Graco 312749G User Manual

Instructions - Parts

XM Mix Manifold Kits

For mixing two component reactive materials with XM plural-component sprayers. Not for use on mechanical proportioners. Approved for use in explosive atmospheres.

For professional use only.

312749G

Part No. 255684

Mix Manifold

Part No. 256980

Remote Mix Manifold Conversion Kit with protective guard

7250 psi (50 MPa, 500 bar) Maximum Working Pressure 160°F (71°C) Maximum Fluid Temperature

Important Safety Instructions

Read all warnings and instructions in this manual. Save these instructions.

Mix Manifold and Remote Mix Manifold

Conversion Kit

II 2G c T5

Related Manuals

Contents

Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

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

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

Material Self-Ignition . . . . . . . . . . . . . . . . . . . . . . . . 5

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

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

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

Component Identification . . . . . . . . . . . . . . . . . . . . 7

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Fluid Inlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Remote Mounted Manifolds . . . . . . . . . . . . . . . . 9

Remote Circulation Control Valves . . . . . . . . . . . 9

Solvent Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Fluid Outlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Flush Before Using Equipment . . . . . . . . . . . . . . 11

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Pressure Relief Procedure . . . . . . . . . . . . . . . . 12

Flush . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Dispensing and Spraying . . . . . . . . . . . . . . . . . 14

Volume Balancing the Mix Manifold . . . . . . . . . 15

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Remove Restrictor . . . . . . . . . . . . . . . . . . . . . . 19

Assemble Restrictor . . . . . . . . . . . . . . . . . . . . . 20

Assemble Cartridge Assembly . . . . . . . . . . . . . 20

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Clean Static Mixers . . . . . . . . . . . . . . . . . . . . . . 21

Clean “B” Side Screen . . . . . . . . . . . . . . . . . . . 21

Clean Mix Manifold Outlet . . . . . . . . . . . . . . . . . 21

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

255684 Mix Manifold . . . . . . . . . . . . . . . . . . . . . 22

Repair Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Accessory Ports . . . . . . . . . . . . . . . . . . . . . . . . 28

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

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

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

Related Manuals

Manuals are available at www.graco.com.

Component Manuals in U.S. English

Manual Description

312359 XM Operation

313289 XM Repair

313292 XM OEM, Instructions-Parts

313342 Dosing Valve, Instructions-Parts

313343

306861

310797 Mix Manifold Kits, Instructions-Parts

307892 Back Pressure Valve Instructions-Parts

High Flow Severe Duty Shutoff Check Valve, Instructions-Parts

Ball Valves, Check Valves, and Swivels, Instructions-Parts

2 312749G

Warnings

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

WARNINGWARNINGWARNING

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.

• When flammable liquid is sprayed or used for flushing or cleaning, keep sprayer at least 20 feet (6 meters) away from explosive vapors.

• 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.

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.

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 gun at anyone or at any part of the body.

• Do not put your hand over the spray tip.

• Do not stop or deflect leaks with your hand, body, glove, or rag.

• Do not spray without tip guard and trigger guard installed.

• Engage trigger lock when not spraying.

•Follow Pressure Relief Procedure in this manual, when you stop spraying and before cleaning, checking, or servicing equipment.

312749G 3

Warnings

WARNING

WARNINGWARNINGWARNING

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.

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.

• 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.

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

4 312749G

Isocyanate Hazard

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 providing sufficient ventilation in the work area. If sufficient ventilation is not available, a supplied-air respirator is required for everyone in the work area.

To prevent contact with isocyanates, appropriate personal protective equipment, including chemically impermeable gloves, boots, aprons, and goggles, is also required for everyone in the work area.

Material Self-Ignition

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.

NOTE:

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.

• Keep the ISO lube pump reservoir filled with Graco Throat Seal Liquid (TSL), Part 206995. The lubricant creates a barrier between the ISO and the atmosphere.

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

• 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 park pumps when you shutdown.

• Always lubricate threaded parts with Part 217374 ISO pump oil or grease when reassembling.

312749G 5

Keep Components A and B Separate

NOTICE

To prevent cross-contamination of the equipment’s wetted parts, never interchange component A (isocyanate) and component B (resin) parts. The gun is shipped with the A side on the left. The fluid manifold, fluid housing, side seal assembly, check valve cartridge, and mix chamber are marked on the A side.

