Graco 310552A Modular Applicator Assembly, Air-Operated Owner's Manual | Manualzz
INSTRUCTIONS-PARTS LIST
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warnings and information.
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310–552
Rev. A
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INSTRUCTIONS
AIR–OPERATED
Modular Applicator Assembly
138 bar, 13.8 MPa (2000 psi) Maximum Working Pressure
Part No. 918–541, Series A
7/16-20” Port, Modular Applicator Assembly,
One Valve
The 7/16-20” port modular applicator assembly controls material flow of adhesives, sealants, and other
materials that are compatible with the wetted parts of
the applicator.
Table of Contents
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . . . . 12
Graco Phone Number . . . . . . . . . . . . . . . . . . . . . . . . . . 12
GRACO INC.
47700 HALYARD DRIVE PLYMOUTH MI 48170–2412
http://www.graco.com
COPYRIGHT 1997, GRACO INC.
Graco Inc. is registered to I.S. EN ISO 9001
Warnings
Warning Symbol
Caution Symbol
WARNING
CAUTION
This symbol alerts you to the possibility of serious
injury or death if you do not follow the instructions.
This symbol alerts you to the possibility of damage to
or destruction of equipment if you do not follow the
instructions.
WARNING
EQUIPMENT MISUSE HAZARD
INSTRUCTIONS
Equipment misuse can cause the equipment to rupture, malfunction, or start unexpectedly and
result in serious injury.
D This equipment is for professional use only.
D Read all instruction manuals, warnings, tags, and labels before operating the equipment.
D Use the equipment only for its intended purpose. If you are uncertain about usage, call Graco
Technical Assistance at 313–416–3425.
D Do not alter or modify this equipment. Use only genuine Graco parts and accessories.
D Check the equipment daily. Repair or replace worn or damaged parts immediately.
D Do not exceed the maximum fluid working pressure of 13.8 MPa (10 bar, 2000 psi) to the
applicator assembly or manifold.
D Never exceed the recommended working pressure or the maximum air inlet pressure stated on
your pump or in the Technical Data on page 11.
D Be sure that all spray/dispensing equipment and accessories are rated to withstand the maximum working pressure of the pump. Do not exceed the maximum working pressure of any
component or accessory used in the system.
D Route hoses away from traffic areas, sharp edges, moving parts, and hot surfaces.
D Do not expose Graco standard hoses to temperatures above 180_F (82_C) or below –40_F
(–40_C).
D Do not use the hoses to pull the equipment.
D Use only fluids and solvents that are compatible with the equipment wetted parts. See the
Technical Data sections of all the equipment manuals. Read the fluid manufacturer’s warnings.
D Always wear protective eyewear, gloves, clothing, and respirator as recommended by the fluid
and solvent manufacturers.
D Wear hearing protection when operating this equipment.
D Comply with all applicable local, state and national fire, electrical and other safety regulations.
2
310–552
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 or explosion and serious injury.
Ground the equipment and the object being sprayed. See Grounding on page 5.
Do not use this equipment with flammable liquids.
Keep the dispense area free of debris, including solvent, rags, and gasoline.
If there is any static sparking or you feel an electric shock while using the equipment, stop dispensing immediately. Do not use the equipment until you have identified and corrected the
problem.
Before operating the equipment, extinguish all open flames or pilot lights in the dispense area.
Do not smoke in the dispensing area.
Keep liquids away from the electrical components
Disconnect electrical power at the main switch before servicing the equipment.
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.
Provide fresh air ventilation to avoid the buildup of vapors from the fluid being dispensed.
Know the specific hazards of the fluid you are using.
Store hazardous fluid in an approved container. Dispose of hazardous fluid according to all
local, state and national guidelines.
Always wear protective eyewear, gloves, clothing and respirator as recommended by the fluid
and solvent manufacturer.
Avoid exposure to heated material fumes.
310–552 3
WARNING
INJECTION HAZARD
Spray from the valve assembly, hose leaks, or ruptured components can inject fluid into your body
and cause extremely serious injury, including the need for amputation. Fluid splashed in the eyes
or on the skin can also cause serious injury.
Fluid injected into the skin might look like just a cut, but it is a serious injury. Get immediate
medical attention.
Do not point the valve assembly at anyone or at any part of the body.
