313871e sn8044 rc operation/maintenance, english · 313871e operation - maintenance sn8044 rc for...

313871E

Operation - Maintenance

SN8044 RC

For dispensing controlled ratio shots of resin and isocyanate. Not for use in explosiveatmospheres.

3000 psi (20.6 MPa, 206 bar) Maximum Working Pressure

Important Safety InstructionsRead all warnings and instructions in this andall supplied manuals. Save these instructions.

Machine shown may be different from your machine

ti11588b

2 313871E

ContentsModels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Isocyanate Hazard . . . . . . . . . . . . . . . . . . . . . . . . . 6Material Self-ignition . . . . . . . . . . . . . . . . . . . . . . . 6Moisture Sensitivity of Isocyanates . . . . . . . . . . . . 6Keep Components A and B Separate . . . . . . . . . . 6Foam Resins with 245 fa Blowing Agents . . . . . . . 6Changing Materials . . . . . . . . . . . . . . . . . . . . . . . . . 6Component Identification . . . . . . . . . . . . . . . . . . . . 8

System Schematic . . . . . . . . . . . . . . . . . . . . . . . 8Main Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Human Machine Interface (HMI) Screens . . . . . 12Tanks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Connecting Electrical Cord . . . . . . . . . . . . . . . . 28Day Tanks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29Robot Interface . . . . . . . . . . . . . . . . . . . . . . . . . 29Blocking Valve . . . . . . . . . . . . . . . . . . . . . . . . . 29

New Machine Maintenance . . . . . . . . . . . . . . . . . . 30Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Pumpline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Pouring Operation . . . . . . . . . . . . . . . . . . . . . . . . . 32

Low and High Pressure Circulation . . . . . . . . . . 32Pouring Requirements . . . . . . . . . . . . . . . . . . . 32Beginning the Pour . . . . . . . . . . . . . . . . . . . . . . 32

Night Mode Operation . . . . . . . . . . . . . . . . . . . . . . 33Starting Night Mode . . . . . . . . . . . . . . . . . . . . . 33Requirements for Continuing Night Mode . . . . . 33

Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34Overnight/Weekend . . . . . . . . . . . . . . . . . . . . . 34Long-Term Shutdown . . . . . . . . . . . . . . . . . . . 34

Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35Temperature Control . . . . . . . . . . . . . . . . . . . . . 35Heated Hose and Power Control System . . . . . 37Pouring Settings . . . . . . . . . . . . . . . . . . . . . . . . 37MixHead Settings . . . . . . . . . . . . . . . . . . . . . . . 38Chemical Flow Settings . . . . . . . . . . . . . . . . . . 38Day Tank Settings . . . . . . . . . . . . . . . . . . . . . . . 39Flow Measurement Controls . . . . . . . . . . . . . . . 40

Pressure Relief Procedure . . . . . . . . . . . . . . . . . . 43Air Pressure Relief . . . . . . . . . . . . . . . . . . . . . . 43Chemical Line Pressure Relief . . . . . . . . . . . . . 43

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44Purge Air from Metering Pump . . . . . . . . . . . . . 44Drain the Water Separator . . . . . . . . . . . . . . . . . 44Check Desiccant . . . . . . . . . . . . . . . . . . . . . . . . 44Replace Desiccant . . . . . . . . . . . . . . . . . . . . . . . 44Check/Replace Metering Pump

Inlet Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 45Check Tightness of all Clamps and Fittings . . . 45Check Hoses for Wear . . . . . . . . . . . . . . . . . . . 45Replace the PLC battery . . . . . . . . . . . . . . . . . . 45Empty the Day Tank . . . . . . . . . . . . . . . . . . . . . 46

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 47Alarm Status Screen . . . . . . . . . . . . . . . . . . . . . 47Alarm History Screen . . . . . . . . . . . . . . . . . . . . 48Alarms List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . 50

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53Graco Ohio Standard Warranty . . . . . . . . . . . . . . 54Graco Ohio Information . . . . . . . . . . . . . . . . . . . . . 54

Models

313871E 3

Models

See Connecting Electrical Cord, page 28, for cord specifications.

Related Manuals

Model Voltage AmpsFrequency

(Hz) PhaseMaximum Working Pressure,

psi (MPa, bar)

SN8044 460 47 60 3 3000 (20.6, 206)

Assembly Drawings Manual

Part Description

U80752 Assembly Drawings Manual

Pumpline Manuals

Part Description

3A0019 Z-Series Chemical Pumps Instructions - Parts

3A0020 Horizontal Hydraulic Driver Repair - Parts

Heated Hose Manuals

Part Description

309572 Heated Hose Manual

312056 Power-Lock Splice Kit

Auto-Fill Manuals

Part Description

308443 Husky™ 1040 Air-Operated Diaphragm Pumps

309815 Feed Pump Kits

Regulator Manuals

Part Description

308167 Low Volume Air Regulators

309475 High Pressure Regulator

Warnings

4 313871E

WarningsThe 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 backto these warnings. Additional, product-specific warnings may be found throughout the body of this manual whereapplicable.

DANGERHIGH VOLTAGE ELECTRIC SHOCK HAZARDContact with high voltage equipment and improper grounding, setup, or usage of the system can causedeath or serious injury.• Turn off and disconnect power at main switch before disconnecting any cables and before servicing

equipment.• This equipment must be grounded. Connect only to grounded power source.• All electrical wiring must be done by a qualified electrician and comply with all local codes and

regulations.

WARNINGTOXIC FLUID OR FUMES HAZARDToxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, orswallowed.• 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.

PERSONAL PROTECTIVE EQUIPMENTYou must wear appropriate protective equipment when operating, servicing, or when in the operatingarea of the equipment to help protect you from serious injury, including eye injury, inhalation of toxicfumes, 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

SKIN INJECTION HAZARDHigh-pressure fluid from dispense valve, hose leaks, or ruptured components will pierce skin. This maylook like just a cut, but it is a serious injury that can result in amputation. Get immediate surgicaltreatment.• 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.

PRESSURIZED EQUIPMENT HAZARDFluid from the gun/dispense valve, leaks, or ruptured components can splash in the eyes or on skin andcause serious injury.• Follow Pressure Relief Procedure in this manual, when you stop spraying and before cleaning,

checking, or servicing equipment.• Tighten all fluid connections before operating the equipment.• Check hoses, tubes, and couplings daily. Replace worn or damaged parts immediately.

Warnings

313871E 5

FIRE AND EXPLOSION HAZARDFlammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help preventfire 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.

PRESSURIZED ALUMINUM PARTS HAZARDDo not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or fluidscontaining such solvents in pressurized aluminum equipment. Such use can cause serious chemicalreaction and equipment rupture, and result in death, serious injury, and property damage.

EQUIPMENT MISUSE HAZARDMisuse 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 informationabout 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 HAZARDMoving 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.

BURN HAZARDEquipment surfaces and fluid that’s heated can become very hot during operation. To avoid severeburns, do not touch hot fluid or equipment. Wait until equipment/fluid has cooled completely.

WARNING

Isocyanate Hazard

6 313871E

Isocyanate Hazard

Material Self-ignition

Moisture Sensitivity ofIsocyanatesIsocyanates (ISO) are catalysts used in two componentfoam and polyurea coatings. ISO will react with moisture(such as humidity) to form small, hard, abrasive crystals,which become suspended in the fluid. Eventually a filmwill form on the surface and the ISO will begin to gel,increasing in viscosity. If used, this partially cured ISOwill reduce performance and the life of all wetted parts.

To prevent exposing ISO to moisture:

• Always use a sealed container with a desiccantdryer in the vent, or a nitrogen atmosphere. Neverstore ISO in an open container.

• Keep the ISO lube pump reservoir (if installed) filledwith Graco Throat Seal Liquid (TSL), Part 206995.The lubricant creates a barrier between the ISO andthe atmosphere.

• Use moisture-proof hoses specifically designed forISO, such as those supplied with your system.

• Never use reclaimed solvents, which may containmoisture. Always keep solvent containers closedwhen not in use.

• Never use solvent on one side if it has been contam-inated from the other side.

• Always lubricate threaded parts with ISO pump oilor grease when reassembling.

Keep Components A andB Separate

Foam Resins with 245 faBlowing AgentsNew foam blowing agents will froth at temperaturesabove 90°F (33°C) when not under pressure, especiallyif agitated. To reduce frothing, minimize preheating in acirculation system.

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 chemicalcompatibility.

• Most materials use ISO on the A side, but some useISO on the B side.

• Epoxies often have amines on the B (hardener)side. Polyureas often have amines on the B (resin)side.

Spraying materials containing isocyanates createspotentially harmful mists, vapors, and atomized par-ticulates.

Read material manufacturer’s warnings and materialMSDS to know specific hazards and precautionsrelated to isocyanates.

Prevent inhalation of isocyanate mists, vapors, andatomized particulates by providing sufficient ventila-tion in the work area. If sufficient ventilation is notavailable, a supplied-air respirator is required foreveryone in the work area.

To prevent contact with isocyanates, appropriate per-sonal protective equipment, including chemicallyimpermeable gloves, boots, aprons, and goggles, isalso required for everyone in the work area.

