Graco Reactor A-20 Operation
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Graco Reactor A-20 Operation

Graco Reactor A-20 Operation

Air operated, electrically heated plural component proportioner
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Operation
Reactor A-20
Air Operated, Electrically Heated Plural Component Proportioner
For spraying or dispensing 1:1 mix ratio materials, including epoxies and polyurethane
foam. For professional use only.
Not approved for use in European explosive atmosphere locations.
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
See page 3 for a list of models and maximum working pressures.
US Patent No. 7822326
Russian Patent No. 2359181
311511G
ENG
TI8447A

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Summary of Contents for Graco Reactor A-20

  • Page 1 Operation Reactor A-20 311511G Air Operated, Electrically Heated Plural Component Proportioner For spraying or dispensing 1:1 mix ratio materials, including epoxies and polyurethane foam. For professional use only. Not approved for use in European explosive atmosphere locations. Important Safety Instructions Read all warnings and instructions in this manual.

  • Page 2: Table Of Contents

    Ground System ......17 Graco Information ......36 Iso Pump Lubrication System Setup .

  • Page 3: Systems

    Systems Systems Maximum Fluid Heated Hose Working Pressure System Part (MPa, bar) Proportioner 50 ft (15 m) 10 ft (3 m) Model Part AP3831 2000 253831 246678 246050 Fusion Air 246101 (13.8, 138) Purge CS3831 2000 253831 246678 246050 Fusion CS CS01RD (13.8, 138) P23831...

  • Page 4: Warnings

    Warnings Warnings The following general warnings are for the setup, use, grounding, maintenance, and repair of this equipment. Additional, more specific warnings may be found throughout the body of this manual where applicable. Symbols appearing in the body of the manual refer to these general warnings. When these symbols appear throughout the manual, refer back to these pages for a description of the specific hazard.
  • Page 5 Warnings WARNING FIRE AND EXPLOSION HAZARD Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help prevent fire and explosion: • Use 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).
  • Page 6 Warnings WARNING MOVING PARTS HAZARD Moving parts can pinch or amputate fingers and other body parts. • Keep clear of moving parts. • Do not operate equipment with protective guards or covers removed. • Pressurized equipment can start without warning. Before checking, moving, or servicing equipment, follow the Pressure Relief Procedure in this manual.

  • Page 7: Typical Installation, Without Circulation

    Typical Installation, without Circulation Typical Installation, without Circulation Key for F Reactor Proportioner Waste Containers Heated Hose Fluid Supply Lines Fluid Temperature Sensor (FTS) Feed Pumps Heated Whip Hose Agitator Fusion Spray Gun Desiccant Dryer Proportioner and Gun Air Supply Hose Bleed Lines/Over Pressure Relief Feed Pump Air Supply Lines Gun Fluid Manifold...

  • Page 8: Typical Installation, With Circulation

    Typical Installation, with Circulation Typical Installation, with Circulation Key for F Reactor Proportioner Feed Pump Air Supply Lines Heated Hose Fluid Supply Lines Fluid Temperature Sensor (FTS) Feed Pumps Heated Whip Hose Agitator Fusion Spray Gun Desiccant Dryer Proportioner and Gun Air Supply Hose Recirculation/Over Pressure Relief Return Hoses Gun Fluid Manifold ti8488a...

  • Page 9: Moisture Sensitivity Of Isocyanates

    Moisture Sensitivity of Isocyanates Moisture Sensitivity of Isocyanate Hazard Isocyanates Isocyanates (ISO) are catalysts used in two component Spraying materials containing isocyanates creates foam and polyurea coatings. ISO will react with moisture potentially harmful mists, vapors, and atomized par- (such as humidity) to form small, hard, abrasive crystals, ticulates.

  • Page 10: Component Identification

    Component Identification Component Identification ti8447a ti8448a ti8481a . 3: Typical Installation 311511G...
  • Page 11 Component Identification Key: Main Disconnect Switch - Controls power to all AH Resin (B) Proportioning Pump - Draws in and circuits. It must be ON for proportioning unit to dispenses a fixed volume of resin to gun. operate. Temperature displays are lit when main switch is ON.

