Graco Inc 243482, 965786, 965767, 965768, 965766 User Manual
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Instructions–Parts List
AIR OPERATED, SINGLE COMPONENT DISPENSE VALVE
1K Ultra–Litet
For dispensing a wide variety of single component sealants and adhesives.
4000 psi (28 MPa, 276 bar) Maximum Fluid Working Pressure
120 psi (0.84 MPa, 8.4 bar) Maximum Air Inlet Pressure
See page 2 for Table of Contents
Part No. 965766
Stainless Steel Wetted Parts, Machine
Mount Valve
Part No. 965767
Aluminum Wetted Parts, Hand–held
Valve with internal air switch
Part No. 965768
Aluminum Wetted Parts, Hand–held
Valve with electric switch for remote
operation
Part No. 965786
Aluminum Wetted Parts, Automatic
Machine Mount Valve
308876K
Part No. 243482
Stainless Steel Wetted Parts,
Precision Swirl Orbiter Mounted with
Nozzle Accessory
Part No. 243666
Stainless Steel Wetted Parts,
PrecisionFloR Control Valve
Machine Mount Valve
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
8370A
Model 965768 shown
Table of Contents
Symbols
Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Features 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation/Maintenance 8. . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessories 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Standard Warranty 30. . . . . . . . . . . . . . . . . . . . . .
Graco Information 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
WARNING
SKIN INJECTION HAZARD
Spray from the valve, 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.
Warning Symbol
WARNING
This symbol alerts you to the possibility of serious
injury or death if you do not follow the instructions.
Caution Symbol
CAUTION
This symbol alerts you to the possibility of damage to
or destruction of equipment if you do not follow the
instructions.
D Fluid injected into the skin might look like just a cut, but it is a serious injury. Get immediate surgi-
cal treatment.
D Do not point the valve at anyone or at any part of the body.
D Do not stop or deflect leaks with your hand, body, glove or rag.
D Be sure the valve trigger safety operates before dispensing.
D Lock the valve trigger safety when you stop dispensing.
D If the nozzle clogs while dispensing, fully release the trigger immediately.
D Follow the Pressure Relief Procedure on page 8 whenever you: are instructed to relieve pres-
sure; stop dispensing; clean, check, or service the equipment; and install or clean the nozzle.
D Tighten all fluid connections before operating the equipment.
D Check the hoses, tubes, and couplings daily. Replace worn, damaged, or loose parts immediately.
Permanently coupled hoses cannot be repaired; replace the entire hose.
D Use only Graco approved hoses. Do not remove any spring guard that is used to help protect the
hose from rupture caused by kinks or bends near the couplings.
2 308876
INSTRUCTIONS
WARNING
EQUIPMENT MISUSE HAZARD
Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury.
D This equipment is for professional use only.
D Read all instruction manuals, tags, and labels before operating the equipment.
D Use the equipment only for its intended purpose. If you are uncertain about usage, call your Graco
distributor.
D Do not alter or modify this equipment. Use only genuine Graco parts and accessories.
D Check equipment daily. Repair or replace worn or damaged parts immediately.
D Do not exceed the maximum working pressure stated on the equipment or in the Technical Data
for your equipment. Do not exceed the maximum working pressure of the lowest rated component
in your system.
D Use fluids and solvents which are compatible with the equipment wetted parts. Refer to the Tech-
nical Data section of all equipment manuals. Read the fluid and solvent manufacturer’s warnings.
D Do not use hoses to pull equipment.
D Route hoses away from 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).
D Comply with all applicable local, state, and national fire, electrical, and safety regulations.
D Never use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or
fluids containing such solvents in this equipment. Such use could result in a serious chemical
reaction, with the possibility of explosion, which could cause death, serious injury, and/or substantial property damage.
3308876
WARNING
FIRE AND EXPLOSION HAZARD
Improper grounding, poor ventilation, open flames or sparks can cause a hazardous condition and
result in a fire or explosion and serious injury.
D Ground the equipment and the object being sprayed. Refer to Grounding on page 6.
D If there is any static sparking or you feel an electric shock while using this equipment, stop dis-
pensing immediately. Do not use the equipment until you identify and correct the problem.
D Provide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid
being dispensed.
D Keep the dispense area free of debris, including solvent, rags, and gasoline.
D Extinguish all open flames or pilot lights in the dispense area.
D Do not smoke in the dispense area.
D Do not turn on or off any light switch in the dispense area while operating or if fumes are present.
D Do not operate a gasoline engine in the dispense area.
