Graco PR70 Series Operation And Maintenance Manual

Operation and Maintenance

PR70
2 Component

TM

Liquid Dispensing Systems

PR70 All Models

100 PSI (0.7 Mpa, 7 bar) Maximum Air Inlet Pressure
For Dispensing Multi-part Sealants and Adhesives
Not Designed for Use in Explosive Atmospheres

Important Safety
Instructions

Read all warnings and
instructions in this
manual.

312393C

PROVEN QUALITY, LEADING TECHNOLOGY.

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

Phone: [phone] Fax: [phone]

[e-mail] [e-mail]

Copyright 2007, Graco Inc is a registered to I.S. EN ISO 9001

www.liquidcontrol.com

Contents

Contents .................................................... 2

Models ....................................................... 3

PR70 Accessories..................................................6

Supplied Manuals ..................................... 7

Related Manuals .......................................7

Warnings ................................................... 8

Installation............................................... 10

General Information .............................................10

Unpacking ............................................................10

Locate and Install the PR70.................................10

Machine Setup .....................................................10

Component Identification ...................... 11

HMI Control and Indicators.................... 12

HMI Main Run Screen..........................................13

Run Screen Operation............................ 13

Tank Level Sensing and Velocity Change (“ ”)
Options (C6)

.........................................................22

Password Setup / Clearing (C5).............23

Setting/Clearing an Administrative Password:..........23

Setting/Clearing a Maintenance ONLY Password:24

Resetting Passwords ...........................................24

Miscellaneous Machine Features .......... 25

HMI Hibernate Mode............................................25

HMI Startup Animation Sequence........................25

HMI Demo Mode Operation .................................25

Pressure Relief Procedure .....................26

Standby/Shutdown Procedure...............26

Error Codes ............................................. 26

Error Code Table.....................................27

ICON Descriptions .................................. 29

Machine Mode Selection......................................13

Machine Operation: Shot Mode ..........................13

Machine Operation: Operator Mode ...................13

Shot Number Selection ........................................13

Machine Disable Mode (“ ”red) .......... 14

Setup Screens......................................... 14

Entering the Setup Screens.................................14

Setup Screens with Passwords Enabled.............14

Machine Priming..................................... 16

Machine Calibration................................ 16

Piston Position Calibration (C1)...........................16

Phasing (C2) ........................................................17

Open Dispense Valve (ODV) Setting (C3)...........17

Machine Calibration Shots (C4)...........................18

Shot Size Definition (M2)........................ 19

Ratio Checks........................................... 19

Maintenance ............................................ 31

Software Upgrades, Run Token.............31

Run Token............................................................31

Troubleshooting...................................... 32

Repair....................................................... 33

Major Mechanical Assemblies, and Attachments 33

Base Frame Assembly.........................................34

Air Cylinder Assemblies, and Rebuild Kits...........35

Drive Block Assembly ..........................................38

Pump Assemblies and Rebuild Kits .....................38

Piston Cylinders or Metering Tubes.....................41

Hose Assemblies .................................................44

Miscellaneous Mechanical Assemblies................45

Wiring Diagrams .....................................48

Technical Data.........................................50

Dimensions..............................................51

Miscellaneous Machine Setups............. 20

Manual Control Options (M1)...............................20

Purge Timer / Alarm Settings (M2) ......................20

Cycle Counter and Silent Mode Control (M3).........21

Date and Time Settings (M4)...............................22

312393C 2 of 52

Graco Ohio Standard Warranty .............52

Models

Models

A PR70 system can be ordered with many different options from the configurator below. The example PR70
system part number illustrated below contains the highlighted choices from the charts on pages 3 - 6.

PR70 - 2 - BT - BF - A - A7 - A4 - 2 - 3 - 1 - 1 - N - 2 - N - N - N - 2 - N - N - N

Code : A B-C D-E F G-H I-J K L M N O P Q R S T U V W

The following configuration P/N was assigned to the machine shipped with this manual:

PR70- - - - - - - - - - - - - - - - - - -

Code : A B-C D-E F G-H I-J K L M N O P Q R S T U V W

The following part number fields apply for PR70 part numbering Configurator process. Items highlighted in italics,
refer to “Super Standard” items with are typically stocked, and provide the best delivery dates.

