Graco 312766N T1 2 1 Ratio Transfer Pump Users Manual

256200 to the manual a618d8f5-a872-4fd7-b82e-c4265a40c0b9

2015-04-02

: Graco Graco-312766N-T1-2-1-Ratio-Transfer-Pump-Users-Manual-686351 graco-312766n-t1-2-1-ratio-transfer-pump-users-manual-686351 graco pdf

Open the PDF directly: View PDF .
Page Count: 30

Instructions - Parts List

2:1 Ratio Transfer Pump

For use with polyurethane foam, polyurea, and solvent-borne and water-borne materials.

For professional use only.

Model 256200

55 Gallon (200 Liter) Drum Size

180 psi (1.2 MPa, 12 bar) Maximum Air Working Pressure

360 psi (2.5 MPa, 25 bar) Maximum Fluid Working Pressure

Important Safety Instructions

Read all warnings and instructions in

this manual. Save these instructions.

TI17170a

0359

II 1/2 G T6

ITS03ATEX11227

312766N

2312766N

Contents

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

Isocyanate Hazard . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Moisture Sensitivity of Isocyanates . . . . . . . . . . . 5

Foam Self-Ignition . . . . . . . . . . . . . . . . . . . . . . . . 6

Keep Components A and B Separate . . . . . . . . . 6

Changing Materials . . . . . . . . . . . . . . . . . . . . . . . 6

Typical Installation . . . . . . . . . . . . . . . . . . . . . . . . . 7

Typical Installation without Circulation . . . . . . . . 7

Typical Installation with Circulation . . . . . . . . . . . 8

Typical Installation for Lubrication Applications . 9

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

System Accessories . . . . . . . . . . . . . . . . . . . . . 10

Air Line Accessories . . . . . . . . . . . . . . . . . . . . . 10

Fluid Line Accessories . . . . . . . . . . . . . . . . . . . 10

Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Pressure Relief Procedure . . . . . . . . . . . . . . . . 13

Flush Pump Before Use . . . . . . . . . . . . . . . . . . 13

Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Daily Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Daily Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . 14

Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Before you start . . . . . . . . . . . . . . . . . . . . . . . . . 15

Air Motor Disassembly . . . . . . . . . . . . . . . . . . . 15

Air Motor Reassembly . . . . . . . . . . . . . . . . . . . . 16

Pump Lower Disassembly . . . . . . . . . . . . . . . . 17

Pump Lower Reassembly . . . . . . . . . . . . . . . . . 19

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Performance Chart . . . . . . . . . . . . . . . . . . . . . . 28

Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 30

Graco Information . . . . . . . . . . . . . . . . . . . . . . . . 30

Warnings

312766N 3

Warnings

The following warnings are for the setup, use, grounding, maintenance, and repair of this equip-

ment. The exclamation point symbol alerts you to a general warning and the hazard symbol refers

to procedure-specific risk. Refer back to these warnings. Additional, product-specific warnings

may be found throughout the body of this manual where applicable.

WARNING

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 MSDS’s 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.

• Always wear impervious gloves when spraying or cleaning equipment.

PERSONAL PROTECTIVE EQUIPMENT

You must wear appropriate protective equipment when operating, servicing, or when

in the operating area of the equipment to help protect you from serious injury, includ-

ing eye injury, inhalation of toxic fumes, burns, and hearing loss. This equipment

includes but is not limited to:

• Protective eyewear

• Clothing and respirator as recommended by the fluid and solvent manufacturer

•Gloves

• Hearing protection

FIRE AND EXPLOSION HAZARD

Flammable fumes, such as solvent and paint 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, portable electric

lamps, and plastic drop cloths (potential static arc).

• Keep work area free of debris, including solvent, rags and gasoline.

• Do not plug or unplug power cords, or turn power or light switches on or off when

flammable fumes are present.

• Ground all equipment in the work area. See Grounding instructions.

• Use only grounded hoses.

• Hold gun firmly to side of grounded pail when triggering into pail.

• If there is static sparking or you feel a shock, stop operation immediately. Do

not use equipment until you identify and correct the problem.

• Keep a working fire extinguisher in the work area.

Warnings

4312766N

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 low-

est 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. For complete information about your material, request MSDS forms

from distributor or retailer.

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

with genuine manufacturer’s replacement parts only.

• Do not alter or modify equipment.

• 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.

PRESSURIZED EQUIPMENT HAZARD

Fluid from the gun/dispense valve, leaks, or ruptured components can splash in the

eyes or on skin and cause serious injury.

•Follow Pressure Relief Procedure in this manual, when you stop spraying and

before cleaning, checking, or servicing equipment.

• Tighten all fluid connections before operating the equipment.

• Check hoses, tubes, and couplings daily. Replace worn or damaged parts imme-

diately.

MOVING PARTS HAZARD

Moving parts can pinch or amputate fingers and other body parts.

• Keep clear of moving parts.

