Graco 309550ZAE User Manual

Instructions - Parts

Plural Component, Impingement Mix
Air Purge Spray Gun

For use with non-flammable foam and polyurea. For professional use only.

Not for use in explosive atmospheres.

3500 psi (24.5 MPa, 245 bar) Maximum Fluid Working Pressure

80-130 psi (0.56-0.9 MPa, 5.6-9.0 bar) Air Inlet Pressure Range

°

F (94°C) Maximum Fluid Temperature

200

Important Safety Instructions

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

309550ZAE

EN

TI2408-1A

Manual Conventions

Contents

Manual Conventions . . . . . . . . . . . . . . . . . . . . . . . . 2

List of Models/Mix Chamber Selection Guide . . . . 3

Round Pattern Guns . . . . . . . . . . . . . . . . . . . . . . 3

Flat Pattern Guns . . . . . . . . . . . . . . . . . . . . . . . . 4

Flat Pattern Guns, continued . . . . . . . . . . . . . . . 5

Flat Pattern Stud Wall Gun . . . . . . . . . . . . . . . . . 5

Spatter Pattern Gun . . . . . . . . . . . . . . . . . . . . . . 6

Wide Round Pattern Gun . . . . . . . . . . . . . . . . . . 6

Four-Hose Gun . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Non 1:1 Ratio Guns . . . . . . . . . . . . . . . . . . . . . . 6

Overall View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Isocyanate Hazard . . . . . . . . . . . . . . . . . . . . . . . . . 10

Keep A and B Components Separate . . . . . . . . . 10

Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Piston Safety Lock . . . . . . . . . . . . . . . . . . . . . . . . 10

Turning Air Cap . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Loss of Air Pressure . . . . . . . . . . . . . . . . . . . . . . . 11

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

Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Pressure Relief Procedure . . . . . . . . . . . . . . . . . . 15

Optional Configurations . . . . . . . . . . . . . . . . . . . . 16

Optional Fluid Manifold Position . . . . . . . . . . . . 16

Optional Hose Position . . . . . . . . . . . . . . . . . . . 17

Flat Spray Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Supplied Tool Kit . . . . . . . . . . . . . . . . . . . . . . . . 19

Keep Gun Clean . . . . . . . . . . . . . . . . . . . . . . . . 19

As Needed . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Daily . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Weekly to Monthly . . . . . . . . . . . . . . . . . . . . . . . 19

Flush Gun . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Clean Outside of Gun . . . . . . . . . . . . . . . . . . . . 20

Clean Air Cap . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Clean Muffler . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Clean Fluid Manifold . . . . . . . . . . . . . . . . . . . . . 20

Clean Mix Chamber Nozzle . . . . . . . . . . . . . . . . 21

Clean Passages . . . . . . . . . . . . . . . . . . . . . . . . 21

Clean Impingement Ports . . . . . . . . . . . . . . . . . 21

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Theory of Operation . . . . . . . . . . . . . . . . . . . . . . 25

Cutaway View . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . 27

Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Remove Front End . . . . . . . . . . . . . . . . . . . . . . 27

Attach Front End . . . . . . . . . . . . . . . . . . . . . . . . 28

Mix Chamber and Side Seal Cartridges . . . . . . 29

Check Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Piston . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Piston Safety Lock . . . . . . . . . . . . . . . . . . . . . . . 33

Air Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Mix Chamber Kits . . . . . . . . . . . . . . . . . . . . . . . 37

Flat Tip Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Gun Repair Kits . . . . . . . . . . . . . . . . . . . . . . . . . 38

Check Valve Filter Screen Kits . . . . . . . . . . . . . 38

Drill Bit Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Drill Bit Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Air Purge Handle Cleanout Drill Kit . . . . . . . . . . 40

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 46

Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . 46

Manual Conventions

Warning Caution

WARNING

A caution alerts you to possible equipment damage or
destruction if you do not follow instructions.

A warning alerts you to possible serious injury or
death if you do not follow instructions.

Symbols, such as fluid injection (shown), alert you to a
specific hazard and direct you to read the indicated
hazard warnings on pages 7-8.

2

Note

A note indicates additional helpful information.