2007 Product Configurator - PR70

Code A

1 3.0" (4,560mm2) Air Motor
2 4.5" (10,260mm2) Air Motor
3 3.0" Air Motor with hydracheck
4 4.5" Air Motor with hydracheck
5 Electric Drive

Code B High Volume Piston Material

A Nylon A Nylon
B UHMWPE B UHMWPE

Code C High Volume Piston Size

1
2 100, Nylon Only 2 100, Nylon Only
3
4 140, Nylon Only 4 140, Nylon Only
5
6 180 6 180
7 200 7 200
8 220 8 220
9
A 260 A 260
B 280 B 280
C 300 C 300
F
G 360 G 360
H 400 H 400

J 440 J 440

L

M 520 M 520

R 560 R 560
S 600 S 600
T
U 720 U 720

W 800 W 800

X 880 X 880
Y

Z Custom Low Volume Side, consult factory (SST Only)

Motor

High Volume Piston

Low Volume Piston

Check Valve

High Volume Hose

Air Motor Information

80, Nylon Only, Super Standard

120, Nylon Only, Super Standard

160, Super Standard

240, Super Standard

320, Super Standard

480, Super Standard

640, Super Standard

960, Super Standard

Low Volume Hose

Dispense Valve

Mixer

Applicator Mounting

Power Cord

Pressure Transducers

High Volume Tank

High Volume Lib

Low Volume Tank

Low Volume Lib

Low Level Sensors

Heat Controller

Wet Test

Code D

Code E Low Volume Piston Size

1

3

5

9

L

T

Y

80, Nylon Only, Super Standard

120, Nylon Only, Super Standard

160, Super Standard

240, Super Standard

320, Super Standard

F

480, Super Standard

640, Super Standard

960, Super Standard

Low Volume Piston Material

Off-board Tank Stand

312393C 3 of 52

Models

2007 Product Configurator - PR70 (Continued)

Code F

Check Valve

A Standard Check Valve

G-H High Volume Hose

A1 3/16" (4.8mm) - 2.5' (0.6m)
A2 3/16" (4.8mm) - 10' (3.0m)
A3 3/16" (4.8mm) - 15' (4.6m)
A4 1/4" (6.5mm) - 2.5' (0.6m)
A5 1/4" (6.5mm) - 10' (3.0m)
A6 1/4" (6.5mm) - 15' (4.6m)
A7 3/8" (9.5mm) - 2.5' (0.6m)
A8 3/8" (9.5mm) - 10' (3.0m)

A9 3/8" (9.5mm) - 15' (4.6m)
AA 1/2" (13mm) - 2.5' (0.6m)
AB 1/2" (13mm) - 10' (3.0m)

AC 1/2" (13mm) - 15' (4.6m)
AG 3/4" (19mm) - 10' (3.0m)
AH 3/4" (19mm) - 15' (4.6m)

B4 Heated, 1/4" (6.5mm) - 2.5' (0.6m)
B5 Heated, 1/4" (6.5mm) - 10' (3.0m)
B6 Heated, 1/4" (6.5mm) - 15' (4.6m)
B7 Heated, 3/8" (9.5mm) - 2.5' (0.6m)
B8 Heated, 3/8" (9.5mm) - 10' (3.0m)
B9 Heated, 3/8" (9.5mm) - 15' (4.6m)
BA Heated, 1/2" (13mm) - 2.5' (0.6m)
BB Heated, 1/2" (13mm) - 10' (3.0m)

BC Heated, 1/2" (13mm) - 15' (4.6m)
BG Heated, 3/4" (19mm) - 10' (3.0m)
BH Heated, 3/4" (19mm) - 15' (4.6m)

Code K Dispense Valve

1 None
2 MD2, Valve Only 1:1
3 MD2, Valve Only with 10:1 Nose
4 MD2, Handheld 1:1
5 MD2, Handheld with 10:1 Nose
6 MD2, Lever 1:1
7 MD2, Lever with 10:1 Nose

Code L Mixer Type

N None

1 3/16” (4.8mm) x 32
2 1/4" (6.5mm) x 24
3 3/8” (9.8mm) x 24
4 3/8” (9.8mm) x 36
5 3/8” (9.8mm) Combo
6 1/4" (6.5mm) x 24 Luer Lock
7 3/16” (4.8mm) x 32 Luer Lock