Do not put hand or fingers over the front of the valve assembly.
Do not stop or deflect fluid leaks with your hand, body, glove, or rag.
Follow the Pressure Relief Procedure on page 6 whenever you are instructed to: relieve
pressure; stop dispensing; clean, check, or service the equipment; or install or clean a tip or
nozzle.
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.
Always wear eye protection and protective clothing when installing, operating, or servicing this
dispensing equipment.
Do not remove or modify any part of the valve assembly; this can cause a malfunction and
result in serious bodily injury.
Use extreme caution when cleaning or changing tips. If the tip clogs while applying material,
Always follow the Pressure Relief Procedure on page 6, then remove the tip to clean it.
Never wipe off build-up around the tip or air cap until pressure is fully relieved.
4
310–552
Setup
Ground the System
WARNING
FIRE AND EXPLOSION HAZARD
To reduce the risk of a fire, explosion,
and serious injury, proper electrical
grounding of every part of your system is
essential. Read the warning section,
FIRE AND EXPLOSION HAZARD, on
page 3 and follow the grounding
instructions below.
Installation
NOTE: Read this manual thoroughly before installing
the modular applicator.
The modular applicator assembly has four untapped
mounting holes, making it ideal for use in robotic
equipment or multiple manifold high production operations.
Refer to the Parts information on page 9 while performing the following procedure to install the modular
applicator.
The following grounding instructions are minimum
requirements for a basic dispensing system. Your
system may include other equipment or objects which
must be grounded. Check your local electrical code for
detailed grounding instructions for your area and type
of equipment. Your system must be connected to a
true earth ground.
1. Inspect the modular applicator assembly for shipping damage. If damage is found, notify the carrier immediately.
1. Pump: connect a ground wire and clamp to a true
earth ground as shown in separate pump manual.
The .1875” diameter holes are suitable for locating
dowel pins, and the .265” diameter holes are intended for 1/4” mounting screws.
2. Applicator assembly: ground the applicator assembly by connecting it to a properly grounded
fluid hose and pump.
3. Fluid and air hoses: use only electrically conductive material and air hoses.
4. Dispense gun: obtain grounding through the connection of the hose, or cable.
5. Air compressor: follow the manufacturer’s recommendations.
6. Object being sprayed: according to local code.
7. Fluid supply container: according to local code.
2. Attach the modular applicator assembly to its
mounting fixture using any of the uptapped holes
in the service block.
CAUTION
Only use air fittings that are rated at a temperature
equal to or higher than the operating temperature of
your fluid dispensing system. Lower rated air fittings
could melt and cause damage to the modular applicator assembly.
3. Connect air supply lines to the 1/8” NPT (f) inlet air
ports (two places) on the modular applicator.
4. Connect fluid line to 1/4” NPT(f) fluid inlet in the
applicator service block.
5. Check each fitting for firmness to avoid pressure
leakage from the applicator (2).
310–552 5
Operation
Pressure Relief Procedure
WARNING
MATERIAL FLUID HAZARD
To reduce risk of injury, wear eye
protection, gloves and protective clothing
when installing, operating, or servicing
this dispensing system.
INJECTION HAZARD
The system pressure must be manually
relieved to prevent the system from
starting or spraying accidentally. Fluid
under high pressure can be injected
through the skin and cause serious
injury. To reduce the risk of an injury
from injection, splashing fluid, or moving
parts, follow the Pressure Relief
Procedure whenever you:
are instructed to relieve the pressure
stop spraying/dispensing
install or clean the nozzle
check or service any of the system
equipment
PRESSURIZED FLUID HAZARD
High pressures can cause serious personal injury. Be sure to open the valve
during system start-up to alleviate
pressure which might occur in the system due to material expansion.
This procedure describes how to relieve pressure from
the modular valve. See your supply unit or system
documentation for instructions on relieving pressure for
the entire system. Use this procedure whenever you
shut off the modular valve and before checking or
adjusting any part of the system, to reduce the risk of
serious injury.
1. Shut off the material supply.
2. Close all air bleed valves to shut off the air supply
to the applicator.
3. Actuate the applicator repeatedly until no fluid
flows. Have a container ready to catch the drainage from the applicator.