• Do not operate equipment with protective guards or covers removed.

• Pressurized equipment can start without warning. Before checking, moving, or

servicing equipment, follow the Pressure Relief Procedure in this manual. Dis-

connect power or air supply.

WARNING

Isocyanate Hazard

312766N 5

Isocyanate Hazard

Moisture Sensitivity of

Isocyanates

Isocyanates (ISO) are catalysts used in two

component foam and polyurea coatings. ISO

will react with moisture (such as humidity) to

form small, hard, abrasive crystals, which

become suspended in the fluid. Eventually a

film will form on the surface and the ISO will

begin to gel, increasing in viscosity. If used,

this partially cured ISO will reduce

performance and the life of all wetted parts.

To prevent exposing ISO to moisture:

• Always use a sealed container with a desic-

cant dryer in the vent, or a nitrogen atmo-

sphere. Never store ISO in an open

container.

• Use moisture-proof hoses specifically

designed for ISO, such as those supplied

with your system.

• Never use reclaimed solvents, which may

contain moisture. Always keep solvent con-

tainers closed when not in use.

• Never use solvent on one side if it has been

contaminated from the other side.

• Always lubricate threaded parts with Part

217374 ISO pump oil or grease when reas-

sembling.

Spraying materials containing isocyanates

creates potentially harmful mists, vapors,

and atomized particulates.

Read material manufacturer’s warnings and

material MSDS to know specific hazards and

precautions related to isocyanates.

Prevent inhalation of isocyanate mists,

vapors, and atomized particulates by provid-

ing sufficient ventilation in the work area. If

sufficient ventilation is not available, a sup-

plied-air respirator is required for everyone in

the work area.

To prevent contact with isocyanates, appro-

priate personal protective equipment, includ-

ing chemically impermeable gloves, boots,

aprons, and goggles, is also required for

everyone in the work area.

The amount of film formation and rate

of crystallization varies depending on

the blend of ISO, the humidity, and the

temperature.

Isocyanate Hazard

6312766N

Foam Self-Ignition

Keep Components A and B

Separate

Changing Materials

• When changing materials, flush the equip-

ment multiple times to ensure it is thor-

oughly clean.

• Check with your material manufacturer for

chemical compatibility.

• Some materials use catalyst on the A side,

but some applications may use catalyst on

the B side.

• Epoxies often have amines on the B (cata-

lyst) side. Polyurethanes often have

amines on the B (resin) side.

Some materials may become self-igniting if

applied too thick. Read material

manufacturer’s warnings and material

MSDS.

CAUTION

To prevent cross-contamination of the

equipment’s wetted parts, never interchange

component A and component B.

Typical Installation

312766N 7

Typical Installation

Typical Installation without Circulation

Key for F

. 1.

A Reactor® Proportioner

B Heated Hose

C Fluid Temperature Sensor (FTS)

D Heated Whip Hose

EFusion

® Spray Gun

F Proportioner and Gun Air Supply Hose

G Feed Pump Air Supply Lines 3/8 in. (76 mm) ID

min.

H Waste Containers

J Fluid Supply Lines (217382)

K Feed Pumps

L Agitator

M Desiccant Dryer

N Bleed Lines/Over Pressure Relief

P Gun Fluid Manifold

FIG. 1: Typical Installation without Circulation

ti11572a

* Shown exposed for clarity. Wrap with tape during operation.

Typical Installation

8312766N

Typical Installation with Circulation

Key for F

. 2.

A Reactor Proportioner

B Heated Hose

C Fluid Temperature Sensor (FTS)

D Heated Whip Hose

E Fusion Spray Gun

F Proportioner and Gun Air Supply Hose

G Feed Pump Air Supply Lines 3/8 in. (76 mm) ID

min.

J Fluid Supply Lines (217382)

K Feed Pumps

L Agitator

M Desiccant Dryer

N Bleed Lines/Over Pressure Relief

P Gun Fluid Manifold

FIG. 2: Typical Installation with Circulation

ti11571a

* Shown exposed for clarity. Wrap with tape during operation.

Typical Installation

312766N 9

Typical Installation for Lubrication Applications

Key for F

. 3.

AA Pump Air Regulator

AB Air Line Lubricator

AC Air Line Filter

AD Bleed-Type Master Air Valve (required, for

pump)

AE Fluid Drain Valve (required)

AF Bung Adapter

AG Grounded Air Hose

AH Grounded Fluid Hose

AJ Pump Fluid Inlet

AK 1/4 npt(f) Pump Air Inlet

AL 1/2 npt(f) Pump Fluid Outlet

AM Return Port

FIG. 3: Typical Installation for Lubrication Applications

ti11573a

AA AB

Installation

10 312766N

Installation

System Accessories

Refer to F

. 3 and the Accessories on page

24.

