Graco 308225K User Manual

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Graco 308225K User Manual

Instructions – Parts List

BULLDOG HYDRA–CATR FIXED RATIO

Proportioning Pumps

308225K

EN

3000 psi (21 MPa, 207 bar) Maximum Working Pressure

Two or Three Displacement Pump Models in Various Mix Ratios, Pressure Ratios and Flow Volume

Available as Bare Pumps,

Wall-Mounted* or Free-Standing* Models

*Includes Mixing Manifolds, Automatic Pressure Relief Valves,

Check Valves, Pressure Gauges and Regulators

Read warnings and instructions.

For a list of models, see page 6.

Table of Contents

Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . 2

 

Model Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . 6

 

Typical Installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7, 8

 

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 9

 

Installation – Optional Fluid Heaters . . . . . . . . . . . . . . . . . . . . . . .

13

 

Installation – Optional Solvent Pump . . . . . . . . . . . . . . . . . . . . . .

15

 

Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

16

 

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

19

 

Shutdown and Care of the System . . . . . . . . . . . . . . . . . . . . . . . .

23

 

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

24

 

Service – Displacement Pump . . . . . . . . . . . . . . . . . . . . . . . . . . .

26

 

Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

28

 

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

40

 

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

43

02910A

Technical Data

45

 

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

46

 

Symbols

Warning Symbol

WARNING

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

Caution Symbol

CAUTION

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

WARNING

INJECTION HAZARD

Spray from the gun, hose leaks, or ruptured components can inject fluid into your body and cause extremely serious injury, including the need for amputation. Splashing fluid in the eyes or on the skin can also cause serious injury.

DFluid injected into the skin might look like just a cut, but it is a serious injury. Get immediate medical attention.

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

DDo not put your hand or fingers over the spray tip/nozzle.

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

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

DCheck the gun diffuser operation weekly. Refer to the gun manual.

DAlways have the trigger guard on the spray gun when spraying.

DCheck the gun diffuser operation weekly. Refer to the gun manual.

DBe sure the gun trigger safety operates before spraying.

DLock the gun trigger safety when you stop spraying.

DFollow the Pressure Relief Procedure on page 19 if the spray tip/nozzle clogs and whenever you: are instructed to relieve pressure; stop spraying; clean, check, or service the equipment; and install or clean the spray tip/nozzle.

DTighten all fluid connections before operating the equipment.

DCheck the hoses, tubes, and couplings daily. Do not mend or repair any part of the hose assembly. If the hose is damaged, replace it immediately.

MOVING PARTS HAZARD

Moving parts, such as the air motor piston can pinch or amputate fingers.

DDo not operate the equipment with the air motor plates removed.

DKeep your body and tools clear of any moving parts when starting or operating the equipment.

2308225

WARNING

FIRE, EXPLOSION, AND ELECTRIC SHOCK HAZARD

Improper grounding, poor ventilation, open flames, or sparks can cause a hazardous condition and result in fire, explosion, electric shock or other serious injury.

DGround the equipment and the object being sprayed. See Grounding on page 10.

DDo not use the heater with flammable liquids, such as those having flash points below 200_ F (93_ C).

DAll electrical wiring must be done by trained and qualified personnel and comply with all local codes and regulations.

DIf there is any static sparking while using the equipment, stop spraying immediately. Identify and correct the problem.

DProvide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid being sprayed.

DDo not smoke within the spray area.

DExtinguish all the open flames or pilot lights within the spray area.

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

DElectrically disconnect all the equipment within the spray area.

DDo not turn on or off any light switch within the spray area while operating or if fumes are present.

DDo not operate a gasoline engine within the spray area.

TOXIC FLUID HAZARD

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

DKnow the specific hazards of the fluid you are using.

DStore hazardous fluid in an approved container. Dispose of hazardous fluid according to all local, state and national guidelines.

DAlways wear protective eyewear, gloves, clothing and respirator as recommended by the fluid and solvent manufacturer.

DGraco does not manufacture or supply any of the reactive chemical components that may be used in this equipment and is not responsible for their effects. Graco assumes no responsibility for loss, damage, expense or claims for personal injury or property damage, direct or consequential, arising from the use of such chemical components.

308225 3

WARNING

EQUIPMENT MISUSE HAZARD

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

INSTRUCTIONS

DThis equipment is for professional use only.

