Graco Therm-O-Flow Series Bedienungsanleitung

310538N

Instructions-Parts List

Therm-O-Flow®

Automatic Dispense Valves

Air-operated dispense valves. For professional use only.

Important Safety Instructions

Read all warnings and instructions in this manual.

Save these instructions.

Model 918483 Shown

Table of Contents

2310538N

Table of Contents

List of Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

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

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 48

Graco Information. . . . . . . . . . . . . . . . . . . . . . . . . . 48

List of Models

Valve

Type

Part

No. Type

Voltage /

No. of Pins

Maximum Fluid Working

Pressure

Maximum Air Input

Pressure

Parts

Page

TOF 194485 Snuff Back 120 V / 6 241 bar, 24 MPa (3500 psi) 10 bar, 1 MPa (150 psi) 20

TOF 918483 Snuff Back 120 V / 6 241 bar, 24 MPa (3500 psi) 10 bar, 1 MPa (150 psi) 22

918512 Snuff Back Ambient 241 bar, 24 MPa (3500 psi) 10 bar, 1 MPa (150 psi) 24

TOF 918639 Snuff Back 120 V / 6 241 bar, 24 MPa (3500 psi) 10 bar, 1 MPa (150 psi) 26

TOF+ 243694 Base Seal 240 V / 8 241 bar, 24 MPa (3500 psi) 10 bar, 1 MPa (150 psi) 28

TOF 200 297266 Snuff Back Swirl 240 V / 8 241 bar, 24 MPa (3500 psi) 10 bar, 1 MPa (150 psi) 30

TOF+ 243695 Base Seal H. F. 240 V / 8 241 bar, 24 MPa (3500 psi) 10 bar, 1 MPa (150 psi) 31

TOF+ 243696 Snuff Back 240 V / 8 241 bar, 24 MPa (3500 psi) 10 bar, 1 MPa (150 psi) 33

TOF C27340 Base Seal Ambient 241 bar, 24 MPa (3500 psi) 10 bar, 1 MPa (150 psi) 35

TOF C34068 Base Seal 120 V / 6 241 bar, 24 MPa (3500 psi) 10 bar, 1 MPa (150 psi) 37

TOF C34079 Base Seal 120 V / 6 241 bar, 24 MPa (3500 psi) 10 bar, 1 MPa (150 psi) 39

TOF C50592 Base Seal 120 V / 6 241 bar, 24 MPa (3500 psi) 10 bar, 1 MPa (150 psi) 41

Warnings

310538N 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

result in serious injury.

• This equipment is for professional use only.

• Read all instruction manuals, warnings, tags, and labels before operating the equipment.

• Use the equipment only for its intended purpose. If you are uncertain, call your Graco distributor.

• Do not alter or modify this equipment. Use only genuine Graco parts and accessories.

• Check the equipment daily. Repair or replace worn or damaged parts immediately.

• Do not exceed the maximum air working pressure of 1 MPa (10 bar, 150 psi) to the applicator.

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

manifold.

• Never exceed the recommended working pressure or the maximum air inlet pressure stated on your

pump or in the Technical Data on page 47.

• 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.

• Route hoses away from traffic areas, sharp edges, moving parts, and hot surfaces.

• Do not expose Graco standard hoses to temperatures above 180F (82C) or below –40F (–40C). Do

not expose Graco electrically heated hoses to temperatures above 400F (222C) or below –40F

(–40C).

• Do not expose Graco standard hoses to temperatures above 180F (82C) or below –40F (–40C).

• Do not use the hoses to pull the equipment.

• 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.

• Always wear protective eyewear, gloves, clothing, and respirator as recommended by the fluid and

solvent manufacturers.

• Wear hearing protection when operating this equipment.

• Comply with all applicable local, state and national fire, electrical and other safety regulations.

INSTRUCTIONS

Warnings

4310538N

WARNING

HOT SURFACE AND FLUID HAZARD

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

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

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

• 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.

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

cal treatment.

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

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

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

• Follow the Pressure Relief Procedure on page 11 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 dis-

pensing equipment.

• Do not remove or modify any part of the applicator; 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 11, then remove the tip to clean it.

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

Warnings

310538N 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.

• Ground the equipment and the object being sprayed. The Automatic Dispense Valve is grounded

through proper connection of pin E inside the electrical control panel to truth earth ground inside the

electrical control panel. See Grounding on page 9.

• 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.

• 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 dispens-

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

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

• Have any checks, installation, or service to electrical equipment performed by a qualified electrician

only.

• Make sure all electrical equipment is installed and operated in compliance with applicable codes.

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

• 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.

• 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.

• 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.

