Technical Support

Everything on this page is Graco's own material. Graco builds the equipment, writes the service procedures and sets the specifications, so where there is a question about how a machine should be started, cleaned, serviced or set up, the answer that matters is theirs. We index it here by task rather than restating it, because a paraphrase of a service procedure is a chance to introduce an error into someone's rebuild.

Every video below is from Graco's own channel and every manual links to Graco's published PDF. If a procedure here ever disagrees with what Graco publishes, follow Graco.

Use the sections below to find what you need:

Basic startup and shutdown — rig-by-rig walkthroughs for the A25, E20, E30 and GH2.
Spray gun cleaning and assembly — gun startup, shutdown and front-end assembly.
Graco University — Graco's own overviews for the Reactor 3 and each Fusion gun, including Spanish-language material.
Proportioner info — operations and repair manuals for the Reactor range.
Spray gun info — operations and repair manuals for the Fusion guns.

If none of it answers your question, call 1-800-674-3626. We would rather talk it through than have you guess at a machine, and we can usually tell in a minute whether it is a setting, a worn part or something that needs a technician. If it is a part, the Graco gun parts finder will get you the right number.

Basic Startup and Shutdown Overviews

The video provides a walkthrough of the basic startup procedures for operating the Graco Reactor 3 E-30 Elite spray foam proportioner, focusing on the version equipped with E1 stick pumps.
It demonstrates essential steps to safely start up and prepare the machine:
Opening drum air holes so the material can flow smoothly.
Ensuring breakers are off before powering up the generator and turning on the system.
Engaging the auto and start sequence on the control panel.
Setting the compressor to auto so it will activate when needed.
Powering up the machine via the main switch and confirming chemical supply, then dialing appropriate pressures (e.g., 80 psi).
Activating hose heat and waiting for target temperatures (around 125°F/52°C) before turning on A/B-side heaters.
Setting target spray pressures (e.g., 1500 psi).
Once temperatures and pressures are reached, activating pumps and spray function to begin spray foam application.

The operator shares practical tips on monitoring system temperatures, adjusting for climate and material type, and overall preparation for effective spraying.

Key features shown:

The system’s touchscreen controls.
Independent control of temperatures for optimal yield and pressure balancing.
Built-in safety and sequencing steps.
Emphasis on consistent warm-up and pressure stabilization before operation.

This video is ideal for new users and technicians, serving as a visual guide to ensure correct startup and safe, effective use of the Graco Reactor 3 E-30 Elite with stick pumps.

Spray Gun Cleaning and Assembly

Graco University

Graco provides a wealth of manuals and videos to support contractors that use their equipment. We have selected a few of the most helpful to show you here.

Check out the Graco Spray Foam Equipment YouTube channel for even more content.