Graco PR70 Series Bedienungsanleitung

Feed Systems

PR70

2 Component

Liquid Dispensing Systems 312394B

PR70 Feed Systems All Models

For use in dispensing of sealants and adhesives

Important Safety

Instructions

Read all warnings and

instructions in this manual.

This manual is supplemental and

only covers some very specific

warnings and instructions as they

pertain to the feed systems. Please

refer to manual 312393 for a

complete list of warnings, wetted

materials, warranty information

and instructions for the entire

machine.

PROVEN QUALITY, LEADING TECHNOLOGY.

GRACO OHIO INC. 8400 PORT JACKSON AVE. NW NORTH CANTON, OH 44720-5464

Phone: 330.966.3000 Fax: 330.966.3006 www.liquidcontrol.com

[email protected] [email protected]

Table of Contents

Table of Contents ..................................................................................................2

Supplied Manuals ..................................................................................................3

Related Manuals ....................................................................................................3

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

Identify Your Feed System....................................................................................6

On-Board Polyethylene Feed Systems................................................................7

Polyethylene Lid Options ..........................................................................................................................................8

Low Level Sensor Option..........................................................................................................................................8

Low Level Sensor Calibration ...................................................................................................................................9

Low-Level Sensor LED Indicators and Trouble Shooting.........................................................................................9

Installation / Maintenance and Repair ....................................................................................................................10

Assembly Diagrams / Spare Parts..........................................................................................................................12

On-Board Stainless Steel Feed Systems...........................................................24

Stainless Steel On-Board Lids................................................................................................................................25

Installation, Operation, Maintenance and Repair...................................................................................................26

Vacuum Degas Procedure ..................................................................................28

Installing or Replacing Low Level Sensors on SST Tanks..............................31

Assembly Diagrams / Spare Parts..........................................................................................................................33

Accumulators.......................................................................................................47

General Setup.........................................................................................................................................................47

Accumulator Low Level Sensors ............................................................................................................................53

Off-Board Stainless Steel Feed Systems ..........................................................54

Stainless Steel Off-Board Lids................................................................................................................................55

Level Sensors ......................................................................................................71

312394B 2 of 71

Manuals

Supplied Manuals

The following manuals will be supplied with the PR70. PR70 Operation

Refer to these documents for detailed machine Part Description

information. 312393 Manual, Operation & Maintenance

PR70

PR70 Feed System

Part Description

312394 Manual, Tank/Feed System, PR70

Dispense Valve, MD2

Part Description

312185 Manual, Dispense Valve, MD2

* Heat Control Module(s)

Part Description

312413 Manual, Heat Control, Tank/Hoses

Related Manuals

The following manuals are for accessories to be used PR70 Operation

with the PR70 machine. Part Description

312393 Manual, Operation & Maintenance

PR70

PR70 Feed System

Part Description

312394 Manual, Tank/Feed System, PR70

Dispense Valve, MD2

Part Description

312185 Manual, Dispense Valve, MD2

Heat Control Module(s)

Part Description

312413 Manual, Heat Control, Tank/Hoses

* The Heat Control Module manual is not provided for machines which do not have a Heated Tank and/or

Hose component.

312394B 3 of 71

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

ELECTRIC SHOCK HAZARD

Improper grounding, setup, or usage of the system can cause electric 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 sprayer and extension cords.

• Do not expose to rain. Store indoors.

SKIN INJECTION HAZARD

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

• Do not put your hand over the end of the dispense nozzle.

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

• Follow Pressure Relief Procedure in this manual, when you stop spraying 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.

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 and clean 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 lights on or off when flammable fumes are present.

• Ground equipment, personnel, object being sprayed, and conductive objects in work area. See

Grounding instructions.

• Use only Graco grounded hoses.

• Check gun resistance daily.

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

until you identify and correct the problem.

• Do not flush with gun electrostatics on. Do not turn on electrostatics until all solvent is removed from

system.

• Keep a working fire extinguisher in the work area.

312394B 4 of 71

Warnings

WARNING

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.

• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data in all

equipment manuals. Read fluid and solvent manufacturer’s warnings. For complete information about

your material, request MSDS forms from distributor or retailer.

• 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.

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

BURN HAZARD

Equipment surfaces and fluid that’s heated can become very hot during operation. To avoid severe burns,

do not touch hot fluid or equipment. Wait until equipment/fluid has cooled completely.

312394B 5 of 71

Feed System Identification

Identify Your Feed System

1. Your machine should include one of 5 feed system

options (see Figure 1 below)

A. On-Board Dual Polyethylene Tanks

B. On-Board Stainless Steel Tanks

C. 1-1/2” NPT Flange for attaching your own

feed package

D. A ccumulators

E. Off-Board Stainless Steel Tanks

F. Combination of One On-Board & One Off-

board Stainless Steel Tank

2. Each feed system has a variety of possible

options which will be covered in detail in

subsequent sections of this manual. Once you

have identified your feed system, please refer

back to the table of contents for the location of

your specific information

A. B C.

D. E. F.

Figure 1: Typical PR70 (without HMI, hoses or dispense valves. Off-Board Tanks assemblies may or may not

come with the stand shown here)

