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Graco Reactor A-20 User Manual

Graco Reactor A-20
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311511G
ENG
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.
See page 3 for a list of models and maximum working pressures.
US Patent No. 7822326
Russian Patent No. 2359181
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
TI8447A

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Graco Reactor A-20 Specifications

General IconGeneral
TypeAirless Paint Sprayer
Power SourceElectric
Hopper Capacity1.5 gallons
Max Pressure2000 PSI
Hose Length50 ft
Spray Tip Size0.015 - 0.019 inches

Summary

Important Safety Instructions

Systems

Warnings

Electric Shock Hazard

General safety warning about electrical hazards and proper grounding.

Toxic Fluid or Fumes Hazard

Warning regarding hazardous fluids, vapors, and necessary precautions.

Personal Protective Equipment

Specifies required PPE for safe operation, including eye, skin, and hearing protection.

Skin Injection Hazard

High-pressure fluid injection risk and the need for immediate medical attention.

Fire and Explosion Hazard

Risks associated with flammable fumes and necessary preventative measures in the work area.

Thermal Expansion Hazard

Danger of pressure buildup from thermal expansion in confined spaces and hoses.

Pressurized Aluminum Parts Hazard

Warning against using specific solvents with aluminum components due to chemical reactions.

Equipment Misuse Hazard

Consequences of improper use, including injury and damage, and adherence to guidelines.

Moving Parts Hazard

Risk of pinching or amputation from moving machine parts; emphasizes safety guards.

Burn Hazard

Warning about hot equipment surfaces and fluids, advising caution to avoid burns.

Typical Installation

Without Circulation

Diagram and description of typical system setup without fluid circulation.

With Circulation

Diagram and description of typical system setup with fluid circulation.

Isocyanates and Material Handling

Moisture Sensitivity of Isocyanates

Explains ISO reaction with moisture, crystal formation, and viscosity increase.

Isocyanate Hazard

Details risks from isocyanate mists, vapors, and particulates, requiring ventilation and PPE.

Keep Components A and B Separate

Emphasizes preventing cross-contamination of A (isocyanate) and B (resin) components.

Changing Materials

Procedures for flushing and cleaning when switching between different materials.

Foam Self-Ignition

Warning about potential self-ignition if materials are applied too thickly.

Component Identification

Controls and Indicators

Procedures

Pressure Relief Procedure

Step-by-step instructions for safely relieving pressure in the system.

Flushing

Guidelines for flushing the equipment with solvents or new fluid.

Setup

Locate Reactor A-20

Instructions for positioning and securing the Reactor A-20 unit on a level surface.

Determine Power Source

Outlines the available power source options for wiring the Reactor A-20.

Electrical Requirements

Details essential electrical safety precautions and connection requirements.

Configure to Supply Power

Steps for connecting the main power cord and ensuring proper electrical hookup.

Reposition Power Jumpers

Instructions for changing jumper positions to match the selected power supply voltage.

Ground System

Critical information on establishing proper grounding for all system components.

Iso Pump Lubrication System Setup

Steps for preparing the isocyanate pump lubrication system with TSL.

Fluid Supply Connections

Guides connecting material supply lines to the proportioning unit inlets.

Connect FTS and Heated Dual Whip Hose

Details on connecting the Fluid Temperature Sensor and heated whip hose.

Recirculation / Pressure Relief Lines

Instructions for connecting recirculation and pressure relief lines to the manifold.

Connect Heated Hose

Guidance on connecting the heated hose, emphasizing FTS and minimum length.

Gun Manifold and Hose Connections

Final connections for gun fluid manifold valves and pressure check hose.

Initial Startup

Fluid Temperature Sensor (FTS) Calibration

Procedure for calibrating the FTS at initial startup and after hose length changes.

Load Fluid with Feed Pumps

Steps for loading fluid into the system using feed pumps, including flushing.

Digital Temperature Controllers

Explanation of how to operate and adjust the digital temperature controllers.

Change Between Fahrenheit and Celsius

Instructions for switching the temperature display unit between F and C.

Over Temperature Alarms

Describes how over-temperature alarms function and what actions to take.

Hose Heat Manual Mode

Information on operating hose heat in manual mode and monitoring temperature.

Fluid Heater Temperature Offset

Notes on the fluid heater's calibration and temperature display compared to the hose.

Supply Wet-Cups with Throat Seal Liquid

Instructions for filling wet-cups with TSL for both ISO and Resin pumps.

Spraying Setup

Spray Adjustments

Details four key variables affecting spray pattern, atomization, and overspray.

Shutdown

Operation

Daily Start-up Procedure

Outlines the routine steps for starting the equipment each day.

Fluid Circulation

Circulation Through Reactor

Instructions for circulating fluid through the main reactor unit.

Circulation Through Gun Manifold

Steps for circulating fluid through the gun manifold for preheating.

Maintenance

Technical Data

Graco Warranty and Information

Graco Standard Warranty

Details the manufacturer's warranty terms and conditions for the equipment.

Graco Information

Contact information and resources for additional Graco product support.

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