Graco Gun Flush Box 244105 Manuale operativo

Instructions – Parts List

GRACO INC.ąP.O. BOX 1441ąMINNEAPOLIS, MNą55440-1441

Gun Flush BoxtModule

100 psi (0.7 MPa, 7 bar) Maximum Air Inlet Pressure

Part No. 244105

U.S. PATENT NO. 6,554,204

309227D

Read warnings and instructions.

Keep for reference.

Parts

2 309227

Table of Contents

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

Introduction 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Typical Installation 6. . . . . . . . . . . . . . . . . . . . . . . . . .

Ventilation 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Location 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mounting 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Enclosed Waste Container 7. . . . . . . . . . . . . . . . . . .

Grounding 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Connect Tubing to the Pneumatic Controls 9. . . . .

Trigger Height Adjustment 10. . . . . . . . . . . . . . . . . . . . . .

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

PrecisionMixII Controller Operation 11. . . . . . . . .

Operating Checklist 11. . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maintenance 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Accessories 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Technical Data 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Graco Standard Warranty 18. . . . . . . . . . . . . . . . . . . . . . .

Graco Information 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

309227 3

WARNING

FIRE, EXPLOSION, AND ELECTRIC SHOCK HAZARD

Improper grounding, poor air ventilation, open flames, or sparks can cause a hazardous condition and

result in fire, explosion, or electric shock, which can result in serious injury.

Ground the equipment and the object being sprayed. See Grounding on page 7.

Provide fresh air ventilation to avoid the buildup of flammable fumes from solvent or the fluid being

sprayed. Never operate the Gun Flush Box unless ventilation fans are operating.

Eliminate all ignition sources such as pilot lights, cigarettes and plastic drop cloths (static arc haz-

ard). Do not plug or unplug power cords or turn lights on or off in the spray area.

Keep the spray area free of debris, including solvent, rags, and gasoline.

Do not operate a gasoline engine in the spray area.

If there is any static sparking while using the equipment, stop spraying immediately. Identify and

correct the problem.

Electrostatic Gun Safety

Do not flush the system with the gun electrostatics turned on.

Interlock the gun turbine air supply to prevent operation of the power supply during flushing.

Do not turn on the gun electrostatics until all solvent is removed from the system.

When cleaning, flushing, or purging electrostatic equipment, use solvents that comply with your

local regulations. For countries following the U.S. National Fire Protection Association (NFPA) 33

requirements, use solvents with a flash point higher than 100F (38 C) or a solvent normally

used in spray operations. For European Countries complying with EN 50053, use solvents with a

flash point as high as possible and higher than the ambient temperatures.

PRESSURIZED EQUIPMENT HAZARD

Spray from the gun, hose leaks, or ruptured components can splash fluid in the eyes or on the skin

and cause serious injury.

Do not bypass the Gun Flush Box interlock sensors. They prevent the Gun Flush Box from operat-

ing unless the gun is in position and the door of the box is locked.

Connect an interlock to prevent atomizing air from turning on during flushing.

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

Tighten all the fluid connections before operating the equipment.

Check the hoses, tubes, and couplings daily. Replace worn, damaged, or loose parts immediately.

Permanently coupled hoses cannot be repaired; replace the entire hose.

4 309227

WARNING

INSTRUCTIONS

EQUIPMENT MISUSE HAZARD

Equipment misuse can cause the equipment to rupture, malfunction, or start unexpectedly and result

in serious injury.

This equipment is for professional use only.

Read all instruction manuals, tags, and labels before operating the equipment.

Use the equipment only for its intended purpose. If you are uncertain about usage, call your Graco

distributor.

Do not alter or modify this equipment. Use only genuine Graco parts and accessories.

Check the equipment daily. Repair or replace worn or damaged parts immediately.

Do not exceed the maximum working pressure of the lowest rated system component. This equip-

ment has a 100 psi (0.7 MPa, 7 bar) maximum air inlet pressure.

Route the hoses away from the traffic areas, sharp edges, moving parts, and hot surfaces. Do not

expose Graco hoses to temperatures above 180F (82C) or below –40F (–40C).

Use only Graco approved hoses.

Use fluids or solvents that are compatible with the equipment wetted parts. See the Technical Data

section of all the equipment manuals. Read the fluid and solvent manufacturer’s warnings.

Wear hearing protection when operating this equipment.

Comply with all applicable local, state and national fire, electrical and other safety regulations.

TOXIC FLUID HAZARD

Hazardous fluids or toxic fumes can cause serious injury or death if splashed in the eyes or on the

skin, swallowed, or inhaled.

Know the specific hazards of the fluid you are using. Read the fluid manufacturer’s warnings.

Store hazardous fluid in an approved container. Dispose of hazardous fluid according to all local,

state and national guidelines.

Wear the appropriate protective clothing, gloves, eyewear and respirator.

309227 5

Introduction

How the Gun Flush Box Works

WARNING

FIRE, EXPLOSION, AND ELECTRIC

SHOCK HAZARD

For Electrostatic Guns: To reduce the

risk of fire, explosion, or electric shock:

In addition to following the warnings

on page 3, read your electrostatic

gun manual for additional warnings

and instructions on the safe use of an

electrostatic gun. If you do not have a

copy of this manual, please contact

your local Graco distributor.

Always turn off the electrostatics before placing

the gun in the Gun Flush Box and whenever you

stop spraying.

WARNING

FIRE AND EXPLOSION HAZARD

In multiple gun systems: For your

safety, each gun must be used only with

its corresponding Gun Flush Box for the

interlocks to work. For example: With a

two gun system, placing gun #1 into Gun

Flush Box #2 will shut off the atomization air for

gun #2 and leave the atomization air on for gun #1

during purging.