Air Line Accessories

nstall the following accessories in the order

shown in the Typical Installation for Lubrica-

tion Applications, using adapters as neces-

sary:

An air line lubricator (AB) provides automatic

air motor lubrication.

A bleed-type master air valve (AD) is

required in your system to relieve air trapped

between it and the air motor when the valve is

closed (see the WARNING on left). Be sure

the bleed valve is easily accessible from the

pump, and is located downstream from the air

regulator.

An air line filter (AC) to remove harmful dirt

and moisture from the compressed air supply.

A second bleed-type air valve (AD) isolates

the air line accessories for servicing. Locate

upstream from all other air line accessories.

Fluid Line Accessories

A fluid drain valve (AE) is required in your

system to relieve fluid pressure in the hose

and gun (see the WARNING on left). Install the

drain valve so that it points down and the han-

dle points up when the valve is opened.

A bleed-type master air valve (AD) and a fluid

drain valve (AE) are required in your system,

to help reduce the risk of serious injury,

including splashing fluid in the eyes or on the

skin, and injury from moving parts when you

are adjusting or repairing the pump.

The bleed-type master air valve (AD) relieves

air trapped between this valve and the pump

after the pump is shut off. Trapped air can

cause the pump to cycle unexpectedly and

result in serious injury, including amputation.

Install the valve close to the pump.

The fluid drain valve (AE) helps relieve pres-

sure in the displacement pump, hose, and dis-

pensing valve when shutting off the pump.

Actuating the dispensing valve to relieve pres-

sure may not be sufficient, especially if there

is a clog in the hose or the dispensing valve.

To ensure maximum pump perfor-

mance, be sure that all accessories

used are properly sized to meet your

system’s requirements.

Setup

312766N 11

Setup

1. Apply thread sealant to the male threads of

the air needle valve (54) and the quick dis-

connect fitting (55). Install into inlet port

(AK).

2. Apply thread sealant to the male outlet fit-

ting (BC) (not supplied) and insert into the

outlet port (AL).

3. Use labels (25) provided to identify the

appropriate pump for your material.

4. Lubricate the bung adapter (16) inside

diameter and mounting threads. Ensure the

gasket is in place and screw the bung

adapter (16) securely into the bunghole of

the drum. Insert the pump through the

adapter (16) and lock it in place.

FIG. 4

FIG. 5

TI17171a

Apply thread sealant

TI17172a

Apply thread sealant

FIG. 6

FIG. 7

ti11649a

TI17173a

Setup

12 312766N

5. Install air line (3/8 in. (76 mm) ID minimum)

with quick disconnect air coupler (56).

Connect a grounded fluid hose (AH) to the

1/2 npt(f) fluid outlet (AL). In a circulating

system, remove the pipe plug (2) and con-

nect a fluid return line to the 3/8 npt(f)

return port (AM).

Grounding

1. Pump: Connect Ground Wire (Y) to ground-

ing screw (24) and tighten the screw

securely. See F

. 9. Connect the other

end of the wire to a true earth ground.

Make certain to comply with all National,

State, and Local Electrical Codes.

2. Air compressor: according to manufac-

turer’s recommendations.

3. Fluid hoses: use only grounded hoses with

a maximum of 300 ft (91 m) combined hose

length to ensure grounding continuity.

4. Dispensing valve: grounding is obtained

through connection to a properly grounded

fluid hose and pump.

5. Object being sprayed: according to local

code.

6. Fluid supply container: according to local

code.

7. All solvent pails used when flushing,

according to local code. Use only metal

pails, which are conductive. Do not place

the pail on a non–conductive surface, such

as paper or cardboard, which interrupts the

grounding continuity.

8. To maintain grounding continuity when

flushing or relieving pressure, always hold

a metal part of the spray gun/dispensing

valve firmly to the side of a grounded metal

pail, then trigger the gun/valve.

FIG. 8

To reduce the risk of static sparking,

ground the pump and all other equipment

used or located in the pumping area.

Check your local electrical code for detailed

grounding instructions for your area and

type of equipment. Ground all of this

equipment.

TI17174a

FIG. 9

TI17175a

Operation

312766N 13

Operation

Pressure Relief Procedure

1. Shut off the air to the pump.

2. Close the bleed-type master air valve (AD).

3. Hold a metal part of the dispense valve

firmly to a grounded metal pail. Trigger the

valve to relieve pressure.

4. Open all fluid drain valves in the system,

having a waste container ready to catch

drainage. Leave drain valve(s) open until

you are ready to dispense again.

5. If you suspect the nozzle or hose is

clogged or that pressure has not been fully

relieved after following the steps above,

VERY SLOWLY loosen the hose end cou-

pling to relieve pressure gradually, then

loosen completely. Clear hose or nozzle

obstruction.

Flush Pump Before Use

The pump is tested with lightweight oil, which

is left in to protect the pump parts. To prevent

contamination of the fluid you are pumping,

flush the pump with a compatible solvent

before using it. See Flushing, page 13.

