Graco T2 295616 Bedienungsanleitung

Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441

Instructions

T2 311882 rev.A

2:1 Ratio Transfer Pump

For use with polyurethane foam, polyurea, and similar non-flammable materials.

Not for use in explosive atmospheres.

Model 295616

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

405 psi (2.7 MPa, 27 bar) Maximum Fluid Working Pressure

Important Safety Instructions

Read all warnings and instructions in this manual.

Save these instructions.

ti9889a

Warnings

2311882A

Contents

Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Typical Installation . . . . . . . . . . . . . . . . . . . . . . . . . 4

Moisture Sensitivity of Isocyanates . . . . . . . . . . . . 7

Isocyanate Hazard . . . . . . . . . . . . . . . . . . . . . . . 7

Foam Self-Ignition . . . . . . . . . . . . . . . . . . . . . . . . 7

Keep Components A and B Separate . . . . . . . . . 7

Changing Materials . . . . . . . . . . . . . . . . . . . . . . . 7

Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Grounding the System . . . . . . . . . . . . . . . . . . . . 9

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Pressure Relief Procedure . . . . . . . . . . . . . . . . 10

Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Daily Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Daily Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . 10

Air Motor Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Pump Lower Repair . . . . . . . . . . . . . . . . . . . . . . . . 12

Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Performance Chart . . . . . . . . . . . . . . . . . . . . . . 19

Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 20

Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . 20

Warnings

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

tion 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, including 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

Warnings

311882A 3

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 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 manu-

facturer’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 immediately.

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. Disconnect power or air supply.

WARNING

Typical Installation

4311882A

Typical Installation

Typical Installation, without Circulation

Key for FIG. 1

A Reactor Proportioner

BHeatedHose

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.

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

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

ti8489a

Typical Installation

311882A 5

Typical Installation, with Circulation

Key for FIG. 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

K Feed Pumps

L Agitator

M Desiccant Dryer

N Recirculation/Over Pressure Relief Return Hoses

P Gun Fluid Manifold

FIG. 2: Typical Installation, with Circulation

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

ti8488a

Typical Installation

6311882A

Typical Installation for Lubrication Applications

Key for FIG. 3

A Pump Air Regulator

B Air Line Lubricator

C Air Line Filter

D Bleed-Type Master Air Valve (required, for pump)

E Fluid Drain Valve (required)

F Bung Adapter

G Grounded Air Hose

H Grounded Fluid Hose

J Pump Fluid Inlet

K 1/4 npt(f) Pump Air Inlet

L 1/2 npt(f) Pump Fluid Outlet

FIG. 3: Typical Installation for Lubrication Applications

01349

Moisture Sensitivity of Isocyanates

311882A 7

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 desiccant

dryer in the vent, or a nitrogen atmosphere. 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 containers 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 reassembling.

Isocyanate Hazard

Foam Self-Ignition

Keep Components A and B

Separate

Changing Materials

• When changing materials, flush the equipment

multiple times to ensure it is thoroughly clean.

• Check with your material manufacturer for chemical

compatibility.

• Most materials use ISO on the A side, but some use

ISO on the B side.

• Epoxies often have amines on the B (hardener)

side. Polyureas often have amines on the B (resin)

side.

The amount of film formation and rate of

crystallization varies depending on the blend of

ISO, the humidity, and the temperature.

Read material manufacturer’s warnings and material

MSDS to know the specific hazards of isocyanates.

Use equipment in a well-ventilated area. Wear

respirator, gloves, and protective clothing when using

isocyanates.

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

(isocyanate) and component B (resin) parts.

Setup

8311882A

Setup

1. Apply thread sealant to the male threads of the air

needle valve (48) and the quick disconnect fitting

(49) and install. See FIG. 4

2. Apply thread sealant to the male outlet fitting (not

supplied) and insert into the outlet port. See FIG. 5.

3. When applying component labels (70) to pump cap

(1) make sure you do not cover the hole in the cap.

Use the “A” label for the ISO pump and the “B” label

for the resin pump. See FIG. 5 and FIG. 6.

4. Lubricate the bung adapter inside diameter and

mounting threads. Ensure the gasket is in place and

screw the bung adapter (51) securely into the bung-

hole of the drum. Insert the pump through the

adapter and lock it in place. See FIG. 7.

FIG. 4

FIG. 5

48 49

Apply thread sealant

ti9968a

Apply thread sealant

Hole (do not obstruct

with Component label

ti9969a

FIG. 6

FIG. 7

Hole (do not obstruct

with Component label)

Lubricate threads

ti9967a

Setup

311882A 9

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

quick disconnect air coupler (52) provided. See FIG.

Grounding the System

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.

1. Pump: Connect Ground Wire (Y) to grounding screw

(72) and tighten the screw securely. See FIG. 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 manufacturer’s recom-

mendations.

3. Fluid hoses: use only grounded hoses with a maxi-

mum of 500 ft (150 m) combined hose length to

ensure grounding continuity. Refer to Hose Ground-

ing 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 conduc-

tive. Do not place the pail on a non–conductive sur-

face, 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

FIG. 9

ti9970

Operation

10 311882A

Operation

Pressure Relief Procedure

1. Engage trigger lock.

2. Close the bleed-type master air valve.

3. Disengage the trigger lock.

4. Hold a metal part of the dispense valve firmly to a

grounded metal pail. Trigger the valve to relieve

pressure.

5. Engage the trigger lock.

6. 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.

7. 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 coupling to relieve pressure gradually, then

loosen completely. Clear hose or nozzle obstruction.

Flushing

1. Follow Pressure Relief Procedure, page 10.

2. Place suction tube in grounded metal pail 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 dispenses.

5. Remove valve from hose.

6. Follow Pressure Relief Procedure, and remove

fluid filter and soak in solvent. Replace filter cap.

Daily Startup

1. Verify that the air needle valve is closed.

2. Connect the air line quick disconnect coupler 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 air line coupler.

2. When air pressure is bled off, close the air line nee-

dle valve.

Trapped air can cause the pump to cycle unexpectedly,

which could result in serious injury from splashing or

moving parts.

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 possible. 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.

Caution

Never allow the pump to run dry of the fluid being

pumped. A dry pump will quickly accelerate to a high

speed and could cause personal injury and/or dam-

age to the pump. If the pump accelerates 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

and prime the pump and the lines with fluid, or flush

and leave it filled with a compatible solvent. Be sure to

eliminate all air from the fluid system.

Do not attempt to operate pump unless it is securely

mounted in a drum.

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