Graco Dispensit 1052 Guide de dépannage

Cycle Detection and Luer Lock Outlet Shown

3A0231F

Operation - Maintenance

Dispensit

1052

Patented meter and dispense system for precise one-component micro-dispensing. Not

for use in explosive atmospheres.

2000 psi (14 MPa, 138 bar) Maximum Outlet Fluid Working Pressure

Metal Sleeves: 1200 psi (8 MPa, 83 bar) Maximum Material Inlet Pressure

Plastic Sleeves: 400 psi (2.8 MPa, 28 bar) Maximum Material Inlet Pressure

100 psi (0.7 MPa, 7 bar) Maximum Air Working Pressure

110°F (43°C) Maximum Ambient Temperature

150°F (65°C) Maximum Operating Temperature

Important Safety Instructions

Read all warnings and instructions in this

manual. Save these instructions.

23A0231F

Contents

1052 Valve Modes . . . . . . . . . . . . . . . . . . . . . . . . . . 3

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

Isocyanate Conditions . . . . . . . . . . . . . . . . . . . . . . 6

Material Self-ignition . . . . . . . . . . . . . . . . . . . . . . . 6

Moisture Sensitivity of Isocyanates . . . . . . . . . . . . 6

Changing Materials . . . . . . . . . . . . . . . . . . . . . . . . . 6

Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Optional Cycle Detection Spool Sensors . . . . . . . 7

Component Identification . . . . . . . . . . . . . . . . . . . . 9

Typical System Configurations . . . . . . . . . . . . . 9

Typical Feed System Components . . . . . . . . . 10

Typical Feed System Components (continued) 11

Metering Valve . . . . . . . . . . . . . . . . . . . . . . . . . 12

Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Typical Installation . . . . . . . . . . . . . . . . . . . . . . 13

Valve Mounting Diagram . . . . . . . . . . . . . . . . . . 14

Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Adjusting the Shot Size . . . . . . . . . . . . . . . . . . . . 16

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Sequence of Operation . . . . . . . . . . . . . . . . . . . 17

Pressure Relief Procedure . . . . . . . . . . . . . . . . . . 18

Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Electrical Requirements . . . . . . . . . . . . . . . . . . . . 20

Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Non Cycle Detect . . . . . . . . . . . . . . . . . . . . . . . 21

Cycle Detect . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

1052 Standard Inlet/Outlet Needle Block . . . . . 25

Rebuild . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Graco Ohio Standard Warranty . . . . . . . . . . . . . . 30

Graco Ohio Information . . . . . . . . . . . . . . . . . . . . 30

1052 Valve Modes

3A0231F 3

1052 Valve Modes

1052 Valves

Part No. Configuration Description

A2A03085 1052-10A-2RS1-062-V 1 Inch 1 inch storke, 0.062 diameter rod, nitrided tool steel wetted

components

A2A03073 1052-10A-2RS1-125-V 1 Inch 1 inch storke, 0.125 diameter rod, nitrided tool steel wetted

components

A2A03010 1052-10A-2RS1-188-V 1 Inch 1 inch storke, 0.188 diameter rod, nitrided tool steel wetted

components

A2A03013 1052-10A-2RS1-250-V 1 Inch 1 inch storke, 0.250 diameter rod, nitrided tool steel wetted

components

A2A03016 1052-10A-2RS1-375-V 1 Inch 1 inch storke, 0.375 diameter rod, nitrided tool steel wetted

components

A2A03091 1052-10A-2RS1-062-V-CD 1 Inch 1 inch storke, 0.062 diameter rod, nitrided tool steel wetted

components, with cycle detection

A2A03079 1052-10A-2RS1-125-V-CD 1 Inch 1 inch storke, 0.125 diameter rod, nitrided tool steel wetted

components, with cycle detection

A2A03055 1052-10A-2RS1-188-V-CD 1 Inch 1 inch storke, 0.188 diameter rod, nitrided tool steel wetted

components, with cycle detection

A2A03056 1052-10A-2RS1-250-V-CD 1 Inch 1 inch storke, 0.250 diameter rod, nitrided tool steel wetted

components, with cycle detection

A2A03057 1052-10A-2RS1-375-V-CD 1 Inch 1 inch storke, 0.375 diameter rod, nitrided tool steel wetted

components, with cycle detection

A2A03088 1052-10A-2TT1-062-V 1 Inch 1 inch storke, 0.062 diameter rod, stainless steel wetted

components

A2A03076 1052-10A-2TT1-125-V 1 Inch 1 inch storke, 0.125 diameter rod, stainless steel wetted

components

A2A03028 1052-10A-2TT1-188-V 1 Inch 1 inch storke, 0.188 diameter rod, stainless steel wetted

components

A2A03031 1052-10A-2TT1-250-V 1 Inch 1 inch storke, 0.250 diameter rod, stainless steel wetted

components

A2A03034 1052-10A-2TT1-375-V 1 Inch 1 inch storke, 0.375 diameter rod, stainless steel wetted