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

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

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

DCheck equipment daily. Repair or replace worn or damaged parts immediately.

DSee the chart on page 6 for important pressure rating information. The maximum working pressure of each model is also shown on the pump identification plate. Be sure that all dispensing equipment and accessories are rated to withstand the maximum working pressure of your pump. Do not exceed the maximum working pressure of the lowest rated system component.

DNever operate the pump without the automatic pressure relief valves and drainage kits installed. These valves relieve fluid pressure through a drain port at the bottom of the valve if the displacement pump pressure exceeds the working pressure.

DDo not lift pressurized equipment.

DUse only Graco approved hoses. Do not remove hose spring guards, which help protect the hose from rupture caused by kinks or bends near the couplings.

DRoute 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).

DDo not use the hoses to pull the equipment.

DUse fluids and solvents that are compatible with the equipment wetted parts. See the Technical Data section of all the equipment manuals. Read the fluid and solvent manufacturer’s warnings.

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

4308225

Notes

head.notes

308225 5

Model Charts

Pressure and Ratio Ratings for Bulldog Pumps

WARNING

COMPONENT RUPTURE HAZARD

To reduce the risk of over-pressurizing a component, which can result in an explosion and serious injury, never operate the system at a working pressure higher than the lowest rated component in the system. All fluid side components, such as dispensing valves; regulators; and hoses, must have a working pressure equal to or greater than the pressure given in Column B for each pump model.

Column A gives the maximum pump fluid output pressure.

Column B gives the minimum working pressure required for all system components, based on the automatic relief valve settings. Components included by Graco with the models listed meet or exceed this requirement.

Models with Two Displacement Pumps

 

 

 

 

 

A

 

 

 

B

 

 

 

 

 

 

 

Maximum Pump

At Maximum

Minimum

Normal

Nominal

 

 

 

 

Flow

 

 

Model No.

 

Fluid Output

Air Pressure

Component

 

 

 

Pressure

Volume

 

 

 

 

Pressure*

 

Of:

Working Pressure

 

 

 

 

 

Ratio

@ 40 cpm

Mix

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Fluid to Air)

 

 

Bare

Wall

Stand

psi

MPa, bar

psi

MPa, bar

psi

MPA, bar

gpm

lpm

Ratio

 

 

 

 

 

 

 

 

 

 

 

 

 

1:1

231897

231836

231865

3000

21, 207

86

0.6, 6

3000

21, 207

34.7

1.8

6.8

Models with Three Displacement Pumps

 

 

 

 

 

A

 

 

 

B

 

 

 

 

 

 

 

Maximum Pump

At Maximum

Minimum

Normal

Nominal

 

 

 

 

Flow

 

 

Model No.

 

Fluid Output

Air Pressure

Component

Pressure

 

 

 

Volume

 

 

 

 

Pressure*

 

Of

Working Pressure

Ratio

Mix

 

 

 

 

@ 40 cpm

 

 

 

 

 

 

 

 

 

(Fluid to Air)

 

 

Ratio

Bare

Wall

Stand

psi

MPA, bar

psi

MPa, bar

psi

MPA, bar

 

gpm

lpm

2:1

231908

231847

231876

2320

16, 160

100

0.7, 7

2900

20, 200

23.2

2.7

10.1

 

 

 

 

 

 

 

 

 

 

 

 

 

2:1

231910

231849

231878

3000

21, 207

86

0.6, 6

3600

25, 248

34.7

1.8

6.7

 

 

 

 

 

 

 

 

 

 

 

 

 

3:1

231912

231851

231880

2610

18, 180

100

0.7, 7

2900

20, 200

26.1

2.4

8.9

 

 

 

 

 

 

 

 

 

 

 

 

 

4:1

231915

231854

231883

2780

19, 192

100

0.7, 7

2900

20, 200

27.8

2.2

8.4

 

 

 

 

 

 

 

 

 

 

 

 

 

6308225

Typical Installation

About the Typical Installations

These pumps are designed to be part of a Hydra-Cat dispensing system that will proportion, mix, and dispense two-component fluids. The typical installations shown below and on page 8 are only guidelines to setting up a complete proportioning system. For clarity, various components are shown in the correct order but may not be shown in the exact position of the installed system. For assistance in designing your system, contact your nearest Graco representative.

