Graco 295616 User Manual

Instructions

311882T

2:1 Ratio Transfer Pump

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

Not for use in explosive atmospheres.

Model 295616 (55-gallon drum)

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.

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Warnings

Contents

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

Moisture Sensitivity of Isocyanates . . . . . . . . . . . . 4

Isocyanate Hazard . . . . . . . . . . . . . . . . . . . . . . . 4

Foam Self-Ignition . . . . . . . . . . . . . . . . . . . . . . . . 4

Keep Components A and B Separate . . . . . . . . . 4

Changing Materials . . . . . . . . . . . . . . . . . . . . . . . 4

Typical Installation . . . . . . . . . . . . . . . . . . . . . . . . . 5

Typical Installation, without Circulation . . . . . . . . 5

Typical Installation, with Circulation . . . . . . . . . . 6

Typical Installation for Lubrication Applications . 7

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

System Accessories . . . . . . . . . . . . . . . . . . . . . . 8

Air Line Accessories . . . . . . . . . . . . . . . . . . . . . . 8

Fluid Line Accessories . . . . . . . . . . . . . . . . . . . . 8

Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Grounding the System . . . . . . . . . . . . . . . . . . . 10

Warnings

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Pressure Relief Procedure . . . . . . . . . . . . . . . . 11

Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Daily Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Daily Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . 11

Air Motor Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Pump Lower Repair . . . . . . . . . . . . . . . . . . . . . . . . 14

Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Parts - Model 295616 . . . . . . . . . . . . . . . . . . . . . . . 18

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Performance Chart . . . . . . . . . . . . . . . . . . . . . . 23

Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 24

Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . 24

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 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

2 311882T

Warnings

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 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 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.

311882T 3

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.

The amount of film formation and rate of crystallization varies depending on the blend of ISO, the humidity, and the temperature.

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

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.

Foam Self-Ignition

Some materials may become self-igniting if applied too thick. Read material manufacturer’s warnings and material MSDS.

Keep Components A and B Separate

CAUTION

To prevent cross-contamination of the equipment’s wetted parts, never interchange component A and component B.

Changing Materials

• When changing materials, flush the equipment multiple times to ensure it is thoroughly 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 (catalyst) side. Polyurethanes often have amines on the B (resin) side.

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Typical Installation

Typical Installation, without Circulation

Key for FIG. 1

Typical Installation

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.

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

ti11572a

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

FIG. 1: Typical Installation, without Circulation

311882T 5

Typical Installation

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

ti11571a

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

6 311882T

Typical Installation for Lubrication Applications

Key for FIG. 3

Typical Installation

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 3/4 npt(f) Pump Fluid Outlet

FIG. 3: Typical Installation for Lubrication Applications

01349

311882T 7

Installation

A bleed-type master air valve (D) and a fluid drain valve (E) 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 (D) 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 (E) helps relieve pressure in the displacement pump, hose, and dispensing valve when shutting off the pump. Actuating the dispensing valve to relieve pressure may not be sufficient, especially if there is a clog in the hose or the dispensing valve.

Fluid Line Accessories

A fluid drain valve (E) 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 handle points up when the valve is opened.

System Accessories

To ensure maximum pump performance, be sure that all accessories used are properly sized to meet your system’s requirements. See Accessories, page 20.

Air Line Accessories

Install the following accessories in the order shown in the Typical Installation for Lubrication Applications, using adapters as necessary:

An air line lubricator (B) provides automatic air motor lubrication.

A bleed-type master air valve (D) 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 (C) to remove harmful dirt and moisture from the compressed air supply.

A second bleed-type air valve (D) isolates the air line accessories for servicing. Locate upstream from all other air line accessories.

8 311882T

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