4. If the modular applicator nozzle or fluid hose is
completely clogged or if pressure has not been
fully relieved after following the precedings steps,
very slowly loosen the hose coupling and relieve
pressure gradually, then loosen completely. Now
clear the nozzle or hose.
Refer to page 9 for Parts information.
How the Modular Applicator Operates
The 7/16-20” modular applicator assembly uses the
air-opened, air-closed mode of operation. The two
1/8” NPT air ports control the movement of the air-operated needle piston inside the valve. The needle piston, which is either lifted or pushed down when air is
applied, controls material flow to and from the modular
applicator.
A spring inside the applicator forces the needle piston
down and stops material flow in the event there is a
loss of controlling air pressure.
Adjusting the Modular Applicator
The stroke adjust screw (10) and thread seal nut (11)
can be adjusted to set the movement of the needle
piston in the modular valve. If fluid begins to discharge, drip, string, or weep irregularly from the fluid
outlet port, the modular valve may require cleaning,
servicing, or replacement.
Refer to page 9 for Parts information.
A repair kit is available to service the modular valve.
See Parts on page 9 for information. For the best
results, replace the original parts with the new parts in
the repair kit.
Applicator Inspection Frequency
Inspect the applicator, material, and air hoses at least
once every two weeks specifically for leakage and
other visible damage.
6
310–552
Troubleshooting
Some solutions require disassembling the applicator. Always relieve system pressure before performing these procedures.
WARNING
To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow
the Pressure Relief Procedure (page 6).
Refer to the Parts information on page 9 for the parts that require service or replacement.
Problem
Cause(s)
Solution(s)
Applicator assembly fails to open
or close as required.
q
Actuating air line leaking, or is improperly
connected.
Check air line connections.
Material or debris in modular valve is blocking needle movement.
Check needle seat for materials or debris
impeding needle movement. Remove
impeding material.
Loose air connections.
Check air connections.
Worn o-rings.
Replace o-rings in valve bearing or between
valve assembly and service block.
Seal not installed correctly.
Check needle seal and replace
p
if necessary.
y
Air leaks from modular valve
Material leaks from modular
valve body
Seal is worn.
Service
Preparing to Service the Modular
Applicator
Perform this procedure before servicing the modular
valve.
Some fluid material in the applicator may thicken or
cure when cooled to room temperature, or when
exposed to air. If you are working with such a fluid
material, service the applicator while the material is
uncured or at a temperature where it is soft enough to
work with.
1. Relieve the system pressure.
WARNING
To reduce the risk of serious injury, whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure (page 6).
2. Be sure material flow has been shut off.
3. Be sure system air has been shut off.
310–552 7
Service
Disassembly – Part No. 918–542, Series A
Refer to the Parts information on page 9 while performing the following procedure to disassemble the
modular valve.
1. Remove and keep warning tag (28, not shown) for
reattachment.
6. Remove spring (7). Unscrew and remove thread
seal nut (10) from stroke adjust screw (11).
7. Pull piston-needle assembly (9) out of fluid body
(8).
8. Remove o-ring (12) from piston-needle assembly
(9).
2. Unscrew and remove two cap screws (2) to remove modular valve assembly from the one-valve
service block.
9. Remove bearing retainer plate (13) and gasket
(14).
3. Remove three o-rings (3, two places, and 4) from
the mounting surface of the modular valve.
10. Unscrew and remove four flat head screws (9) and
needle seat (16) from fluid body (8).
11. Remove o-ring (17) from needle seat (16).
WARNING
To reduce the risk of serious injury, exercise caution when removing the modular valve cylinder,
which is spring–loaded and could project forcefully
through the air if not removed properly.
4. Unscrew four cap screws (5) evenly to loosen
valve cylinder (6) and relieve tension from in valve
spring (7).
5. Remove cap screws (5), and valve cylinder (6) and
its connected parts from valve fluid body (8) and
piston-needle assembly (9).
8
310–552
12. Extract seal retainer (18) from fluid body (8).
13. Extract needle seal (19) from fluid body (8).
14. Extract bearing (20) and its associated o-rings
from fluid body (8).
15. Remove o-ring (21) and o-ring (22) from bearing
(20).
Parts
Part No. 918–541, 7/16–20” Modular Applicator Assembly
Ref.
