Graco 24V671 User manual

3A6845A

Instructions

Stainless Steel Pump Lower

For use with EcoQuip 2™vapor abrasive blast equipment. Only use with water or water

with additives to inhibit corrosion or mold. For professional use only.

Model 24V671

1100 psi (7.5 MPa, 75 bar) Maximum Fluid Working Pressure

Important Safety Instructions

Read all warnings and instructions in this

manual and in your EcoQuip 2 system

manual before using the equipment. Save

all instructions.

WLD

23A6845A

Contents

Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Component Identification . . . . . . . . . . . . . . . . . . . . 5

Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Fill the Wet Cup . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Pressure Relief Procedure . . . . . . . . . . . . . . . . . . 6

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Preventive Maintenance Schedule . . . . . . . . . . . 6

Tighten Threaded Connections . . . . . . . . . . . . . . 6

Wet Cup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Disassemble the Pump Lower . . . . . . . . . . . . . . . 7

Reassemble the Pump Lower . . . . . . . . . . . . . . . 7

Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Pump Lower . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Technical Specifications . . . . . . . . . . . . . . . . . . . . 13

Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 14

Related Manuals

Manual in

English Description

333397 Stainless Steel 3:1 Pump

3A6844 Stainless Steel 10:1 Pump

3A6825 EcoQuip 2™Dual Line Abrasive Blast

System

Warnings

3A6845A 3

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.

WARNING

EQUIPMENT MISUSE HAZARD

Misuse can cause death or serious injury.

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

• Do not exceed the maximum working pressure or temperature rating of the lowest rated system

component. See Technical Specifications in all equipment manuals.

• Use fluids and solvents that are compatible with equipment wetted parts. See Technical

Specifications in all equipment manuals. Read fluid and solvent manufacturer’s warnings. For

complete information about your material, request Safety Data Sheets (SDSs) from distributor or

retailer.

• Do not leave the work area while equipment is energized or under pressure.

• Turn off all equipment and follow the Pressure Relief Procedure when equipment is not in use.

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

manufacturer’s replacement parts only.

• 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.

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

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

• Do not kink or over bend hoses or use hoses to pull equipment.

• Keep children and animals away from work area.

• Comply with all applicable safety regulations.

SKIN INJECTION HAZARD

High-pressure fluid from dispensing device, 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.

• Engage trigger lock when not dispensing.

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

• Do not put your hand over the fluid outlet.

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

• Follow the Pressure Relief Procedure when you stop dispensing and before cleaning, checking, or

servicing equipment.

• Tighten all fluid connections before operating the equipment.

• Check hoses and couplings daily. Replace worn or damaged parts immediately.

Warnings

43A6845A

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.

• Equipment can start without warning. Before checking, moving, or servicing equipment, follow the

Pressure Relief Procedure and disconnect all power sources.

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. 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.

WARNING

Component Identification

3A6845A 5

Component Identification

Key:

B Enclosed Wet Cup

C Wet Cup Fill Port

D Fluid Outlet

E Fluid Inlet

F Lower Cylinder

G Outlet Housing

H Displacement Rod

S Sight Glass

FIG. 1: Component Identification

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(

Setup

63A6845A

Setup

Fill the Wet Cup

Before operating the pump, fill the wet cup port (C) half

full with Graco Throat Seal Liquid (TSL) or a compatible

water-based lubricant. Refer to Technical

Specifications, page 13, for wetted components.

Operation

Pressure Relief Procedure

Follow the Pressure Relief Procedure whenever

you see this symbol.

Always de-pressurize the system before starting any

repair procedures. Follow the Pressure Relief

Procedure in your system manual.

Maintenance

Preventive Maintenance

Schedule

The operating conditions of your system determine how

often maintenance is required. Establish a preventative

maintenance schedule by recording when and what kind

of maintenance is needed, then determine a regular

schedule for checking your system.

Tighten Threaded Connections

Before each use, check all hoses for wear or damage.

Replace as necessary. Check that all threaded

connections are tight and leak-free.

Wet Cup

Fill the wet cup half-full of Graco TSL. Verify the level of

TSL daily.

FIG. 2: Fill Wet Cup

WLD

76/

This equipment stays pressurized until pressure is

manually relieved. To help prevent serious injury from

pressurized fluid, such as skin injection, splashing

fluid and moving parts, follow the Pressure Relief

Procedure when you stop spraying and before

cleaning, checking, or servicing the equipment.