Flushing

1. Follow Pressure Relief Procedure, page

13.

2. Place suction tube in grounded metal drum

containing cleaning fluid.

3. Set pump to lowest possible fluid pressure,

and start pump.

4. Hold a metal part of the dispense valve

firmly to a grounded metal pail. Trigger the

dispense valve until clean solvent dis-

penses.

5. Remove valve from hose.

6. Follow Pressure Relief Procedure, and

remove fluid filter and soak in solvent.

Replace filter cap.

7. Cycle the pump slowly for at least 5 min-

utes, then stop and disconnect the air hose.

8. Push up on the ball (5) of the intake valve

(29) to drain the lower part of the pump.

9. Turn the pump over to drain the upper part

of the pump.

Trapped air can cause the pump to cycle

unexpectedly, which could result in serious

injury from splashing or moving parts.

• Flush at the lowest pressure possi-

ble. Check connectors for leaks and

tighten as necessary.

• Flush with a fluid that is compatible

with the fluid being dispensed and

the equipment wetted parts.

Trapped air can cause the pump to cycle

unexpectedly, which could result in serious

injury from splashing or moving parts.

Operation

14 312766N

Daily Startup

1. Verify that the air needle valve (54) is

closed.

2. Connect the air line quick disconnect cou-

pler (55) to the transfer pump.

3. Turn on the main air supply.

4. Slowly open the air needle valve until the

transfer pump runs slowly.

5. Use the air needle valve to control the

pump speed.

Daily Shutdown

1. Disconnect the air line quick disconnect

coupler (55).

2. When air pressure is bled off, close the air

needle valve (54).

Corrosion Protection for Pump

Lubrication

If you are not using an accessory air line lubri-

cator, manually lubricate the motor daily. Dis-

connect the air regulator, place about 15 drops

of light machine oil in the pump air inlet, recon-

nect the regulator and turn on the air supply to

dispense oil into the motor.

Caution

Never allow the pump to run dry. A dry pump

will quickly accelerate to a high speed and

can damage the pump. If the pump acceler-

ates quickly or starts running too fast, stop it

immediately and check the fluid supply. If the

supply container is empty or air has been

pumped into the lines, refill the container;

prime the pump and the lines with fluid, or

flush and leave it filled with a compatible sol-

vent. Be sure to eliminate all air from the fluid

system.

Do not attempt to operate pump unless it is

securely mounted in a drum.

Caution

Water or moist air can cause your pump to

corrode. To help prevent corrosion, NEVER

leave the pump filled with water or air. After

normal flushing, flush the pump again with

mineral spirits solvent (also called white

spirit) or oil-based solvent, relieve pressure,

and leave the mineral spirits solvent (also

called white spirit) in the pump. Be sure to

follow to the Pressure Relief Procedure on

page 13.

Repair

312766N 15

Repair

Before you start

• Have all the necessary repair parts on

hand.

• Clean all parts with a compatible solvent.

Inspect parts for wear or damage and

replace as needed.

• Flush the pump, if possible. Stop the pump

at the bottom of its stroke. Follow Pressure

Relief Procedure on page 13 before

repairing any part of the system.

• Disconnect the air and the fluid hoses and

the grounding wire. Remove the pump from

its mounting and clamp it in a vise.

Required Tools

•Pliers

• Set of socket wrenches

• Set of adjustable wrenches

• Insert Tool 24B917

Air Motor Disassembly

1. Unscrew the cylinder cap (34) from the cyl-

inder (8). To remove the spring (7), pry gen-

tly under the coils in the direction of the

helix. Inspect the spring (7) and gasket (27)

for wear or damage; replace if necessary.

See F

. 10.

2. Unscrew the cylinder (8) from the air motor

base (13) and lift the cylinder straight off

the air piston (38). Unscrew by hand or use

a chain wrench to prevent distortion of the

cylinder’s shape. See F

. 10.

To reduce the risk of injury when servicing

the air motor, always remove cylinder cap

(34) from air cylinder (8) before removing air

cylinder from base (13).

FIG. 10

TI17176a

813

Repair

16 312766N

3. Use a pliers on the top plate of the air valve

piston (38) and a wrench on the piston rod

(35) to unscrew the air valve piston from

the piston rod. See F

. 11.

4. Remove washer (10), lower spring (9), and

gasket (27). Inspect for wear or damage

and replace as necessary. See F

. 13.

5. If any valve plate spacers (38d) are dam-

aged, replace all three to maintain the cor-

rect clearance between the valve plates

(18a,18f) and the seats. See F

. 12.

6. Disconnect the piston rod (35) from the

pump connecting rod (37) and pull the pis-

ton rod out of the air motor base (13).

Remove o-ring (6). Inspect o-ring (6) and

replace if necessary.

Air Motor Reassembly

1. Reinstall o-ring (6). Reconnect the piston

rod (35) and the pump connecting rod (37).