NOTE: When pressure feeding the proportioning pump, mount fluid pressure gauges (J) at the proportioning pump inlets to monitor proper adjustment of the feed pump pressures. Never exceed 25% of the Hydra-Cat pump outbound fluid pressure on the feed supply.

Light Viscosity System

Two Displacement Pumps,

5:1 Ratio Feed Pumps

KEY

A

Bleed-type master

H

Proportioning pump

P

Fluid drain valve

 

air valve

J

Fluid pressure gauge

Q

Fluid shutoff valve

B

Air filter

K

Check valve

R

Static mixer

C

Air lubricator

L

Automatic pressure relief

S

Dispense valve

D

Pump runaway valve

 

valve

T

Fluid regulator

E

Pump air regulator

M

Fluid filter

U

Solvent pump

F

Feed pump

N

Mixer manifold

V

Fluid strainer

G

Ground wire

 

 

 

 

1See note above

2Connect to drain bottle.

See Fig. 5, page 11

*Included with wall or stand models

B A

F G

H E* A*

K*

C

D

2

 

 

 

HARD

 

 

 

 

RES

 

E

HARDENER

RESIN

J*

1

A

 

 

 

 

V*

 

 

 

 

 

 

 

 

Q*

 

Fig. 1

L*

M S

N*

P*

HARD R

RES

Q

 

Q*

T

U

K

 

 

M

02911

308225 7

Typical Installation

About the Typical Installations

These pumps are designed to be part of a Hydra-Cat dispensing system that will proportion, mix, and dispense two-component fluids. The typical installation iss shown below and on page 7 are only a guidelines to setting up a complete proportioning system. For clarity, various components are shown in the correct order but may not be shown in the exact position of the installed system. For assistance in designing your system, contact your nearest Graco representative.

NOTE: When pressure feeding the proportioning pump, mount fluid pressure gauges (J) at the proportioning pump inlets to monitor proper adjustment of the feed pump pressures. Never exceed 25% of the Hydra-Cat pump outbound fluid pressure on the feed supply.

Heavy Viscosity Heated System

Three Displacement Pumps,

10:1 Ratio Feed Pumps

KEY

A

Bleed-type master air valve

J

Fluid pressure gauge

R

Static mixer

B

Air filter

K

Check valve

S

Dispense valve

C

Air lubricator

L

Automatic pressure

T

Fluid regulator

D

Pump runaway valve

 

relief valve

U

Solvent pump

E

Pump air regulator

M

Fluid filter

V

Fluid strainer

F

Feed pump

N

Mixer manifold

W

Fluid heater

G

Ground wire

P

Fluid drain valve

X

Supply manifold

H

Proportioning pump

Q

Fluid shutoff valve

 

 

1See note above

2Connect to drain bottle. See Fig. 5, page 11

*Included with wall or stand models

B A

 

 

F G

H E* A*

J* K* L* W M

 

 

S

C

 

N**

 

P**

 

 

D

 

R

 

 

 

 

2

 

 

 

 

Q

 

 

Q**

T

 

 

K

U

 

 

 

M

 

 

2

 

E

X*

 

 

A

 

 

J*

1

 

 

 

 

V*

 

 

 

Q*

 

 

Fig. 2

02912

 

8308225

Installation

Bare Pumps

Bare pumps are available for those installations which require a highly customized system. For a safe and efficient system, Graco recommends that the air and fluid components supplied with the Wall Mount and Cart Mount models also be used in customized systems. Refer to the Parts Drawings starting on page 28 for part numbers. In addition, the accessories shown in the Typical Installation drawings and discussed in the following pages of this manual should be used.

Be sure all accessories are sized properly for the air and fluid requirements of your system.

Read all instructions in the Installation section for further details.

NOTES:

1.Models with three displacement pumps always use the two outer displacement pumps to supply the resin and the middle displacement pump to supply the hardener.

2.Label all pumps, hoses, fluid regulators, etc. to indicate whether they are for the resin side or hardener side of the system.

Mounting the Pump

Mount the pump to suit your installation. The bare pump can be mounted on a wall bracket or on a cart. See Dimensions on page 43. The Bulldog pump and accessories weigh approximately 115 lb (52 kg). The pump stand and accessories weigh 55 lb (25 kg).

For a wall mount, be sure the bracket and wall are strong enough to support the pump, accessories, plumbing and stress caused by pump operation.

Locate the bracket about 5 ft (1.5 m) above the floor.