TOXIC FLUID HAZARD
Hazardous fluid or toxic fumes can cause serious injury or death if splashed in the eyes or on the skin,
inhaled, or swallowed.
D Know the specific hazards of the fluid you are using.
D Store hazardous fluid in an approved container. Dispose of hazardous fluid according to all local,
state and national guidelines.
D Always wear protective eyewear, gloves, clothing and respirator as recommended by the fluid and
solvent manufacturer.
4 308876
Features
A
D Adjustable forward travel to reduce material surge when
valve opens
D Severe-Dutyt needle and seat for longer operating life
D Lubricated packings for longer seal life
D Lightweight construction reduces operator/machinery
fatigue
4 Control Configurations
1. 1/8 npt(f) ported manifold block
2. Direct solenoid mount with speed control
3. Handle kit with 4-way air valve
4. Handle kit with electric switch
Accessory flow control fittings
to adjust open/close speed.
D Compact size for small X–Y tables, working areas, and
robots
D Handle kit provides easy conversion from automatic to
manual usage
D Stainless steel housing to handle most materials
Travel adjustment (Model 965766,
965767, 965768, and 965786 only)
Replaceable nylon bearings
Shaft is free to align
Aluminum or stainless wetted housings
Snuff back restrictor ring (13) is removable
for high flow applications.
Divorced air section
Hard chrome/stainless steel shaft
Urethane u-cup secondary seals
Self centering plastic bearing
Proven primary seals
Hardened stainless steel needles
Reversible carbide seat for severe duty
Fig. 1
8374B
8374
5308876
Installation
A
NOTES:
D Reference numbers and letters in parentheses in
the text refer to the callouts in the figures and
drawings.
D Accessories are available from your Graco
representative. If you supply your own accessories,
be sure they are adequately sized and
pressure-rated to meet the system’s requirements.
Grounding
WARNING
FIRE AND EXPLOSION HAZARD
To reduce the risk of 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 4, and
follow the grounding instructions below.
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.
D Pump: ground the pump by connecting ground wire
and clamp as described in your separate pump
instruction manual.
D Fluid supply container: ground according to your
local code.
D Flammable liquids in the spray area: must be in
approved, grounded containers. Do not store more
than the quantity needed for one shift.
D All solvent pails used when flushing: ground
according to local code. Use only metal pails, which
are conductive. Do not place the pail on a
non-conductive surface, such as paper or
cardboard, which interrupts the grounding
continuity.
D To maintain grounding continuity when flushing or
relieving pressure, hold a metal part of the valve
firmly to the side of a grounded metal pail, then
trigger the valve.
How to Use the Valve Trigger Safety
WARNING
SKIN INJECTION HAZARD
To prevent accidental triggering of the
gun and reduce the risk of a serious inju-
ry, including fluid injection or splashing in
the eyes or on the skin, lock the gun trigger safety
when you stop dispensing.
1. If you are using one of the hand-held versions of
the valve, lock the valve trigger safety by turning
the latch to a right angle with the gun body. See
Fig. 2.
D Air compressors and hydraulic power supplies:
ground the equipment according to the
manufacturer’s recommendations.
D Fluid hoses: use only grounded fluid hoses with a
maximum of 500 feet (150 m) combined hose
length to ensure grounding continuity. Check the
electrical resistance of your fluid hoses at least
once a week. If your hose does not have a tag on it
which specifies the maximum electrical resistance,
contact the hose supplier or manufacturer for the
maximum electrical resistance limits, replace the
hose immediately.
D Dispensing valve: ground the valve by connecting it
to a properly grounded fluid hose and pump.
6 308876
2. To unlock the valve trigger safety, push the latch
out and turn it parallel with the gun body.
Locked Unlocked
Fig. 2
8459
Installation
Connections
D The fluid inlet is 1/4 npt(f).
D The fluid outlet is 1/4 npt(f) or 3/4–16 unf(m).
D Air inlets are 1/8 npt(f).
D See Accessories, page 25, to order air control
valves and tubing.
Electric Switch Hand Held Valve
Install a remote 4-way air control valve to operate the
valve. Connect an OPEN air signal air line to the 1/8
npt(f) port on the side of the valve. Connect a CLOSE
air signal air line to the 1/8 npt(f) port on the opposite
side of the valve. Wire the normally open valve switch
to the system control.
Machine Mount Valve
Install a remote 4-way air control valve to operate the
valve. Connect an open air signal air line to the 1/8
npt(f) OPEN port. Connect a close air signal air line to
the 1/8 npt(f) CLOSE port.
