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Graco Reactor A-25 - User Manual

Graco Reactor A-25
64 pages
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Instructions
PLURAL COMPONENT PROPORTIONER
®
A-25/A-XP1
Air operated, electrically heated, plural component proportioner
A-25: For spraying or dispensing 1:1 ratio polyurethane foam formulations and other 1:1
fast setting materials.
A-XP1: For spraying or dispensing 1:1 ratio polyurea formulations and other 1:1 fast
setting materials.
Not for use in explosive atmosphere or hazardous locations.
See page 3 for model information, including maximum working pressure and approvals.
This model is field-configurable to the following supply voltages:
200-240 VAC, 1 Phase
200-240 VAC, 3 Phase
350-415 VAC, 3 Phase
A-25:
2000 psi (14 MPa, 138 bar) Maximum Fluid Working Pressure
80 psi (550 kPa, 5.5 bar) Maximum Air Working Pressure
A-XP1:
3500 psi (24 MPa, 241 bar) Maximum Fluid Working Pressure
100psi (689 kPa, 6.9 bar) Maximum Air Working Pressure
Important Safety Instructions
Read all warnings and instructions in this
manual before using the equipment.
Save these instructions.
3A1570V
EN
ti16811b

Table of Contents

Other manuals for Graco Reactor A-25

Questions and Answers

  • N
    nicole11Sep 16, 2025
    What to do if the fan is not working on my Graco Reactor A-25 Paint Sprayer?
    • S
      Stacey HayesSep 16, 2025
      If the fan isn't working, it could be due to a blown fuse, so replace it. Also, check for any loose wires. If neither of those is the issue, the fan itself may be defective and need replacement.
  • J
    John GarnerAug 25, 2025
    What causes a fluid leak in the pump packing nut area of my Graco Reactor A-25 Paint Sprayer?
    • J
      Jill FranklinAug 25, 2025
      A fluid leak in the pump packing nut area is likely caused by worn throat seals, so replace them.
  • D
    Daniel CooperAug 25, 2025
    What to do if Graco Reactor A-25 Paint Sprayer display does not illuminate?
    • R
      ramirezangelaAug 26, 2025
      If the display doesn't illuminate, check if the power cord is plugged in and the disconnect switch is ON. Also, ensure the input voltage is within specifications and check all wire and cable connections.
  • X
    xbarnettAug 26, 2025
    Why is fluid pressure low or dropping in my Graco Reactor A-25 Paint Sprayer?
    • K
      katherinestaffordAug 27, 2025
      Low or dropping fluid pressure can be caused by several factors. Ensure the air supply pressure is adequate when spraying. It might be necessary to increase air compressor size to meet flow requirements. Also, remove any airline quick disconnects and use a 3/8 in. (0.95 cm) ID or larger air supply hose (or 1/2 in. (12.7 mm) if longer than 25 ft (7.6 m)). Finally, check for icing in air motor exhausts or mufflers.
  • R
    Rebecca NicholsSep 18, 2025
    Why are the display buttons not working properly on my Graco Reactor A-25 Paint Sprayer, and I cannot exit an operation?
    • J
      jamesmejiaSep 18, 2025
      If the display buttons aren't working correctly and you can't exit an operation, it could be due to a broken membrane switch, so replace it. Another possibility is a disconnected or broken ribbon cable, so connect or replace the cable.
  • G
    Gregory DixonSep 23, 2025
    What does it mean if the hose display reads 0A on startup for my Graco Paint Sprayer?
    • C
      Cynthia BairdSep 23, 2025
      If the hose display reads 0A on startup, it indicates that the FTS is not installed and the zone is off. Install the FTS, or adjust the current to the desired setting.
  • C
    Chloe JohnsonSep 8, 2025
    How to troubleshoot no hose heat in my Graco Reactor A-25?
    • A
      anthony28Sep 8, 2025
      If there's no hose heat, start by checking the hose electrical connections for any looseness and repair if necessary. Make sure the circuit breakers (CB1 or CB2) haven't tripped and reset them if needed. Verify that the hose zone is turned on by pressing the zone key. Also, check if the A and B temperature setpoints are too low and increase them if necessary. A failed temperature control board could also be the problem. To check the temperature control board, open the cabinet and see if the board LED is blinking. If not, check the power wiring connections to ensure the board has power. If the board has power and the LED is not blinking, replace the board.
  • R
    Rebecca MorrisSep 9, 2025
    What causes low heat in A or B zones of my Graco Paint Sprayer?
    • J
      John GlennSep 9, 2025
      Low heat in zones A or B can stem from various causes. First, check if the A and B temperature setpoints are too low and increase them if needed. High flow can also be a factor, so consider using a smaller mix chamber or decreasing the pressure. Other potential issues include a defective heater, loose connectors or wire nuts, low voltage, an overheated temperature control board (check fan operation, ensure the door is closed, and verify cooling holes are clear), or fluid that is too cold (preheat the fluid).
  • R
    Robert MaddoxSep 3, 2025
    What to do if Graco Paint Sprayer heat zones do not operate?
    • J
      Jason RamirezSep 3, 2025
      If the heat zones aren't working, first, connect the power cord. Then, turn the Main Disconnect Switch ON. Finally, check the power cord connections to ensure they are properly connected.
  • S
    Scott JohnsonSep 1, 2025
    What to do if the circuit breaker trips on my Graco Reactor A-25 Paint Sprayer?
    • D
      David MoralesSep 1, 2025
      If the external main supply power circuit breaker trips and the Reactor disconnect switch fails when switched on for your Graco Paint Sprayer, it could be because the power terminal jumper was left in the 200-240V, 1 phase position while using 200-240V, 3 phase or 350-415V, 3 phase power. To fix this, place the jumpers in the correct position. Also, replace the main power disconnect switch.