Some materials may become self-igniting if appliedtoo thickly. Read material manufacturer’s warningsand material MSDS.

The amount of film formation and rate of crystalli-zation varies depending on the blend of ISO, thehumidity, and the temperature.

CAUTIONTo prevent cross-contamination of the equipment’swetted parts, never interchange component A (isocy-anate) and component B (resin) parts.

Changing Materials

313871E 7

Component Identification

8 313871E

Component IdentificationSystem Schematic

X

20 GAL TANK

AGITATOR ASSY

TANK BLEED RELIEF

BLEEDSHUTOFF

MGR

TANK PRESSGAUGE

0-100 PSINITROGEN BLANKET

SHUTOFF

SAFETY RELIEFVALVE

PRESSREGULATOR

LEVELSENSORS

TANK FLUIDLEVEL SIGHT

GAUGE

TANK DRAINVALVE

TANK OUTLETBALL VALVE

METERING PUMPINLET FILTER

INLET LOWPRESS SWITCHSET TO 10 PSI

1" HOSE

1/2" HOSE

1/2" HOSE

NITROGEN SUPPLY100 PSI @ 2 SCFM

AIR SUPPLY100 PSI @ 10 SCFM

BLOCKINGVALVE

X

X

M

Pump Motor

20 GAL TANK

AGITATOR ASSY

TANK BLEED RELIEF

BLEEDSHUTOFF

MGR

TANK PRESSGAUGE

0-100 PSINITROGEN BLANKET

SHUTOFF

SAFETY RELIEFVALVE

PRESSREGULATOR

LEVELSENSORS

TANK FLUIDLEVEL SIGHT

GAUGE

TANK DRAINVALVE

TANK OUTLETBALL VALVE

METERING PUMPINLET FILTER

INLET LOWPRESS SWITCHSET TO 10 PSI

ADJUSTABLEPRESS RELIEF

SET TO 3000 PSIINITIALLY

MIXHEAD HIGHPRESS SWITCH

SET TO 3200 PSI

1" HOSE

T/C

1/2" HOSE

1/2" HOSE

1/2" HOSEMIXHEAD HIGHPRESS SWITCH

SET TO 1500 PSI

X

PRESSURETRANSDUCER0-5000 PSI


313871E 9

POLYSIDE

FLOWMETER

T/C

0.1-7.0 GPM

HIGH PRESSGAUGE

0-5000 PSI

1/2" HOSE

A2 POLY SUPPLY

POLY BACKPRESS VALVE

POLY LOWPRESS RECIR

VALVE

HEATER

ISOSIDE

FLOWMETER

T/C

0.1-7.0 GPM

HIGH PRESSGAUGE

0-5000 PSI

1/2" HOSE

A2 POLY SUPPLY

BLOCKINGVALVE

POLY BACKPRESS VALVE

POLY LOWPRESS RECIR

VALVE

HEATER

X

P B T A P B T A P T B A

M

T/C

T/C

PRESSURERELIEF VALVE

SET TO 850 PSI


10 313871E


313871E 11

Main Panel

Key:AA Alarm HornAB Main Power IndicatorAC Iso Agitator Speed Control Turn-DialAD Human Machine Interface (HMI)AE Emergency Stop

AF Control Power Push-button/IndicatorAG Poly Agitator Speed Control Turn-DialAH Main Power Lockout BarAJ Main Power SwitchAK Main Panel Vents

Safety

Emergency Stop

There is one Emergency Stop located at the main elec-tric console and one Emergency Stop at the end of eachinstalled pour pendant. Pushing any Emergency Stopwill turn off control power and stop all motors. TheEmergency Stops stay in position when hit, so beforecontrol power can be turned on they must be reset bytwisting and pulling out.

Lockout

A lockout has been provided to lock the main power offand to lock the main panel door closed. To lockout themachine, first turn the machine off by turning the mainhandle to the off position. Then, while wiggling thepower handle, pull out the horizontal black bar on thehandle. While holding the bar in the out position, insert apadlock through the open area in the bar and lock.

FIG. 1

1

Only installed if the machine has a variablespeed agitator for that chemical.

1

1

AA

AB

AC

AD

AE

AF

AG

AH

AJ

AK

AK

ti11592b


12 313871E

Human Machine Interface (HMI) Screens

When main power is turned on, the HMI will automatically turn on.

Main Menu Screen

Key:BA Set System ClockBB Login/LogoutBC Current Alarm StatusBD Last Shot DataBE Screen Access buttons sectionBF Main Menu screen accessBG Status screen accessBH Machine Control screen access

BJ Tank Control screen accessBK Pour Time Editor screen accessBL Setup screen accessBM Flow Control screen accessBN Scaling screen accessBP Alarm HIstory screen accessBR Alarm Status screen accessBS Display System Info

FIG. 2

BA BB

BD

BE

BF BG BH BJ BK BL BM BN BP BR

BCBS


313871E 13

Last Shot Data

The control system records the actual shot time after theshot has occurred. The control system also captures theflow rates and ratio for the last shot. The flow rate is cap-tured shortly after the shot begins.

Login/Logout

To gain access to the Scaling Screen, the user mustlogin in as a Maintenance Operator (Password 10). TheFactory user name is reserved for Graco factory person-nel to set initial parameters on the machine. Logged inas a Default user allows access to all other functions notreserved for the Maintenance/Factory users. The scal-ing screen will not be accessible to a Default user.

Setting the System Clock

To adjust the system clock, first turn on main power andthen control power. When the HMI finishes loading theMain Menu screen, select “Set System Clock.” Thenselect each date and time button in the “PanelViewClock/Calendar” screen to enter the current information.There will be a short delay between hitting the returnarrow and the new information being displayed on thePanelView screen.

Enter the hour item as the 24-hour time. For exam-ple, 1 PM is entered as “13”. The machine will auto-matically convert the time in the upper left corner ofthe screen to display the appropriate AM/PM time.


14 313871E

Status Screen

Key:CA HeaterCB Agitator StatusCC Tank LevelCD Auto-FillCE Heat ExchangerCF Metering Pump MotorCG Fluid FlowCH Circulation ValveCJ MixHead Hydraulic Unit StatusCK Flowrate (grams per second)CL MixHead Piston Position RectanglesCM Calibrate mode

CN Automatic modeCP Manual modeCQ MAG drive temperatureCR Fault StatusCS Night Mode StatusCT Linear Pump DirectionCU Hydraulic Pump Motor SpeedCV Linear Pump Position

In the figure below, only the Iso side has beenlabeled. The items on the Poly side are the sameas those on the Iso side.

FIG. 3

4

5 16

2

1

Status is indicated by a red background and the word “OFF” or a green background and the word “ON”

The path the fluid follows is indicated by these lines. When the line is gray, no fluid is in that section. When it iscolored, there is fluid passing through that section.

Only shown when Night Mode is activated.

Red indicates heating, black indicates no action.

The approximate current fluid level is shown on the screen.

Gray indicates no action, red for iso or blue for poly indicates refilling.

Shown on all screens.

1

2

3

4

5

6

9

CA

CBCC CD

CF

CG

CH

CK

CL

CM

CN

CPCQ

9 CRCS 3

CTCUCV


313871E 15

Manual, Automatic Modes

With control power on, either of these modes can beselected. When a certain mode is selected, the relatedbutton will turn green.

System Status Indicators

The status of all system conditions is shown. Thisincludes various temperatures and pressures through-out the system. The relative position of these sensors isshown schematically on the screen. Other system indi-cators include motor status, tank level, temperature con-trol, and auto-fill status.

MixHead Status Indicators

The Status Screen includes several indicators that showmachine operation status.

MixHead Pour Ready Indicator

• shows green when all requirements are made forbeginning a pour besides pressing the start button.

MixHead In Cycle Indicator

• shows green when a pour has been started and thecontrols are in the stages of a pouring operation

MixHead Pouring Indicator

• Shows green when the control system has com-manded a pour. This occurs regardless of whetherthe MixHead is turned on or off.

Manual Control

• Manual Control allows the operator to dispensematerial without a remote (robot) signal.


16 313871E

Manual Control Screen

Service Mode

Service mode allows the operator to open the gun forservice under no load. The Open/Close Service ModeGun Control buttons will not be active unless the ServiceMode button is pressed. The Service Mode button shutsboth pumps down to eliminate the chance of materialbeing dispensed while the gun is being serviced.

NOTE: The gun may still dispense material because ofthe pressure on the day tanks. Ensure that the gun isalso in service mode to prevent this from occurring.

Manual Mode Gun Control

Manual Mode Gun Control allows the operator to dis-pense material manually from the HMI. The material willdispense for the duration of time assigned to the chan-nel set. The time duration can be set for each channelunder the Pour Time Editor.

Automatic Mode Status

The Automatic Mode Status section is a visual statusindicator for the communication between the RCmachine and the robot. The machine must be in AutoMode for the indicators to function. If the RC machinereceives a signal from the robot while in manual mode,the indicator will show the signal, but the signal will beignored. For further detail on this interface, refer to theRobot Interface section in this manual.