See F

. 13.

2. Reinstall the gasket (11), spring (9), and

washer (10). Reassemble the piston (38).

Apply thread sealant to the threads of the

piston rod (35) and carefully screw the pis-

ton (38) onto the rod. See F

. 11 and F

13.

FIG. 11

FIG. 12

ti11654a

02125

38d

38a

38f

Apply locking compound to threads.

Torque to 10-14 in-lb (1.1-1.6 N•m)

FIG. 13

When installed, there should be 0.032

in. (0.8 mm) minimum clearance

between the washer (10) and the

shoulder of the piston rod (35).

TI17177a

Repair

312766N 17

3. Reinstall the spring (7) and gasket (27) on

the cylinder cap (34) and screw the cap

onto the cylinder (8). Screw the cylinder

into the air motor base (13). See F

. 10.

Pump Lower Disassembly

1. Unscrew the air motor connecting ring (15).

Lay the pump on its side and rotate until

the ball on the pump connecting rod (37)

releases from the socket in the motor pis-

ton rod (35). Separate the motor from the

displacement pump.

2. Unscrew the intake valve housing (29) from

the piston cylinder (58). Disassemble

intake valve.

3. Unscrew the piston cylinder (58) from the

pump frame (36).

In mid-2013 the fluid section was

upgraded to prevent threaded joints

from loosening due to vibrations.

Wrench flats were also added to

improve serviceability.

Series A and B pumps can be

upgraded with repair kit 24R989.

FIG. 14

To repair the air motor, see Air Motor

Disassembly on page 15.

TI17178b

★Support the Series A and B pump frame with a

strap wrench. Series C pumps have wrench flats.

★

FIG. 15

TI17179b

Repair

18 312766N

4. Push down on the pump connecting rod

(37) until fluid piston assembly is clear of

displacement pump frame (36). Pull the

piston assembly and connecting rod out of

the frame. Remove the bearing (31) and

seal (51) from the frame.

5. Unscrew the piston body (23) from the pis-

ton valve housing on the fluid piston rod

(19).

6. Unscrew the fluid piston rod (19) from the

pump connecting rod (37). Remove the cup

packing (17) and bearing (18).

FIG. 16

Scoring or irregular surfaces on the

connecting rods (37, 19) or polished

inner wall of the pump frame (36) and

piston cylinder (58) can cause prema-

ture packing wear and leaking. To

check these parts, rub a finger over

the surface or hold the part up to the

light at an angle. Replace if neces-

sary.

TI17180b

51 31

★Support the Series A and B pump frame with a

strap wrench. Series C pumps have wrench flats.

★

FIG. 17

FIG. 18

ti11660a

21 20 3

312766D_no seal

17 18

Repair

312766N 19

Pump Lower Reassembly

1. Lubricate packing (17) and bearing (18)

with no. 2 lithium-based grease.

2. Install the bearing (18), and cup packing

(17) with the lips facing down on the pump

connecting rod (37). See F

. 18.

3. Lubricate the piston seals (21) and bearing

(22) with no. 2 lithium-based grease. Install

one piston seal (21) with the lips facing

down, bearing (22), and second piston seal

(21) with lips facing up on the piston (23).

Install the backup washer (20) with the

grooves facing down. See F

. 17 on page

18.

4. Place the ball (3) on top of the piston body

(23) and screw the piston body and the

fluid piston rod (19) together. Torque to

30-35 ft-lb (41-48 N•m). Screw the piston

valve housing (29) onto the lower connect-

ing rod (19). See F

. 17 on page 18.

5. Install the seal (51), with the lips facing

down, in the displacement pump frame

(36), then install bearing (31).

6. Use a turning motion to maneuver and

install the pump connecting rod (37) and

piston back into the pump frame (36). See

. 14 on page 17.

7. Install piston cylinder (58).

a. For Series A and B Pumps: Support the

pump frame (36) with a strap wrench.

Lubricate o-ring (57) lightly with grease

and apply loctite to threads of pump cyl-

inder (58). Torque to 10-15 ft-lbs

(13.5-20 N•m).

b. For Series C Pumps: Support the pump

frame (36) with wrench flats. Lubricate

o-ring (57) lightly with grease and apply

loctite to threads of pump cylinder (58).

Torque to 30-35 ft-lbs (41-48 N•m).

FIG. 19

TI17181a

Install seal (51) from the bottom of the

pump frame (36) with insert tool

24B917.

. 20: Series A and B

. 21: Series C

TI21638b

TI21637a

Repair

20 312766N

8. Install intake valve (29).

a. For Series A and B Pumps: Apply

thread locker to threads of intake valve

(29). Torque to 10-15 ft-lbs (13.5-20

N•m).

b. For Series C Pumps: Lubricate o-ring

(59) and install thread locking com-

pound to threads of intake valve (29).

Torque to 30-35 ft-lbs (41-48 N•m).

