Graco 24V671 User manual

3A6845A
EN
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.
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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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6
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(
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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
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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
L
H
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
5
133
104
128
112
122
114
2
4
4
4
4
4
4
7
7
7
1
1
3
6
Lubricate.
See Detail A.
Position the lips of the v-packings facedown.
Torque to 60 ft-lb (81 N•m).
1
2
3
4
See Detail B.
Position the lips of the v-packings face-up.
Apply lubricant.
5
6
7

Parts
10 3A6845A
Parts
Pump Lower
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