FIG. 4


313871E 17

Machine Control Screen

Key:DA Low Level Bypass On/Off ControlDB Gun EnableDC Iso/Poly Motor Start/StopDD Iso/Poly Agitator Motor Start/Stop

DE Night Mode On/OffDF Flow InformationDG Poly Pump Control

Motors Start and Stop Buttons

These buttons control whether a specific motor is run-ning and the current status of each motor will be dis-played below each set of buttons.

System Outlet Conditions Data

The data along the bottom of the screen for flow, ratio,pressure, and temperature display the machine's outletconditions.

Poly Pump Mode

These buttons control the position and function of thelinear poly pump. The retract button retracts the pumprod to prevent build up along the working stroke length.This prolongs seal life and should be used anytime theequipment is shut down for maintenance or an extendedperiod.

FIG. 5

DA

DC

DD

DE

DF

DB

DG


18 313871E

Tank Control Screen

Key:EA Auto-Fill On/OffEF Fail to Fill Alarm Delay

EG Fill Delay

Iso, Poly Temperature Control

The Temperature Control Screen is accessible by press-ing the Temperature Control button. See TemperatureControl Screen on page 19.

FIG. 6

EF

EGEA


313871E 19

Temperature Control Screen

Supply Heater Temperature Control

These buttons are used to turn temperature control(heaters) on or off. When a metering pump motor is onand the associated temperature control is on, the indica-tor below will indicate ON and when it is off it will indi-cate OFF. When temperature control is on but theassociated metering pump motor is off, the indicatorbelow will show “Permitted.” If the temperature control isoff for any reason, the indicator will display “not permit-ted” to show that the temperature control will not turn onwhen the metering pump motor is turned on.

The element temperature is the temperature measuredby the probe on the heater element. The Iso/Poly tem-perature is the material temperature measured by theprobe diretly upstream of the respective flowmeter.

Hose Temperature Control

These buttons are used to turn the hose temperaturecontrol on or off. The Low Temp and High Temp are thealarm limits for the respective hose temperature setpoint. The Output percent shows the output of the tem-perature controller to the heated hose. The TemperatureController automatically controls the output to theheated hoses. The Output percent displays the outputpercent of the temperature controller. When the Outputpercent is 100, the temperature controller is full on heat-ing.

FIG. 7


20 313871E

Pour Time Editor Screen

Key:FA Preset Pour Timers, seconds durationFB Press Interface Automatic Mode Pour TimeFC First Group

FD Previous GroupFE Next GroupFF Last Group

The Pour Time Editor screen allows entry of a pour timepreset for each of the 99 available channels. To accessdifferent groups of presets, push the “First Group”, “PrevGroup”, “Next Group”, and “Last Group” buttons. Tochange a particular pour time preset, select that buttonand enter the new time.

“TIMER #” is the “channel” number shown on the statusscreen. The selected channel, or timer, can be changedonly in the Manual Control screen.

FIG. 8

FA

FC

FD

FE

FF


313871E 21

Setup Screen

See Settings section on page 35 for more information.

Night Mode On/Off Time

See Night Mode Operation on page 33 for more infor-mation.

Blocking Valve/Gun Close Delay

Sets delay time for blocking valve/gun close delay. Thisis used to offset any delay as the blocking valve or gunwears.

The blocking valve delay is the duration of time theblocking valve will wait to close after receiving a pourcommand. This is to account for the slower opening ofthe gun. The gun close delay is the delay after the signalis removed before the gun closes.

Poly High/Low Pour PSI

The poly pump is equipped with a pressure transducer,which monitors the outlet pressure of the poly pump.The poly high/low pressure are the maximum and mini-mum pressure settings and serve the same function asthe pressure switches found on the iso pump.

As a mechanical backup, a pressure relief valve islocated on the hydraulic power pack limiting the hydrau-lic pump. It is factory set to 850 psi which allows the polymaterial pump to build pressure up to 3200 psi.

FIG. 9


22 313871E

Flow Control Screen

Manual Flow Control

Enables use of the Manual Mode Motor Percent Set-points. When in Manual mode, motor speed remainsconstant.

Automatic Flow Control

Enables use of the Automatic Mode Setpoints andmachine will continually adjust motor speeds to meetsetpoints.

Flow Rate/Ratio Warning/Shutdown Tolerance

Allowable error in flow rate/ratio when automatic mode isenabled for flow control. When outside the warningrange, an alarm will be displayed. When outside theshutdown range, the MixHead will not shoot.

High/Low Speed Calibration Percent

This is the high and low calibration speeds that will beused when the Start Calibration button is pressed.

Start/Stop Calibration

Pressing the Start Calibration button will calibrate themotor speed to the flow rate input on the Flow Controlscreen. The motors will spin at high speed for one min-ute then at low speed for one minute. If at any time thecalibration needs to stop, press the Stop Calibration but-ton or hit the Emergency Stop.

FIG. 10


313871E 23

Scaling Screen

Key:JA Current K Factor ValueJB Test Shot Actual Weight (grams)JC Iso Calibration Shot start buttonJD Poly Calibration Shot start buttonJE Calibration Shot stop buttonJF Temperature Log/Gains screen access

JG Flowrate Filter On/OffJH Last Shot DataJJ Calculate New K Factor buttonJK Flow Meter Reading (grams per second)JL Test Flowrate (grams per second)

See Calibrating Machine-Calculated Mass Flow onpage 41 for more information.

Flowrate Filter

The flowrate input and display may be filtered to providea more stable display of flow rate by turning the filterON. Instantaneous flow rate changes are displayed withthe filter turned off.

This screen is only accessible when logged in asone of the “Supervisor” usernames.

FIG. 11: This screen is for qualified technicians only and is password protected.

JA JB

JC

JD

JE

JF

JG

JH

JJ

JL

JK


24 313871E

Temperature Log/Gains Screen

Key:KA Up ScaleKB Down ScaleKC PenKD Move LeftKE HomeKF End

KG PauseKH Move RightKJ Poly Heat GainKK Poly Cool GainKL Iso Heat GainKM Iso Cool Gain

See Temperature Gains section on page 36.

This screen is accessible from the Scaling screen.

FIG. 12: This screen is for qualified technicians only and is password protected.

KDKC

KM

KL

KK

KJ

KE

KA

KF KG KH

KB


313871E 25

Alarm History and Alarm Status Screens

See Troubleshooting section on page 47 for Alarm screens details.


26 313871E

Tanks

To ensure proper supply of material to the MixHead, themachine includes temperature conditioned and pressur-ized day tanks.

Temperature conditioning is accomplished by circulatingthe chemicals through a heat exchanger and optionalheater in the return line to tank. The operator-selectedtemperature is maintained by the program.

To assure adequate chemical pressure at the inlet to themetering pump, the tank must be pressurized with dryair to the specification listed in the table at the beginningof the Settings section on page 35.

The fluid level in the tank must be manually maintainedbetween 60% to 90% full to assure proper temperatureand aeration control, unless the optional Auto-Fill sys-tem is installed. A tank fluid level sight gauge (MH) isalso provided.

Should the pressure in a tank rise excessively while thetank is refilling, an operator adjustable pressure reliefvalve is provided to assist the regulator in bleeding thepressure. The recommended set point for this valve islisted in the table at the beginning of the Settings sec-tion on page 35.

Level Sensor

A sensitivity adjustment is provided for the level sensorsto compensate for various liquid properties. Turn clock-wise to increase sensitivity and counterclockwise todecrease sensitivity.

Metering Pump Inlet Filter

Air Pressure System

The air supplied to the machine must be dry. To removeexcess moisture and particulate matter from the shopair, a water separator is provided. For the day tanks only,a desiccant air dryer is provided to charge the day tanks.To prevent contamination of the air system by a reactionof the iso fumes with the poly fumes, the systems areisolated by means of separate check valves.

Adjust Day Tank Settings

See Day Tank Settings section on page 39 for moreinformation.

CAUTION

Relieving tank pressure may introduce moist air intothe system causing crystallization and damage to themachine.

The pumps must never be run dry. If the meteringpump is not properly supplied with fluid and pressureduring operation, cavitation will result. This will dam-age the pump and will lead to an “off ratio” condition.

CAUTION

The metering pump inlet filter prevents particulate mat-ter from damaging the precision metering pumps. Thefilter element is a basket type and should it becomeclogged, it will cause cavitation of the pump resulting indamage to the pump. Therefore, it is necessary that thefilter be properly serviced at all times. See Mainte-nance section on page 44.

The minimum recommended supplied dry air pres-sure is listed in the table at the beginning of theSettings section on page 35.

Setup

313871E 27

Setup

The machine is assembled on a heavy-duty steel framethat accepts all the major operating components. Themachine will arrive from the factory pre-assembled,completely tested and ready for installation. If the unitincludes a boom, the unit will come fully assembled withthe boom detached. Setting the unit in place, providingelectric service to the main electric console, connectingthe air supply, servicing the hydraulic and day tanks,connecting the hoses and gun, and, if included, install-ing the boom is required.