Code M Applicator Mounting

N None, Customer Mount Controls and Applicator

1 Mast Mount, Controls & MD2 Applicator machine mounted
2 Mast Mount, Controls Only

I-J Low Volume Hose

A1 3/16" (4.8mm) - 2.5' (0.6m)
A2 3/16" (4.8mm) - 10' (3.0m)
A3 3/16" (4.8mm) - 15' (4.6m)
A4 1/4" (6.5mm) - 2.5' (0.6m)
A5 1/4" (6.5mm) - 10' (3.0m)
A6 1/4" (6.5mm) - 15' (4.6m)
A7 3/8" (9.5mm) - 2.5' (0.6m)
A8 3/8" (9.5mm) - 10' (3.0m)
A9 3/8" (9.5mm) - 15' (4.6m)
AA 1/2" (13mm) - 2.5' (0.6m)
AB 1/2" (13mm) - 10' (3.0m)

AC 1/2" (13mm) - 15' (4.6m)
AG 3/4" (19mm) - 10' (3.0m)
AH 3/4" (19mm) - 15' (4.6m)

B4 Heated, 1/4" (6.5mm) - 2.5' (0.6m)

B5 Heated, 1/4" (6.5mm) - 10' (3.0m)

B6 Heated, 1/4" (6.5mm) - 15' (4.6m)

B7 Heated, 3/8" (9.5mm) - 2.5' (0.6m)

B8 Heated, 3/8" (9.5mm) - 10' (3.0m)

B9 Heated, 3/8" (9.5mm) - 15' (4.6m)
BA Heated, 1/2" (13mm) - 2.5' (0.6m)
BB Heated, 1/2" (13mm) - 10' (3.0m)
BC Heated, 1/2" (13mm) - 15' (4.6m)
BG Heated, 3/4" (19mm) - 10' (3.0m)
BH Heated, 3/4" (19mm) - 15' (4.6m)

Code N

1
2
3
4
5
6
7
8
9

A

Code O

N No
Y Installed

120VAC North American Cord Set
10A, 250V US Cord Set
10A, 250V Continental Europe
10A, 250V U.K./Ireland
10A, 250V Israel
10A, 250V Australia
10A, 250V Italy
10A, 250V Switzerland
10A, 250V,Denmark
10A, 250V India

Power Cord Option

Pressure Transducer

312393C 4 of 52

Models

Code P

High Volume Tank

N None

1 1-1/2" (38mm)NPT FLANGE, No Tanks
2 8L, Twin PE Tanks (High and Low Volumes) and Lid
3 8L one 120 VAC 50/60 Hz agitator
4 8L two 120 VAC 50/60 Hz agitators
5 8L w Shut-off
6 8L one 120 VAC 50/60 Hz agitator w/ Shut-off

7 8L two 110/120 VAC agitators w/Shut-off
S 8L one 240 50/60 Hz VAC agitator
T 8L two 240 50/60 Hz VAC agitators
U 8L one 240 50/60 Hz VAC agitator w/Shut-off

W 8L two 240 50/60 Hz VAC agitators w/Shut-off

D 8L one pneumatic agitator
E 8L two pneumatic agitators
K 8L one pneumatic agitator w/Shut-off
P 8L two pneumatic agitators w/Shut-off
A 3L SST
B 7.5L SST
C 3L SSTw/ Shut-Off
F 7.5L SST w/ Shut-Off
G 7.5L SST w/ Heat 240 VAC
H 7.5L SST w/ Shut-off & Heat 240 VAC

J 30L SST

L 30L SST Heat 240/1
M 60L SST
R 60L SST Heat 240/1
X Accumulator, Viton
Y Accumulator, EP

Code Q High Volume Tank Cover

1 On-board Dust Cover

2 On-board Clamp Down

3 On-board Vacuum Degas

4 On-board Agitate 120VAC 50/60 Hz

5 On-board Agitate 240VAC 50/60 Hz

6 On-board Agitate 120VAC 50/60 Hz & DEGAS

7 On-board Agitate 240VAC 50/60 Hz & DEGAS

8 On-board Agitate 120VAC 50/60 Hz, DEGAS & Fill Port

9 On-board Agitate 240VAC 50/60 Hz, DEGAS & Fill Port
S On-board Agitate Pneumatic
T On-board Agitate Pneumatic & DEGAS
U On-board Agitate Pneumatic, DEGAS & Fill Port
A Off-board Clamp Down-30L
B Off-board Clamp Down-60L
C Off-board Vacuum Degas -30L
F Off-board Vacuum Degas - 60L
G Off-board Agitate SST - 30L
H Off-board Agitate SST - 60L

