Graco Reactor A-20 Repair Parts
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Graco Reactor A-20 Repair Parts

Graco Reactor A-20 Repair Parts

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Repair - Parts
Reactor A-20
For spraying or dispensing 1:1 mix ratio materials, including epoxies, and
polyurethane foam. Not for use in explosive atmospheres.
253831 Air operated, electrically heated, plural component
proportioner.
This model is field-configurable to the following supply voltages:
230 V, 1 Phase
230 V, 3 Phase
380 V, 3 Phase
2,000 psi (14 MPa, 140 bar) Maximum Fluid Working Pressure
120 psi (0.84 MPa, 8.4 bar) Maximum Air Working Pressure
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441
Copyright 2006, Graco Inc. is registered to I.S. EN ISO 9001
311512A
ti8447a

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Summary of Contents for Graco Reactor A-20

  • Page 1 120 psi (0.84 MPa, 8.4 bar) Maximum Air Working Pressure Important Safety Instructions Read all warnings and instructions in this manual. Save these instructions. ti8447a Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441 Copyright 2006, Graco Inc. is registered to I.S. EN ISO 9001...

  • Page 2: Table Of Contents

    Before Beginning Repair ....7 Reactor A-20 ......26 Pressure Relief Procedure .

  • Page 3: Supplied Manuals

    Reactor A-20 Proportioner A-20 Proportioner. Refer to these manuals for detailed Part No. Description equipment information. 311511 Reactor A-20 Proportioner, Operation Man- Order Part No. 15B535 for a compact disk of Reactor ual (English) manuals translated in several languages. Proportioning Pump Part No.

  • Page 4: Warnings

    Warnings Warnings The following general warnings are for the setup, use, grounding, maintenance, and repair of this equipment. Addi- tional, more specific warnings may be found throughout the body of this manual where applicable. Symbols appear- ing 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: Isocyanate Hazard

    Keep the felt washers in the pump wet-cups satu- • Most materials use ISO on the A side, but some use rated with Graco ISO pump oil, Part No. 217374. ISO on the B side. The lubricant creates a barrier between the ISO and the atmosphere.

  • Page 7: Before Beginning Repair

    Before Beginning Repair Before Beginning Repair Flushing Repairing this equipment requires access to parts Flush equipment only in a well-ventilated area. Do not that may cause electric shock or other serious injury if spray flammable fluids. Do not turn on heaters while work is not performed properly.

  • Page 8: Troubleshooting

    Troubleshooting Troubleshooting Power PROBLEM CAUSE SOLUTION Reactor does not operate No power Plug in power cord Turn Main Disconnect Switch ON Power cord not connected properly Check connections No power when disconnect switch is Power terminal jumper still at 380V, 3 Place jumpers in correct position;...
  • Page 9 Troubleshooting PROBLEM CAUSE SOLUTION One pressure gauge drops when Piston check ball not sealing Repair pump; see 309577 pumps are stalled on the upstroke, Piston packing not sealing Repair pump; see 309577 but not the downstroke Loose piston stud in pump Repair pump;...
  • Page 10 Troubleshooting PROBLEM CAUSE SOLUTION Air motor doesn’t move with air pres- Reversing switch failed Inspect and repair parts; see page sure applied Solenoid valve failed Replace valve. Pump movement speed is erratic Worn air motor seals Replace seals; see page see page Worn pump seals Replace seals;...
  • Page 11 Check sensor for 18 ohms. in hose. Hose power controller is set too high Contact Graco Technical Assistance. Low heat in hose. Hose power con- More than 210 ft (64 m) of heated Running at full voltage. Orange light...

  • Page 12: Repair

    Repair Repair Air Motor Cover Unless otherwise noted, all repair procedures must be completed with incoming power switched OFF and locked out at the source. Any electrical repair or trou- bleshooting required beyond the scope of this manual must be performed by a qualified electrician. Shut off air inlet ball valve and shut off all air supply pressure.
  • Page 13 Repair 5. Shut off both feed pumps and close both inlet supply valves (F). ti8448a 6. Shut off inlet air ball valve (G). 7. Remove air motor cover on side to be repaired; see page 12. ti8481a 8. Disconnect fittings at inlet (Q) and outlet (M). Also disconnect steel outlet tube (P) from heater inlet.

  • Page 14: Pump Installation

    Repair Pump Installation 5. For Iso A pump only: reconnect two tubing lines (N) from ISO Pump Lube reservoir. Flush and refill res- ervoir with TSL 206995. 1. Ensure locknut (431) is screwed on pump with flat side up. Grease pump mounting threads in plate (412) with lithium grease.

