Graco 309376J User Manual

Instructions–Parts List

EnDuret Automatic

309376J

Dispense Valves

Air-operated dispense valves used for sealant and adhesive materials.

3500 psi (24.10 MPa, 241 bar) Maximum Dynamic Discharge Fluid Working Outlet Pressure 5000 psi (34.5 MPa, 345 bar) Maximum Static Working Pressure 120 psi (.83 MPa, 8.3 bar) Maximum Air Pressure

Important Safety Instructions

Read all warnings and instructions in this manual. Save these instructions.

TI1377A

06540A

Table of Contents

List of Models 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Warnings 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maintenance 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Service 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Accessories 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Dimensions 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Technical Data 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Wiring Diagram 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Graco Standard Warranty 36. . . . . . . . . . . . . . . . . . . . . .

Graco Information 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 309376

Basic Valve Part No.

244535 244910 Valve, ambient or water con-

244907 244908 Valve, 120 Volt E-Heat

244937 244951 Valve, 230 Volt E-Heat

Complete Valve Part No.

244961 Valve, 120 Volt E-Heat

244962 Valve, 230 Volt E-Heat

244909 Valve, 230 Volt E-Heat

297261 Complete Valve, 240 Volt E–

245184 Valve, 120 Volt E-Heat

Description (Replaces  )

ditioned. Replaces C27340 hard seat and 918512 soft seat snuff-back, if application is under 95 C (200 F).

Replaces valve 194485. Any heated PrecisionFlo before XL (July 2001) if application is under 95 C (200 F).

Replaces 243694 hard seat and 243696 soft seat snuffback valves. Any Therm-OFlow Plus (after July 2000) if application is under 95 C (200 F).

Replaces C34068 hard seat, 918483 soft seat snuff-back, any Therm-O-Flow before Therm-O-Flow Plus (July

2000) if application is 95 C (200 F) to 204 C (400 F).

Replaces 243694 hard seat and 243696 soft seat snuffback valves. Any Therm-OFlow Plus (after July 2000) if application is 95 C (200 F) to 204 C (400 F).

Heat; Swirl Equipped

Replaces valve 243695 hard seat with 1/2” npt (m) outlet. Any Therm-O-Flow before Therm-O-Flow Plus (July

2000) if application is 95 C (200 F) to 204 C (400 F).

Replaces C34079 hard seat with 1/2” npt (m) outlet. Any Therm-O-Flow Plus (after July 2000) if application is 95 C (200 F) to 204 C (400 F).

Models

Maximum Fluid Temperature Rating C (F)

95 C (200 F) Nonpowered

95 C (200 F) 120 VAC

95 C (200 F) 230 VAC

204 C (400 F) 120 VAC

204 C (400 F) 230 VAC

204 C (400 F) 240 VAC

204 C (400 F) 230 VAC

204 C (400 F) 120 VAC

Heater Voltage

Pin Connector Wattage

ambient or water circulation for temperature conditioning

6 Pin round

8 Pin square

6 Pin round

8 Pin square

6 Pin round

150

200

150

200

150

200

Valve Outlet Connection

5/8–18 male thread.

Retainer nut with 1/8 npt(f)

5/8-18 male thread.

Retainer nut with 1/8 npt(f)

5/8-18 male thread.

Retainer nut with 1/8 npt(f)

5/8-18 male thread.

Retainer nut with 1/8 npt(f)

5/8-18 male thread.

Retainer nut with 1/8 npt(f)

5/8-18 male thread with swirl adapter

1/2 npt (m) 23

1/2 npt (m) 27

Parts Page

309376 3

Warnings

The following warnings are for the safe setup, use, grounding, maintenance, and repair of this equipment. The exclamation point symbol alerts you to a general warning and the hazard symbols refer to procedure–specific risks. Refer back to these warnings. Additional, product–specific warnings may be found throughout the body of this manual where applicable.

WARNING

EQUIPMENT MISUSE HAZARD

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

INSTRUCTIONS

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, call your Graco distribu-

tor.

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 air working pressure of 1 MPa (8.3 bar, 120 psi) to the applicator.

D Do not exceed the maximum fluid working pressure of 24 MPa (241 bar, 3500 psi) to the

applicator 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 34.

