Graco ProMix 239735 Instructions-Parts List Manual
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Graco ProMix 239735 Instructions-Parts List Manual

Graco ProMix 239735 Instructions-Parts List Manual

For proportional mixing of plural component coatings
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INSTRUCTIONS-PARTS LIST
Parts
Contents
INSTRUCTIONS
ProMixt Control Assembly
For proportional mixing of plural component coatings
3000 psi (21 MPa, 207 bar) Maximum Working Fluid Pressure
4000 psi (28 MPa, 276 bar) Maximum Fluid Working Pressure with Part No. 239954 High Pressure Spring Kit
3000 psi (21 MPa, 207 bar) Maximum Solvent Supply Pressure
100 psi (0.7 MPa, 7 bar) Maximum Working Air Pressure
Part No. 239735
Recognized Component
D
Intrinsically Safe for Hazardous Locations
Class I; Division 1; Group D*
* If an external power supply is connected to the control, the control
is no longer intrinsically safe and the control, as well as the power
supply, must not be operated in hazardous locations.
If a printer is connected to the control, Printer Barrier Kit 240652
must be installed to maintain intrinsic safety. If the printer is
installed without the Printer Barrier Kit, the control is no longer
intrinsically safe and the control and printer must not be installed
or operated in hazardous locations.
This manual contains important
warnings and information.
READ AND KEEP FOR REFERENCE.
Conforms to ANSI/UL
standard 2279
Certified to CAN/CSA
22.2 No. E79–11–95
EExia II A T4
98D.123384
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
ECOPYRIGHT 1997, GRACO INC.
Graco Inc. is registered to I.S. EN ISO 9001
308783
Supersedes B
First choice when
quality counts.t
Rev. C
7486A

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Summary of Contents for Graco ProMix 239735

  • Page 1 Printer Barrier Kit, the control is no longer intrinsically safe and the control and printer must not be installed or operated in hazardous locations. GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441 ECOPYRIGHT 1997, GRACO INC. Graco Inc. is registered to I.S. EN ISO 9001...

  • Page 2: Table Of Contents

    ........Graco Standard Warranty .

  • Page 3: Warnings

    WARNING INJECTION HAZARD Spray from the gun, hose leaks, or ruptured components can inject fluid into your body and cause extremely serious injury, including the need for amputation. Splashing fluid in the eyes or on the skin can also cause serious injury. D Fluid injected into the skin might look like just a cut, but it is a serious injury.
  • Page 4 D This equipment is for professional use only. D Read all instruction manuals, tags, and labels before operating the equipment. D Use the equipment only for its intended purpose. If you are uncertain about usage, call your Graco distributor. D Do not alter or modify this equipment. Use only genuine Graco parts and accessories.

  • Page 5: Icons

    Icons Product Icons Alarm air outlet Control Assembly The following icons are on the outside of the control External power connector case. They indicate air, fluid, and cable connections. See the Installation section for more information. Printer cable connector Component A fluid line connection Operator station connector Component B fluid line connection Operator Station...

  • Page 6: Operation Mode Icons

    Icons Operation Mode Icons FLOW RATE: Press to display the cur- rent flow rate the system is producing in The system is in Operation Mode when it is powered cc per minute. up. The operations that are commonly used in every- day operation appear as icons on the keypad.
  • Page 7 Icons Setup Mode Icons YEAR: Press to adjust the year setting of the clock. Level 1 Icons (continued) TOLERANCE: Press to adjust the ratio tolerance. If the system operates outside the tolerance, an alarm will occur. PURGE TIME: Press to adjust the purge time in seconds.

  • Page 8: Promix Proportioner Overview

    ProMix Proportioner Overview 7487A Fig. 1 Component A Line Gun Air Line Component B Line Operator Station Cable ProMix Control Gun Fluid Line LED Display Main Air Line Component A Supply Spray Gun Component B Supply Solvent Line Solvent Supply 51 Air Filter Air Regulator 63d Keypad...

  • Page 9: Installation

    Follow the installation schematic in the system binder illustrations. provided by Graco or contact your Graco representa- D Icons in the text refer to the icons on the equip- tive for assistance.

  • Page 10: Setup

    Installation Setup 4. Screw the air filter (51) into the purge air inlet See Fig. 3. 1. Tighten the fluid line connections between the flow meter, mix manifold, and other system compo- 5. Install a shut-off valve (J ) into the air filter (51) to nents as they may have loosened during shipment.
  • Page 11 Installation b. Connect an air line to the shut-off valve (J Gun Air Outlet Printer Cable Connector NOTE: This line supplies the air to the control Air Signal Outlet (optional) solenoids and air driven power supply and to the External Power Connector spray gun.
  • Page 12 . See Fig. 4, page 11. Use a 12–18 properly installed in the gun air line if using a Graco Vdc, 0.3 amp power supply. Do not exceed the electrostatic PROt Gun. +24 volts maximum applied voltage.
  • Page 13 Installation 14. Ground the system. See Fig. 6. Ground the solvent pails according to your local code. Use only metal pails, which are conductive, placed on a grounded surface. Do not place the pail on a nonconductive surface, WARNING such as paper or cardboard, which interrupts the grounding continuity.