CAUTION

List of Models/Mix Chamber Selection Guide

List of Models/Mix Chamber Selection Guide

Round Pattern Guns

Mix Chamber

Impingement

Gun Part

No., Series Part No.

246099, A AR2020 .020 (0.50) -000 SST 5 (127)

246100, A AR2929 .029 (0.70) -00 SST 8 (203)

248617, A AR3737 .037 (0.94) None SST 9 (227)

246101, A AR4242 .042 (1.00) -01 SST 11 (279)

246102, A AR5252 .052 (1.30) -02 SST 12 (305)

Port Size

in. (mm)

Equivalent

Size

Seal

Material

Pattern at 24 in

(61 cm) from

target

in. (mm)

246103, A AR6060 .060 (1.50) -03 SST 14 (356)

246104, A AR7070 .070 (1.75) -04 SST 15 (381)

246105, A AR8686 .086 (2.15) -05 SST 18 (457)

255201, A AR4242 .042 (1.00) -01 Polycarballoy 11 (279)

255202, A AR5252 .052 (1.30) -02 Polycarballoy 12 (305)

5.0

(18.9)

4.0

(15.1)

3.0

(11.4)

2.0

(7.6)

1.0

(3.8)

(

6

8

6

8

R

A

2

8

2

8

W

A

)

5

0

(

0

7

0

7

R

A

4

6

4

6

W

A

)

4

0

A

3

0

(

0

6

0

6

R

(

2

5

2

5

R

A

42

R

A

A

A

7

5

7

5

W

A

)

*

6

4

6

4

W

A

,

)

2

0

9*

93

3

W

A

,

1)

0

(

2

4

,

7

3

7

3

R

A

R

0

(

9

2

9

2

R

0

(

0

2

0

2

*

3

3

3

3

W

A

A

,

)

0

)

0

0

*

8

2

8

2

W

FLOW RATE in gpm (lpm)*

* To calculate flow in lb/min, multiply gpm rate by 10.

Example: 2 gpm x 10 = 20 lb/min.

0

500

(3.5, 35)

1000

(6.9, 69)

1500

(10.3, 103)

2000

(13.8, 138)

2500

(17.4, 172.4)

3000

(20.7, 207)

3500

(24.1, 241)

PRESSURE in psi (MPa, bar)

*Accessory AW (wide pattern) mix chambers are available. See page 41.

3

List of Models/Mix Chamber Selection Guide

Flat Pattern Guns

Mix Chamber Flat Tip

Impingement

Gun Part

No., Series Part No.

247101, A AF2020 .020 (0.50) -000 FT0424 8-10 (203-254) .024 (0.61)

247102, A AF2020 .020 (0.50) -000 FT0438 8-10 (203-254) .038 (0.97)

247103, A AF2020 .020 (0.50) -000 FT0624 12-14 (305-356) .024 (0.61)

247104, A AF2020 .020 (0.50) -000 FT0638 12-14 (305-356) .038 (0.97)

247107, A AF2020 .020 (0.50) -000 FT0838 16-18 (406-457) .038 (0.97)

247108, A AF2020 .020 (0.50) -000 FT0848 16-18 (406-457) .048 (1.22)

247111, A AF2929 .029 (0.70) -00 FT0424 8-10 (203-254) .024 (0.61)

247112, A AF2929 .029 (0.70) -00 FT0438 8-10 (203-254) .038 (0.97)

247113, A AF2929 .029 (0.70) -00 FT0624 12-14 (305-356) .024 (0.61)

Port Size

in. (mm)

Equivalent

Size Part No.

Pattern Size

in. (mm)

Orifice Size

in. (mm)

247114, A AF2929 .029 (0.70) -00 FT0638 12-14 (305-356) .038 (0.97)

247117, A AF2929 .029 (0.70) -00 FT0838 16-18 (406-457) .038 (0.97)

247118, A AF2929 .029 (0.70) -00 FT0848 16-18 (406-457) .048 (1.22)

247121, A AF4242 .042 (1.00) -01 FT0424 8-10 (203-254) .024 (0.61)

247122, A AF4242 .042 (1.00) -01 FT0438 8-10 (203-254) .038 (0.97)

247123, A AF4242 .042 (1.00) -01 FT0624 12-14 (305-356) .024 (0.61)