J Off-board Vacuum Degas & Agitate SST - 30L

L Off-board Vacuum Degas & Agitate SST - 60L
M Off-board Vacuum Degas/Agitate/Fill Port/Slinger SST -30L
R Off-board Vacuum Degas/Agitate/Fill Port/Slinger SST - 60L
V Off-board Pneumatic Agitate SST - 30L

Code Q

W Off-board Pneumatic Agitate SST - 60L

X Off-board Pneumatic Vacuum Degas & Agitate SST - 30L
Y Off-board Pneumatic Vacuum Degas & Agitate SST - 60L
Z Off-board Vacuum Degas/Pneumatic Agitate/FP SST -30L
K Off-board Vacuum Degas/Pneumatic Agitate/FP/SST - 60L
N None

Code R

N None
1 1-1/2" (38mm)NPT FLANGE, No Tanks
A 3L SST
B 7.5L SST
C 3L SST w/ Shut-off
F 7.5L SST w/ Shut-off
G 7.5L SST Heat 240 V
H 7.5L SST w/ Shut-off & Heat 240V

J 30L SST

L 30L SST Heat 240/1

M 60L SST

R 60L SST Heat 240/1

Code S Low Volume Tank Covers

Accumulator, Viton

X
Y Accumulator, EP

1 On-board Dust Cover
2 On-board Clamp Down
3 On-board Vacuum Degas
4 On-board Agitate 120VAC 50/60 Hz
5 On-board Agitate 240VAC 50/60 Hz
6 On-board Agitate 120VAC 50/60 Hz & DEGAS
7 On-board Agitate 240VAC 50/60 Hz & DEGAS
8 On-board Agitate 120VAC 50/60 Hz, DEGAS & Fill Port
9 On-board Agitate 240VAC 50/60 Hz, DEGAS & Fill Port
S On-board Agitate Pneumatic
T On-board Agitate Pneumatic & DEGAS
U On-board Agitate Pneumatic, DEGAS & Fill Port
A Off-board Clamp Down-30L
B Off-board Clamp Down-60L
C Off-board Vacuum Degas -30L
F Off-board Vacuum Degas - 60L
G Off-board Agitate SS - 30L
H Off-board Agitate SS - 60L

J Off-board Vacuum Degas & Agitate SS - 30L

L Off-board Vacuum Degas & Agitate SS - 60L

M Off-board Vacuum Degas/Agitate/Fill Port/Slinger SST -30L

R Off-board Vacuum Degas/Agitate/Fill Port/Slinger SST - 60L
V Off-board Pneumatic Agitate SST - 30L

W Off-board Pneumatic Agitate SST - 60L

X Off-board Pneumatic Vacuum Degas & Agitate SST - 30L
Y Off-board Pneumatic Vacuum Degas & Agitate SST - 60L
Z Off-board Vacuum Degas/Pneumatic Agitate/FP SST -30L
K Off-board Vacuum Degas/Pneumatic Agitate/FP/SST - 60L
N None

High Volume Tank Cover (cont’d)

Low Volume Tank Options

312393C 5 of 52

Models

2007 Product Configurator – PR70 (Continued)

Code T Low Level Sensor Options

1 None
2 PE Tanks
3 Steel Tanks On-Board
4 Steel Tanks Off-Board
5 Steel Tanks 1 On / 1 Off-board
6 2 Accumulator
7 1 Accumulator & 1 Off-board Tank
8 1 Accumulator & 1 On-board Tank

Code U Heat Zone Controller

N None
1 1 Off Board Tank (1 zone)
2 1 On Board Tank (1 Zone)
3 2 Off Board Tanks
4 2 On Board Tanks
5 1 Off Board Tank / 1 On Board Tank OR 1 Hose
6 2 Off Board Tanks / 1 Hose
7 1 Off Board Tank / 1 On Board Tank & 1 Hose OR 2 Hoses
8 2 On Board Tanks / 1 Hose OR 1 On Board Tank / 2 Hoses
9 2 Off Board Tanks / 2 Hoses
A 1 Off Board Tank / 1 On Board Tank / 2 Hoses
B 2 On Board Tanks / 2 Hoses

Code V Wet Test

Code W

Wet Test (Note: Material must be supplied; No

Y

Dealer/Distributor discounts apply)