308225 9

Installation

Grounding

WARNING

FIRE AND EXPLOSION HAZARD

Improper grounding could cause static sparking, which could cause a fire or explosion. To reduce the risk of property damage or serious injury, follow the grounding instructions below.

The following grounding instructions are minimum requirements for a system. Your system may include other equipment or objects which must be grounded. Check your local electrical code for detailed grounding instructions for your area and type of equipment. Your system must be connected to a true earth ground.

1.Pump:

a.Loosen the grounding lug locknut (BB) and washer (AA).

b.Insert one end of a 14 ga. (1.5 mm@) minimum ground wire (G) into the slot in lug (CC) and tighten the locknut securely. See Fig. 3.

c.Connect the other end of the ground wire to a true earth ground. Order part number 237569 grounding clamp wire.

G

CC

2.Air hoses: use only grounded hoses with a maximum of 500 feet (150 m) combined hose length to ensure grounding continuity.

3.Fluid hoses: use only grounded fluid hoses.

4.Air compressor: follow manufacturer’s recommendations.

5.Spray gun or dispensing valve: grounding is obtained through connection to a properly grounded fluid hose and pump.

6.Fluid supply container: according to local code.

7.Object being sprayed: according to your local code.

8.All solvent pails used when flushing, according to local code. Use only metal pails, which are conductive, placed on a grounded surface. Do not place the pail on a nonconductive surface, such as paper or cardboard, which interrupts the grounding continuity.

9.To maintain grounding continuity when flushing or relieving pressure, always hold a metal part of the dispensing unit firmly to the side of a grounded metal pail, then trigger the dispensing unit.

BB AA

Fig. 3

10 308225

Installation

Air Control Accessories

Install the accessories in the order shown in Fig. 4. Mount only the air regulator (E) and a master air valve

(A) at the pump. Mount all other accessories on separate wall brackets to reduce stress on the pump inlet. Note that one air filter (B) can serve multiple pumps by using an air manifold downstream from the air filter.

WARNING

INJECTION HAZARD

Bleed-type master air valves (A) are required in the system in the positions shown in the Typical Installation drawings. These valves are used during system pressure relief to relieve air trapped in the air line. Trapped air can cause the pump to cycle unexpectedly and result in serious injury from moving parts, fluid injection, or fluid splashing.

B A

A

E

G

C

D

Fig. 4

02887

 

1.Install a bleed-type master air valve (A) in the pump air inlet.

2.Install an air regulator and gauge (E) to control pump outlet pressure.

3.Install a pump runaway valve (D) for each feed pump to automatically shut off the air to the pump if the pump accelerates beyond the pre-adjusted setting. A pump which runs too fast can be seriously damaged.

4.Install an air line lubricator (C) for automatic air motor lubrication.

5.Install an air filter (B) to remove harmful dirt and moisture from the compressed air supply.

Automatic Pressure Relief Valves

WARNING

COMPONENT RUPTURE HAZARD

To reduce the risk of component rupture, which could cause serious injury and

property damage, the appropriate automatic pressure relief valve (18) is required for each fluid on a plural component pump.

These valves automatically relieve fluid pressure if the pump output pressure exceeds the valve’s preset pressure. Over-pressurization may occur if there is a fluid line clog upstream from the valve or if any other condition exists that causes one of the pumps to cavitate and direct all fluid pressure to the other pump(s).

See the Model Chart on page 6 to determine the preset pressure in your system.

NOTE: Item 38, Drainage Bottle Kit, includes items 38a–38h

18

38a

38b

38c

38f

38g

38h

Fig. 5

02888A

 

 

308225 11

Installation

Automatic Pressure Relief Valves (continued)

Two drainage bottle kits (38) are included with wall models (unassembled) and stand mount models (assembled) to catch the drainage if the automatic pressure relief valves (18) open.

For the wall mount models, assemble the kit as shown in Fig. 5, page 11, and mount it securely to a wall or bracket. Use the tie wrap, supplied, to hold the hoses out of the way if necessary.

WARNING

INJECTION HAZARD

Fluid emitted from the automatic pressure drain valves may be at pressures over 3000 psi (21 MPa, 207 bar). To reduce the risk of serious injury from fluid injection or fluid splashing, make sure the drain bottles are securely fastened to the frame or wall so that they can handle a sudden spurt of pressurized fluid.