247124, A AF4242 .042 (1.00) -01 FT0638 12-14 (305-356) .038 (0.97)

247127, A AF4242 .042 (1.00) -01 FT0838 16-18 (406-457) .038 (0.97)

247128, A AF4242 .042 (1.00) -01 FT0848 16-18 (406-457) .048 (1.22)

247131, A AF5252 .052 (1.30) -02 FT0424 8-10 (203-254) .024 (0.61)

247132, A AF5252 .052 (1.30) -02 FT0438 8-10 (203-254) .038 (0.97)

247133, A AF5252 .052 (1.30) -02 FT0624 12-14 (305-356) .024 (0.61)

247134, A AF5252 .052 (1.30) -02 FT0638 12-14 (305-356) .038 (0.97)

247137, A AF5252 .052 (1.30) -02 FT0838 16-18 (406-457) .038 (0.97)

247138, A AF5252 .052 (1.30) -02 FT0848 16-18 (406-457) .048 (1.22)

4

Flat Pattern Guns, continued

3.0

(11.4)

2.25

(8.55)

1.5

(5.7)

0.75

(2.85)

FLOW RATE in gpm (lpm)*

* To calculate flow in lb/min, multiply gpm rate by 10.

Example: 2 gpm x 10 = 20 lb/min.

0

500

(3.5, 35)

1000

(6.9, 69)

1500

(10.3, 103)

(13.8, 138)

PRESSURE in psi (MPa, bar)

2000

2

5

F

A

F

A

F

A

F

A

2500

(17.4, 172.4)

List of Models/Mix Chamber Selection Guide

p

i

t

8

4

X

X

T

F

h

t

i

w

2

5

p

i

t

8

3

X

X

T

F

h

t

i

w

2

4

2

4

2

9

2

0

2

0

2

T

F

h

t

i

w

9

T

F

h

t

i

w

3000

(20.7, 207)

X

X

2

X

X

p

i

t

8

3

p

i

t

4

3500

(24.1, 241)

Flat Pattern Stud Wall Gun

See manual number 311071 for more information.

Mix Chamber Flat Tip Flow Data

Impingement

Gun Part

No., Series Part No.

Port Size

in. (mm)

Equivalent

Size Part No.

249525 AF4242 .042 (1.00) -01 FTM979 22 (559) .038 (0.97) 11 lb/min

249526 AF5252 .052 (1.30) -02 FTM979 22 (559) .038 (0.97) 15 lb/min

Pattern Dia. at

24 in. (610 mm)

to Target

in. (mm)

Orifice Size

in. (mm)

Approximate

Flow Rate at

1000 psi

(7.0 MPa, 70 bar)

(4.99 kg/min)

(6.81 kg.min)

5

List of Models/Mix Chamber Selection Guide

Spatter Pattern Gun

Mix Chamber

Impingement

Gun Part

No., Series Part No.

248408 A AR7070 .070 (1.75) -04

Port Size

in. (mm)

Equivalent

Size

Wide Round Pattern Gun

Mix Chamber

Impingement

Gun Part

No., Series Part No.

249529 AW3939 .039 (0.99) -01 16 (406.4) AR4242

Port Size

in. (mm)

Equivalent

Size

Pattern Diameter at

24 in. (610 mm) to

Target

in. (mm)

Equivalent Flow to

Mix Chamber Size

Reference Part No.

249530 AW4646 .046 (1.17) -02 18 (457.2) AR5252

Four-Hose Gun

Wide Round Pattern Gun with Four-Hose Recirculating Gun Manifold

Mix Chamber

Impingement

Gun Part

No., Series Part No.

249810 AW2222 .022 (0.56) NA

Port Size

in. (mm)

Equivalent

Size

Pattern Diameter at

24 in. (610 mm) to

Target

in. (mm)

8-9 (203-229)

Approximate Flow

Rate at 1000 psi

(7.0 MPa, 70 bar)

Non 1:1 Ratio Guns

Gun Part

No., Series

253888 AR2232

Mix

Chamber

4.5 lb/min

(204 kg/min)

6

Warning

WARNING

PERSONAL PROTECTIVE EQUIPMENT

You must wear proper protective equipment when operating, servicing, or when in the operating area of
the equipment to help protect you from serious injury, including eye injury, inhalation of toxic fumes,
burns, and hearing loss. This equipment includes but is not limited to:

• Protective eyewear

• Clothing and respirator as recommended by the fluid and solvent manufacturer

•Gloves

• Hearing protection.