  • Page 15: Recirculation / Over Pressure Relief Block

    Repair Recirculation / Over Pressure Relief Block Valves can be serviced with the block on the machine (see page 32 for parts view). For thorough cleaning, remove the block assembly as follows. 1. Remove both rear shrouds and lower front shroud; see page 12.

  • Page 16: Reversing Switch

    Repair Reversing Switch Air Inlet Filter / Water Separator (Auto Drain) 1. Remove single screw and remove cover from reversing switch (410). Air Filter Element Removal 2. Inspect parts for damage or wear; replace switch assembly if necessary. See Air Inlet, page 30. 3.

  • Page 17: Primary Heater

    Repair Primary Heater 3. Follow brown thermocouple wire up to hose heat temperature control and disconnect. See Wiring on page 35. 4. Disconnect over pressure switches. a. Loosen retaining screw. Read Warnings on page 4. Wait for heater to cool be- fore repairing.

  • Page 18: Heating Elements

    Repair Heating Elements 5. Check each fuse in fuse holder. Swing open fuse holder by pulling on tab. Test each fuse for electrical continuity from end to end. Replace if open resis- The primary heater contains four 1500-watt (30-36 tance is measured. If fuses are good, see step 6. ohms each) heating elements wired in parallel.

  • Page 19: Fluid Inlet Filter Screen

    The time inter- check valves in pump base. Inspect and clean both val between changes due to gel formation will depend screens. See Reactor A-20 Operation manual (311511). on environmental conditions. To change lubricant, use the following steps.

  • Page 20: Fluid Temperature Sensor (Fts)

    Repair Fluid Temperature Sensor (FTS) FTS Test 1. Turn Main Disconnect Switch OFF. Disconnect Check FTS operation by connecting directly to Reactor. power supply cord. An alternating hose controller display of SbEr and 2. Relieve pressure; see page 7. H0.00 indicates a loss of signal from the FTS. Two conditions must be satisfied for proper FTS 3.
  • Page 21 Repair Removal 1. Carefully extend FTS probe (UU). Do not bend or kink probe. Insert in component A (ISO) side of 1. Disconnect air hoses (C, L) and electrical connec- main hose. tors. 2. Connect whip hose ground wire (MM) to ground 2.

  • Page 22: Replacing Control Components

    Replacing Control Components Replacing Control Components Hose Power Controller / Circuit 2. Rotate metal tab counterclockwise. Breaker / Relays 3. Pull contact block straight back and off. Hose Heat Power Controller and Hose Transformer Sec- 4. Unscrew round nut on back of knob to remove. ondary Circuit Breaker are DIN rail-mounted in the lower cabinet.

  • Page 23: Air Motor Up / Down / Pressure Regulators / Gauges

    Replacing Control Components Hose Heat Manual Mode Air Motor Up / Down / Pressure Regulators / Gauges If the hose temperature controller does not see the Fluid Temperature Sensor (FTS), it will shut off the hose heat and give a flashing error alternating between: Regulators SbEr = Sensor break error Unscrew block nut on front of panel.

  • Page 24: Accessories

    Accessories Accessories Feed Pump Kits Heated Hoses Pumps, hoses, and mounting hardware to supply fluids 50 ft (15.2 m) and 25 ft (7.6 m) lengths, 1/4 in. (6 mm), to Reactor. Includes 246483 Air Supply Kit. See 309815. 3/8 in. (10 mm), or 1/2 in. (13 mm) diameter, 2000 psi (14 MPa, 140 bar) or 3500 psi (24 MPa, 241 bar).

  • Page 25: Recommended Spare Parts

    Recommended Spare Parts Recommended Spare Parts Keep the following spare parts on hand to reduce downtime. Part No. Description 245971 Pump, Resin (B) side 246421 Resin (B) Pump Repair Kit for 245971 pump 246831 Pump, ISO (A) side 15C851 ISO (A) Pump Repair Kit for 246831 pump 246963 Wet Cup Kit for 246831 pump 206995...

  • Page 26: Parts

    Parts Parts Reactor A-20 30, 32 See page 30 ti8494b ti8494b Apply threadlock to screw threads. ti8730a . 2: Reactor A-20 311512A...
  • Page 27 Parts Reactor A-20 Ref. Part Description Qty. 41❄ 114151 FITTING, elbow, male, swivel 42❄ 100451 COUPLING Ref. Part Description Qty. 117623 NUT, cap (3/8-16) CART, assy. 114269 GROMMET, rubber PANEL, control, electrical; see 46❄ 113505 NUT, keps, hex hd, 10/24 page 28 47†▲...