Connect Fluid Supply Hoses

NOTE: If you mount the pump on a wall, turn the displacement pump inlet assemblies (CC) to face forward, rather than backwards as shown in Fig. 76.

For Two Displacement Pump Models

1.Connect the resin supply hose (EE) to the 3/4 npt swivel inlet (37B) for the resin displacement pump. See Fig. 6.

2.Connect the hardener supply hose (DD) to the

3/4 npt swivel inlet (37A) for the hardener displacement pump. See Fig. 6.

For Three Displacement Pump Models

1.Connect the resin supply hose (EE) to the 3/4 npt swivel inlet (37B) for the resin displacement pumps. See Fig. 7.

2.Connect the hardener supply hose (DD) to the 3/4 npt swivel inlet (37) for the center (hardener) displacement pump. See Fig. 7.

Additional System Components

Install and connect the feed pumps, solvent pump, heaters, etc. Refer to the Typical Installations page 7 and Accessories on pages 40 and 41 for parts information.

Use a dry air kit or a nitrogen regulator kit to protect the fluid in the supply containers from moisture that can crystallize the fluid and cause the ball checks to malfunction. See Accessories on page 41.

DD

EE

37B

HARD

RES

37A

CC

02889

Fig. 6

37B

RES

HARD

RES

EE

 

 

 

DD

37A

02890

Fig. 7

12 308225

Installation – Optional Fluid Heaters

All Models

NOTE: For systems requiring one heater for each fluid, see page 40 to order the heaters and required plumbing (items 201 to 205).

201a

 

1. Mount a heater to each side of the mounting

201b

 

 

bracket using the three screws (201a) and lock-

201

 

 

washers (201b) supplied with each heater. See

 

202

 

Fig. 8.

 

 

 

 

204

 

 

2. Connect a swivel union (202) to the outlet of each

 

 

heater. See Fig. 8.

OUT

 

 

 

 

3. Connect a swivel union (203) to the inlet of each

IN

 

heater. See Fig. 8.

 

 

For Two Displacement Pump Models

2031. Disconnect the existing hardener hose (10B) from the inlet of the mixer manifold (23). See Fig. 8.

10

Connect the free end of the hose to the swivel

(203) at the hardener heater inlet. See Fig. 9.

 

Fig. 8

02913A

 

WARNING

INJECTION HAZARD

To reduce the risk of serious injury, follow the Pressure Relief Procedure on page 19 before installing the heaters.

RES

204A

202A

2.Install a new fluid hose (204B) between the hardener heater outlet (202B) and the hardener mixer manifold. See Fig. 8 and 9.

3.Repeat Steps 1 and 2 for the resin pump (the “A” side).

See Three Displacement Pump Models on next page.

23

HARD

204B

 

202B

RES

 

OUT

 

203A

RES

HARD

 

 

 

IN

HARD

 

RES

HARD

OUT

203B

IN

10A 10B

Fig. 9

02893

308225 13

Installation – Optional Fluid Heaters

205A

FA

202A

RES

 

HEATER

 

OUT

 

IN

 

23

 

 

 

204B

RES

HARD

FB

 

RES

HARD

 

17A 17B

HARD

202B

 

HEATER

 

OUT

 

RES

RES HARD

IN

 

 

203A

203B

Fig. 10

02894

 

For Three Displacement Pump Models

16A

NOTE: You must provide two hoses (FA, FB in Fig.10)

17A

and fittings to run from the heater outlets to the mixer

17B

16B

manifold inlets.

 

NOTE: To accommodate two resin fluid hoses, the mixer manifold (23) must be disconnected from the bracket and mounted remotely.

1. Loosen the swivel of the unions (17A, 17B) to

RES

HARD

remove the elbow (16A, 16B) on each side of the

 

 

mixer manifold (23). Turn the unions (17A, 17B) so

23

 

the outlet faces up. See Fig. 10 and 11.

 

 

 

2. Connect a new hardener fluid hose (204B)

Fig. 11

02892A

 

between the union (17B) and the swivel (203B) at

 

 

 

the heater inlet. See Fig. 10.

 

 

3.Install another hardener fluid hose (FB) between the heater outlet elbow (202B) and the hardener side of the mixer manifold (23). See Fig. 10.

4.Repeat Steps 1 to 3 for the resin side of the system (the “A” side).

14 308225

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