N No Wet Test

Off-Board Tank Stands

N None, or NA
2 Tank Stand (1 or 2 tanks)

PR70 Accessories

Mixer and Shroud Options

LC0063 Mixer, 3/16 (6.5 mm) x 32, 10 Mixers with shroud LC0081 Mixer, 3/8 (9.8 mm) combo, 50 Mixers

LC0057 Mixer, ¼ (6.5 mm) x 24, 10 Mixers with shroud LC0083 Mixer, 1/4 (6.5 mm) x 24 Luer Lock, 50 Mixers

LC0058 Mixer, 3/8 (9.8 mm) x 24, 10 Mixers with shroud LC0082 Mixer, 3/16 (4.8 mm) x 32 Luer Lock, 50 Mixers

LC0059 Mixer, 3/8 (9.8 mm) x 36, 10 Mixers with shroud LC0084 Mixer, 3/16 (4.8 mm) x 32, 250 Mixers

LC0060 Mixer, 3/8 (9.8 mm) Combo, 10 Mixers with shroud LC0085 Mixer, 1/4 (6.5 mm) x 24, 250 Mixers

LC0061 Mixer, 3/16 (4.8 mm) x 32 Luer Lock, 10 Mixers with shroud LC0086 Mixer, 3/8 (9.8 mm) x 24, 250 Mixers

LC0062 Mixer, ¼ (6.5 mm) x 24 Luer Lock, 10 Mixers with shroud LC0087 Mixer, 3/8 (9.8 mm) x 36, 250 Mixers

LC0077 Mixer, 3/16 (4.8 mm) x 32, 50 Mixers LC0088 Mixer, 3/8 (9.8 mm) combo, 250 Mixers

LC0078 Mixer, ¼ (6.5 mm) x 24, 50 Mixers LC0089 Mixer, 3/16 (4.8 mm) x 32 Luer Lock, 250 Mixers

LC0079 Mixer, 3/8 (9.8 mm) x 24, 50 Mixers LC0090 Mixer, ¼ (6.5 mm) x 24 Luer Lock, 250 Mixers

LC0080 Mixer, 3/8 (9.8 mm) x 36, 50 Mixers

MD2 Valve Kits

255217 MDS2, kit rebuild, air cylinder 255219 MD2, Soft Seat rebuild, needle and nose

255218 MD2, kit rebuild, back-end of wet section (no needle or seat) 255220

Other Accessories

LC0097 Desiccant Dryer, 3/8” NPT with adapter and cartridge LC0100 Vacuum Transfer Pump, 240V, down to 25 Torr

LC0098 Desiccant Dryer refill cartridge LC0091 3.0” Air Cylinder rebuild kit

LC0095 Nitrogen Kit for 30L and 60L tank, 1 tank LC0092 4.5” Air Cylinder rebuild kit

LC0096 Nitrogen Kit for 30L and 60L tank, 2 tanks LC0093 Check Valve rebuild kit

LC0008 Cord, I/O interface and footswitch part LC0094 Rear Pump Seal rebuild kit

LC0099 Vacuum Transfer Pump, 120V, down to 25 Torr

MD2, convert Soft Seat nose to Hard Seat (Hard
Seat rebuild), needle and nose

312393C 6 of 52

Manuals

Supplied Manuals

The following manuals will be supplied with the

PR70 Operation

PR70.
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
with the PR70 machine.

PR70 Feed System

Part

312394 Manual, Tank/Feed System, PR70

312185 Manual, Dispense Valve, MD2

312413 Manual, Heat Control, Tank/Hoses

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

component.

PR70 Operation

Part

312393 Manual, Operation & Maintenance PR70

Dispense Valve, MD2

Part Description

Heat Control Module(s)

Part Description

Description

Description

312393C 7 of 52

Warnings

Warnings

The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclama­tion 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.

312393C 8 of 52

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 manu­facturer’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

312393C 9 of 52

Installation

Installation

General Information

Accessories are available from Graco. Make certain all
accessories are adequately sized and pressure-rated to
meet your system needs.

Figures 2 thru 4 are only a guide for identifying system
components and for assisting in installation. Contact
your Graco distributor or Graco Ohio Customer Service
for assistance in designing a system to suit your
particular needs.