  • Page 12: Controls And Indicators

    Controls and Indicators Controls and Indicators Key: AK Primary Heater Switch - Controls and protects AP Park/Run Switch - primary heater. It must be ON and lit green for • PARK - Use this position for shutdown. Stops air primary heater to operate. motor at bottom of stroke with proportioning pumps in retracted position when trigger is AL Hose Heater Switch - Controls and protects hose...

  • Page 13: Pressure Relief Procedure

    Pressure Relief Procedure Pressure Relief Flushing Procedure Flush equipment only in a well-ventilated area. Do not spray flammable fluids. Do not turn on heaters while flushing with flammable solvents. 1. Turn off feed pumps and agitator if used. • Flush out old fluid with new fluid, or flush out old 2.

  • Page 14: Setup

    Setup Setup Locate Reactor A-20 Electrical Requirements 1. Locate Reactor A-20 on a level surface and bolt in place to the floor with 3/8 in. (10 mm) bolts. • Two bolts through the 2 in. (50 mm) deep caster Improper wiring may cause electric shock or other bushings in the rear.

  • Page 15: Configure To Supply Power

    Setup Configure to Supply Power green to ground (GND). See page 16 for proper jumper positions. Disregard terminal numbers on disconnect switch blocks. Wire to positions shown. Both cord connection AND jumper positioning steps on page 16 must be completed. Step One - Connect Electrical Cord Disregard terminal numbers on disconnect switch blocks.
  • Page 16 Setup Step Two - Reposition Power Jumpers For 230V, 1 Phase and 230V, 3 Phase Installations, change jumper positions as shown below. Machine is shipped with jumpers in the fail-safe 380 3Ø position. Find location of Power Jumpers. 1. Remove upper rear control cover screws and cover. 2.

  • Page 17: Ground System

    Setup Ground System 2. Connect and tighten B- supply hose (J) to 3/4 NPT swivel fitting (GG) on B- inlet ball valve (U), and to resin transfer pump. • Reactor: is grounded through power cord; see page • Spray gun: connect whip hose ground wire to FTS; see page 18.

  • Page 18: Connect Fts And Heated Dual Whip Hose

    Setup Connect FTS and Heated Dual Whip Hose 4. Connect fluid hoses to FTS (J). NOTICE To prevent damage to probe, do not kink or To use 1/2 in. (13 mm) ID fluid hoses, excessively bend hose. Do not coil hose remove the adapters from the propor- tighter than the minimum bend radius of 3 ft tioner fluid manifold and install them in...

  • Page 19: Recirculation / Pressure Relief Lines

    Connect Heated Hose See manual 309572 for detailed instructions for Graco heated hoses. The fluid temperature sensor (FTS) and whip hose must be used with heated hose; see page 19. Hose length, including whip hose, must be 60 ft (18.3 m) minimum.

  • Page 20: Close Gun Fluid Manifold Valves A And B

    Setup Close Gun Fluid Manifold Valves A and B ti2411a Connect Whip Hose to Gun Fluid Manifold Do not connect manifold to gun. ti2417a Pressure Check Hose See hose manual. Pressure check for leaks. If no leaks, wrap hose and electrical connections to protect from damage.

  • Page 21: Initial Startup

    Initial Startup Initial Startup 3. Turn both PRESSURE RELIEF/SPRAY valves (SA, SB) to SPRAY. Do not operate Reactor without all covers and shrouds in place. Fluid Temperature Sensor (FTS) Calibration Calibrate the FTS ONLY at initial startup (the first ti8442a time the unit is operated) and any time the hose length changes.

  • Page 22: Digital Temperature Controllers

    Initial Startup Digital Temperature Controllers To change or enter the set point, proceed as follows: NOTICE 1. Ensure red main disconnect switch is ON. Do not turn power on to the hose heat until after all Temperature Controllers will illuminate. hose power connectors are connected.
  • Page 23 Initial Startup Change Between Fahrenheit and Celsius The temperature controller is factory-set to display in Fahrenheit units. To change to Celsius units: 1. Press and release Scroll button (A1) until Controller displays “UNIT”. 2. Press and release Down button (A3) once to display “F”.

