Graco Dispensit 710 Manuale utente

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332094C

Instructions

Dispensit 710

Depending on valve configuration, this valve can be used to dispense the following:

Acrylics, Conformal Coatings, Epoxies, Lubricants, RTV Silicones, Silicone Oils, Solder

Flux, Solder Mask, UV Curables

Dispense Valve

100psi (0.69 MPa, 6.9 bar) Maximum Air Working Pres-

sure

1200psi (82.7 bar) Maximum Material Inlet Pressure

Important Safety Instructions

Read all warnings and instructions in this manual.

Save these instructions.

2332094C

Contents

710 Valve Models . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

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

General Information . . . . . . . . . . . . . . . . . . . . . . . . 5

Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Illustration References. . . . . . . . . . . . . . . . . . . . . . . 5

General Accessories . . . . . . . . . . . . . . . . . . . . . . . . 5

Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Description of Operation . . . . . . . . . . . . . . . . . . . . 9

Setup Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Mounting Dispense Valve . . . . . . . . . . . . . . . . . 10

Air Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Operating Procedures . . . . . . . . . . . . . . . . . . . . . . 11

Dry System Checkout . . . . . . . . . . . . . . . . . . . . 11

Material Loading . . . . . . . . . . . . . . . . . . . . . . . . 11

Wet System Checkout . . . . . . . . . . . . . . . . . . . 11

Operation Adjustments . . . . . . . . . . . . . . . . . . . 12

Periodic Maintenance . . . . . . . . . . . . . . . . . . . . . . 13

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

Dispense Needle Replacement . . . . . . . . . . . . . 13

Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Model 710 General Illustration . . . . . . . . . . . . . . 14

Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Nothing Happens . . . . . . . . . . . . . . . . . . . . . . . . 16

Valve Cycles, Nothing Dispensed . . . . . . . . . . . 16

Irregular Volume Dispensed . . . . . . . . . . . . . . . 16

Reduced Volumes Dispensed . . . . . . . . . . . . . . 16

No Material Dispensed . . . . . . . . . . . . . . . . . . . 16

Material Continues to Flow After Shut Off . . . . . 16

Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Model 710 Recommended Spare Parts . . . . . . . . 19

General Guidelines for O-Rings and U-Cup Seals 20

O-Ring Guidelines . . . . . . . . . . . . . . . . . . . . . . . 20

U-Cup Seal Guidelines . . . . . . . . . . . . . . . . . . . 20

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 22

Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . 22

710 Valve Models

710 Valves

Part No. Configuration Description

A9A01019 VALVE, 710, REMOTE, NO NDL, NO SOL Stainless wetted components, No needle, No Solenoid

Warnings

332094C 3

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 symbols refer to procedure-specific risks. When

these symbols appear in the body of this manual or on warning labels, refer back to these Warnings. Product-specific

hazard symbols and warnings not covered in this section may appear throughout the body of this manual where

applicable.

WARNING

SKIN INJECTION HAZARD

High-pressure fluid from dispensing device, 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 dispensing device at anyone or at any part of the body.

• Do not put your hand over the fluid outlet.

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

• Follow the Pressure Relief Procedure when you stop dispensing and before cleaning, checking, or

servicing equipment.

• Tighten all fluid connections before operating the equipment.

• Check hoses and couplings daily. Replace worn or damaged parts immediately.

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 Safety Data Sheet (SDS) 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.

BURN HAZARD

Equipment surfaces and fluid that is heated can become very hot during operation. To avoid severe

burns:

• Do not touch hot fluid or equipment.

Warnings

4332094C

Changing Materials

PERSONAL PROTECTIVE EQUIPMENT

Wear appropriate protective equipment when in the work area to help prevent serious injury, including

eye injury, hearing loss, inhalation of toxic fumes, and burns. Protective equipment includes but is not

limited to:

• Protective eyewear, and hearing protection.

• Respirators, protective clothing, and gloves as recommended by the fluid and solvent manufacturer.

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 com-

ponent. 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 Safety Data Sheet (SDS) from distributor or retailer.

• Do not leave the work area while equipment is energized or under pressure.

• Turn off all equipment and follow the Pressure Relief Procedure when equipment is not in use.

• 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. Alterations or modifications may void agency approvals and create

safety hazards.

• Make sure all equipment is rated and approved for the environment in which you are using it.

• 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.

WARNING

NOTICE

Changing the material types used in your equipment

requires special attention to avoid equipment damage

and downtime.

• 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.