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 Material Safety Data Sheet (MSDS) 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.

SKIN INJECTION HAZARD

High-pressure fluid from gun, hose leaks, or ruptured components will pierce skin. This may look like just
a cut, but it is a serious injury that can result in amputation. Get immediate surgical treatment.

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

• Do not put your hand or fingers over the gun fluid nozzle.

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

• Do not “blow back” fluid; this is not an air spray system.

•Follow Pressure Relief Procedure, page 15, when you stop spraying and before cleaning, check-
ing, or servicing equipment.

• Use lowest possible pressure when flushing, priming, or troubleshooting.

• Engage piston safety lock when not spraying.

• Tighten all fluid connections before operating the equipment.

• Check hoses, tubes, and couplings daily. Replace worn or damaged parts immediately. High pres­sure hose cannot be recoupled; replace the entire hose.

BURN HAZARD

Equipment surfaces and fluid that’s heated can become very hot during operation. To avoid severe
burns, do not touch hot fluid or equipment. Wait until equipment/fluid has cooled completely.

7

Warning

WARNING

FIRE AND EXPLOSION HAZARD

Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help prevent
fire and explosion:

• Use equipment only in well ventilated area.

• Eliminate all ignition sources, such as pilot lights, cigarettes, portable electric lamps, and plastic drop
cloths (potential static arc).

• Do not plug or unplug power cords or turn lights on or off when flammable fumes are present.

• Keep the work area free of debris, including solvent, rags, and gasoline.

• Ground equipment and conductive objects. See Grounding, page 10.

• Hold gun firmly to side of grounded pail when triggering into pail.

• Use only grounded hoses.

• If there is static sparking or you feel a shock, stop operation immediately. Do not use equipment
until you identify and correct the problem.

EQUIPMENT MISUSE HAZARD

Misuse can cause serious injury or death.

• For professional use only.

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

• Read manuals, warnings, tags, and labels before operating equipment. Follow instructions.

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

• Do not alter or modify equipment. Use only Graco parts and accessories.

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

• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data in all
equipment manuals. Read fluid and solvent manufacturer’s warnings.

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

• Do not use hoses to pull equipment.

• Comply with all applicable safety regulations.

PRESSURIZED ALUMINUM PARTS HAZARD

Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or fluids
containing such solvents in pressurized aluminum equipment. Such use can cause serious chemical
reaction and equipment rupture, and result in death, serious injury, and property damage.

8

Overall View

Overall View

KL

FG

R

U

D

N

V

C

P

B

M

A

T

S

H

W

E

J

TI2408A

Key:

A A Side Fluid Valve (ISO)
B B Side Fluid Valve (RESIN)
CAir Cap
D Air Line Quick Coupler
E Muffler
F Fluid Housing
G Grease Fitting (under cap)
H Handle
J Optional Air Inlet
K Cleanoff Air Valve
L Piston Safety Lock
M Gun Fluid Manifold
N Mix Chamber Nozzle
P Optional Fluid Inlets (A Side Shown)
R Lock Ring
S Fluid Inlet Swivels (A Side Shown)
T Trigger
U Front Retaining Ring
V Gun Air Whip Hose
W Air Valve

9

Isocyanate Hazard

Isocyanate Hazard

Spraying materials containing isocyanates creates
potentially harmful mists, vapors, and atomized par­ticulates.

Read material manufacturer’s warnings and material
MSDS to know specific hazards and precautions
related to isocyanates.

Prevent inhalation of isocyanate mists, vapors, and
atomized particulates by providing sufficient ventila­tion in the work area. If sufficient ventilation is not
available, a supplied-air respirator is required for
everyone in the work area.

To prevent contact with isocyanates, appropriate per­sonal protective equipment, including chemically
impermeable gloves, boots, aprons, and goggles, is
also required for everyone in the work area.

Piston Safety Lock

Engage piston safety lock whenever you stop spray­ing, to avoid accidental triggering.