. 22: Series A and B

. 23: Series C

TI17179b

TI21636a

Troubleshooting

312766N 21

Troubleshooting

Problem Cause Solution

The pump fails to operate. Dirty or worn air motor. Clean, service.

Inadequate air supply or

restricted lines.

Clean lines or increase the air

supply (see Technical Data).

Closed or clogged air valves. Open or clear the valves.

Clogged fluid hose or valve. Clear the hose or valves.

Worn or damaged valves or

seals.

Service the valves or seals.

The pump operates, but the

output is low on both strokes.

Clogged fluid hose or valve. Clear the hose or valves.

Low or empty fluid supply. Refill the fluid supply and rep-

rime the pump.

Worn or damaged valves or

seals.

Service the valves or seals.

The pump operates, but the

output is low on the down-

stroke.

Held open or worn intake

valve.

Clear or service the valve.

Worn or damaged valves or

seals.

Service the valves or seals.

The pump operates, but the

output is low on the upstroke.

Held open or worn piston

valve.

Clear or service the valve.

Worn or damaged valves or

seals.

Service the valves or seals.

Erratic or accelerated opera-

tion.

Low or empty fluid supply. Refill the fluid supply and rep-

rime the pump.

Broken air motor compression

spring.

Replace the spring.

Pump slowly moves after fluid

shutoff in downstroke.

Clogged or dirty intake valve

check ball.

Clean ball and seat.

Worn or damaged valves or

seats.

Install repair kit.

Pump slowly moves after fluid

shutoff in upstroke.

Clogged or dirty lower piston

ball or seat.

Clean ball and seat.

Worn or damaged valves or

seats.

Install repair kit.

Parts

22 312766N

Parts

T1 2:1 Ratio Transfer Pump, 256200

Torque to 30-35 ft-lb

(41-48 N•m)

Lips face down

Lips face up

Grooves face down

Use assembly tool 24B917

6. Thin, medium, and thick refers to the relative cross section thickness of the o-rings.

16d

16b

16c

TI17182c

16a

(brown)

59 (thin)

(medium)

(thick)

38a

38b

38c

38d

38e

38f

38g

Parts

312766N 23

T1 2:1 Ratio Transfer Pump, 256200

Complete T1 pump repair kit 24X055 contains repair

kits 247958 and 24K363.

† Parts included in repair kit 247958.

◆Parts included in repair kit 24K363.

✖Indicates parts not shown (shipped loose).

★Parts included in repair kit 24R989. See Pump

Lower Disassembly, page 17, for instructions.

Ref. Part Description Qty.

2 101748 PLUG, pipe; SST 1

3◆101750 BALL, bearing, upper 1

5◆101917 BALL, bearing, lower 1

6†156698 O-RING 1

7†157630 SPRING, compression, tapered 1

8 24J673 CYLINDER, air 1

9†157633 SPRING, compression 1

10 157872 WASHER, valve 1

13 24J674 BASE, motor, air 1

14 24J675 HOUSING, connecting rod 1

15 24J676 RING, connecting 1

16 253146 ADAPTER, bung; SST (includes

16a-16g)

16a◆120207 O-RING; inner 1

16b 24J526 ADAPTER 1

16c 234188 CLAMP, hopper 1

16d◆120998 O-RING; O.D.

17◆161788 PACKING, cup; upper piston 1

18◆16C799 BEARING, piston, upper 1

19 256432 ROD, piston, fluid 1

20 161792 RING, back-up 1

21◆161793 SEAL, piston, lower 2

22◆186648 BEARING, piston, lower 1

23 161795 PISTON 1

24 116343 SCREW, ground 1

25✖15K008 LABEL, ID 1

27†162989 GASKET 2

28 164250 PIN, ball stop 1

29★24T262 HOUSING, valve, intake 1

31◆166564 BEARING, connecting rod 1

34 256429 CAP, cylinder, air 1

35 24J678 ROD, piston 1

36 24K361 FRAME, pump 1

37 256431 ROD, pump, connector 1

38 24J679 PISTON, valve, air 1

38a†162729 PLATE, exhaust 1

38b 189210 PISTON 1

38c†108357 O-RING 1

38d 181485 SPACER 3

38e†108358 O-RING 3

38f 181487 PLATE, intake 1

38g 220884 SCREW, #6-32 3

39 172479 TAG, instruction 1

51◆111791 SEAL 1

54✖206264 VALVE, needle 1

55✖169969 FITTING, line, air 1

56✖114558 COUPLER, line, air 1

57★118403 O-RING 1

58★24R988 CYLINDER, piston 1

59★103414 O-RING 1

Ref. Part Description Qty.