• When changing between epoxies and urethanes

or polyureas, disassemble and clean all fluid

components and change hoses. Epoxies often

have amines on the B (hardener) side. Polyureas

often have amines on the B (resin) side.

General Information

332094C 5

General Information

The Model 710 Dispense Valve is an On/Off valve

designed for a continuous flow of viscous material

through a dispense needle in automatic, semi-automatic

or manual applications. It is shipped complete with the

following:

• Model 710 Dispense Valve

• Two 3 foot (.9 m) sections of pneumatic air line

•SealKit

• Operating and Maintenance Manual

Safety Information

This product should be used only by employees who

have been given appropriate training and safety warn-

ings as set forth in this manual. Read completely before

operating.

NOTE: The minimum recommended pneumatic operat-

ing system pressure is 70 psi (4.8 bar) clean/dry air.

Illustration References

Throughout this manual you will find references by illus-

tration item number to the illustrations in the manual.

The references are indicated by parentheses around a

number such as: (7). Illustrations represent typical valve

configurations. The drawings for your exact model are

inserted at the back of the manual and include the part

numbers for ordering replacement parts.

General Accessories

Graco offers a full line of standard and custom accesso-

ries for your dispensing needs including:

• Valve Controllers

• Syringe Feed Systems

• Cartridge Retainers and Pressure Reservoirs

• Titan 200 High Pressure Cartridge Feed Systems

• Transfer Pump Feed Systems for 1, 5 and 55 gallon

containers

• Mounting Bases and Brackets

• Custom Needles and Needle Blocks

Consult your Dispensit dealer or the factory for details.

Do not exceed 100 psi (6.9 bar) pressure on the oper-

ating system. Do not exceed 1200 psi (82.7 bar)

material inlet pressure. Higher pressures may cause

serious injury or equipment damage.

Setup

6332094C

Setup

NOTE: See Typical Installation diagram.

1. Perform Setup procedure for feed system

components. See feed system manual(s).

2. Place an in-line air pressure regulator, air-water

separator/filter, and shut-off/bleed valve between

the air supply and the control solenoids.

3. Connect each 1/4 in. outside diameter supplied air

line to the corresponding control solenoid. See Typ-

ical Feed System Components starting on page 7.

4. Connect chemical lines from feed system to

metering valve material inlets. See Typical Feed

System Components starting on page 7.

Typical Installation

FIG. 1

Metering Valve

Pump

Material Tank (optional)

Fluid Shut-Off Valve

Air Supply Air Shut-off and Bleed Valve

Air Pressure Regulator

User Supplied

Air-Water Separator/Filter

Control Solenoids

Setup

332094C 7

Typical Feed System Components

FIG. 2

DO NOT SERVICE WITHOUT

REMOVING AIR PRESSURE AND

WEARING SAFETY GLASSES.

WARNING

200

psi

20 oz Cartridge Feed

with Mounting Post

5 Gallon Pail Cover

with Diaphragm Pump

1 Gallon Ram

and Pump

5 Gallon Pail Cover

with Diaphragm

Pump and Agitator

5 Gallon Ram and

11:1 Transfer Pump

5 Gallon Pail Cover

with Diaphragm

Pump

5 Gallon Pail Cover

with 5:1 Transfer

Pump

Setup

8332094C

Typical Feed System Components (continued)

FIG. 3

psi

5 Gallon Tank with Diaphragm Pump and Stand 5 Gallon Tank with 5:1 Pump and Stand

10 Gallon Tank with Diaphragm Pump, Agitator,

Vacuum, and Stand

10 Gallon Tank with 5:1 Pump, Agitator, Vacuum,

and Stand

Description of Operation

332094C 9

Description of Operation

1. The normal “ready” state of the system is as follows:

• The material supply line is filled with dispens-

able material.

• The system has been purged, filling the valve

with material up to the Piston(4).

• The Piston (4) is seated in the Needle Seat (1).

2. The dispense cycle begins when the controller is

activated. Air at 70 psi (4.8 bar) enters the Open

port and raises the Piston (4) off the Needle Seat

(1).

3. Material flows through the Valve Body (5) and out

through the Needle Block (23). Volume can be var-

ied by changing the material pressure, needle size,

dispense speed and dispense time.

4. When the correct amount of material has been dis-

pensed, the controller relieves air from the Open

port and applies air to the Close port. The Piston (4)

seats back into the Needle Seat (1), sealing the

valve and ending the dispensing process. The sys-

tem is again in the normal “ready” state.

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