Graco 246830 User manual

309577K
EN
Repair - Parts
Displacement Pump
FOR USE WITH REACTOR®AIR AND ELECTRIC PROPORTIONERS
3500 psi (24.5 MPa, 245 bar) Maximum Working Pressure
Component A (ISO) Pumps with
wet-cup flush feature
Part No. 246830, Series A
0.396 in.2(2.55 cm2)
Part No. 246831, Series B
0.552 in.2(3.56 cm2)
Part No. 246832, Series A
0.743 in.2(4.79 cm2)
Part No. 262647, Series A
0.552 in.2(3.56 cm2)
Component B (Resin) Pumps
Part No. 245970, Series A
0.396 in.2(2.55 cm2)
Part No. 245971, Series B
0.552 in.2(3.56 cm2)
Part No. 245972, Series A
0.743 in.2(4.79 cm2)
Part No. 262648, Series A
0.552 in.2(3.56 cm2)
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
TI2663
TI3733

Manual Conventions
2309577K
Contents
Manual Conventions . . . . . . . . . . . . . . . . . . . . . . . . 2
Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Pressure Relief Procedure . . . . . . . . . . . . . . . . . . . 5
Tools Needed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Repair Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Clean and Inspect Parts . . . . . . . . . . . . . . . . . . . . . 6
Supply Wet-cups with Throat Seal Liquid . . . . . . . 7
Cutaway Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 28
Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . 28
Manual Conventions
Warning
Caution
Note
Related Manuals
The following manuals are available for 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 or
312065
Reactor Electric Proportioner,
Operation Manual (English)
309574 or
312066
Reactor Electric Proportioner,
Repair-Parts Manual (English)
309911 Reactor Pump Wet-Cup Flush
Kits

Warning
309577K 3
WARNING
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 5, when you stop spraying and before cleaning, check-
ing, 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
4309577K
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
309577K 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.
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.
TI2421A
TI2481a
SA SB

Tools Needed
6309577K
Tools Needed
• Vise with flat jaws
• 12 in. adjustable, open end wrench (2)
• Non-sparking hammer, 20 oz maximum
• Small screwdriver
• Throat Seal Liquid (TSL), Graco Part No. 206995
• ISO Pump Oil, Graco Part No. 217374
• Pick or long small screwdriver
• Snap-ring pliers
• 1/2 in. (13 mm) diameter plastic rod
• 7/8 in. deep-well socket (246830 and 245970 only)
• 1/2 in. (13 mm) x 2.5 in. (64 mm) bolt with washers
and nut
• Channel locks
• Dropcloth and rags
Repair Kits
A repair kit is available for your pump. Kit parts are
marked with an asterisk, for example (3*). See page 23.
Kit must be purchased separately. For best results, use
all parts in the kit.
Clean and Inspect
Parts
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.

Supply Wet-cups with Throat Seal Liquid
309577K 7
Supply Wet-cups with
Throat Seal Liquid
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
wet-cup during operation. Turn main power OFF
before filling wet cup.
1. Component A (ISO) Pump: Keep reservoir (R)
3/4 filled with Graco Throat Seal Liquid (TSL),
Part No. 206995. Wet-cup piston (28) circulates
TSL through packing nut/wet-cup (19), to carry
away isocyanate film on displacement rod.
After some time TSL will thicken and darken,
and must be replaced. Thick, dirty TSL will not
pump through lines and will harden in wet-cup.
Check condition of TSL every week, minimum,
and change when needed.
R
TI3765a-2
2. Component B (Resin) Pump: Check felt wash-
ers (21) in packing nut/wet-cup (19) daily. Keep
saturated with Graco Throat Seal Liquid (TSL),
Part No. 206995, to prevent material from hard-
ening on displacement rod. Replace felt wash-
ers when worn or contaminated with hardened
material.
19
TI3765a-1

Cutaway Views
8309577K
Cutaway Views
Component A (ISO) Pump
1
19†
†*22
†25
24*†
*17
*20
2
*16
*15
5
3*
4
14*
7
13*
3*
11*
9
10*
‡*8
12
TI3734b
26*†
27*†
†28
246830
246832
1
19†
†*22
†25
24*†
*17
*20
2
*16
*15
5
3*
4
13*
7
18*
3*
11*
9
10*
‡*8
12
TI3734C
26*†
27*†
†28
14*
246831
262647

Cutaway Views
309577K 9
Component B (Resin) Pump
1
19†
*22
*21
*17
*20
2
*16
*15
5
3*
4
14
*
7
13*
3*
11
*
9
10
*
‡*8
12
TI2668b
245970
245972
1
19†
*22
*21
*17
*20
2
*16
*15
5
3*
4
14*
7
13*
3*
11*
9
10*
‡*8
12
TI2668C
18*
245971
262648

Disassembly
10 309577K
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. Press . Motor will run until pumps are at
bottom of strokes, then shut off.
5. Turn main power OFF . Disconnect
power supply.
Steps 6-8 apply to pump A. See FIG. 1. To dis-
connect pump B, go to steps 9 and 10. Use
dropcloth or rags to protect Reactor and sur-
rounding area from spills.
6. Disconnect fluid inlet (C) and outlet (D). Also
disconnect steel outlet tube from heater inlet.
7. Disconnect tubes (T). Remove tube fittings (U)
from wet-cup.
AB
8. Loosen star-shaped locknut (G) by hitting firmly
with a non-sparking hammer. Unscrew pump far
enough to expose retaining pin under plastic fin-
ger guard. Push retaining spring up. Push pin
out. Continue unscrewing pump.
Steps 9 and 10 apply to pump B. See FIG. 2.
Use dropcloth or rags to protect Reactor and
surrounding area from spills.
9. Disconnect fluid inlet (C) and outlet (D). Also
disconnect steel outlet tube from heater inlet.
10. Push retaining spring (E) up. Push pin (F) out.
Loosen star-shaped locknut (G) by hitting firmly
with a non-sparking hammer. Unscrew pump.