Accessories

24 312766N

Accessories

Grounding Clamp

Bleed-Type Master Air Valve

300 psi (2.1 MPa, 21 bar) Maximum Working

Pressure

Air Line Filter

250 psi (1.7 MPa, 17.5 bar) Maximum Working

Pressure

Air Line Lubricator

250 psi (1.7 MPa, 17.5 bar) Maximum Working

Pressure

Air Line Filter and Regulator

180 psi (1.3 MPa, 13 bar) Maximum Working

Pressure

Part Description Qty.

103538 CLAMP, ground 1

Part Description Qty.

107142 VALVE, ball, vented; 1/2 npt(m) inlet x 1/2

npt(f) outlet

Part Description Qty.

106149 FILTER, air line; 1/2 npt(f) inlet and outlet 1

Part Description Qty.

214848 LUBRICATOR, air line; 8 oz (0.24 liter)

bowl capacity; 1/2 npt(f) inlet and outlet

Part Description Qty.

202660 FILTER, air; includes gauge and two 1/4

npt(m) outlet valves, 50 micron filter ele-

ment with 100 mesh inlet strainer; 1/2

npt(f) inlet; flow rate is over 50 scfm (1.4

/min).

01355

Accessories

312766N 25

Air Regulator and Gauge

300 psi (2.1 MPa, 21 bar) Maximum Working

Pressure

Fluid Drain Valve

500 psi (3.5 MPa, 35 bar) Maximum Working

Pressure

Insert Tool 24B917 (4 in. long)

Fluid Pressure Regulator

250 psi (1.7 MPa, 17.5 bar) Maximum Working

Pressure

Fluid Filter

300 psi (2.1 MPa, 21 bar) Maximum Working

Pressure

UHMWPE Packing Conversion Kit,

224017

Part Description Qty.

202156 REGULATOR, air; 0-200 psi (0-14 bar)

regulated pressure range; 3/8 npt(f) inlet

and outlet

Part Description Qty.

208630 VALVE, ball; 1/2 npt(m) x 3/8 npt(f);

for non-corrosive fluids; carbon

steel and PTFE

237534 VALVE, ball; 3/8 npt(m) x 3/8 npt(f);

for corrosive fluids; SST and PTFE

01357

Part Description Qty.

203831 REGULATOR, fluid; carbon steel; 0-60 psi

(0-4 bar) regulated fluid pressure range; 2

gpm (7.6 liter/min) maximum flow rate

209030 REGULATOR, fluid; stainless steel; 5-100

psi (0.4-7 bar) regulated fluid pressure

range; 3 gpm (11.3 liter/min) maximum

flow rate

Part Description Qty.

213057 FILTER, 30 mesh 1

213058 FILTER, 60 mesh 1

213059 FILTER, 100 mesh 1

Part Description Qty.

111004 PACKING, cup 2

111005 PACKING, cup 2

161789 BEARING, piston 1

161794 BEARING, piston 1

405977 MANUAL, instruction 1

01356

0779

Dimensions

26 312766N

Dimensions

51.5 in.

33.7 in.

1/4 npt(f)

Air Inlet

1/2 npt(f)

Fluid Outlet

(85.6 cm)

TI17170a

(130.8 cm)

43.0 in.

(109.2 cm)

Technical Data

312766N 27

Technical Data

Pressure ratio. . . . . . . . . . . . . . . . . . . . . . . . . . 2:1

Maximum fluid working pressure . . . . . . . . . . . 360 psi (2.5 MPa, 25 bar)

Maximum air inlet pressure . . . . . . . . . . . . . . . 180 psi (1.2 MPa, 12 bar)

Pump cycles per 1 gallon (3.8 liters) . . . . . . . . 40

Maximum recommended pump speed for

continuous operation . . . . . . . . . . . . . . . . . . . .

100 cycles per min (150 cycles per min

intermittent)

Gallons (liters) per pump cycle. . . . . . . . . . . . . 0.025 (0.095)

Air consumption . . . . . . . . . . . . . . . . . . . . . . . . See Performance Chart on page 28.

Maximum ambient temperature . . . . . . . . . . . . 120° F (50° C)

Maximum fluid temperature . . . . . . . . . . . . . . . 180° F (82° C)

Wetted parts. . . . . . . . . . . . . . . . . . . . . . . . . . . Stainless Steel, PTFE, PEEK

Fluid recirculation port . . . . . . . . . . . . . . . . . . . 3/8 npt(f)

Air inlet port . . . . . . . . . . . . . . . . . . . . . . . . . . . 1/4 npt(f)

Fluid outlet port 1/2 npt(f)

Weight 18.5 lbs. (8.4 kg)

Sound Pressure 88.7 dB(A) at 80 psi (0.55 MPa, 5.5 bar)

Sound Power, per ISO 9614-2 96.8 dB(A) at 80 psi (0.55 MPa, 5.5 bar)

Technical Data

28 312766N

Performance Chart

Calculate Fluid Outlet Pressure

(black curves)

To calculate fluid outlet pressure (MPa/bar/psi)

at a specific fluid flow (lpm/gpm) and operating

air pressure (MPa/bar/psi), use the following

instructions and pump data chart.