Prior to installing the machine, check for any damagethat may have occurred during transit. If any damage isfound, notify Graco immediately.

The machine is to be installed on a flat surface in anarea that permits easy access to all areas of themachine for maintenance and operation.

The metering unit was plumbed, wired and tested at thefactory. For transporting purposes, the unit was drainedof all fluids and the chemical hoses were detached.

The machine has been designed to prevent the acciden-tal connection of chemical hoses to the wrong source.The Iso pressure hose is color coded red for pressureand red/white for return. The Poly pressure hose iscolor-coded blue for pressure and blue/white for return.

Avoid breathing of vapors and contact with Isocya-nate as some people have severe allergic reactions.See Isocyanate Hazard on page 6.

Setup

28 313871E

Connecting Electrical Cord

All Models: Connect three power leads to L1, L2, andL3. Connect green to ground (GND).

Power cord is not supplied. See following table.

Model Voltage AmpsCord Specification

AWGSN8044 460 47 8

ti3248a

L1

L2L3

GND

Setup

313871E 29

Day Tanks

Tanks

Connect all hoses and slowly pressurize each tank whilechecking for any leaks. See Settings section on page35 for suggested pressure procedure.

Chemical Feed System

Each day tank has an inlet port on the back, where thechemical feed line gets connected.

Each tank has an auto-fill air solenoid valve located onthe center column between the two tanks. Air lines needto be run from these air solenoid valves to the properfeed pump.

Robot InterfaceThe following information is the typical sequence ofoperation for a Robot Dispense Command.

1. The Robot System is placed in the proper state forautomatic cycle.

2. The RC System is placed in the proper state forautomatic cycle (remote mode).

3. The RC System turns on the “RC System Ready forAutomatic Cycle” signal.

4. The Robot System turns on the “Robot High Pres-sure Request” signal.

5. The RC System goes into high-pressure recircula-tion mode and readies itself for dispensing

6. The RC System turns on the “RC System Ready forDispense” signal.

7. The Robot System turns on the “Robot System Dis-pense” command.

8. The RC System opens the spray gun (begins to dis-pense) and the “RC Dispensing” signal is turned on.

9. The Robot System turns off the “Robot System Dis-pense Command” signal.

10. The RC System closes the gun (stops dispensing)and turns off the “RC System Dispensing” signal.

11. At this point in the sequence, the spray process canbe repeated by returning to step 7 or the robot canreturn the RC System machine to low-pressurerecirculation mode by turning off the “Robot SystemHigh-Pressure Request” signal

Blocking ValveTo provide the ability to set the Iso and Polyol dispenserate and pressure, a blocking valve and back-pressureregulator valve are provided. When the signal is sent todispense and the RC machine is in the proper state, theblocking valve will close and the air solenoid will open toallow the gun to dispense. When the machine is inhigh-pressure recirculation mode, the pressure can beset with the back-pressure regulator. Since the gun isoperated by an air solenoid, a hydraulic power pack isnot installed in this machine and will differ from the stan-dard RC machine in this regard.

NOTE: To prolong the life of the back-pressure valve,remove the regulator handle and fill the cavity withMesamoll. Verify this monthly, more often dependingupon conditions and usage.

To provide greater temperature control of the Polyol andIso materials, a low-pressure re-circulation circuit is pro-vided. This bypasses the regulator and allows the mate-rial to be temperature controlled under low pressure.

Blocking Valve

High Pressure Regulator

Low Pressure Circulation Valve

New Machine Maintenance

30 313871E

New Machine Maintenance

Metering Pump Inlet Filter

During the first week of operating a new machine, the fil-ter should be inspected every other day. If the element isdirty, clean it with solvent or replace it with a new one asrequired. See Check/Replace Metering Pump InletFilter on page 45 for instructions.

Start-Up

313871E 31

Start-Up

See Main Panel section on page 11 for more informa-tion.

1. Purge air from metering pump. See Maintenancesection on page 44 for procedure.

2. If the machine is locked-out, remove the lock andpush the black bar back into the power handle.

3. Turn on main power by turning the power handle soit points to “ON.”

4. When the HMI reaches the main menu screen, gen-eral settings can be changed.

5. Turn on the control power by hitting the greenpush-button on the main panel. The button will be litwhen control power is on.

6. Turn on the pump motors.

Pumpline

Before starting the Metering Pump Motors

• Tank levels should be checked

• All ball valves blocking normal chemical flow shouldbe opened

• Blanket pressure on each tank should be set

• Air in metering pumps must be purged. See PurgeAir from Metering Pump on page 44.

• Manual or Automatic Mode selected (see PouringOperation, page 32)

Requirements for Operation

• Control Power on

• Night Mode off

• Iso and Poly Metering Pump Overload alarm inac-tive

• Iso and Poly Metering Pump Inlet Low-Pressurealarm inactive

• Iso and Poly High-Pressure alarms inactive

• Iso and Poly Tank Low-Level alarms inactive.

See Alarms List, page 48, for more information.

Starting Metering Pump Motors

Navigate to the Machine Control screen then turn on thedesired material pump motors.

The machine operates at high pressure and highvoltage. Be careful during operation and always wearthe appropriate protective gear.

If an Emergency Stop has been pressed, it willneed to be rotated and pulled out to be reset beforecontrol power can be turned on.

Before turning on the pump motors, make surethere is sufficient chemical in both day tanks andthat the day tank air pressure is at the suggestedsetting. See Settings section on page 35.

If any of the below requirements are not met, theiso and poly metering pump motors will stop and/ornot be permitted to start.

Pouring Operation

32 313871E

Pouring Operation

Low and High PressureCirculationWhen the metering pump motors are first turned on, themachine will enter low pressure circulation. After thatthe machine will stay in or return to low pressure circula-tion if the following conditions are met.

• A pour has not occurred since the metering pumpmotors were started

• If the preset High Pressure Hold Time has elapsedsince the last pour occurred and calibrate mode hasnot been selected.

When any of the following conditions are met, themachine will be in high pressure circulation.

• The pour start button has been pressed but Pres-sure-Build Time has not yet elapsed

• A pour has finished but High Pressure Hold Timehas not yet elapsed

Pouring RequirementsThe following requirements must be met in order for apour to occur.

• Main Power on

• Control Power on

• Night Mode off

• Manual or Automatic Mode selected

• Iso and Poly Metering Pump Motors on

• Iso and Poly Fail To Build Pour Pressure Alarm inac-tive

• Iso and Poly Low Pour Pressure Alarm inactive

• Iso and Poly Tank Low Level Alarms inactive

If all of the above requirements are satisfied, then the“MixHead Pour Ready” indicator on the Status Screenwill be green, see page 14.

Beginning the PourAfter both streams reach the required pour pressure andthe preset pressure build time elapses, the MixHead iscommanded to open and the pour occurs.

Night Mode Operation

313871E 33

Night Mode Operation

Night Mode is used to maintain chemical temperatureand to circulate the chemicals in low-pressure circula-tion during periods when the machine is not is use, suchas at night or over a weekend. At specified intervalsNight Mode cycles the pumps on and off. If installed, thetemperature control may also be cycled on and off. Dur-ing Night Mode, the agitators may be turned on or offwhen desired but will not cycle on or off with the“on-time” and “off-time” periods. To run agitators, simplyturn them on as usual either before or after beginningNight Mode.

When Night Mode is turned on, the period of time knownas “off-time” begins. The machine stays at rest for thespecified amount of time, which will be displayed on thescreen and counted down until the time has elapsed.

When the specified duration for off-time has elapsed,the period known as “on-time” begins. During on-time,the Iso and Poly Pumps are on. If installed, the Temper-ature Control will also be activated. Just as in off-time,the amount of time remaining will be displayed on thescreen. When on-time has elapsed, the pumps areturned off and off-time begins. This sequence of goingfrom off-time to on-time and back will continue untilNight Mode is turned off.

To see how the night mode information is displayed, seeStatus Screen, page 14.

Starting Night Mode

A small “Ready” indicator is located just under the words“Night Mode” on the Machine Control Screen. The“Ready” indicator on the Machine Control Screen willshow green when all requirements for turning NightMode on have been satisfied. If the “Ready” indicator isnot green, then Night Mode cannot be turned on.

The following requirements must be met to start nightmode.

• Main and Control power on

• Iso Pump turned off

• Poly Pump turned off

Requirements for ContinuingNight ModeIf any of the following requirements are not met, nightmode will stop.

• Control power on

• Manual mode selected

• Iso and Poly Pump Motor Overload alarms inactive

• Iso and Poly Metering System Inlet Low-Pressurealarms inactive

• Iso and Poly High-Pressure alarms inactive

• Iso and Poly Tank Low-Level alarms inactive

CAUTION

Night mode enables machine operation when person-nel are not present. If the machine encounters a prob-lem during Night mode, such as a hose rupture orelectrical problem, property damage may result.

See FIG. 5 on page 17.

Once Night Mode is on, the previous items cannotbe started until Night Mode is turned off.