Features

When used with a PrecisionMix or a PrecisionMix II

system, the Gun Flush Box operates with a controller

to automatically flush manual guns into an enclosed

waste container. The advantages of using the Gun

Flush Box instead of conventional flushing methods

include:

Reduced solvent use

Reduced VOC (volatile organic compounds) emis-

sions

Improved operator safety during flushing

The Gun Flush Box controller flushes the exact amount

of solvent required to clean the system. It reduces

VOCs by preventing solvent from being atomized

during the flush cycle.

Traditional flushing procedures expose the operator to

atomized solvent and accidental gun discharge. The

Gun Flush Box contains the solvent and prevents

accidental gun triggering with safety interlocks.

The interlocks will only allow atomizing air to the gun

when the gun is out of the Gun Flush Box and the door

of the box is closed. If a switch fails or if system air is

shut off, the atomizing air will be shut off to the gun.

Operation

NOTE: If using an electrostatic gun, the operator must

turn off the electrostatics before placing the gun in the

box.

The operator places the gun in the Gun Flush Box and

closes the door. The Gun Flush Box interlocks turn off

the atomizing air to the gun to prevent the solvent from

being atomized and to ensure a PROgun electro-

static turbine will be off when the operator starts flush-

ing.

6 309227

Installation

Typical Installation

Refer to the typical installation drawing in Fig. 4, page

8, as a guide for installing the Gun Flush Box. Contact

your Graco distributor for an actual system design.

Ventilation

WARNING

TOXIC OR FLAMMABLE FUMES

HAZARD

To avoid hazardous concentrations of

flammable or toxic fumes, install the Gun

Flush Box in a properly ventilated spray

booth. Never operate the Gun Flush Box

unless ventilation fans are operating.

Electrically interlock the Gun Flush Box air supply with

the ventilators to prevent the box from operating when

ventilating fans are not operating. Check and follow all

National, State, and Local codes regarding air exhaust

velocity requirements.

Location

Locate the Gun Flush Box in an area easily accessible

to the operator and away from the spray or application

point, to help avoid getting over-spray on it.

Mounting

The Gun Flush Box can be wall, stand, or drum moun-

ted in the spray booth. Install the gun flush box(es),

using the mounting holes as a template. See Fig. 1 for

dimensions. Make sure the mounting surface will

withstand the weight of the Gun Flush Box, hoses, and

the stress of operation.

Depth: 9 in.

(229 mm)

Fig. 1

14 in.

(356 mm)

9 in.

(229 mm)

309227 7

Installation

Enclosed Waste Container

WARNING

TOXIC FLUID HAZARD

To reduce the risk of splashing, a minimum of two

feet (0.6 m) of straight plastic or grounded metal

pipe or tubing must be connected between the Gun

Flush Box and an enclosed waste container for the

solvent.

Connect two feet (0.6 m) of straight plastic or grounded

metal pipe or tubing (T) between the Gun Flush Box

fluid outlet (O) and an enclosed waste container (W).

See Fig. 2.

Fig. 2

Grounding

WARNING

FIRE, EXPLOSION, AND ELECTRIC

SHOCK HAZARD

To reduce the risk of fire, explosion, or

electric shock, the system must be

properly grounded. Follow the warnings

on page 3. Ground the Gun Flush Box

and waste container as instructed below.

Ground your system as instructed in the

manuals included with your equipment.

Gun Flush Box: Connect a ground wire to the ground-

ing lug (A) on the box. Connect the ground clamp to a

true earth ground. Refer to Fig. 3.

Waste Container: Connect a ground wire and clamp

between the waste container and a true earth ground.

Refer to Fig. 4.

Spray Gun: See your gun instruction manual.

Flammable Liquids in the spray area must be kept in

approved, grounded containers. Do not store more

than the quantity needed for one shift.

Fig. 3

8 309227

Installation

Typical Installation of Gun Flush Box in PrecisionMix System

Fig. 4

309227 9

Installation

Connect Tubing to the Pneumatic Controls

Fig. 5 shows the bottom of the Gun Flush Box. The

four bulkhead fittings are labeled:

P = Supply air in

A = Return air (for the gun in the box)

C = Gun trigger cylinders air (activates the gun trigger)

S = Safety interlock (locks out the atomizing air)

See Fig. 6 for detailed information on the Gun Flush

Box internal pneumatics.

Fig. 5

BOTTOM VIEW

1. Connect a 5/32” (4 mm) OD tube between the air

supply and the Pbulkhead. Use a clean, dry air

supply; filtered to 10 microns.

WARNING

EQUIPMENT MISUSE HAZARD

Do not exceed 100 psi (0.7 MPa, 7 bar)

maximum air pressure.

INSTRUCTIONS

2. Connect a 5/32” (4 mm) OD tube between the A

bulkhead and the return air input on the controller.

See Fig. 6.

3. Connect a 5/32” (4 mm) OD tube between C

bulkhead and the gun trigger solenoid output on

the solenoid box or the Gun Flush Box control box.

See Fig. 6.

Fig. 6

TYPICAL TWO-GUN PNEUMATIC SCHEMATIC

10 309227

Trigger Height Adjustment

Follow this procedure to ensure the gun triggers prop-

erly during a purge.

1. Insert the gun into the Gun Flush Box.

2. Remove the four screws that hold the cover (K) to

the Gun Flush Box. See Fig. 7.

3. Force the cylinder triggers on by connecting air to

port C (J). See Fig. 7. Turn on the air to extend

both cylinders.

4. Loosen both screws (L) on the side of the box that

hold the cylinder block (M). See Fig. 8.

Fig. 7

5. Raise the cylinder (M) until the pin (N) opens the

trigger fully. See Fig. 8.

6. Tighten both screws (L) at the desired location for

the cylinder block (M).

Fig. 8

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