  • Page 24: Over Temperature Alarms

    Initial Startup Over Temperature Alarms Hose Heat Manual Mode Both the fluid heater and the hose heat have over If the hose temperature controller does not see the Fluid temperature alarms that will turn off the heat zone if high Temperature Sensor (FTS), it will shut off the hose heat temperatures are detected.

  • Page 25: Supply Wet-Cups With Throat Seal Liquid

    Initial Startup Supply Wet-Cups with Throat 2. Component B (Resin) Pump: Check felt washers in packing nut/wet-cup (AK) daily. Keep saturated Seal Liquid with TSL to prevent material from hardening on displacement rod. Replace felt washers when worn or contaminated with hardened material. Pump rod and connecting rod move during operation.

  • Page 26: Spraying Setup

    Spraying Setup Spraying Setup 1. After reaching spray temperatures, engage gun 5. Open air inlet ball valve (DD). piston safety lock. ti8449a ti2409a 6. Turn both air regulators (AU, AS, page 12) 2. Close gun fluid manifold valves A and B. counterclockwise to 0 pressure.

  • Page 27: Spray Adjustments

    Spraying Setup 11. Disengage gun piston safety lock. Spray Adjustments Flow rate, atomization, and amount of overspray are affected by four variables. • Fluid pressure setting. Too little pressure results in an uneven pattern, coarse droplet size, low flow, and poor mixing. Too much pressure results in ti2410a excessive overspray, high flow rates, difficult control, and excessive wear.

  • Page 28: Shutdown

    Shutdown Shutdown 1. Shut off Primary and Hose heat switches. 7. Check and fill wet-cups (AK, Z). 8. Follow gun shutdown procedure. 2. Park component A pump. Turn PARK/RUN switch to PARK. 3. Follow Pressure Relief procedure; see page 13. 4.

  • Page 29: Operation

    Operation Operation Daily Start-up Procedure 11. Turn on primary heater switch past ON to START. Ensure heater setpoint is correct. Wait for operating temperature to be reached. The daily start-up procedures describe normal To prevent excessive pressure build-up in heated operation.
  • Page 30 Operation 16. Open gun fluid manifold valves A and B. ti2414A 17. Disengage gun piston safety lock. ti2410A 18. Test spray onto cardboard. 19. Observe isocyanate-A and resin-B gauges on up and down strokes. Readjust upstroke pressure regulator as required to ensure proportioning pump pressure is equal on both the up and down strokes.

  • Page 31: Fluid Circulation

    Fluid Circulation Fluid Circulation Circulation Through Reactor Do not turn on hose heat unless hoses are already loaded with fluid. 7. Set both Air Regulator pressures to start at 15 psi (1.0 bar). Read Warnings; see page 4. Do not circulate fluid containing a blowing agent without consulting with 8.

  • Page 32: Circulation Through Gun Manifold

    Fluid Circulation Circulation Through Gun 2. Connect high pressure circulation lines (N) to circulation manifold (CK). Route circulation lines Manifold back to respective component A or B supply drum. Use hoses rated at the maximum working pressure of this equipment. 3.

  • Page 33: Maintenance

    Fluid Circulation Maintenance • Check and add TSL to B side pump wet-cup daily. • Check ISO lube bottle for significant discoloration or crystallization daily. Replace with fresh TSL when needed. • Ensure ISO (A) pump is down and in PARK position during every shutdown.

  • Page 34: Technical Data

    Technical Data Technical Data Category Data Maximum Fluid Working Pressure 2000 psi (1.4 MPa, 140 bar) Maximum Air Working Pressure 120 psi (0.84 MPa, 8.4 bar) Machine Maximum Power with hose 9000 Watts Voltage Requirement (50/60 Hz) 230 V, 1 Phase (230 V Nominal: 195-253 VAC) 230 V, 3 Phase (Delta) (380 V Nominal: 338-457 VAC)
  • Page 35 Technical Data 311511G...

  • Page 36: Graco Standard Warranty

    With the exception of any special, extended, or limited warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by Graco to be defective.

This manual is also suitable for:

253831

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