Unpacking

1. Inspect the shipping container carefully for damage.
Contact the carrier promptly if there is damage.

2. Open the box and inspect the contents carefully.
There should not be any loose or damaged parts in
the container.

3. Compare the packing slip against all the items in
the box. Report any shortage or other inspection
problems immediately.

4. Remove the PR70 system components from the
container. Do not lift the machine by the tanks.

Locate and Install the PR70

1. Locate a bench top or equivalent location to
mechanically mount the PR70 dispensing machine.

Verify the location has access to compressed air,
AC power and is well ventilated.

2. Place the PR70 onto the designated location. Allow
to the machine to rest on the rubber feet provided.

3. Turn the Shield Locking Screws clockwise on both
sides to remove the PR70 protective shield.

4. Attach the PR70 frame to the selected location by
installing fasteners (not provided with unit) thru the
4 mounting holes. Refer to Figure 1 for mounting
hole dimensions.

Machine Setup

Avoid contact with electrical inter-connects, when connecting electric
power to the machine. Read all manufacturer’s warning and material
MSDS to know the specific hazards of the material used.

1. Connect a compressed airline to the input air in the
back of the machine.

2. Load material into the on-board or off-board tanks
feeding the machine.

3. Using the power cord provided, connect AC power
(100-240V, 50/60 Hz, single-phase) to the machine.

Figure 1: Mounting Hole Dimensions for Installing the PR70 Machine (dimensions in inches/mm)

312393C 10 of 52

Component Identification

Component Identification

Key:

A Dispense Valve (DV)
B HMI (Human Machine Interface)
C Static Mixer
D Shield Locking Screw
E Power Switch
F Air Filter
G Customer Input Receptacle
H Protective Shield
I Air Pressure Regulator
J Ball Valve (Optional)
K A and B Tanks (Onboard,

Polyethylene versions illustrated).

Figure 2: Typical PR70 (Back View, without Hoses)

Figure 3: PR70 Back View with Shield, Tanks, DV and HMI Removed.

Key:

A Pump Assembly
B Solenoid Valves
C Air Cylinder Assembly
D DC Power Supply
E Fluid Control Module (FCM)

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Component Identification

Key:

A Drive Block
B Hydracheck (optional)
C Check Valve
D Cylinder (Metering Tube)
E Rear Bearing
F Phase Adjustment Screw/Locking

Nut

G Mounting Hole in Base Frame

Figure 4: PR70 Top View with Shield, Tanks, DV and HMI Removed.

HMI Control and Indicators

Figure 5: PR70 HMI Controls

Key:

A Screen, Display Area
B, D Up and Down Keys
C Up and Down Key LED
E Enter Key LED
F Enter Key
G-J Soft Keys 1 thru 4 (Left to Right).
K Shot Mode ICON
L Shot Mode LED
M Mode Select Key

N Operator Mode ICON
O Operator Mode LED
P Red Stop or Cancel Key (used to stop machine

operation)
Q Lock Key (used to enter and exit setup screens)
R Green Go Key (used to request a shot)
S Display area
T Diagnostic LED’s

U HMI Rear Access Panel (used to access clock

battery and for reprogramming the HMI).

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Run Screens

HMI Main Run Screen

Figure 6: Typical PR70 Main Run Screen (Shot and Operator Modes) Respectively)

Key:

A Shot Number Field (“x” in Operator Mode)
B Shot Size Field (“XXXXXX” in Operator Mode)
C Shot weight/mass unit of measure (Grams).
D Tank Fill Status Indicators
E Pistons Status Field

F Cycle Counter
G DV status Field
H Purge Timer status Field
I Error code status Field
J Current Date Field (DD-MM-YY)
K Current Time Field (24 Hr. Format)

Run Screen Operation

Read all manufacturer’s warning and material MSDS to know the
specific hazards of the material used.

Machine Mode Selection

To dispense material, one of the following 2 modes
must be selected;

• Shot mode dispenses a predetermined amount
of material when the machine receives a “Go”
command.

• Operator mode dispenses material as long as
the machine is receiving a “Go” command.

3. To cancel the shot, press

Machine Operation: Operator Mode

1. Place the item or part to be filled below the
dispense valve static mixer.

2. Press and hold
the shot. The machine will continue to dispense

until the

The pistons will not retract unless they are almost fully
extended. They will automatically retract after 4
minutes. The machine will beep to signal that it is about

to retract. To manually retract the machine, press

(green) or the footswitch is released.