Summary

Instructions

Proportioner Models

Systems

Related Manuals

Warnings

Electrical, Chemical, and Burn Hazards

Covers dangers of electric shock, toxic fluids, fumes, and burn hazards.

Personal Protective Equipment

Specifies essential PPE for safe operation and protection against hazards.

Important Isocyanate (ISO) Information

Isocyanate Conditions

Details hazards and precautions associated with spraying isocyanate materials.

DataTrak Diagnostic Codes

Temperature Control Diagnostic Codes

Fluid Temperature and Zone Current Errors

Describes diagnostic codes related to high fluid temperature and zone current.

Sensor and Communication Errors

Covers errors for disconnected sensors, control board, and communication loss.

Before Beginning Repair

Pressure Relief Procedure

Outlines the critical steps to safely relieve system pressure before maintenance.

Shutdown

Park Procedure

Details the procedure for parking the proportioner pumps at the end of the day.

Flushing

Troubleshooting

Power and Pump Issues

Addresses common problems related to power supply and pump operation.

Pressure and Fluid Delivery Problems

Details troubleshooting steps for low pressure, no fluid, or unbalanced fluid delivery.

Electronics and Heater Problems

Covers issues with display, temperature control, and heater system functionality.

Hose Heat System Issues

Diagnoses and resolves problems related to hose heating performance and temperature.

Repair

Pump Disassembly and Assembly

Guides through the process of disconnecting, connecting, and servicing the pump.

Air Motor Procedures

Details the removal and installation of the air motor and related components.

Air Inlet Filter; Water Separator

Explains the removal and installation of the air filter element.

SCR Circuit and Module Replacement

Covers testing the SCR circuit and procedures for replacing the temperature control assembly.

Primary Heater Service

Provides instructions for servicing and replacing the primary heater element.

Thermocouple Service

Details the procedure for replacing or servicing the thermocouple.

Overtemperature Switch and Heated Hose

Covers testing the overtemperature switch and troubleshooting the heated hose system.

Fluid Temperature Sensor (FTS)

Guides on testing and replacing the fluid temperature sensor and its cables.

Transformer and Circuit Breaker Service

Outlines procedures for checking transformers and replacing circuit breakers.

Pump Lubrication System

Explains maintenance and changing of the pump lubrication system.

Fluid Inlet Strainer and Temperature Display

Covers cleaning the fluid inlet strainer and servicing the temperature display module.

Replace DataTrak Battery or Fuse

Details the steps for replacing the DataTrak module's battery or fuse.

Temperature Control Module

Accessories

Pump and Hose Kits

Lists available kits for feed pumps, air supply, and heated hoses.

Spray Guns and Filters

Describes various spray guns, Y-strainer screens, and air filter elements.

Recommended Spare Parts

Parts

Control Panel

Temperature Control Components

Wheel Kit

Fluid Manifold and Inlet Kit

Dual Zone Heater

Air Motor Pump Assembly

Air Tubing Connections

Breaker Module

Wiring Schematics

Incoming Power Wiring

Shows how incoming power is wired to the unit for different voltage options.

Simplified Heater Controls

Simplified schematic of heater controls for A-25 and A-XP1 models.

Technical Specifications

Reactor A-25 Specifications

Lists detailed technical specifications for the Reactor A-25 proportioner.

Reactor A-XP1 Specifications

Lists detailed technical specifications for the Reactor A-XP1 proportioner.

Graco Standard Warranty

Graco Information

Graco Reactor A-25 Specifications

General IconGeneral
BrandGraco
ModelReactor A-25
CategoryPaint Sprayer
LanguageEnglish

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