components

A2A03094 1052-10A-2TT1-062-V-CD 1 Inch 1 inch storke, 0.062 diameter rod, stainless steel wetted

components, with cycle detection

A2A03082 1052-10A-2TT1-125-V-CD 1 Inch 1 inch storke, 0.125 diameter rod, stainless steel wetted

components, with cycle detection

A2A03064 1052-10A-2TT1-188-V-CD 1 Inch 1 inch storke, 0.188 diameter rod, stainless steel wetted

components, with cycle detection

A2A03067 1052-10A-2TT1-250-V-CD 1 Inch 1 inch storke, 0.250 diameter rod, stainless steel wetted

components, with cycle detection

A2A03065 1052-10A-2TT1-375-V-CD 1 Inch 1 inch storke, 0.375 diameter rod, stainless steel wetted

components, with cycle detection

Warnings

43A0231F

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 symbol refers to procedure-specific risk. Refer back

to these warnings. Additional, product-specific warnings may be found throughout the body of this manual where

applicable.

WARNING

SKIN INJECTION HAZARD

High-pressure fluid from gun, 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 gun at anyone or at any part of the body.

• Do not put your hand over the dispense outlet.

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

• Follow Pressure Relief Procedure in this manual, when you stop dispensing and before cleaning,

checking, or servicing equipment.

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 MSDS’s 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.

• Always wear impervious gloves when spraying or cleaning equipment.

• If this equipment is used with isocyanate material, see additional information on isocyanates in Iso-

cyanate Conditions Section of this manual.

PERSONAL PROTECTIVE EQUIPMENT

You must wear appropriate protective equipment when operating, servicing, or when in the operating

area of the equipment to help protect you from serious injury, including eye injury, inhalation of toxic

fumes, burns, and hearing loss. This equipment includes but is not limited to:

• Protective eyewear

• Clothing and respirator as recommended by the fluid and solvent manufacturer

• Gloves

• Hearing protection

FIRE AND EXPLOSION HAZARD

Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help prevent

fire and explosion:

• Use equipment only in well ventilated area.

• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and plastic drop

cloths (potential static arc).

• Keep work area free of debris, including solvent, rags and gasoline.

• Do not plug or unplug power cords, or turn power or light switches on or off when flammable fumes

are present.

• Ground all equipment in the work area. See Grounding instructions.

• Use only grounded hoses.

• If there is static sparking or you feel a shock, stop operation immediately. Do not use equipment

until you identify and correct the problem.

• Keep a working fire extinguisher in the work area.

Warnings

3A0231F 5

ELECTRIC SHOCK HAZARD

This equipment must be grounded. Improper grounding, setup, or usage of the system can cause elec-

tric shock.

• Turn off and disconnect power cord before servicing equipment.

• Use only grounded electrical outlets.

• Use only 3-wire extension cords.

• Ensure ground prongs are intact on power and extension cords.

• Do not expose to rain. Store indoors.

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

component. See Technical Data in all equipment manuals.

• Do not leave the work area while equipment is energized or under pressure. Turn off all equipment

and follow the Pressure Relief Procedure in this manual 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.

• 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.

MOVING PARTS HAZARD

Moving parts can pinch or amputate fingers and other body parts.

• Keep clear of moving parts.

• Do not operate equipment with protective guards or covers removed.

• Pressurized equipment can start without warning. Before checking, moving, or servicing equipment,

follow the Pressure Relief Procedure in this manual. Disconnect power or air supply.

PLASTIC PARTS CLEANING SOLVENT HAZARD

Use only compatible water-based solvents to clean plastic structural or pressure-containing parts. Many

solvents can degrade plastic parts and cause them to fail, which could cause serious injury or property

damage. See Technical Data in this and all other equipment instruction manuals. Read fluid and solvent

manufacturer’s warnings.

WARNING

Isocyanate Conditions

63A0231F

Isocyanate Conditions

Material Self-ignition

Moisture Sensitivity of

Isocyanates

ISO will react with moisture (such as humidity) to form

small, hard, abrasive crystals, which become sus-

pended in the fluid. Eventually a film will form on the sur-

face and the ISO will begin to gel, increasing in

viscosity. If used, this partially cured ISO will reduce per-

formance and the life of all wetted parts.

NOTE: The amount of film formation and rate of crystal-

lization varies depending on the blend of ISO, the

humidity, and the temperature.

To prevent exposing ISO to moisture:

• Always use a sealed container with a desiccant

dryer in the vent, or a nitrogen atmosphere. Never

store ISO in an open container.

• Keep the ISO lube pump reservoir (if installed) filled

with Graco Throat Seal Liquid (TSL), Part 206995.

The lubricant creates a barrier between the ISO and

the atmosphere.

• Use moisture-proof hoses specifically designed for

ISO, such as those supplied with your system.

• Never use reclaimed solvents, which may contain

moisture. Always keep solvent containers closed

when not in use.

• Always lubricate threaded parts with ISO pump oil

or grease when reassembling.

Changing Materials

• When changing materials, flush the equipment mul-

tiple times to ensure it is thoroughly clean.