D Be sure that all spray/dispensing equipment and accessories are rated to withstand the maxi-

mum 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). Do not expose Graco electrically heated hoses to temperatures above 400° F (222° 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.

4 309376

WARNING

HOT SURFACE AND FLUID HAZARD

Heated fluid can cause severe burns and can cause equipment surfaces to become very hot.

D Wear protective gloves and clothing when operating this equipment in a heated system.

D Do not touch the metal heat sink when the surface is hot.

D Allow the equipment to cool thoroughly before servicing.

Some heated systems are designed to dispense Polyurethane (PUR) heated materials. PUR systems are supplied with ventilation hoods, and require proper ventilation and specially designed system components.

SKIN INJECTION HAZARD

Spray from the applicator, 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.

D Fluid injected into the skin might look like just a cut, but it is a serious injury. Get immediate

surgical treatment.

D Do not point the applicator at anyone or at any part of the body.

D Do not put hand or fingers over the front of the applicator.

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

D Follow the Pressure Relief Procedure on page 14 whenever you are instructed to: relieve

pressure; stop dispensing; clean, check, or service the equipment; or install or clean a tip or nozzle.

D Tighten all the fluid connections before operating the equipment.

D Check the hoses, tubes, and couplings daily. Replace worn, damaged, or loose parts immedi-

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

D ALWAYS wear eye protection and protective clothing when installing, operating, or servicing this

dispensing equipment.

D Do not remove or modify any part of the applicator; this can cause a malfunction and result in

serious bodily injury.

D Use extreme caution when cleaning or changing tips. If the tip clogs while applying material,

ALWAYS follow the Pressure Relief Procedure on page 14, then remove the tip to clean it.

D NEVER wipe off build-up around the tip or air cap until pressure is fully relieved.

309376 5

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.

D Ground the equipment and the object being sprayed. The Heated Automatic Dispense Valve is

grounded to truth earth ground inside the electrical control panel. See Grounding on page 9.

D Ground the equipment and the object being sprayed, and all other electrically conductive

objects in the dispense area. Proper grounding dissipates static electricity generated in the equipment. See Grounding on page 9.

D Do not use this equipment with flammable liquids.

D Keep the dispense area free of debris, including solvent, rags, and gasoline.

D If there is any static sparking or you feel an electric shock while using the equipment, stop dis-

pensing immediately. Do not use the equipment until you have identified and corrected the problem.

D Make sure all electrical work is performed by a qualified electrician only.

D Have any checks, installation, or service to electrical equipment performed by a qualified electri-

cian only.

D Make sure all electrical equipment is installed and operated in compliance with applicable

codes.

D Make sure power is disconnected when servicing and repairing equipment.

D Before operating the equipment, extinguish all open flames or pilot lights in the dispense area.

D Do not smoke in the dispensing area.

D Keep liquids away from the electrical components

D Disconnect electrical power at the main switch before servicing the equipment.

D Never exceed maximum wattage of the supply unit.

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.

D Provide fresh air ventilation to avoid the buildup of vapors from the fluid being dispensed.

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.

D Avoid exposure to heated material fumes.

6 309376

Installation

Install the automatic applicator as follows:

D mount the automatic dispense valve D attach dispense tip or nozzle D connect the air lines D connect material hose D if heated, connect the electrical cable D if temperature conditioned, connect the water

circulation

D make sure the automatic dispense valve is

grounded

Fluid Inlet

Water Circulation Ports

Mount the Automatic Dispense Valve

Mount the automatic dispense valve to the mounting bracket on a stationary support or robotic arm (Fig. 1), using two M6x1.0 socket head screws and two flat washers. If your application is heated, be sure to position the insulation block between the dispense valve and the mounting bracket, (Fig. 2). Refer to the dimensions on page 32.

Mountin Holes

Ambient or temperature conditioned model shown

Fig. 1

TI1377A

309376 7

Installation

Connect Air Lines to Dispense Valve

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 automatic dispense valve.

These valves are air to open and air to close with a spring to bias them closed. Use a 4–way exhausting solenoid to operate these valves.

Be sure to connect the appropriate air lines to the appropriate ports (Fig. 2), and securely connect air lines to dispense valve air ports. See page 32.