No.
Part No.
Description
1
2
––
617675
C20005
918542
3n
4n
5
6{
7
8{
9n
10
11
12n
13{
14n
15
C20080
C20131
C19965
BLOCK, SERVICE, one valve
SCREW, SHC, #10-32 x 1.00
VALVE ASSEMBLY, modular
Includes items 3–22
. O-RING, -010 Viton
. O-RING, -013 Viton
. SCREW, SHC, #6-32 x 1.25
. CYLINDER, VAVLE, modular
. SPRING, valve modular
. BODY, fluid, modular valve
. PISTON-NEEDLE assembly
. NUT, thread seal, 5/16-24
. SCREW, stroke adjust
. O-RING, -016 Viton
. PLATE, retainer, bearing
. GASKET, retainer plate
. SCREW, SKT FH, #8-32 x 0.375
617683
617685
617682
617681
C20169
617678
C38384
Qty.
1
2
1
2
1
4
1
1
1
1
1
1
1
1
1
4
Ref.
No.
Part No.
Description
16
17n
18
19n
617680
C20115
617687
617686
.
.
.
.
20n
21n
22n
––*
––*
25Y*
617684
C20086
C20291
C19254
C19252
172479
Qty.
SEAT, NEEDLE, modular valve
O-RING, -012 Viton
RETAINER, seal, modular valve
SEAL, needle, TFE,
0.093 inside diameter
. BEARING, valve, modular
. O-RING, -011 Viton
. O-RING, -008 Viton
PLUG, hex skt, 1/4 npt
PLUG, hex skt, 1/8 npt
TAG, warning/instruction
1
1
1
1
1
1
1
1
1
1
n These parts are included in Repair Kit 918543, which may
be purchased separately.
{
This part is not offered for sale.
Y Replacement Danger and Warning labels, tags and cards
are available at no cost.
*
These items are not shown on the parts illustration.
14
16
17
13
7
2
11
6
15
18
22
5
20
19
21
8
3
4
10
9
12
3
1
7605A
310–552 9
Service
Assembly – Part No. 918–542, Series A
Refer to the Parts information on page 9 while performing the following procedure to assemble the modular valve.
NOTE: Repair Kit 918–543 is available to service the
modular valve assembly. For the best results, replace
the original parts with the new parts in the repair kit.
Prior to installation, lubricate all seals and o-rings with
PARKER O LUBE or an equivalent lubricant. Check
with the material supplier for a compatible lubricant.
1. Be sure all parts are free of solid material residue.
2. Press needle seal (19) carefully into fluid body (8).
3. Install o-ring (21) onto, and o–ring (22) into bearing
(20).
4. Push bearing (20) and its associated o-rings into
fluid body (8).
5. Install o-ring (17) onto needle seat (16).
6. Install seal retainer (18) into fluid body (8).
7. Assemble needle seat (16) into fluid body (8) and
secure with four flat head screws (15).
8. Install the o-ring (12) onto piston-needle assembly
(9).
9. Place gasket (14) and retainer plate (13) in position on top of fluid body (8).
10. Push piston-needle assembly (9) carefully through
retainer (13), gasket (14), bearing (20), and needle
seal (19).
11. Assemble stroke adjust screw (11) and thread seal
nut (10) to valve cylinder (6).
12. Position spring (7) on top of piston-needle assembly (9) and properly align air passage hole in retainer plate (13) with air hole in fluid body (8).
WARNING
To reduce the risk of serious injury, exercise caution when installing the modular valve cylinder,
which is spring-loaded and could project forcefully
through the air if not installed properly.
13. Install valve cylinder (6) and its associated parts
onto the piston-needle (9). Secure the cylinder to
fluid body (8) with four cap screws (5), turning the
screws evenly to control compression of spring (7).
Do not tighten the screws. Leave the screws and
valve cyclinder loosely assembled.
14. To assure proper valve component alignment,
place the loosely assembled valve onto a true flat
surface with the mounting surfaces of fluid body
(8), retainer plate (13), and valve cylinder (6) on
the true surface. Hold the valve assembly firmly
against the true surface while tightening the four
cap screws (5).
15. Position the three o-rings (3, two places, and 4)
into grooves in the mounting surface of fluid body
(8) and valve cylinder (6).