Air Switch Hand Held Valve
This valve has a single air inlet and an internal 4-way
spool valve, which directly operates the air piston.
Connect the air line to the 1/8 npt(f) air inlet.
1
Solder to terminals in cable connectors as shown in Detail A.
2
Normally open, momentary contact switch.
3
Ground connection.
1
Fig. 3
Detail A
2
3
Electric Switch Hand Held Valve shown
8370A
7308876
Operation
WARNING
COMPONENT RUPTURE HAZARD
To reduce the risk of over-pressurization,
which can cause component rupture and
serious injury, never exceed 3000 psi (21
MPa, 207 bar) fluid pressure, or 120 psi (0.84 MPa,
8.4 bar) air pressure to the valve.
Electric Switch Hand Held Valve
D Be sure the air supply lines are connected correctly
to the OPEN and CLOSE valve air ports.
D To open or close the valve and maintain the open or
closed status, a minimum of 40 psi (280 kPa, 2.8
bar) air pressure must be supplied and maintained
at the OPEN or CLOSE port.
Pressure Relief Procedure
WARNING
SKIN 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:
D are instructed to relieve the pressure
D stop dispensing
D check or service any of the system equipment
D install or clean the nozzle
1. Shut off the air to the dispense valve, if applicable.
2. Shut off the air to the supply pumps.
3. Close the bleed-type master air valve (required in
your system).
4. Hold a metal part of the valve firmly to the side of a
grounded metal pail, and trigger the dispense
valve to relieve pressure.
5. Open the fluid drain valve (required in your
system), having a grounded metal container ready
to catch the drainage.
D The trigger only activates the electrical switch in the
handle, which turns the remote solenoid on and off.
D Trigger the gun to turn the solenoid on. Release the
trigger to turn the solenoid off.
Machine Mount Valve
D Be sure the air supply lines are connected correctly
to the OPEN and CLOSE valve air ports.
D To open or close the valve and maintain the open or
closed status, a minimum of 40 psi (280 kPa, 2.8
bar) air pressure must be supplied and maintained
at the OPEN or CLOSE port.
To open the valve:
1. Apply air pressure to the OPEN air port on the
valve, and remove air pressure from the CLOSE
air port on the valve.
2. Maintain air pressure on the OPEN air port to keep
the valve open.
To close the valve:
1. Apply air pressure to the CLOSE air port on the
valve, and remove air pressure from the OPEN air
port on the valve.
2. Maintain air pressure to the CLOSE air port to
keep the valve closed.
6. Leave the fluid drain valve open until you are ready
to dispense again.
If you suspect that the dispense needle or hose is
completely clogged, or that pressure has not been fully
relieved after following the steps above, very slowly
loosen the needle retaining nut or hose end coupling
and relieve pressure gradually, then loosen completely.
Now clear the needle or hose.
8 308876
Operation
Air Switch Hand Held Valve
The valve operation is such that there are only two
valve conditions: either fully open or fully closed.
The valve is opened and closed by the internal air
control valve. Trigger the gun to open the valve.
Release the trigger to close the valve.
Shaft Stroke Adjustment (Models 965766,
965767, 965768, and 965786 only)
Adjust the shaft stroke to balance the valve between
“snuff-back” and “push-out”.
D A long stroke will give maximum snuff-back but it
may cause push-out when the valve opens.
D Shortening the stroke of the shaft will minimize the
material pushed out when the valve opens and will
also increase the material back pressure through
the valve.
To adjust the shaft stroke:
1. Loosen the hex nut (44) from the adjustment nut
(43).
D The valve is at full stroke when the hex nut
(44) is at the end of the adjustment shaft (42).
D Adjusting the nut (44) on the shaft (42)
towards the valve, or clockwise, will reduce the
stroke length.
D Adjusting the nut away from the valve, or
counterclockwise, will lengthen the stroke.
3. Tighten the hex nut (44) to the adjustment nut (43)
to set the adjustment.
42
44
Shorten Lengthen
43
2. Adjust the nut (44) along the adjustment shaft (42)
to the desired position.
Maintenance
Preventative Maintenance
There is a grease filled secondary seal/bearing area on
the valve shaft. Every 10,000 cycles, or twice each
month, new grease should be flushed across this area.
Each valve has two flush grease fittings. A small
grease gun is provided with each valve.
Fig. 4
To grease the valve:
1. Remove the grease fitting from one side of the
gun.
2. Pump grease (Part No. 115982) across the valve
until clear grease comes out of the other side.
3. Reinstall the grease fitting.
8460
9308876
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