Open and Close ports are on this side.

Connect Material Hose to Dispense Valve

Securely connect the material hose to the dispense valve material inlet port. See Fig. 2.

Connect Electrical Cable to Electrically Heated Dispense Valves

Connect electrical cable plug from your Therm-O-Flow, Therm-O-Flow Plus, or PrecisionFlo hose or control. A six-pin round connector is used on 120 volt valves and an eight-pin square connector is used on 240 volt valves.

Fig. 2

Fluid Inlet

Temperature insulation spacer

240 volt heated model shown

8 309376

Grounding

D The power source conduit is not an ad-

D A qualified electrician must complete

Installation

WARNING

FIRE, EXPLOSION, AND ELECTRIC SHOCK HAZARD

To reduce the risk of fire, explosion, or electric shock:

equate ground for the system. The unit must be grounded to either the building ground or a true earth ground.

all grounding and wiring connections and check the resistance.

Fig. 4

5412

Ground lead coming from contact 8 is fastened to the valve body

240 Volt models

TI0305

D Refer to your local code for the requirements for

a “true earth ground” in your area.

D Also read and follow the warnings on page 6.

Electrically Heated Models.

Ground the automatic dispense valve:

1. Connect the connector from a heated hose to the receptacle on the dispense valve.

Ground lead coming from pin E is fastened to the valve body.

Heater cartridge

RTD sensor

120 Volt models

Fig. 3

2. Connect the electrical cable to the electrical control panel.

3. Verify that socket contact E on six pin models (see Fig. 5) or contact eight on eight pin models (see Fig. 4) , inside control panel receptacle, is connected to true earth ground.

See page 35 for schematics.

Snuff-Back

Snuff-back is created when the needle is pulled back through a restrictive ring before it closes against the carbide seat.

For maximum snuff-back, leave the ring in place. For maximum flow with less snuff-back, remove the ring. For additional snuff-back, use a quick exhaust valve (104661) on the “open” air port.

Nozzle selection and gun movement also effect fluid cut-off characteristics.

309376 9

Installation

Connecting the Electrical Cable from a Therm-O-Flow Plus Heated Hose

1. Wrap the hose cable around the hose one time. Connect the electrical cable from the hose to the valve cable; lock the metal clip on the top of the connector. See Fig. 5.

2. Place the flat side of the cable connection against the hose, making sure the metal clip faces away from the hose. This will prevent damage to the hose from the clip rubbing against it. See Fig. 6.

3. Secure the cable connector to the hose with heavy tape or Velcro straps. For installations where the dispense valve is moving, it is recommended that the connector be wrapped with the Graco accessory Velcro wrap (198422) and 2 Velcro straps (198442) as shown in Fig. 7.

Fig. 5

Fig. 6

Fig. 7

10 309376

Maintenance

The following tables list recommended maintenance procedures and frequencies. The maintenance is divided between mechanical and electrical tasks. A typical application is a valve mounted on a robot dispensing a moderately abrasive sealant.

Mechanical

Task

Inspect for leaks n

Check hoses for wear* n

Check/tighten fluid connections* n

Check/tighten air connections* n

Lube packings n

Rebuild dispense valve n

Replace valve n

* Assumes movement from automation.

Electrical

Task

Check cables for wear n

Verify cable connections n

Verify resistance of electric heaters n

Verify resistance of RTD sensors n

Daily

Weekly

Monthly or

30,000 cycles

3-6 months or

125,000 cycles

Monthly

6 Months

6-12 months or

250,000 cycles

18-24 months or

500,000 cycles

12 Months

36-48 months or

1,000,000 cycles

6-8 years or

2,000,000 cycles

Packing Lubrication

This valve has a primary seal, a pressurized grease area, and a secondary seal. The key to long seal life is that the secondary seal only has to seal grease.

When dispensing filled materials this grease should be refreshed once a month.

1. Remove one of the zerk grease fittings (23).

2. Using the grease gun supplied, pump a high quality grease like #115982 (high temperature moisture free) into the remaining zerk fitting until fresh grease comes out the other side.

3. Replace the grease fittings and give the valve one more shot of grease to pressurize the cavity.

309376 11

+ 25 hidden pages