Repair

3A6845A 7

Repair

Disassemble the Pump Lower

1. Follow the Pressure Relief Procedure, page 6.

2. Remove the displacement pump from the air motor.

Refer to your pump manual.

3. Unscrew the locking ring (117) from the cylinder

(111).

4. Remove the intake seat (113) housing.

5. Remove the o-ring (112), ball stop pin (105), ball

guide (122), and ball (102) from the intake seat

(113) housing.

6. Loosen the enclosed wet cup (115) to reduce

friction between the displacement rod (107) and the

seals.

7. Push the displacement rod (107) as far down as

possible, then pull the rod out from the bottom of the

cylinder (111).

8. Secure the flats of the displacement rod (107) in a

vise.

9. Use a wrench to hold the flats of the piston (128)

and piston seat (114). Unscrew the piston seat

(114) from the rod (107).

10. Remove the ball (102), piston packings (125),

glands (124, 127), shims (129), and washer (123)

from piston seat (114).

11. Remove the enclosed wet cup (115), throat

packings (109, 119), and glands (106, 108) from the

outlet housing.

12. Inspect all parts for damage. Replace any worn or

damaged parts.

13. Inspect the polished surfaces of the displacement

rod (107) and cylinder (111). Look for scratches,

scoring, or other damage, which may cause

premature packing wear and leaks.

14. Verify that the insides of the piston seat (114) and

intake seat (113) are not chipped or nicked.

15. Clean all parts and threads with a compatible

solvent.

Reassemble the Pump Lower

1. Lubricate the throat packings (109, 119).

2. Install the throat packings into the outlet housing

(116), with the lips of the v-packings facing toward

the piston.

a. Install the spring (133).

b. Install the male gland (106).

c. Install the two nitrile v-packings (109).

d. Install one UHMWPE v-packing (119).

e. Install the female gland (108).

3. Apply thread lubricant to the threads of the enclosed

wet-cup (115).

4. Install the enclosed wet-cup (115) loosely.

5. If you removed the cylinder (111) from the outlet

housing (116):

a. Lubricate the o-ring (104).

b. Apply thread lubricant to the threads of the

cylinder (111).

c. Reinstall the cylinder (111) in the outlet housing

(116).

6. Lubricate the piston packings (125).

7. Install the piston packings (125) onto the piston seat

(114) with the lips of the v-packings facing towards

the throat packings.

a. Install two lower shims (129).

b. Install the female gland (127).

c. Install three UHMWPE v-packings (125).

d. Install the male gland (124).

8. Install the upper shim (123) onto the piston (128).

Repair

83A6845A

9. If the piston ball stop pin (110) was removed, slide

the piston ball stop pin (110) into the shorter set of

holes (L) in the piston (128).

10. Secure the ball stop pin (110) with the cotter pins

(101).

11. Install the piston ball (102) into the piston (128).

12. Screw the piston seat (114) onto the piston (128).

Torque the piston seat to 50-70 ft-lb (68-95 N•m).

13. If the piston (128) was removed from the

displacement rod (107), reassemble them back

together. Hold the flats of the displacement rod

(107) in a vise. Screw the piston assembly onto the

displacement rod. Torque the piston assembly to

50-70 ft-lb (68-95 N•m).

14. Insert the displacement rod (107) into the bottom of

the cylinder (111).

15. Push the displacement rod (107) straight up until it

protrudes from the enclosed wet cup (115).

16. Install the ball (102), guide (122), o-ring (112), and

ball stop pin (105) into the intake seat (113).

17. Place the intake seat assembly in the locking ring

(117).

18. Apply thread lubricant to the locking ring (117) and

cylinder (111) threads.

19. Screw the locking ring (117) onto the cylinder (111).

20. Reconnect the displacement pump to the air motor.

Refer to your pump manual.

FIG. 3

WLD

NOTICE

Do not scratch the rod or the inside of the cylinder.

Scratches on the rod or the inside of the cylinder will

damage seals and require frequent seal replacement.

Repair

3A6845A 9

FIG. 4: Pump Assembly

Detail A: Throat Packings

Detail B: Piston Packings

107

135 136

139

137

115

134

138

116

123

111

102

113

117

133

104

128

112

122

114

Lubricate.

See Detail A.

Position the lips of the v-packings facedown.

Torque to 60 ft-lb (81 N•m).

See Detail B.

Position the lips of the v-packings face-up.

Apply lubricant.

Parts

10 3A6845A

Parts

Pump Lower

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