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 Tor
MD2, convert Soft Seat nose to Hard Seat (Hard
Seat rebuild), needle and nose
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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
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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.
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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
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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)
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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 select Operator mode:
3. Press
4. Press
until .
to accept or to cancel.
until .
to accept or to cancel.
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 or to select the new shot size.
2. Press
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
312393G 10 of 50
(green) or the footswitch to start the shot.
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.
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’
then press . The
.
2. Press
until the upper ICON is .
4. Press
to accept the number or to keep the
current number.
3. Press
4. Press
5. Repeat steps 3 and 4 until both materials dispense
to extend the piston fully.
to retract the piston fully.
5. Press
.
6. The piston should fully retract and a number
between 1250 to 1600 should appear for ‘H’.
from the valve without air.
6. Press
Machine Calibration
Before the machine will accurately dispense, it must
be calibrated.
312393G 13 of 50
twice to return to the Run screen.
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
7. Press
to accept the number or to keep the
.
Priming and Calibration
10. The machine pistons should extend slowly until they
encounter the cylinder entrance and a number
between 2000 to 2400 should appear for ‘H’.
11. If the pistons do not move, manually move the
piston by pulling on the machine drive block, until
mechanical resistance is encountered at the
cylinder entrance.
12. Press
current number.
13. Adjust the Air Pressure Regulator back to a
reasonable value for proper machine operation.
14. Press
to accept the number or to keep the
twice to return to the Run screen.
Phasing (C2)
To enable the machine to dispense the correct ratio of
material from the A and B tanks and to mix properly,
both materials will need to enter the static mixer at the
same time. Phasing shots will need to be executed to
visually verify that the 2 materials are exiting the
dispense valve at the same time.
Remove any static mixer attached to the dispense
valve, and replace it with a ratio check nozzle. Place a
waste container under the valve to capture any
dispensed material.
From the Run screen, press
press
once. The following will screen will be displayed.
, then press , and then
1. Select the location where the piston will reverse
(from the extend to retract motion) by pressing
keys. Pressing will decrease the phasing
shot. Pressing
“+” value indicates that the piston will reverse beyond
the cylinder entrance. A “-“ value indicates the piston
will reverse prior to reaching the cylinder entrance.
2. Press
3. During the shot execution, visually monitor the 2
materials exiting the ratio check nozzle. If the
timing of the 2 materials exiting the nozzle cannot
be properly observed, press
then repeat step 2.
4. If the A side material exits the ratio nozzle before
the B side material (“
Phase Adjustment Screw/ Locking nut and shaft
counterclockwise to move the B piston forward, as
indicated on the
the piston shaft will be significant. Adjustments of a
quarter turn are typical.
5. If the B side material exits the ratio nozzle before
the A side material (“
Phase Adjustment Screw/ Locking nut and shaft
counterclockwise to move the A piston forward, as
indicated on the
(green) or the footswitch.
will increase the phasing shot. A
or accordingly,
”), turn the B piston
ICON. Slight adjustments in
”), turn the A piston
ICON.
or
Figure 12: Phasing Calibration Screen (C2)
Key:
A A material leads B ICON
B Adjust B side Forward ICON
C B material leads A ICON
D Adjust A side Forward ICON
E A and B Exit the Same Time ICON
F Do NO Mechanical Adjustment ICON
G Phase Shot Request ICON
I Screen Number (C2)
J
K Decrease Phase Shot Percentage Amount ICON
L Current Phase Shot Percentage Amount
M Increase Phase Shot Percentage Amount ICON
& keys will navigate to adjacent screens.
6. Repeat step 2 until both materials exit the ratio
check nozzle at the same time (“
7. Press
twice to return to the Run screen.
”).
Open Dispense Valve (ODV) Setting (C3)
The next step in the calibration process is to determine
the proper position to open the Dispense Valve (DV)
during the shot.
Advancing or increasing the opening position (in millimeters) will build more pressure in the material hoses
prior to the dispense valve opening. If the Dispense
Valve opens too late in the shot, a surge of material
can occur or the piston could stall. If the Dispense
Valve opens to early in the shot, material “drooling” at
the beginning of the dispense cycle could occur.
From the Run screen, press
press
2 times. The following screen will be displayed.
, then press , and then
312393G 14 of 50
Priming and Calibration
Figure 13: Open Dispense Valve (ODV) Screen (C3)
Key:
A Current ODV Adjustment (in mm from the cylinder
entrance).
B Adjust ODV value Option ICON.
C Relative ODV Position ICON with respect to
cylinder entrance (This ICON will move right or
left at +/- mm transition).
D Cylinder Entrance ICON (stationary).
I Screen Number (C3)
J
& keys will navigate to adjacent screens.
1. To adjust the ODV position with respect to the
cylinder entrance, press
.
From the Run screen, press
, then press , then press
3 times. The following screen will be displayed.
Figure 14: Stroke Calibration (CAL) Screen (C4)
Key:
A Short Shot Column ICON
B Last/Current Short Shot weight (mass) entry.
C Long Shot Column ICON
D
Last/Current Long Shot weight (mass) entry.
E Grams (Weight or Mass unit used)
F Short Shot ICON
G Long Shot ICON
I Screen Number (C4)
J
& keys will navigate to adjacent screens.
2. Press
to increase the value or to decrease
the value. Values of – 5.0 mm to + 5.0 mm are
allowed.
3. Press
to accept the value or to retain the
previous value. The default value from the factory
is – 1.0 mm.
4. Press
twice to return to the Run screen.
Machine Calibration Shots (C4)
Read all manufacturer’s warning and material MSDS to know the
specific hazards of the material used.
Calibration shots are necessary to program the
machine to properly dispense the correct amount of
material. Several short CAL shots (“
long CAL shots (“
”) are required.
”) and several
Remove the ratio check nozzle, install the static mixer
intended to be used, and adjust the air pressure to the
level intended for use during normal operation.
The air pressure must be set to operating
conditions for this step. Significant changes
in air pressure could adversely affect shot
accuracy.
1. Press to arm the machine to take a short CAL
shots. The icon will be highlighted (“
”). Press
to de-arm the machine.
2. Place the empty container below the static mixer,
and press
3. Press
(green) or the footswitch.
and discard the contents of the material
dispensed
4. Repeat the previous 2 steps until the static mixer is
filled with material. Verify the material dispensed
from the mixer is mixed properly.
5. Place a container on a scale and tare (zero) it.
6. Place the tared container below the static mixer,
and press
7. Press
(green) or the footswitch.
to erase existing average weight data.
8. Place the container with the dispensed material on
the tared scale.
9. Enter the mass in grams into the HMI, by pressing
or accordingly.
10. Press
to accept the number. The number
entered will be transferred to the right of the
average icon (“
”).
11. Repeat steps 5 through 10, skipping step 7, several
times. Each additional shot weight will be averaged
in the
row with the previous shots.
312393G 15 of 50
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