Shutdown

34 313871E

Shutdown

Overnight/WeekendIf using Night Mode to circulate chemicals and maintainchemical temperature, see the Night Mode Operationsection on page 33. Otherwise, follow these steps.

1. Turn off all motors using the Machine Controlscreen.

2. Turn off main power and lockout. See Lockout onpage 11.

Long-Term Shutdown

1. Turn off all motors by using the Machine Controlscreen.


3. Empty both day tanks completely. See Empty theDay Tank on page 46.

4. Empty metering pump inlet filter by unscrewingdrain plug.

5. Empty metering pumps by unscrewing drain plug onbottom of pump.

6. Using a bucket to catch spilled material, removelowest hose from heat exchanger. This will emptythe heat exchanger and heater, and all chemicallines above.

7. Tighten metering pump drain plug and reattach heatexchanger hose.

8. Fill each tank 1/2 full with mesamoll.

9. Remove lock on main power.

10. Turn on main power and control power.

11. Run the system in manual mode for 45 minutes.See the manual mode subsection in the Settingssection on page 35.

12. Repeat steps 3 through 11 until the machine is thor-oughly flushed.

13. Turn off all motors using the Machine Controlscreen.


CAUTION

Do not disconnect or relieve tank pressure. Dry airpressure must be maintained at all times.

The system must be completely flushed beforelong-term shutdown to prevent chemical crystalliza-tion within the MixHead, metering pumps, tanks,and chemical lines.

Settings

313871E 35

Settings

Temperature ControlThe high and low temperature setpoints on the HMI areused to alert the operator of an out-of-limit condition.When these alarms are triggered, the pumps will stillfunction and pouring will not be stopped.

There is a mechanical heater switch that will shut offpower to the heater if the chemical temperature goesabove the setting. The pumps will continue to run if theheater is shut off so that the chemical can be cooled byflowing through the Heat Exchanger.

Built into the HMI program there is an absolute hightemperature alarm that will shut down the pumps whentriggered.

If a MAG drive motor is installed, a MAG drive over-tem-perature alarm is provided to prevent motor overheating.See table at beginning of this section for alarm setting.

Temperature Control On/Off

Temperature Control is turned on/off from the Tank Con-trol screen, see FIG. 6 on page 18. With TemperatureControl turned on, the heat exchanger and heater willwork to maintain each chemical temperature to the inputtemperature setpoint. The heat exchanger works to coolthe fluid with water from the inlet. Water inlet valves con-trol cooling by cycling open and closed as necessary.The heater works to heat the material by exposing thechemical to heated rods that are turned on and off asnecessary.

Temperature Setpoint

The temperature setpoint is the goal temperature for thechemical. The machine will automatically maintain thetemperature of the chemical within a reasonable rangefrom the input temperature setpoint based on the cur-rent gain settings, see Temperature Gains, page 36.

Temperature Switch Pressures MAG drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170° F (76.7°C)Chemical Absolute High Temperature . . . . . . . . . . . . . . . . . . . 180°F (82.2°C)Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180°F (82.2°C)MixHead Hydraulic Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160ºF (71.1°C)

Pressure Switch Pressures Max Metering Pump Outlet . . . . . . . . . . . . . . . . . 3200 psi (22.0 MPa, 220 bar)Min Metering Pump Outlet(in high pressure mode). . . . . . . . . . . . . . . . . . . . 1500 psi (10.3 MPa, 103 bar)Min Metering Pump Inlet . . . . . . . . . . . . . . . . . . . 10 psi (0.068 MPa, 0.68 bar)

Settings Day Tank Operating Air Pressure . . . . . . . . . . . . . . 40 psi (0.27 MPa, 2.7 bar)Supplied Air Pressure . . . . . . . . . . . . 80-120 psi (0.55-0.83 MPa, 5.5-8.3 bar)Day Tank Pressure Relief Valve . . . . . . . . . . . . . . . 75 psi (0.51 MPa, 5.1 bar)Supplied Water Pressure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 psi (2.76 bar)Supplied Water Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°F (18°C)

CAUTION

The temperature control should always be turned onwhen the machine is turned on unless there is a spe-cific reason not to. With the temperature controlturned off, the chemical temperature will slowly heatup until it eventually triggers one of the over-tempera-ture alarms. If the MAG drive over-temperature alarmcaused the shutdown, the machine will not be able tobe started until the machine has cooled to signifi-cantly below the over-temperature setting.

Settings

36 313871E

High Temperature Setpoint

The high temperature setpoint is the temperature atwhich the high temperature alarm will be triggered tonotify the operator that there is a problem and themachine should be inspected for the cause. This alarmis disabled for the first thirty minutes of operation toallow the chemical temperature to stabilize withoutunnecessary alarms. The suggested high temperaturevaries by chemical but should be the highest tempera-ture at which the chemical will react as desired whenmixed at the MixHead.

Low Temperature Setpoint

The low temperature setpoint is the temperature atwhich the low temperature alarm will be triggered tonotify the operator that there is a problem and that themachine should be inspected for the cause. The lowtemperature setpoint should be the lowest temperatureat which the chemical will as desired react at the Mix-Head.

Temperature Gains

Gains are shown on the Gains Control screen, see FIG.12 on page 24. This screen is accessed from the Scal-ing screen, see FIG. 11 on page 23. Gains control twothings: temperature fluctuation from the setpoint andheating time at startup. The default setting for all fourGains is “100”. This setting will maintain a reasonablemargin for temperature as well as a reasonable time forheating at initial startup.

If the temperatures are not controlled to your desire withthe gains set to the default settings of “100”, you may beable to adjust the gains to make the machine work betterfor your application. Things to consider when adjustingthe gains:

• It is recommended that all four gains be set to thesame number

• Higher gains will lead to faster heating at initialstartup but will increase the temperature fluctuation

• Lower gains will lead to smaller temperature mar-gins and slower heating at initial startup

• Lower chemical flow rates require higher gains tokeep the materials from overheating

• Higher flow rates may accept lower gains withoutoverheating

To adjust the gains, first turn off the chemical pumpmotors, then navigate to the Scaling screen and select“Temp Gains”. Ensure that all four gains are shown as“100.” If not, set them to the factory setting of “100”, turnon the chemical pump motors, and let the chemical tem-peratures stabilize into a pattern check whether adjust-ment is needed.

If you wish to change the gain settings, turn off thechemical pump motors, and alter the gain settings to getthe desired results as suggested in the previous para-graphs. Be aware of the temperatures while waiting forthe machine to stabilize into a pattern. If at any time thechemicals begin getting too hot, hit the Emergency Stopand reset the gains to 100. Repeat the procedure untilchemical temperatures are maintained as desired.

CAUTION

Adjusting the temperature gains should only be per-formed by a technician knowledgeable in the opera-tion of this machine. Incorrect adjustment of thetemperature gains can lead to overheating, erratictemperature control, and/or poor chemical reaction atthe MixHead during pours due to poor temperaturecontrol.

If the temperature gains have been altered andtemperature control is not performing as desired,reset all four gains to “100.”

If Night mode is used then the chemical tempera-ture is maintained, so higher gains are not needed.

CAUTION

Lowering the gains can lead to the materials andpumps overheating.

The procedure below will help to find gains that willmaintain temperature within a desired margin, butwill also effect warm-up time.

Settings

313871E 37

To check initial heating time, once the chemicals havecooled to ambient temperature turn on the pumps andheaters. If it takes too long to heat up, either raise thegains or consider using Night Mode to maintain chemi-cal temperature during down-time.

Heated Hose and Power ControlSystem

Please refer to the included heated hose manual,309572, for safety and warning instructions regardingthe installed heated hoses.

The Hose Power Control System automatically main-tains an optimum power setting for hose heat systemsbased upon the temperature value inputted by the oper-ator in the software. The system eliminates the need formanual adjustment of transformer tap settings or man-ual hose heat power control. The transformers and con-trollers are located inside the two side cabinets mountedto the main electrical enclosure.

When troubleshooting the system, input a temperaturethat is higher than the current hose temperature to turnthe hose heaters on. Referencing the following image,ensure the green signal light above terminal #4 is on.Also verify that the orange current limit light above termi-nal #5 is on.

As the hose reaches the commanded temperature, theorange current limit light will flicker off slowly, followed bythe green light.

If you have a true RMS AC current meter, you can checkone of the hose cables for 45 amps AC +/- 2 amps whilethe green signal light and orange current limit light areboth steadily on. The Hose Heat Output percent on theTemperature Control Screen should read 100%.

Pouring Settings

Iso, Poly Specific Gravity

Chemical specific gravities are entered from the Setupscreen, see FIG. 9 on page 21. This entry is used to cal-culate mass flow in grams by multiplying by the volumet-ric flow measured by the flow meter. It is very importantthat the chemicals’ correct specific gravities are entered,to ensure accurate pours.

Preset Pour Timers

Preset Pour Timers are presets that enable quick execu-tion of pours with specific durations. To execute a pourof a specific length, change one of the preset pour tim-ers on the Pour Time Editor Screen, see page 20 thenselect that channel on the Manual Control screen. Pressthe “Start” button on the Manual Control screen. Thechannel can be changed at any time and the next shotduration will be based on the preset time for the selectedchannel. If a channel has a time of “0.00” then no pourwill occur, but the pressure will build and hold in thesame manner as when a pour does occur.