Changing Materials

• When changing materials, flush the equipment multiple times to ensure it is thoroughly clean.

• Always clean the fluid inlet strainers after flushing.

• 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.

6 312749G

Component Identification

P, R

FIG. 1: Typical Installation

Key:

A Resin (High Volume) Supply Hose (A material) B Hardener (Low Volume) Supply Hose (B material) C Resin Adapter Nipple D Hardener Adapter Nipple E Resin Shutoff Handle (blue; A material) F Solvent Inlet Valve, 1/4 npt(m) G Grounded Solvent Hose H Hardener Shutoff Handle (green; B material) J Hardener Restrictor Adjustment K Hardener Screen (inside) L Integrator Hose

M Solvent Check Valve P Hardener Injector (not shown; inside outlet R) R Mix Manifold Outlet, 1/2 npt(f) with 3/8 npt(m) adapter S Static Mixer Housing T Fluid Whip Hose U Airless Spray Gun V Static Mixer Adapter W Static Mixing Element

312749G 7

Overview

XM plural-component sprayers can mix most two component epoxy and urethane protective coatings. When using quick-setting materials (less than 10 minute pot life) a remote mix manifold must be used.

The left side of the mix manifold is intended for the major volume material, or the higher viscosity material if using a 1:1 volume mix. This side is referred to throughout the manual as the resin side or “A” side.

The right side is referred to as the Hardener side or “B” side. The “B” side incorporates a 40 mesh strainer and an adjustable restrictor for balancing the system back pressure and flow.

See F

. 2 to view flow of A and B material inside the

XM Mix Manifold.

Resin Hardener

The resin and hardener enter the manifold through the manifold inlet ports. The “A” material flows through the manifold to the material outlet port. The injector tube creates a hollow stream of “A” material for the “B” material to fill once the hardener exits the injector tube. The mixed resin and hardener material enters the mix manifold outlet (R) before the mixed material enters the integrator fluid hose. Adjust the restrictor housing to balance the system back pressure and flow.

NOTE: Always use the integration hose, supplied with your XM plural-component sprayer, after the mix manifold.

NOTE: Please follow these recommendations for setup:

• Use at least a 3/8 in. (10 mm) x 25 ft. (7 m) integrator hose.

• Install at least 24-elements of static mixer after the integration hose and before the spray gun whip hose.

Hardener

Resin

Mixed Material

. 2: Cutaway View

8 312749G

r_255684_256980_312749_17a

Installation

This manifold is designed for use on proportioning pumps with independent drive motors. Use of this manifold on a mechanically linked sprayer without using mechanically linked on/off A and B valves may cause hazardous fluid pressures that can rupture equipment.

Installation

Machine Mounted Restrictor Valve

When the mix manifold is used remotely a restrictor valve (222200) is added to the B side outlet of the proportioner. This configuration requires that the machine outlet restrictor be used to set the bar graph on the Ratio Mode screen.

Remote Circulation Control

For assistance in setting up a plural component sprayer, contact your Graco distributor, to ensure that you select the proper type and size equipment for your system.

Fluid Inlets

The A and B fluid inlets are equipped with 1/2 npsm unions in 1/2 in. npt(f) ports. Connect 1/2 in., 3/8 in, or 1/4 in. npsm(f) fluid hoses using the two adapter nipples (provided).

Remote Mounted Manifolds

Machine Outlet Check Valves

The XM sprayer must have outlet check valves (CV) in order to accurately measure pump outlet flow. These check valves are provided in the mix manifold when it is mounted on the sprayer.

When the mix manifold is removed and used remotely, you must add outlet check valves on the machine. Use shutoff check valves 255278 as the outlet check valves as provided in conversion kit 256980. The valves act as severe duty check valves when the check valve handle is open. They act as manual shutoff valves when the handle is closed.

Valves

Shutoff check valves (CV) may also be face-mounted on the remote mix manifold to circulate heated material before spraying.

r_255684_256980_312749_4

. 4: Remote Mix Manifold Options on Carriage

. 3: Machine Outlet Check Valves

312749G 9

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