  • Page 28: Electrical Control Panel

    Parts Electrical Control Panel ti8452a See pg 29 See pg 29 ti8483a 141, 129 . 3: Electrical Control Panel 311512A...
  • Page 29 Parts Electrical Control Panel Ref. Part Description Qty. 124 120495 BLOCK, switch, N.C., green Ref. Part Description Qty. 125 120498 RELAY, contactor, hose 104 15B291 PLATE, display 126 295351 CIRCUIT BREAKER, 16A, 2P 105 117523 NUT, cap (#10) 127 295355 CIRCUIT BREAKER, 32A, 2P 106 15J591 CONTROLLER, temp, heater 128 120489 RELAY, pump circuit 129 514556 HOLDER, fuse term.

  • Page 30: Relief Manifold

    Parts Relief Manifold Air Inlet 208b 208a TI8731a ti8459a . 5: Air Inlet Apply sealant and torque to 250 in-lbs (28 N•m) Ref. Part Description Qty. Use blue thread lock on valve cartridge threads into manifold 301 117629 FILTER, air, 3/8 (auto drain) 302 113333 VALVE, ball, vented, 0.375 Part of item 208 303 156849 PIPE, nipple...
  • Page 31 Parts 311512A...

  • Page 32: A-20 Air Motor Pump Assembly

    Parts A-20 Air Motor Pump Assembly TI8479b TI8480b . 6: A-20 Air Motor Pump Assembly 311512A...
  • Page 33 Parts A-20 Air Motor Pump Assembly Ref. Part Description Qty. 297439 VALVE, quick exhaust 108636 MUFFLER Ref. Part Description Qty. 116746 FITTING, barbed, plated 15J138 PLATE, base, pump 111328 CONNECTOR, male 15J131 PLATE, side 120522 VALVE, control, air 15J587 PLATE, cylinder, air, bottom 120553 NUT, center lock, 5/8-18 C19837 SCREW, cap, socket hd, 3/8-16 x 1 120552 NUT, center lock, 1/2-20...

  • Page 34: Primary 6000W Heater

    Parts Primary 6000W Heater 518, 523 ti8460b . 7: Primary 6000W Heater Ref. Part Description Qty. Ref. Part Description Qty. 515 113336 ADAPTER, 1/4 nptm, 1/4 nptf 501 288352 HEATER, B, kit 517 15J583 BRACKET, mounting, fuse 502 288353 HEATER, A, kit 518 120621 FUSE, block 503 260938 ELEMENT, heating 1500 watt 519 120570 BLOCK, terminal...
  • Page 35 Parts 311512A...

  • Page 36: Air Tubing Connections

    Air Tubing Connections Air Tubing Connections 600, 610a 600a 605a 600b 601b 609, 609a 601, 601a 605b 604, 608a 604a 604b 606a 607a 606b 608b 609b 607b 603, 603a 603b ti8735a 610b ti8487a . 8: Air Tubing Connections 311512A...
  • Page 37 Air Tubing Connections Air Tubing Connections Connection Length Item Ref. in. (mm) From 19.0 (482.6) 606a 606b Connection Length 14.5 (368.3) 607a 607b Item Ref. in. (mm) From 18.5 (469.9) 608a 608b 4.5 (114.3) 600a 600b 29.0 (736.6) 609a 609b 4.5 (114.3) 601a 601b...

  • Page 38: Reactor A-20 Wiring Schematic

    Reactor A-20 Wiring Schematic Reactor A-20 Wiring Schematic 311512A...
  • Page 39 Reactor A-20 Wiring Schematic 311512A...
  • Page 40 Reactor A-20 Wiring Schematic 311512A...
  • Page 41 Reactor A-20 Wiring Schematic 311512A...
  • Page 42 Reactor A-20 Wiring Schematic 311512A...

  • Page 43: Wiring Diagrams

    Wiring Diagrams Wiring Diagrams Heater Circuit 311512A...

  • Page 44: Pump Circuit

    Wiring Diagrams Pump Circuit 311512A...

  • Page 45: Hose Circuit

    Wiring Diagrams Hose Circuit 311512A...
  • Page 46 Wiring Diagrams 311512A...

  • Page 47: 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 48: 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.

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