WARNING

Read warnings, page 7.

To engage piston safety lock: push knob in and turn
clockwise. If engaged, gun will not actuate.

Engaged

TI2409A

To disengage piston safety lock: push knob in and
turn counterclockwise until it pops out. There will be a
gap between knob and gun body.

Keep A and B Components Separate

CAUTION

To prevent cross-contamination of the gun’s wetted
parts, do not interchange A component (isocyanate)
and B component (resin) parts. The gun is shipped
with the A side on the left. The fluid manifold, fluid
housing, side seal cartridge, check valve cartridge,
and mix chamber are marked on the A side.

Grounding

WARNING

Read warnings, page 8.

Disengaged

TI2410A

Check your local electrical code and proportioner man­ual for detailed grounding instructions.

Ground the spray gun through connection to a
Graco-approved grounded fluid supply hose.

10

Turning Air Cap

Turning Air Cap Loss of Air Pressure

WARNING

Read warnings, page 7.

1.

Follow Pressure Relief Procedure, page 15.

2.

Close fluid valves A and B before turning air cap

(C).

C

B

In event of loss of air pressure, gun will continue to
spray. To shut off gun, do one of the following:

• Push in piston safety lock, see page 10.

• Close fluid valves A and B.

B

TI2421A

A

TI2421A

A

11

Setup

Setup

1.

Close fluid valves A and B.

2.

Connect A (ISO) and B (RESIN) fluid hoses to fluid

manifold.

B (RESIN)

A (ISO)

TI2411A

TI2417A

To change position of fluid manifold or use
optional fluid inlets, see pages 16 and 17.

5.

Connect quick coupler (D). Turn on air. Open air

valve (W*). Air should flow from nozzle (N).

N

D

To use optional air inlet, see page 17.

6.

Disengage piston safety lock, page 10.

W*

TI2414-1A

3.

Engage piston safety lock, page 10.

4.

Connect gun air whip hose (V) and air valve (W*)

to main air hose. Attach fluid manifold (M) to gun.

M

W*

TI2409A

V

TI2554A

7.

Trigger gun to check for full mix chamber travel.

Front of air cap (C) should be approximately flush
with front retaining ring (U).

U

C

* (W) Not included with spatter gun.

TI2410A

TI2414-1A

12

8.

Open cleanoff air valve (K) 1/4-1/2 turn and trigger

gun to check that cleanoff air is flowing. Adjust as
desired.This step does not apply with spatter spray
gun 248408.

K

13.

Setup

Test spray onto cardboard. Adjust pressure and

temperature to get desired results.

9.

Engage piston safety lock, page 10.

10.

11.

Turn on proportioner.

Open B (RESIN) fluid valve (about three half

turns). Then open A (ISO) fluid valve.

TI2409A

TI2413A

TI2645A

14.

15.

Air supply is required for gun actuation. Do not dis­connect gun air supply until fluid pressure is relieved,
page 15.

Apply layer of lubricant over front of gun and

lock ring, or use gun cover to prevent overspray
buildup and ease disassembly. See page 43 to
order lubricant and gun cover.

Gun is ready to spray.

CAUTION

12.

TI2414A

Disengage piston safety lock, page 10.

TI2410A

13

Shutdown

Shutdown

For overnight shutdown:

1.

Follow Pressure Relief Procedure, page 15.

2.

Leave air turned on and gun detriggered.

Grease gun daily to prevent 2 component curing
and keep fluid passages clean. Purge air carries
grease mist through air chamber (AC), impinge­ment ports (IP), and out mix chamber nozzle (N),
coating all surfaces. Use Graco 117773 Grease,
see page 43.

3.

Remove grease fitting cap. Using grease gun (Y),

dispense grease into fitting (G) until grease mist
sprays from mix chamber nozzle (N). Do not
over-grease; use 2 shots maximum. Do not spray
grease mist on sprayed material.

Y

G

N

W

KEY

Purge Air

Fluid

Cleanoff Air

Grease

G

19

TI3547a

AC

IP

4.

Replace grease cap.

5.

Round and Flat pattern guns only:

valve (W).

Spatter pattern gun only:

ply.

TI2415A

Turn off air

Shut down main air sup-

14

N

TI3546a