Settings

38 313871E

Pressure Build Time

Pressure Build Time is set using the Setup screen, seeFIG. 9 on page 21. When a pour is initiated the machinewill build pressure to get ready to pour. Pressure BuildTime gives the machine time to stabilize pressure. Oncea pour is initiated the build timer begins and when thebuild time elapses if the machine has reached high pres-sure the pour will begin.

A new pour that is started before the machine goes outof high-pressure can begin pouring as soon as the pourpush-button is pressed. The time the machine stays inhigh pressure is called “High Pressure Hold Time.”

High Pressure Hold Time

High Pressure Hold Time is set using the Setup screen,see FIG. 9 on page 21. This is the time that the meteringsystem will stay in high-pressure after a pour has beencompleted. This time should be increased if shots are tobe performed in rapid succession, so the machine doesnot return to low pressure circulation. Allowing themachine to exit high pressure circulation between rapidshots will lead to a longer wait between shots.

Low Level Bypass On/Off

Low Level Bypass is turned on/off from the MachineControl screen, see FIG. 5 on page 17. Having LowLevel Bypass on or off determines whether the meteringpump motors will continue to run after the fluid level ineither or both tanks drops below the low level sensorduring an automatic mode shot.

During a pour with Low Level Bypass off, when the tanklevel drops below the low level sensor and that pourstops, the metering pump motors will stop.

During a pour with Low Level Bypass on, when the tanklevel drops below the low level sensor and that pourstops, the metering pump motors will continue to circu-late material.

Manual mode pours will always stop when fluid leveldrops below the low level sensor whether low levelbypass is on or off.

Pours will not be allowed to start when the fluid level ineither or both tanks is below the low level sensor.

Flow-Rate Display Filter

See FIG. 11 on page 23 for more information.

MixHead Settings

MixHead On/Off

The MixHead must be turned on to dispense chemical.When the MixHead is turned off, “dry cycling” will beenabled but will not occur unless all conditions requiredfor starting a pour are met. Dry cycling is when themachine does everything necessary to do a pour with-out opening the material piston so that material is notdispensed.

To “dry cycle” the machine, execute a pour without turn-ing on the MixHead. The machine will go through thenormal cycle for pouring, without dispensing material,and if anything is not running correctly an alarm will betriggered. Dry cycling is useful when an alarm has beentriggered and the cause of the alarm needs to be found.In that situation, reset the alarm, attempt to fix the prob-lem, and “dry cycle” the machine to test whether theproblem has been corrected, without wasting any mate-rial.

Chemical Flow Settings

Adjusting Chemical Line Pressures

Having pressure equal between the iso and poly lines isimportant for proper mixing. The usual guideline forproper mixing is to have the difference in pressures lessthan a few hundred psi. Whenever the pressures are notequal adjust the chemical line pressures, using the backpressure regulator valves.

CAUTION

Using low level bypass allows the pumps to continuerunning when an automatic shot is performed and thefluid level in one or both tanks goes below the lowlevel sensor. If your application will ever require per-forming an automatic shot that will dispense morethan four gallons from one of the tanks, be very cau-tious of fluid level before performing shots.

See Setup Screen on page 21 and Machine Con-trol Screen on page 17 for details about changingthe following settings.

Settings

313871E 39

• Main and Control Power on

• Night Mode must be off

• Appropriate Metering Pump Motors must be on

When the preceding requirements are met:

1. Select manual mode and high pressure override toput the machine into high-pressure circulation.

2. When the chemical line pressures are within200 psi, turn off the high pressure override.

Adjusting Metering Pump Motor RPM

If Variable Frequency Drive is installed then the meter-ing pump motor rpm can be adjusted individually forboth metering pump motors. This is done using the FlowControl Screen on the HMI, see FIG. 10 on page 22.

1. Navigate to the Flow Control screen.

2. Under the “Flow Control” heading, select “Manual”mode.

3. Under “Manual Mode Setpoints,” type in the desiredmetering pump motor percent for each motor.

Day Tank Settings

Adjusting Day Tank Air Pressure

1. Stop incoming air by closing the day tank incomingair valve.

2. Open day tank manual vent valve (MB).

3. Allow the day tank charge pressure to bleed to 5 psi(0.034 MPa, 0.34 bar).

4. Close the day tank manual vent valve (MB).

5. Open day tank incoming air valve (MK).

6. Adjust pressure regulator (MC) fully clockwise.

7. Set day tank pressure by turning pressure regulator.See the table at the beginning of the Settings sec-tion on page 35 for recommended setting.

8. Adjust the pressure regulator counter-clockwiseuntil it just starts to exhaust.

9. From this point, adjust the pressure regulator clock-wise one half-turn.

10. Lock valve knob in place.

The pressure for the two chemical lines should bewithin 200 psi to avoid chemical crossover at theMixHead. Chemical crossover will lead to chemi-cals mixing and curing within the MixHead and willrequire more frequent MixHead rebuilding.

Tank fumes will discharge when opening the day tankmanual vent valve.

CAUTION

Do not allow the pressure to drop below 5 psi as thismay introduce moist air to the system. This is espe-cially important during periods of extended shutdown.See Moisture Sensitivity of Isocyanates, page 6.

Settings

40 313871E

Flow Measurement Controls

Adjusting Flowrate.

With Variable Frequency Drive and with Flow Meters

If a Variable Frequency Drive is installed then the FlowControl screen will be available. This screen can used toautomatically adjust metering pump motor rpm so thatthe flow rate remains constant.

1. Turn on MixHead and Metering Pump Motors.

2. Select calibrate mode.

3. Navigate to the flow control screen.

4. Select “Automatic” from the Flow Control screen toselect Automatic mode.

5. Type in the desired grams per second and ratio.

6. If necessary, balance the chemical line pressures byslowly adjusting each orifice on the MixHead with ahex key until the pressure remains constant for atleast five seconds.

Ensure the chemical specific gravities are accurateand calibrate the flowrate accuracy before adjustingthe flowrate. See Calibrating Machine-CalculatedMass Flow on page 41.

The speed of each metering pump motor speed willcontinually adjust to achieve the input flowrate andratio.

Settings

313871E 41

Calibrating Machine-Calculated Mass Flow

The following procedure describes how to adjust themass flowrate calculated by the machine. To calculatethe mass flowrate, the machine uses the chemical spe-cific gravities entered on the Setup screen, the volumet-ric flow measured by the flow meters, and the K-Factorinputs for each chemical.

The flow meters are calibrated at the factory and willnever need to be calibrated unless harmful materialspass through them, such as solvents or materials includ-ing abrasives, which are strongly discouraged for use inthe machine.

While this procedure adjust the K-Factor, its purpose isto fine-tune the calculated specific gravity of each chem-ical used. Because of this, it is very important to haveaccurate chemical specific gravities entered on theSetup.

Parts/Tools Required

• 5 Gallon Bucket to catch spilled material

• 5 Gallon Bucket to weigh dispensed material

• Weighing scale to measure weight of empty andfilled bucket

Relieve Pressure

1. Turn off all motors.

2. Turn the main panel power handle to the off positionand lockout.

3. Relieve air pressure, hydraulic fluid pressure, andchemical line pressure. See Pressure Relief Pro-cedure on page 43.

Execute Calibration Shot

4. Unlock the main power handle and turn on.

5. Turn on control power.

6. Turn on MixHead.

7. Turn on the metering pump motor for the chemicalto be calibrated, which will have the one open orificeat the MixHead.

8. Turn on Automatic Mode.

9. Log in to gain access to the Scaling screen.

10. Measure the weight of the clean, dry, and empty cal-ibration bucket in grams. Record this measurementor tare the scale.

11. Place the calibration bucket in an appropriate loca-tion to catch the dispensed material.

12. Navigate to the Scaling screen and under “SingleStream Calibration Shots” press the button labeledas the chemical to be calibrated.

13. Press the pour start button. A shot lasting the presettime for the channel selected on the pour pendantwill begin.

Avoid breathing of vapors and contact with Isocya-nate as some people have severe allergic reactions.See Isocyanate Hazard on page 6.

This section applies only to systems with FlowMeters.

Scaling screen access is required for calibration.The Scaling screen can only be accessed whenlogged in using a specific username and passwordwhich is controlled by the owner of the machine.Before performing this procedure, ensure you canaccess the Scaling screen. To log in, navigate tothe Main Menu screen, select “Login” and type inthe appropriate username and password.

The specific gravities entered on the HMI at the fac-tory are for mesamoll which is used to test themachine before shipment. The specific gravities willneed to be updated every time new chemicals areused.

Before performing this procedure, verify the specificgravities entered on the HMI are accurate for thechemicals currently in each tank. See Iso, PolySpecific Gravity on page 37.

Because this procedure is for fine-tuning, havingeven a small amount of material splash out of thebucket will affect the calibration effectiveness. Thebucket should be held at an angle to prevent mate-rial splashing.