  • Page 14: Operator Controls

    Operator Controls Two devices provide operator interface; they are the Operator Station, located in the spray booth, and the Keypad, located on the control. Report Button Operator Station The Operator Station consists of an Operator Switch and a Report Button. See Fig. 7. Operator Operator Switch Switch...

  • Page 15: Setup Mode

    Setup Mode The Setup Mode is accessed by turning the operator Target Ratio Setup Level switch to Standby and touching the token on the back of the Reference Card to the setup contacts on the ProMix control. See Fig. 9. Keypad 7475A Icon...

  • Page 16: Adjusting Setup Values

    Setup Mode Adjusting Setup Values 5. 2 appears on the display, indicating that the sys- tem is at level 2 setup. The first setup function at level 2 is for setting the Hour, so the last known In setup mode, the operator may adjust the values hour will be displayed.

  • Page 17: Pressure Relief Procedure

    Pressure Relief Procedure 3. Shut off the air at the spray gun. WARNING INJECTION HAZARD The system pressure must be manually relieved to prevent the system from starting or spraying accidentally. Fluid under high pressure can be injected through the Air Shutoff Valve skin and cause serious injury.

  • Page 18: Startup

    Startup 4. Turn the control air supply CAUTION on (J The ProMix pot life timer will not function properly A diagnostic test will run when used with multiple guns that are operating and the last known Target simultaneously. To avoid having mixed material set in Ratio will display on the the equipment, carefully monitor the pot life by some LED panel.
  • Page 19 Startup 9. Check that the component A and B fluid supply a. Touch the token (on the back of the reference pressure (X) is properly set for your application. Do card) to the setup contacts (Z). Number 1 not exceed the controller’s 3000 psi (21 MPa, 207 appears on the display, indicating the control is bar) maximum working fluid pressure or 4000 psi at level 1 setup.
  • Page 20 Startup Release the component A valve key to c. Hold down the solvent valve key to open close the valve. the solvent valve. g. Hold down the component B d. Trigger the gun into a grounded waste con- valve key to open the component tainer until solvent flows from the nozzle.

  • Page 21: Reporting

    Startup 15. Spray d. If the fluid output is too low, increase the air pressure to the component A and B fluid supplies or increase the regulated fluid pres- sure. a. Open the gun air shutoff valve. If the fluid output is too high, reduce the air pressure, close the manifold dispense valves further, or adjust the fluid pressure regulator.

  • Page 22: Purging

    FIRE, EXPLOSION, AND ELECTRIC SHOCK HAZARD To reduce the risk of fire, explosion, or electric shock, the air to the gun must be shut off on a Graco PROt electrostatic spray gun to ensure the electrostatic power is not on when purging. 7477A * A gun is considered high pressure when its maximum working pressure is 900 psi [6.2 MPa, 62 bar] or greater.

  • Page 23: Purging The Fluid Supply

    SHOCK HAZARD To reduce the risk of fire, explosion, or electric shock, the air to the gun must be shut off on a Graco PROt electrostatic spray gun to ensure the electrostatic power is not on when purging. 3. Shut off the air at the spray gun.
  • Page 24 Purging 7. Touch the token to the setup contacts (S). Number 11. Trigger the gun into a grounded waste container 1 appears on the display, indicating the control is until the component A fluid lines are clean. at level 1 setup. Ä...

  • Page 25: Ratio Check

    Ratio Check Check the ratio at least once per month, as part of a 1. Make sure the operator switch is set regular maintenance routine, and anytime a flow meter at standby. is changed. WARNING PRESSURIZED EQUIPMENT HAZARD To avoid splashing fluid in the eyes when performing a ratio check or purging: 7475A D Wear eye protection.
  • Page 26 Ratio Check 6. Refer to the reference card. Hold down either the 10. Compare the amount on the display to the amount in the component A beaker. For maximum accu- flow meter A key or flow meter B key racy, use a gravimetric (mass) method to deter- two seconds.
  • Page 27 Ratio Check 15. Always purge the ratio check valves after a g. Release the ratio valve purge key to close ratio check. the solvent valve. a. Make sure both component A and B fluid shut-off valves (T ) are still closed. 16.

  • Page 28: Alarm Troubleshooting

    Alarm Troubleshooting Common Causes for an Off Ratio Alarm WARNING D The flow rate is too high D Highly unbalanced pressures from the fluid supply INJECTION HAZARD system To reduce the risk of a serious injury, D Slow actuation of the component A or B valves follow the Pressure Relief Procedure on page 17 before checking or servicing Checking the Flow Rate...

