were completed with the 0.055 in. (1.397 mm) nozzle, large pattern air cap, and the pattern adjust-

ment valve fully open.

Air Flow

AIR FLOW (scfm)

10 20 30 40 50 60 70

GUN INLET PRESSURE (psi)

Atomizing Air Pressure

(inlet pressure versus atomizing pressure)

NOMINAL ATOMIZING PRESSURE (psi)

10 20 30 40 50 60 70

GUN INLET PRESSURE (psi)

Gun Inlet Pressure

psi (kPa, bar)

10 (70, 0.7) 1 (7, 0.1)

20 (140, 1.4) 4 (28, 0.2)

30 (210, 2.1) 7 (48, 0.4)

40 (280, 2.8) 10 (70, 0.7)

50 (345, 3.4) 13 (91, 0.9)

60 (410, 4.1) 16 (111, 1.1)

70 (480, 4.8) 19 (132, 1.3)

Nominal Atomizing Pressure

psi (kPa, bar)

6 308741

Typical Installation

KEY

A Delta Spray Gun

See page 4 for gun part numbers. B Fluid Inlet; 3/8 npsm (R3/8–19) C Air Swivel Inlet; 1/4 npsm (R1/4–19) D Air Hose

Recommend 5/16” (7.9 mm) ID hose

Optional 3/8” (9.5 mm) ID hose

E Air Shut-off Valve F Air Regulator G Air Filter H Air Supply Line

EF G

07600A

The Delta Spray HVLP spray gun was designed to produce the highest quality finish with today’s fluids as well as the Low V.O.C. (volatile organic compound) fluids of tomorrow.

This spray gun can spray most coatings or finishes currently being used for automotive, industrial, aerospace, marine, wood, plastic and architectural applications, while easily operating from any paint delivery system, including cups, pressure pots, or remote pumps for production line operation.

The spray gun typically utilizes 40 psi (280 kPa, 2.8 bar) inbound air pressure to produce high quality paint finishes at 10 psi (70 kPa, 0.7 bar) atomizing air pressure.

The air regulator must have a minimum air flow capacity of 30 scfm at 100 psi (0.7 MPa, 7 bar) air pressure. Refer to the Pressure Drop Charts, page

11.

Ventilate the Spray Booth

WARNING

To prevent hazardous concentrations of toxic and/or flammable vapors, spray only in a properly ventilated spray booth. Do not operate the spray gun unless ventilation fans are operating.

Check and follow all of the National, State and Local codes regarding air ex-

haust velocity requirements.

Check and follow all local safety and fire codes.

308741 7

Setup

1. Connect the Air Line

NOTE:

D You must install an air pressure regulator (F) on the

gun air line to control air pressure to the gun. See Fig. 2.

D If your regulated air source does not have a filter,

install an air filter (G) on the air line to ensure a dry, clean air supply to the gun. Dirt and moisture can ruin the appearance of your finished workpiece. See Fig. 2.

D Use a 5/16 inch (7.9 mm) I.D. air hose to minimize

excessive pressure drop in the hose. See the Pressure Drop Chart on page 11 for the expected pressure drops through a 25 ft. (7.625 m) hose.

A. Connect the air hose (D) to the 1/4 npsm gun air

inlet (C).

2. Connect the Fluid Hose

NOTE:

D Before connecting the fluid line, blow it out with air

and flush it with solvent. Use solvent which is compatible with the fluid to be sprayed.

D Install a fluid regulator (L) on the fluid line to control

fluid pressure to the gun. See Fig. 4.

D Filter the fluid line of coarse particles and sediment

to avoid clogging the fluid nozzle and causing finishing defects.

A. Connect the fluid hose (J) to the gun fluid inlet (B)

3/8–18 npsm [R 3/8–19] compound thread.

Fig. 1

B. Connect the other end of the air hose (D) to a reg-

ulated air supply line (H).

NOTE: Fig. 2 shows the filter (G) air regulator (F), and air shut-off valve (E) on the air supply line.

7033A

7034A

Fig. 3

B. Connect the other end of the fluid hose (J) to a

regulated fluid supply line (K).

NOTE: Fig. 4 shows the fluid regulator (L) and fluid shut-off valve (M) on the fluid supply line (K).

Fig. 2

8 308741

01990

Fig. 4

7016A

Setup

3. Flush the Spray Gun.

Before putting any paint through the spray gun, flush the gun out with a solvent that is compatible with the fluid to be sprayed, using the lowest possible fluid pressure and a grounded metal container.

Fig. 5

WARNING

PRESSURIZED EQUIPMENT HAZARD

To reduce the risk of a serious injury whenever you are instructed to relieve pressure, follow the Pres- sure Relief Procedure on page 12.

7035A

6. Adjust the Spray Pattern

WARNING

COMPONENT RUPTURE HAZARD Do not exceed the 100 psi (0.7 MPa, 7 bar) maximum fluid and air pres-

sure of this gun. Higher pressures can cause parts

to rupture and result in serious injury.

Follow these steps to establish the correct fluid flow and air flow:

A. Turn the fluid adjustment knob (21) counterclock-

wise until no restriction of the trigger movement is felt, then turn out another half turn. When the knob is turned far enough, the trigger should be able to touch the gun handle when the gun is triggered.

WARNING

PRESSURIZED EQUIPMENT HAZARD

To avoid injury, never open the fluid adjustment knob (21) beyond the one half turn indicated in

Adjust the Spray Pattern.

4. Relieve the Pressure.

5. Position the Air Cap

Rotate the air cap as needed to achieve the desired spray pattern direction. To create a round pattern, turn the pattern air off by turning the pattern adjustment knob (13a) fully clockwise. Refer to Fig. 12, page 11.

Vertical Pattern

Horizontal Pattern

Fig. 6

02020

open

7036

Fig. 7

308741 9

Setup

6. Adjust the Spray Pattern (continued)

B. Adjust the fluid flow using the fluid pressure

regulator (L) installed in the gun fluid line. Typical industrial flow rates will vary with regulator pressures from 5 to 30 psi (34 to 210 kPa, 0.3 to

2.1 bar).

Fig. 8

C. Hold the gun parallel to the floor and adjust the fluid

pressure to yield a 1 to 6 inch (25.4 to 152.4 mm) straight fluid stream before the stream falls off.

7019A

NOTE: A larger fluid nozzle at a reduced fluid pressure will maintain the same flow rate, but slow down the fluid stream (velocity). When air is applied, this allows the air to act on the fluid longer and improve the atomization.

D. If further fluid flow restriction is needed at the gun,

turn the fluid adjustment knob (21) clockwise to reduce the volume of fluid output by limiting the needle travel.

7039

Fig. 11

(25.4–152.4 mm)

straight fluid stream

Fig. 9

Fluid Velocity of Fluid Nozzles at the Same Flow Rate

0.042 (1.067)

0.055 (1.397)

Orifice Size in inches (mm)

0.070 (1.778)

0.086 (2.184)

Fig. 10

1–6 in.

0.110 (2.794)

7037

7038A

WARNING

PRESSURIZED EQUIPMENT HAZARD

To avoid injury, never open the fluid adjustment knob (21) beyond the one half turn indicated in

Adjust the Spray Pattern, page 9.

CAUTION

Restricting the trigger and fluid needle travel by continuously spraying with the fluid adjustment knob closed (turned clockwise), will cause accelerated abrasive wear on the fluid needle and wear on the trigger/air valve shaft interface.

For the best results, use the gun fluid regulator to adjust the fluid flow or use a different size needle/ nozzle/air cap combination.

10 308741

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