16. Position modular valve assembly and o–rings (3
and 4) on mounting surface of service block (1).
Assemble modular valve to service block (1) with
two cap screws (2).
17. Reattach warning tag (28, not shown).
10
310–552
Dimensions
2.12
1.50
5/16–24 UNF STROKE ADJUST
2X .265 DIA.
CLOSE
1/8 NPT
AIR
PORTS
4.12 MAX
OPEN
2X .1875 DIA.
1.00
3.65
1.22
1.50
.062 DIA. FLUID OUTLET
1.18
1/4 NPT
FLUID
INLET
PORT
7/16–20 UNF
1.68
Technical Data
Maximum operating air pressure
1.03 MPa (10.3 bar, 150 psi)
Maximum fluid working pressure
13.8 MPa (138 bar, 2000 psi)
Maximum operating temperature
400_F (204_ C)
Applicator weight
0.70 lbs. (0.32 kg)
Wetted parts
Aluminum, carbon steel, tungsten carbide, chrome plate,
Viton rubber, TFE
Vitonr is a registered trademark of the DuPont Company.
PARKER O LUBE is a trademark of Parker Seal.
310–552 11
Graco Standard Warranty
Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from
defects in material and workmanship on the date of sale by an authorized Graco distributor to the original purchaser for use. With the
exception of any special, extended, or limited warranty published by Graco, Graco will, for a period of twelve months from the date of
sale, repair or replace any part of the equipment determined by Graco to be defective. This warranty applies only when the equipment
is installed, operated and maintained in accordance with Graco’s written recommendations.
This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by
faulty installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution of non–Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility of
Graco equipment with structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture,
installation, operation or maintenance of structures, accessories, equipment or materials not supplied by Graco.
This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for
verification of the claimed defect. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts. The
equipment will be returned to the original purchaser transportation prepaid. If inspection of the equipment does not disclose any defect
in material or workmanship, repairs will be made at a reasonable charge, which charges may include the costs of parts, labor, and
transportation.
THIS WARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT
NOT LIMITED TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.
Graco’s sole obligation and buyer’s sole remedy for any breach of warranty shall be as set forth above. The buyer agrees that no other
remedy (including, but not limited to, incidental or consequential damages for lost profits, lost sales, injury to person or property, or any
other incidental or consequential loss) shall be available. Any action for breach of warranty must be brought within two (2) years of the
date of sale.
GRACO MAKES NO WARRANTY, AND DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE, IN CONNECTION WITH ACCESSORIES, EQUIPMENT, MATERIALS OR COMPONENTS SOLD
BUT NOT MANUFACTURED BY GRACO. These items sold, but not manufactured by Graco (such as electric motors, switches,
hose, etc.), are subject to the warranty, if any, of their manufacturer. Graco will provide purchaser with reasonable assistance in making any claim for breach of these warranties.
In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from Graco supplying equipment
hereunder, or the furnishing, performance, or use of any products or other goods sold hereto, whether due to a breach of contract,
breach of warranty, the negligence of Graco, or otherwise.
FOR GRACO CANADA CUSTOMERS
The parties acknowledge that they have required that the present document, as well as all documents, notices and legal proceedings
entered into, given or instituted pursuant hereto or relating directly or indirectly hereto, be drawn up in English. Les parties reconnaissent avoir convenu que la rédaction du présente document sera en Anglais, ainsi que tous documents, avis et procédures judiciaires
exécutés, donnés ou intentés à la suite de ou en rapport, directement ou indirectement, avec les procedures concernées.
Graco Phone Number
TO PLACE AN ORDER, contact your Graco distributor, or call this number to identify the distributor closest to you:
1–800–367–4023, FAX: 612–623–6580.
FOR TECHNICAL ASSISTANCE, service repair information or assistance regarding the application of this Graco
equipment, call Graco in Plymouth, Michigan: 313–416–3425.
All information, illustrations and specifications in this document are based on the latest product information available at the time
of publication. The right is reserved to make changes at any time without notice.
Sales Offices Worldwide
GRACO INC.
47700 HALYARD DRIVE PLYMOUTH MI 48170–2412
http://www.graco.com
PRINTED IN U.S.A. 310–552 October 1997
12
310–552
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