312394B 6 of 71

On-Board Polyethylene Feed Systems

Figure 2: On-Board Polyethylene Feed Systems

KEY:

A: Agitators (Optional) E: Ball Valve Shut-Off Assemblies (Optional)

B: Polyethylene Tank Lids F: Lid Clamp Assembly (Comes with Agitator Assembly)

C: 8L Dual Polyethylene Tank G: Low Level Sensors (Optional)

D: Liter Markers H: Lock Rings

CAUTION

• DO NOT HEAT THE POLYETHYLENE TANK ASSEMBLIES

• DO NOT PRESSURE FEED THE POLYETHYLENE TANK ASSEMBLIES

• DO NOT VACUUM DEGAS THE POLYETHYLENE TANK ASSEMBLIES

• DO NOT USE TANK ASSEMBLIES AS SUPPORT WHILE FILLING FROM

LARGER CONTAINERS

• CHECK THE BREATHERS ON THE LIDS REGULARLY TO ENSURE

THEY ARE NOT CLOGGED AND AIR IS FLOWING FREELY

312394B 7 of 71

On-Board Polyethylene Feed Systems

Polyethylene Lid Options

3. Polyethylene tanks have two lid options (see figure 2 below):

A. Plain with breather

B. With Electric Agitator (120VAC or 240VAC)

C. With Pneumatic Agitator

4. Regardless of lid type, begin by placing in the tank with the two flat side facing each other as shown above in

Figure 2

B. C.

Figure 3: Possible Polyethylene Lids

Low Level Sensor Option

5. If your tanks come with the Low-Level Sensors already installed, they will already be calibrated during factory

installation. However, if you order them at a later date, please follow the instructions below

NOTE: SENSORS MUST BE INSTALLED AND CALIBRATED ON AN EMPTY

TANK!

6. Install sensors as shown below with the screws

provided with the sensor kit

7. Plug the connector on the sensor into the connector

on the base machine

Figure 4: Low Level Sensor Installation Figure 5: Low Level Sensor Harness Installion

312394B 8 of 71

On-Board Polyethylene Feed Systems

Be careful when reaching into the tanks to verify that the sensors are

functioning. Read all manufacturer’s warning and material MSDS to know the

specific hazards of the material used. Wear respirator, gloves and other

protective clothing as necessary before dispensing material.

Low Level Sensor Calibration

8. After plugging in the harness, locate the TEACH

ELEMENT in the area called out in the illustration to

the right. It will be marked with a “bullseye.”

A. Activate the teach element by holding a

screw-driver near the bullseye. Only hold the

screw-driver there until the GREEN LED

begins flashing, but no more than five (5)

seconds

B. After a short time, the GREEN LED will stay lit

continuously.

C. You are now in OPERATING MODE for that

sensor. Repeat with the other sensor.

9. If the tank is clean and you wish to check the sensor

and make sure it’s working before dumping material

in, you can simply reach your hand down inside the

tank and touch the tank wall in the sensor area. A

GREEN and YELLOW light illuminated at the same

time means the sensor is detecting your hand.

10. If the tank is empty, but not clean, please refer to

your MSDS sheets to determine what protective

measures must be taken before reaching into the

tank.

11. Please refer to manual 312393A for instructions on

interfacing the new sensors with your machine’s

HMI

Figure 6: Low Level Sensor Calibration

Low-Level Sensor LED Indicators and Trouble Shooting

Green LED • ON = Unit is ready for operation

• Flashes Slowly (1Hz) = Adjustment mode in empty state

• Flashes Quickly (2Hz) = Adjustment mode full state

• OFF = Locking mode

Yellow LED • OFF = Switching output disabled

• ON = Switching output enabled

Red LED • ON = close to reaching the switching threshold

• Flashes Quickly (8Hz) = Adjustment Error, Internal Fault

Red & Yellow

LED’s Together

• Flashing Quickly (2Hz) simultaneously = Short Circuit in the switching output

Please note that the RED LED DOES NOT INDICATE MALFUNCTION of the unit. It indicates that the internal

sensor signal is near the switching threshold

312394B 9 of 71

On-Board Polyethylene Feed Systems

Be careful when interacting with the polyethylene feed systems due to the contents

of the tanks. Read all manufacturer’s warning and material MSDS to know the

specific hazards of the material used. Wear respirator, gloves and other protective

clothing as necessary before dispensing material.

Always unplug the agitators from their power source (electric or pneumatic) before

performing any maintenance.

Hearing protection may be required if sitting in close proximity to the pneumatic

agitators

Installation / Maintenance and Repair

12. If the lids come with agitator assemblies, the

upright support comes with an extra clamp

assembly on both sides. Rotate the clamp up to

the position shown below (Figure 4), slide it all the

way into the handle areas as shown and insert the

tethered quick-release pin into the hole in the

support upright.

13. If necessary, to remove tanks from pump housing,

remove the two top screws holding the tank to

upright support and loosen (Note: There is no

need to completely remove) the six (6) socket

head cap screws that hold the tank to the pump

housing and rotate the lock rings counter

clockwise and lift the tanks off

Figure 7: Final Clamp Position Figure 8: Tank Removal From Pump Housing

312394B 10 of 71

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