(green) or the footswitch to start

.

.

To select Shot mode:

1. Press

2. Press to accept or to cancel.

To select Operator mode:

3. Press

4. Press

until .

until .

to accept or to cancel.

Machine Operation: Shot Mode

1. Place the item or part to be filled below the
dispense valve static mixer

2. Press

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(green) or the footswitch to start the shot.

Shot Number Selection

In Shot mode, up to 5 predefined shot sizes may be
selected. To select a shot:

1. When the machine is idle (not dispensing a shot)

press

2. Press

or to select the new shot size.

to accept, or to cancel.

Disable Mode, Entering Set-up Screens

Machine Disable Mode (“ ”red)

2. To enter the calibration screens, press . To

enter the maintenance screens, press
to Figure 9 for a screen navigation diagram.

. Refer

Setup Screens with Passwords Enabled

1. From the Run screen press . If a password has

Figure 6: Typical Run Screen when Machine in

“Disable” Mode

1. At any time and from any screen, to immediately

disable all machine motion, press (red).

been programmed, the Password Entry Screen
(Figure 8) will be displayed.

2. If activated, the purge timer will be disabled

3. To resume operation, the machine must be put
back into an operating mode as described in the
Machine Mode Selection section.

4. If activated, the purge timer will not restart until a
shot is taken.

Setup Screens

Before the machine will operate properly, it must be
calibrated and shot size information must be entered.

Entering the Setup Screens

1. From the Run screen press . If no password
has been programmed into the HMI, the
Programming Mode Selection Screen (Figure 7)
will be displayed.

Figure 8: Password Entry Screen

2. Enter the 6 digit password by pressing the
corresponding soft keys, G-J in Figure 5.

th

3. After the 6

4. If the correct password has been entered, the
Programming Mode Selection Screen will be
displayed. Refer to Figure 9 for a screen navigation
diagram.

5. If the incorrect password has been entered, the
password entry will need to be repeated until the
correct 6-digit sequence is entered.

6. To abort the password entry, press

digit has been entered, press .

.

Figure 7: Programming Mode Selection Screen

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Screen Layout

Figure 9: PR70 Screen Navigation Diagram

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Priming and Calibration

Machine Priming

Before the machine can be properly calibrated with
material, it will need to be primed.

Read all manufacturer’s warning and material MSDS to know the
specific hazards of the material used.

From the Run Screen press then press . The
following screen will be displayed.

Figure 10: Maintenance Screen for Priming (M1)

Key:

A Full Retract ICON
B Full Extend ICON
C Change Dispense Valve Mode

= Always Open

= Always Closed

= Opens at Cylinder Entrance (Automatic)
D Current Piston Position
E Current Dispense Valve Mode
F Screen Number (C1)

G

& keys will navigate to adjacent screens.

1. Place a waste container under the dispense valve

to capture any dispensed material.

2. Press

3. Press

until the upper ICON is .

to extend the piston fully.

Be careful not to pinch fingers when manually moving the machine
drive block.

Piston Position Calibration (C1)

This step should be executed the 1st time the machine
is setup, and may not need to be re-executed unless
the position sensor, an electronic component or a piston
has been replaced.

From the Run Screen press
following screen will be displayed.

Figure 11: Piston Position Calibration Screen (C1)

Key:

A Full Extend position number from last calibration
B Full Extend Command ICON
C Full Retract position number from last calibration
D Full Retract Command ICON
E Cylinder Entrance position from last calibration
F Cylinder Entrance Command ICON
H Current Piston Position Field
I Screen Number (C1)

J

& keys will navigate to adjacent screens.

1. Place a waste container under the dispense valve
to capture any dispensed material.

2. With air pressure applied to the machine, press

3. The piston should fully extend and a number
between 3600 to 3900 should appear for ‘H’

4. Press

to accept the number or to keep the

current number.

then press . The

.

4. Press to retract the piston fully.

5. Repeat steps 3 and 4 until both materials dispense
from the valve without air.

6. Press

twice to return to the Run screen.

Machine Calibration

Before the machine will accurately dispense, it must
be calibrated.

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5. Press

.

6. The piston should fully retract and a number
between 200 to 400 should appear for ‘H’

7. Press

to accept the number or to keep the

current number.

8. Decrease the air pressure by adjusting the machine
air pressure regulator to a minimal value (i.e. ~ 10 ­20 psi).

9. Press

.