1. Locate desired fluid flow along bottom of

chart.

2. Follow vertical line up to intersection with

selected air pressure curve (black). Follow

horizontally left to read fluid outlet pres-

sure.

Calculate Pump Air

Consumption (gray curves)

To calculate pump air consumption (m

/min or

scfm) at a specific fluid flow (lpm/gpm) and air

pressure (MPa/bar/psi), use the following

instructions and pump data chart.

1. Locate desired fluid flow along bottom of

chart.

2. Follow vertical line up to intersection with

selected air pressure curve (gray). Follow

horizontally right to read air consumption.

Outlet Pressure in PSI (MPa, bar)

Air Consumption in SCFM (m3/min)

Fluid Flow in gpm (lpm)

Key:

A 180 psi (1.2 MPA, 12.4 bar)

B 100 psi (0.7 MPA, 7 bar)

C 70 psi (0.5 MPa, 7.8 bar)

D 40 psi (0.3 MPa, 2.8 bar)

350

300

250

200

150

100

(24.5, 245)

(21, 210)

(17.5, 175)

(14, 140)

(10.5, 105)

(7, 70)

(3.5, 35)

(0.672)

(0.560)

(0.448)

(0.336)

(0.224)

(0.112)

00.5

(1.9) (3.8) (5.7) (7.6) (9.5) (11.4)

11.5 22.5 3

(13.2)

3.5

(15.1)

Technical Data

312766N 29

All written and visual data contained in this document reflects the latest product information available at the time of publication.

Graco reserves the right to make changes at any time without notice.

For patent information, see www.graco.com/patents.

This manual contains English. MM 312766

Graco Headquarters: Minneapolis

International Offices: Belgium, China, Japan, Korea

GRACO INC. AND SUBSIDIARIES • P.O. BOX 1441 • MINNEAPOLIS MN 55440-1441 • USA

www.graco.com

Revised December 2013

Graco Standard Warranty

Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from

defects in material and workmanship on the date of sale to the original purchaser for use. With the exception of any special,

extended, or limited warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace

any part of the equipment determined by Graco to be defective. This warranty applies only when the equipment is installed,

operated and maintained in accordance with Graco’s written recommendations.

This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused

by faulty installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering,

or substitution of non-Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the

incompatibility of Graco equipment with structures, accessories, equipment or materials not supplied by Graco, or the improper

design, manufacture, installation, operation or maintenance of structures, accessories, equipment or materials not supplied by

Graco.

This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor

for verification of the claimed defect. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts.

The equipment will be returned to the original purchaser transportation prepaid. If inspection of the equipment does not disclose

any defect in material or workmanship, repairs will be made at a reasonable charge, which charges may include the costs of parts,

labor, and transportation.

THIS WARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING

BUT NOT LIMITED TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR

PURPOSE.

Graco’s sole obligation and buyer’s sole remedy for any breach of warranty shall be as set forth above. The buyer agrees that no

other remedy (including, but not limited to, incidental or consequential damages for lost profits, lost sales, injury to person or

property, or any other incidental or consequential loss) shall be available. Any action for breach of warranty must be brought within

two (2) years of the date of sale.

GRACO MAKES NO WARRANTY, AND DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS

FOR A PARTICULAR PURPOSE, IN CONNECTION WITH ACCESSORIES, EQUIPMENT, MATERIALS OR COMPONENTS

SOLD BUT NOT MANUFACTURED BY GRACO. These items sold, but not manufactured by Graco (such as electric motors,

switches, hose, etc.), are subject to the warranty, if any, of their manufacturer. Graco will provide purchaser with reasonable

assistance in making any claim for breach of these warranties.

In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from Graco supplying

equipment hereunder, or the furnishing, performance, or use of any products or other goods sold hereto, whether due to a breach

of contract, breach of warranty, the negligence of Graco, or otherwise.

FOR GRACO CANADA CUSTOMERS

The Parties acknowledge that they have required that the present document, as well as all documents, notices and legal

proceedings entered into, given or instituted pursuant hereto or relating directly or indirectly hereto, be drawn up in English. Les

parties reconnaissent avoir convenu que la rédaction du présente document sera en Anglais, ainsi que tous documents, avis et

procédures judiciaires exécutés, donnés ou intentés, à la suite de ou en rapport, directement ou indirectement, avec les

procédures concernées.

Graco Information

For the latest information about Graco products, visit www.graco.com.

TO PLACE AN ORDER, contact your Graco distributor or call to identify the nearest distributor.

Phone: 612-623-6921 or Toll Free: 1-800-328-0211 Fax: 612-378-3505

Graco 312766N T1 2 1 Ratio Transfer Pump Users Manual

256200 to the manual a618d8f5-a872-4fd7-b82e-c4265a40c0b9

Navigation menu

Versions of this User Manual:

Views

Navigation