Graco 245970 Use and care manual

Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441
Copyright 2003, Graco Inc. is registered to I.S. EN ISO 9001
309577A
Repair - Parts
Displacement
Pump
FOR USE WITH REACTOR™ELECTRIC
PROPORTIONERS
3500 psi (24.5 MPa, 245 bar) Maximum Working Pressure
Part No. 245970, Series A
21 cc, used on Model E-20 and E-XP1
Part No. 245971, Series A
41 cc, used on Model E-XP2
Part No. 245972, Series A
55 cc, used on Model E-30
TI2663A

Manual Conventions
2309577A
Contents
Manual Conventions . . . . . . . . . . . . . . . . . . . . . . . . 2
Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pressure Relief Procedure . . . . . . . . . . . . . . . . . . . 5
Tools Needed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Repair Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Clean and Inspect Parts . . . . . . . . . . . . . . . . . . . . . 6
Cutaway View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 18
Manual Conventions
Warning
Caution
Note
Related Manuals
The following manuals are shipped with the Reactor™.
Refer to these manuals for detailed equipment informa-
tion.
WARNING
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 3-4.
CAUTION
A caution alerts you to possible equipment damage or
destruction if you do not follow instructions.
A note indicates additional helpful information.
Reactor Electric Proportioner
Part No. Description
309551 Reactor Electric Proportioner,
Operation Manual (English)
309574 Reactor Electric Proportioner,
Repair-Parts Manual (English)

Warning
309577A 3
WARNING
Injection Gu n Fusio n
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 medical attention.
• 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 5, when you stop spraying and before cleaning, checking,
or servicing equipment.
• Use lowest possible pressure when flushing, priming, or troubleshooting.
• Engage spray gun 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 pres-
sure hose cannot be recoupled; replace the entire hose.
FIRE AND EXPLOSION HAZARD
Solvent and 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 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 in your Reactor manual.
• 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.

Warning
4309577A
BURN HAZARD
This equipment is used with heated fluid, which can cause equipment surfaces to become very hot. To
avoid severe burns:
•Do not touch hot fluid or equipment.
•Allow equipment to cool completely before touching it.
•Wear gloves if fluid temperature exceeds 110°F (43°C).
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.
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; and
hearing loss. This equipment includes but is not limited to:
•Protective eyewear
•Gloves, clothing, and respirator as recommended by the fluid and solvent manufacturer
•Hearing protection.
WARNING

Pressure Relief Procedure
309577A 5
Pressure Relief Procedure
WARNING
Read warnings, page 3.
1. Relieve pressure in gun and perform gun shut-
down procedure. See gun manual.
2. Close gun fluid manifold valves A and B.
TI2421A
3. Shut off feed pumps and agitator, if used.
4. Turn PRESSURE RELIEF/SPRAY valves (SA,
SB) to PRESSURE RELIEF. Route fluid to waste
containers or supply tanks. Ensure that gauges
drop to 0.
TI3171a
SA
SB

Tools Needed
6309577A
Tools Needed
•Vise with flat jaws
•12 in. adjustable, open end wrench (2)
•Non-sparking hammer, 20 oz maximum
•Small screwdriver
•ISO pump oil
•Pick or long small screwdriver
•Snap-ring pliers
•1/2 in. (13 mm) diameter plastic rod
•7/8 in. deep-well socket (245970 only)
Repair Kits
A repair kit is available for your pump. Kit parts are
marked with an asterisk, for example (3*). See page 17.
Kit must be purchased separately. For best results, use
all parts in the kit.
Clean and Inspect
Parts
Cutaway View
1. Clean and inspect all parts. Intake and piston
ball seats, sleeve, and displacement rod must
not be worn, scratched, or damaged.
2. Remove and clean sleeve when repacking
pump.
1
19*22
*21
18*
*17
*20
2
*16
*15
5
3*
4
14*
7
13*
6*
3*
11*
9
10*
*8
12
TI2668A

Disassembly
309577A 7
Disassembly
WARNING
Pump rod and connecting rod move during operation.
Moving parts can cause serious injury such as pinch-
ing or amputation. Keep hands and fingers away from
connecting rod during operation.
1. Shut off , , and heat zones.
2. Flush pumps. See Reactor manual.
3. Relieve pressure, page 5.
4. To disconnect pump A:
a. Turn PRESSURE RELIEF/SPRAY
valves (SA, SB) to PRESSURE RELIEF.
b. Press . Motor will run until compo-
nent A pump is at bottom of its stroke,
then shut off.
A
B
TI3171a
SA
SB
c. Shut main power OFF .
d. Disconnect fluid inlet (C) and outlet (D).
See FIG. 1.
e. Push retaining spring (E) up. Push pin
(F) out. Loosen locknut (G) by hitting
firmly with a non-sparking hammer.
Unscrew pump. See FIG. 1.
To disconnect pump B, see page 8. To continue
repairing pump A, see page 9.
FIG. 1. Disconnect Pump (Pump A Shown)
TI2602A
C
F
G
D
E

Disassembly
8309577A
5. To disconnect pump B:
a. Turn PRESSURE RELIEF/SPRAY
valves (SA, SB) to PRESSURE RELIEF.
b. Tu r n m a i n p o w e r O N .
TI3171a
SA
SB
c. Enter jog mode (see operation manual).
Run motor until component B pump is at
bottom of its stroke. Press pump
to stop.
d. Shut main power OFF .
e. Disconnect fluid inlet (C) and outlet (D).
See FIG. 1.
f. Push retaining spring (E) up. Push pin
(F) out. Loosen locknut (G) by hitting
firmly with a non-sparking hammer.
Unscrew pump. See FIG. 1.

Disassembly
309577A 9
6. Unscrew packing nut (19). Remove retaining
ring (22) and felt washers (21).
7. Loosen intake valve housing (5) with non-spark-
ing hammer, then unscrew. Remove o-ring (15).
TI2662A
19
22
21
TI2664A
15
5
8. Disassemble intake valve. Be sure to remove
o-ring (10).
Spring (8) is on Model 245972 only.
9. Tap rod (1) with non-sparking hammer to drive it
out of cylinder (2).
Sleeve (4) may come out with rod.
TI2665A
5
11
9
10
8
12
TI2672A
1
2
4

Disassembly
10 309577A
10. Using screwdriver in groove (H), remove sleeve
(4) from cylinder (2), or pull it off rod. Remove
o-rings (3).
Be sure top o-ring (3) comes out.
11. Remove scraper assembly (18, 245971 and
245972 only) and bushing (17).
TI2670A
2
3
4
H
3
TI2669A
18
17
2
12. Unscrew piston (7) from rod (1). Remove piston
guide (6) and ball (16). Remove u-cup (13) and
bushing (14).
13. Insert piston end of rod (1) into cylinder (2) and
push u-cup (20) out.
TI2666A
1
16
14
13
6
7
TI2671A
1
2
20