Settings

42 313871E

Adjust K-Factor as Necessary

14. Remove the calibration bucket, weigh, and calculatethe dispensed material weight.

15. On the scaling screen the weight of the shot calcu-lated by the machine will be shown. If this matchesthe weight of material dispensed then the machineis accurately calculating the flowrate for that chemi-cal. If so, move to step 19.

16. If the displayed weight does not match the weight ofthe dispensed material, touch the “Test Shot ActWeight (gm)” and enter the exact weight in grams ofthe dispensed material.

17. Record the current K-Factor and then hit the “Calcu-late New K-Factor.” This will change the K-Factor sothe machine will accurately calculate dispensedweight.

Repeat to Test New K-Factor

18. Repeat the procedure as desired to test flow mea-surement accuracy with new K-Factor.

Repeat for other Chemical Line

19. Repeat the calibration procedure as necessary withthe other chemical line.

Pressure Relief Procedure

313871E 43

Pressure Relief Procedure

Before performing system maintenance, system pres-sure must be relieved.

Air Pressure Relief

1. Turn off and lockout main power. See Lockout sec-tion on page 11 for procedure.

2. Close day tank incoming air supply valve. SeeTanks section on page 26.

3. Disconnect air supply hose from waterseparator (MG). See Tanks section on page 26.

4. Bleed air pressure from system by opening thepressure relief valve (MB) on top of each day tank.See Tanks section on page 26.

5. Ensure there is no air pressure in the tanks by look-ing at the pressure gauges mounted on the tanks.

Chemical Line Pressure Relief1. Turn off and lockout main power. See Lockout sec-

tion on page 11 for procedure.

2. Relieve tank air pressure. See Air Pressure Reliefprocedure.

3. Ensure there is no pressure in the chemical lines bylooking at the pressure gauges mounted above themain panel.

CAUTION

Relieving air pressure in the machine means that thesupplied dry air will be replaced by moist, room air. Donot leave the machine exposed to moist air for morethan 30 minutes.

If the machine must be left without air pressure formore than 30 minutes, the day tanks must be emptiedand thoroughly flushed. See Long-Term Shutdownon page 34.

When the metering pump motors are turned off, allchemical line pressure is relieved except for thepressure coming from the tank blanket air pressure.

Maintenance

44 313871E

Maintenance

Schedule

Purge Air from Metering Pump1. Place a small bucket under valve opening.

2. Open the bleed valve on the metering pump caseslowly.

3. Keep valve open until a steady stream of fluid, withno air or bubbles, is released from the bleed valve.

4. Close the bleed valve.

Drain the Water SeparatorThis procedure is performed with the system pressur-ized.

1. Pressurize the air system.

2. If desired, place container underneath water sepa-rator to catch expelled water.

3. Depress purge valve.

4. Release valve when all traces of water are gone.

Check DesiccantWhen desiccant is new, it will be blue. Over time, thedesiccant will fade to pink. Replace the desiccant beforeit is completely pink. The speed at which the desiccantis used will vary depending on the amount of moisture inthe incoming air supply.

Replace Desiccant

1. Disconnect the air supply.

2. Remove the desiccant bowl and service with freshdesiccant.

3. Replace the bowl and bowl guard.

4. Reconnect the air supply.

Procedure Frequency

Purge Air from Metering Pump Daily before use

Drain the Water Separator Daily

Check Desiccant Daily

Check Metering Pump Inlet Filter Weekly

Check Tightness of all Clamps and Fittings Monthly

Check Hoses for Wear Monthly

Replace PLC battery As Needed

Empty the Day Tanks As Needed

Relieve air pressure. See Pressure Relief Proce-dure on page 43.

Do not pressurize the air system without the bowlguard in place. The bowl could burst under pressure.

Maintenance

313871E 45

Check/Replace Metering PumpInlet Filter

See assembly drawings manual for filter and o-ring partnumbers.

To Remove/Inspect the Filter

1. Turn the main power handle to the off position andlockout.

2. Relieve day tank pressure. Make sure the tank airpressure gauges read zero pressure.

3. Close day tank ball valve to prevent flow from thetank to the pump inlet filter.

4. Remove filter cap and visually inspect the filter ele-ment for particles.

To Replace the Filter

5. Replace the element and o-ring as required.

6. Liberally coat the o-ring and surrounding surfaceswith a moisture free grease.

7. Ensure that the element is properly seated in thebowl and replace the cap.

8. Hand tighten the clamp.

9. Open the tank ball valve and check for leaks.

10. Apply day tank pressure.

11. Remove lock on main power.

12. Turn on main power and then control power.

13. Start motors and run for at least 60 minutes to circu-late the material that has been exposed to moist air.

Check Tightness of all Clampsand Fittings1. Turn off main power and lock out.

2. Wait until all parts are cool to the touch.

3. Walk around the machine and inspect for looseclamps and fittings.

4. Tighten clamps and fittings as necessary.

Check Hoses for WearLook for wear on all hoses where they come into contactwith anything. Over time, rubbing may wear down thehose and increase the chance for a hose rupturing.Replace all hoses with noticeable wear.

Replace the PLC battery

If a “PLC Battery Low” alarm is triggered, the battery willneed to be replaced.

1. Turn off main power.

2. If necessary, unlock the main panel door.

3. Open the main panel door.

Always relieve day tank pressure and close the tankbleed valve to prevent fluid flow to the metering pumpinlet filter. Failure to do this can lead to gettingsprayed with chemical when opening the filter.

CAUTION

Do not open the metering pump inlet filter cap imme-diately before leaving the machine at rest for a longperiod of time. This will introduce moist air to thechemical and may cause the chemical to react andnot mix properly when dispensed.

This procedure requires exposing the chemicals tomoist air. Have all necessary tools and parts nearbyto minimize the amount of time the chemicals areexposed to the moist air.

One indication that the metering pump inlet filterrequires service is the low inlet pressure alarmswhen there is adequate day tank pressure and fluidvolume in the tanks.

This procedure requires entering the main panelwhere the main power is routed. To avoid seriousinjury or death, disconnect main power source at thewall using breaker or by unplugging the machine.

Maintenance

46 313871E

4. Locate the PLC battery, which should be in the HMIon the back of the main panel door.

5. Replace battery.

6. Close main panel door and lock the main panel ifnecessary.

7. The system clock and date may need to be reset.

Empty the Day Tank

1. Turn the main power handle to the off position andlockout.

2. Close tank air supply valve (MK).

3. Depressurize day tank to approximately 5 psi.

4. Place container to catch tank fluid.

5. Open the tank outlet valve (MJ) and the tank drainvalve (ML) and empty tank into the container.

6. Be careful as the last of the tank fluid is released,there will be a semi-uncontrolled spitting of materialfrom the 5 psi charge.

7. Close the tank supply valve and replace the drainplug.

If no further maintenance is anticipated, leave the 5 psicharge of dry air on the tank. Otherwise vent the chargeto zero pressure.

See the day tank capacity in the table at the begin-ning of the Settings section on page 35. To avoid apotential mess, always prepare to collect up to thefull capacity.

CAUTION

If the machine will be left with zero pressure for morethan 30 minutes, the day tanks must be emptied andthoroughly flushed to avoid chemical crystallizationand machine damage. See Long-Term Shutdown onpage 34.

Troubleshooting

313871E 47

TroubleshootingSee the table at the beginning of the Settings sectionon page 35 for temperature and pressure alarm settings.

Alarm Status Screen

Key:RA Alarm SilenceRB Alarm Reset

RC Reset Alarm Data

Alarm conditions are indicated on the Alarm Status screen which can be selected from the menu bar along the bot-tom of all screens. A new alarm condition will cause an alarm to sound and the new alarm message will immediatelyappear in the alarm display section. Pressing the “Alarm Silence” button will silence the alarm beeper and pressing“Alarm Reset” will reset the alarm if the fault is absent. Alarms must be silenced, cleared, and reset prior to restartingany motors stopped by the alarm.

FIG. 13

RA

RB

RC

Troubleshooting

48 313871E

Alarm History Screen

This screen stores all alarms that have been triggered.

See the table at the beginning of the Settings section on page 35 for pressure and temperature switch settings.

Alarms List

Pouring Alarms

If a pouring alarm has been triggered, and the cause isunknown, “dry cycling” the machine may be helpful infinding the cause. See the MixHead On/Off section onpage 38 for more information.

Any alarm that will stop the MixHead Hydraulic Unitoperation will stop a pour.

Iso/Poly Failed To Build Pour Pressure Alarm

• This alarm occurs during pressure build. A timer inthe PLC controller will stop the pour sequence if themetering pump fails to develop minimum pouringpressure within a set time. Typically 15 seconds lon-ger than the pressure build time is allowed beforethis alarm will occur.

Iso/Poly Low Pour Pressure Alarm

• If the chemical pressure during a pour drops belowthe setting for the Low Pour Pressure Switch will betripped and will stop the pour. Improper orificeadjustment is a possible cause.