  • Page 29: Dose Time Of Component A Or B Exceeded

    Alarm Troubleshooting Dose Time of Component A or B To prevent this from happening, the control will only allow the component A or B valve to remain open for Exceeded the duration of the dose time. The dose time begins Dose Time of Component A Exceeded when the flow switch detects air flow to the gun.

  • Page 30: Idle Time Exceeded

    Pot Life Exceeded 6. If necessary, install pressure regulators or a surge tank on the fluid inlets to the ProMix, to reduce the fluid supply pressure. Contact Graco for informa- tion on fluid pressure regulators. Checking the Actuation of the Valves See page 28.

  • Page 31: Service

    Mix Manifold 239732 308288 CAUTION Hardware or Software Updates Wear the grounding strap provided when servicing Check with your Graco representative periodically to the control to avoid shorting out the circuit board. see if hardware or software updates are available. 308783...

  • Page 32: Blinking Display

    Service Blinking or Blank Display 11. Slide the ribbon cable (AB) through the panel slot, align the keypad (63d) with the recessed area on NOTE: Do not exceed 100 psi (0.7 MPa, 7 bar) air the panel, and press it into place. supply pressure to the ProMix air driven power supply.

  • Page 33: Replacing The Solenoids

    Service Replacing the Solenoids 9. Connect the wire harness (95) to the solenoid electrical connector. Use the table below to help identify the failing solenoid and to properly reconnect the numbered air lines to the 10. Close the panel (63); be sure not to crimp or pinch manifold ports.

  • Page 34: Removing And Installing The Meters

    Service Removing and Installing the Meters 1. Relieve the pressure as instructed on page 17. 2. Turn off the power to the control (air and/or electri- cal). 3. Remove the front cover (2). See Fig. 12. 4. Disconnect the three fluid lines from the check valves (13).

  • Page 35: Removing And Installing The Mix Manifold

    Service Removing and Installing the Mix Manifold 9. Unscrew the integrator tube (AG). 1. Relieve the pressure as instructed on page 17. 10. Remove the ratio check valves (AH). 2. Turn off the power to the control (air and/or electri- 11.

  • Page 36: Power Supply Turbine Alternator Service

    Service 17. Install the ratio check valves (AH), integrator tube 11. Measure the resistance between each outer (AG), and integrator housing (AF). See Fig. 16. terminal of the 3-wire connector and the turbine alternator housing. The resistance should be infinite. If the resistance is not infinite, replace the 18.

  • Page 37: Accessories

    2000 hours of operation.To maintain no longer intrinsically safe and the intrinsic safety, only use this Graco kit to replace control, as well as the power supply and bearings and follow the service instructions provided printer, must not be operated in hazard- with the kit.

  • Page 38: Parts

    Parts See page 39 for Detail drawings. See page 41 for air and fluid line locations. Detail A Detail B Detail C Detail D Detail E 88, 89, 90 7498A 308783...
  • Page 39 Parts Detail A – Solenoid Detail C – Power Supply NOTE: Exploded assembly orientation reversed to clearly see parts. Ref. 74b 7630A Detail B – Flow Control 7499A Detail E – Control Panel 7514A Detail D – Static Mixer NOTE: Refer also to Fig. 16, page 35. Ref.
  • Page 40 Parts Part No. 239735 Ref. Part No. Description Qty. Ref. Part No. Description Qty. 192475 CABINET 114156 REDUCER; 1/4” x 1/2” OD push-in tube 192200 COVER, front 114157 ELBOW, union; 1/2” OD 192466 PANEL, back push-in tube 192470 PANEL, fluid access 114163 WASHER, shoulder, nylon;...
  • Page 41 Parts Ref. Part No. Description Qty. Ref. Part No. Description Qty. 110880 SCREW, cap, socket head; 114238 SCREW, cap, hex head; M4 x 35 1/4-20 UNC x 1.5 114187 SCREW, cap, hex head; 104029 LUG, ground M5 x 10 111307 WASHER, lock, external;...

  • Page 42: Dimensions

    Dimensions Dimensions, inches (mm) 14.6 (370.8) (609.6) (406.4) (406.4) (254) (114.3) 7488A 308783...

  • Page 43: Technical Data

    303, 304 SST, 17–4 SST, Tungsten carbide (with nickel binder), Chemrazr; Teflonr; CV75 NOTE: See the individual component manuals listed on page 31 for additional technical data. * Dependant on application. For more detailed information on viscosities, flow rates, or mixing ratios, consult your Graco repre- sentative. Chemraz is a registered trademark of the Green, Tweed, &...

  • Page 44: Graco Standard Warranty

    Graco’s written recommendations. This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by faulty installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or sub- stitution of non–Graco component parts.

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