Installation

6310538N

Installation

Install the automatic applicator as follows:

• mount the automatic dispense valve

• attach dispense tip, nozzle, or swirl

• connect the air lines

• connect material hose

• connect the electrical cable

• make sure the automatic dispense valve is

grounded

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 socket head screws (300) and two flat

washers (50). Be sure to position the insulation

block (280) and insulation tape (290) between the

dispense valve and the mounting bracket.

FIG. 1

Attach Dispense Tip, Nozzle, or

Swirl

Attach a dispense tip and a nozzle adapter, or a nozzle

adapter alone, to the automatic dispense valve.

Dispense Tip and Nozzle Adapter

Attachment

Attach dispense tip (B) to the automatic dispense

valve.

1. Select a nozzle adapter (C) and a dispensing tip (B).

2. Install the tip and then use the nozzle adapter (C) to

secure the tip to the seat adapter (D).

FIG. 2

Installation

310538N 7

Installation

Nozzle Attachment

Attach a nozzle (C) to the automatic dispense valve.

1. Select a nozzle.

2. Install nozzle adapter (C) on the seat adapter (D).

3. Install nozzle in nozzle adapter (E).

FIG. 3

Swirl Nozzle Attachment

1. Install swirl adapter (C) on seat adapter (D).

2. Install swirl applicator head (E).

3. Install swirl nozzle (F).

FIG. 4

Installation

8310538N

Installation

Connect Air Lines to 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.

Making sure to connect the appropriate air lines to the

appropriate ports (see FIG. 5), securely connect air lines

to dispense valve air ports

(G).

FIG. 5

Connect Material Hose to Dispense Valve

Securely connect the material hose to the dispense

valve material inlet port (A). See FIG. 5.

Connecting Electrical Cable to Dispense

Valve

Connect electrical cable plug from your Therm–O–

Flow or Therm–O–Flow Plus hose or control.

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.

Snuff-Back Valve Shown

Installation

310538N 9

Installation

Grounding Ground the automatic dispense valve:

1. Connect the connector from a heated hose to the

receptacle on the dispense valve.

FIG. 6

FIG. 7

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.

7), inside control panel receptacle, is connected to

true earth ground.

WARNING

FIRE, EXPLOSION, AND ELECTRIC

HAZARD

To reduce the risk of fire, explosion, or

electric shock:

• The power source conduit is not an ade-

quate ground for the system. The unit must

be grounded to either the building ground or

a true earth ground.

• A qualified electrician must complete all

grounding and wiring connections and check

the resistance.

• Refer to your local code for the require-

ments for a “true earth ground” in your area.

• Also read and follow the warnings on page

Ground lead

coming from pin

E is fastened to

the bracket.

Ground lead

coming from con-

tact 8 to true

earth ground.

Troubleshooting

10 310538N

Troubleshooting

Some solutions require disassembling the automatic dispense valve. Always relieve system pressure before

performing these procedures.

See PARTS section for the parts that need to be serviced.

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow

the Pressure Relief Procedure (page 11).

Problem Cause(s) Solution(s)

Air leaks from automatic dispense

valve

Loose air connections Check air connections.

Worn o-rings Replace o-rings (90) and (100) in cylinder

base.

Worn ring Replace ring (110) in cylinder base.

Material leaks from front of

automatic dispense valve

Seal, spacer or retaining ring is worn Replace rod seal (150), spacer (160),

and retaining ring (170).

Obstruction inside dispense valve Remove seat adapter (10). Check and

replace if necessary, rod seal (150),

spacer (160), and retaining ring (170).

Worn needle Check and replace needle (140), if

necessary.If replacing needle, you must

disassemble dispense valve.

Worn seat (Base seal models) Check and replace seat (10) if necessary.

Material leaks from automatic dispense

valve body

Seal not installed correctly Check seal (70) and replace if necessary.

Seal is worn

Automatic dispense valve

does not shut off

Loose air connections Check air connections.

Worn needle-seal interface Check and replace, if necessary, needle

(140), rod seal (150), spacer (160), and

retaining ring (170).

If replacing needle, you must disassemble

dispense valve

Automatic dispense valve

does not shut off

Worn spring-piston interface Disassemble dispense valve. Check

and replace, if necessary, needle (140),

and spring (370).

Automatic dispense valve

does not shut off

Spring broken or not installed correctly Disassemble dispense valve. Check

and replace, if necessary, needle (140),

and spring (370).

Automatic dispense valve does not

heat material

Loose heater wires Check and reconnect wire connections.

Loose sensor wires Check and reconnect wire connections.

Heater unit failed Replace heater. See page 17.

Sensor failed Replace sensor. See page 17.

Temperature controller failed Replace temperature controller.

No power to heating circuitry Apply power to heating circuitry.

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