FIG. 14

Sort button. Push to sort by name or time of alarm.1

1

Troubleshooting

313871E 49

Iso/Poly High-Pressure Alarm

• The High-Pressure alarm can occur any time thepressure at the pump discharge rises above the set-ting on the high-pressure switch at the pump dis-charge. This alarm stops both the Iso and Polypumps and stops any pour in progress. This may becaused by improper orifice adjustment.

Ratio Out Of Tolerance Warning/Shutdown

• When the dispensing ratio is outside of the toler-ance specified on the Flow Control Screen thisalarm will be displayed.

Flow Rate Out Of Tolerance Warning/Shutdown

• When the total flow rate is outside of the tolerancespecified on the Flow Control Screen this alarmwill be displayed.

Iso, Poly Metering System Alarms

Iso, Poly Pump Motor Overload Alarm

• This alarm causes an immediate stop of the meter-ing pump motor. If the motor overload alarm hasoccurred, the overload button on the starter must bereset before the motor can be started.

Iso, Poly Metering Pump Inlet Low-Pressure Alarm

• This alarm is generated any time the inlet pressureat the metering pump drops below the setting of theinlet low-pressure switch. This alarm stops theaffected metering pump motor.

Possible causes for this alarm:

• Metering pump inlet filter may be clogged and needto be serviced

• Day tank pressure is too low

• Pump inlet valve is closed and need to be opened toallow fluid flow from tank

Iso, Poly Metering Pump High-Pressure Alarm

• This alarm is generated any time the pressure at themetering pump rises above the set point on thehigh-pressure switch, located at the metering pumpdischarge. Both the Iso and the Poly pump motorsstop when one of them triggers the high pressureswitch.

Tanks Alarms

Iso/Poly Tank Low Level Alarm

• This alarm will occur when the tank level reaches10%. This alarm affects the running of the pump fedby the tank and affects pouring depending onwhether the Low Level Bypass is turned on or off.

Iso/Poly Tank Auto-Fill Failed to Fill

• This alarm is triggered when the Auto-Fill fails to fillwithin the time specified on the Tank Control page.This alarm protects from overfilling the tanks in theevent one of the top fluid level sensors fail.

Iso/Poly Tank Agitator Motor Overload

• This alarm is triggered when the agitator motoroverloads.

Temperature Alarms

Poly/Iso Heater High Temperature

• This alarm is triggered when the temperaturereaches the heater high temperature switch setting.In this event, the heater will need to cool to theheater switch “on-temperature” setting.

Iso/Poly Low/High Temperature

• These alarms are triggered when the iso or polychemical temperature goes outside of the rangespecified by the high and low temperature setpointson the Tank Control screen. These alarms will nottrigger within the first 30 minutes after startup toallow for chemical temperatures to stabilize.

Iso/Poly MAG Drive High Temperature

• This alarm exists only for machines with MAGdrives. The alarm is triggered when the MAG drivetemperature reaches the high temperature settingspecified in the table at the beginning of the Set-tings section on page 35. When this alarm is trig-gered, the metering pump motors will shutdown andwill not be able to be started until the temperaturedrops below the setpoint.

Troubleshooting

50 313871E

Other Alarms

PLC Battery Low

• PLC Battery needs to be replaced. See Mainte-nance section on page 44.

Iso/Poly Absolute High Pressure

• This alarm is triggered when metering pump outletpressures exceeds the absolute high pressure set-ting.

Troubleshooting Chart

FaultAutomatic Actiontaken by Machine Solution

Iso, Poly Heater High Temp • Alarm banner• Yellow alarm light ON• Fault horn ON• Heater OFF

1. Check high temperature set point2. Check Power cube3. Allow heater to cool, reset limit switch ONE

TIME ONLY

Iso, Poly Pump High Pressure • Alarm banner• Red fault light ON• Fault horn ON• Iso pump OFF• Poly pump OFF

1. All pressure Iso, Poly valves OPEN2. Check/clean Iso, Poly jet3. Check Iso, Poly output4. Check Iso, Poly temperature5. Check DIN connector on pressure switch

Iso, Poly Pump Low Pour Pressure orFailure to Build Pressure

• Alarm banner• Red fault light ON• Fault horn ON• MixHead locked CLOSED

1. Check air supply pressure2. Adjust Iso, Poly jet3. Check Iso, Poly output4. Check Iso, Poly temperature5. Check DIN connector on pressure switch

Iso Pump Low Inlet Pressure • Alarm banner• Red fault light ON• Fault horn ON• Iso pump OFF

1. Open all metering pump inlet valves2. Check day tank air pressure3. Check for clogged inlet basket filter4. Check DIN connector on pressure switch

Tank Low Level • Alarm banner• Red fault light ON• Fault horn ON• MixHead locked CLOSED

1. Check fluid level and add fluid as necessary.Turn Auto-Fill ON if installed.

2. Adjust fluid sensor sensitivity

Dimensions

313871E 51

Dimensions

Key:A Length without Boom: 62 in. (158 cm)B Length with Boom: 134 in. (341 cm)C Width: 67 in. (171 cm)D Height without Boom: 73 in. (185 cm)E Height with Boom: 105 in. (267 cm)

FIG. 15

A

B

C

D

E

ti11590b

Dimensions

52 313871E

Technical Data

313871E 53

Technical Data

◆ Maximum flow rate given for 60 Hz operation. For 50 Hz operation, maximum flow rate is 5/6 of 60 Hz maximumflow.

Category Data

Maximum Fluid Working Pressure 3000 psi (20.6 MPa, 206 bar)

Maximum Air Working Pressure 100 psi (0.68, 6.8 bar)

Maximum Fluid Temperature 180°F (82.2°C)

Maximum Output◆ SN8044: 34.8 lb/min (15.8 kg/min)

Line Voltage Requirement See Connecting Electrical Cord, page 28

Amperage Requirement See Connecting Electrical Cord, page 28

Day tank capacity (each) 20 gallons (75.7 liters) nominal

Sound power, per ISO 9614-2 76.5 dB(A)

Sound pressure, 1 m from equipment 82.6 dB(A)

Maximum Weight 2960 lb (1345 kg), See product label on machine for individualmachine weight

Wetted Parts Aluminum, Stainless Steel, Trivalent Chromium Plated CarbonSteel, Nylon 6, PTFE, Perifluorinated elastomers & EPDMO-rings

Graco Ohio Standard WarrantyGraco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects inmaterial and workmanship on the date of sale to the original purchaser for use. With the exception of any special, extended, or limited warrantypublished by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined byGraco to be defective. This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco’s writtenrecommendations.

This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by faultyinstallation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution ofnon-Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility of Graco equipment withstructures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture, installation, operation ormaintenance of structures, accessories, equipment or materials not supplied by Graco.

This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for verification ofthe claimed defect. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts. The equipment will be returnedto the original purchaser transportation prepaid. If inspection of the equipment does not disclose any defect in material or workmanship, repairs willbe made at a reasonable charge, which charges may include the costs of parts, labor, and transportation.

THIS WARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITEDTO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.

Graco’s sole obligation and buyer’s sole remedy for any breach of warranty shall be as set forth above. The buyer agrees that no other remedy(including, but not limited to, incidental or consequential damages for lost profits, lost sales, injury to person or property, or any other incidental orconsequential loss) shall be available. Any action for breach of warranty must be brought within two (2) years of the date of sale.

GRACO MAKES NO WARRANTY, AND DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR APARTICULAR PURPOSE, IN CONNECTION WITH ACCESSORIES, EQUIPMENT, MATERIALS OR COMPONENTS SOLD BUT NOTMANUFACTURED BY GRACO. These items sold, but not manufactured by Graco (such as electric motors, switches, hose, etc.), are subject tothe warranty, if any, of their manufacturer. Graco will provide purchaser with reasonable assistance in making any claim for breach of thesewarranties.

In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from Graco supplying equipment hereunder, orthe furnishing, performance, or use of any products or other goods sold hereto, whether due to a breach of contract, breach of warranty, thenegligence of Graco, or otherwise.

FOR GRACO CANADA CUSTOMERSThe Parties acknowledge that they have required that the present document, as well as all documents, notices and legal proceedings entered into,given or instituted pursuant hereto or relating directly or indirectly hereto, be drawn up in English. Les parties reconnaissent avoir convenu que larédaction du présente document sera en Anglais, ainsi que tous documents, avis et procédures judiciaires exécutés, donnés ou intentés, à la suitede ou en rapport, directement ou indirectement, avec les procédures concernées.

Graco Ohio InformationFor the latest information about Graco products, visit www.graco.com.

TO PLACE AN ORDER, contact your Graco distributor or call to identify the nearest distributor.Toll Free: 1-800-746-1334 or Fax: 330-966-3006

All written and visual data contained in this document reflects the latest product information available at the time of publication.Graco reserves the right to make changes at any time without notice.

This manual contains English. MM 313871

Graco Headquarters: MinneapolisInternational Offices: Belgium, China, Japan, Korea

GRACO OHIO INC. 8400 PORT JACKSON AVE NW, NORTH CANTON, OH 44720Copyright 2009, Graco Ohio Inc. is registered to ISO 9001

www.graco.com

Rev 2/2010

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