• Always clean the fluid inlet strainers after flushing.

• Check with your material manufacturer for chemical

compatibility.

Spraying or dispensing materials containing isocya-

nates creates potentially harmful mists, vapors, and

atomized particulates.

Read material manufacturer’s warnings and material

MSDS to know specific hazards and precautions

related to isocyanates.

Prevent inhalation of isocyanate mists, vapors, and

atomized particulates by providing sufficient ventila-

tion in the work area. If sufficient ventilation is not

available, a supplied-air respirator is required for

everyone in the work area.

To prevent contact with isocyanates, appropriate per-

sonal protective equipment, including chemically

impermeable gloves, boots, aprons, and goggles, is

also required for everyone in the work area.

Some materials may become self-igniting if applied

too thickly. Read material manufacturer’s warnings

and material MSDS.

Grounding

3A0231F 7

Grounding

This product must be grounded. In the event of an elec-

trical short circuit, grounding reduces the risk of electric

shock by providing an escape wire for the electric cur-

rent.

Metering valve: attach ground wire from grounding lug

to true earth ground. See Component Identification

starting on page 9.

Fluid hoses: use only electrically conductive hoses.

Feed system components: attach ground wire from

grounding lug to true earth ground. See feed system

manual for grounding points.

Fluid supply container: follow local code.

Solvent pails used when flushing: follow local code.

Use only conductive metal pails, placed on a grounded

surface. Do not place the pail on a nonconductive sur-

face, such as paper or cardboard, which interrupts

grounding continuity.

Overview

This single-component meter and dispense device

accurately meters liquid and semi-paste materials.

The machine is ideal for a single-component application

requiring very small and precisely mixed shots.

The ratio of the pneumatic cylinder area to pump shaft

area provides the adjustable pressure intensification

needed to move the separate liquids through the needle

with a flow rate suitable for production requirements.

The complete system is enclosed. See Sequence of

Operation on page 17.

Optional Cycle Detection

Spool Sensors

The spool sensors are magnetic reed switches and

must be connected to an electrical control. An LED on

the switch illuminates to indicate the shifting of the

spool.

Optional Cycle Detection

Sensors

The sensors are magnetic reed switches and must be

connected to an electrical control package. The sensors

wires are #24 awg and have 9 foot (2.7 meters) flying

leads. An LED on the sensor illuminates to indicate a

change in state.

Suggested Sequence of Operation (See

page 17).

• The Valve Inputs are listed in FIG. 8, page 20.

• The Valve Outputs (supplied by others) consisting

of two power valves or one dual power valve [Sole-

noid-Close Spool Valve/RETract (Green Tube 1/4

in. OD) and Solenoid-Open Spool Valve/EXTend

(Yellow Tube 1/4 in.OD)]. Connect each Quick Dis-

connect (5/16-24 fitting) to respective power valve

port.

• Other needed Input would include some type of

Start device (Foot Switch or Control Box) (supplied

by others)

1. Home (Reload) Position

a. Solenoid-Close Spool Valve/RETract is acti-

vated.

b. Solenoid-Open Spool Valve/EXTend is deacti-

vated.

c. PX-EXT and PX-CSV signal have been made.

d. PX-RET and PX-OSV signal is not made.

e. Metering Rod is Retracted.

2. Shot Procedure

a. Start device signal is made.

b. Solenoid-Close Spool Valve/RETract is deacti-

vated.

c. Solenoid-Open Spool Valve/EXTend is acti-

vated.

Optional Cycle Detection Spool Sensors

83A0231F

d. PX-EXT and PX-CSV signal drops off.

e. Spool shifts from the Reload Position to the Dis-

pense Position.

f. PX-OSV signal is made.

g. Metering Rod Extends downward (Dispensing

Material).

h. PX-RET signal is made and Metering Rod is

down (Dispense Material Complete).

i. Solenoid-Open Spool Valve/EXTend is deacti-

vated.

j. Solenoid-Close Spool Valve/RETract is acti-

vated.

k. PX-OSV signal drops Spool shifts from the Dis-

pense Position to the Reload Position and

Metering Rod Retracts upward (Reloading

Material).

l. PX-CSV signal is made.

m. PX-EXT signal is made.

n. Dispense Valve is ready for next Start device

signal.

Component Identification

3A0231F 9

Component Identification

Typical System Configurations

FIG. 1

GREEN

YELLOW

TIMER

DISPENSE

Liquid Control

PRESSURE

SYSTEM

REG-1 REG-2

AUXILIARY

PRESSURE

G-1 G-2

OFF

PB-1

SW-1/PL-1

TR-1

HAND

OFF

SW-2

POWER

AUTO START

Valve

Controls

Top View of Controls

System shown with optional 4104A controls

Component Identification

10 3A0231F

Typical Feed System Components

FIG. 2

DO NOT SERVICE WITHOUT

REMOVING AIR PRESSURE AND

WEARING SAFETY GLASSES.

WARNING

200

psi

20ozCartridgeFeed

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

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