Graco Dispensit 710 User manual

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332094C
EN
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.
2.
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
F
200
psi
0
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
R
0
12
8
4
psi
30
22
19
15
26
R
0
12
8
4
psi
30
22
19
15
26
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.