Spray Foam Rig Maintenance

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Spray foam rig maintenance is about protecting your investment, preventing downtime, and keeping your spray quality consistent. This page is aimed at contractors who want a clear, practical framework they can follow and build into their daily operations.

Regular maintenance extends the life of your proportioner, generator, compressor, hoses, and guns, while reducing expensive emergency repairs. Well-maintained rigs also help you deliver consistent foam quality, which means fewer callbacks and better customer reviews. Treat your rig like a rolling production plant, not just a trailer with equipment inside.

Daily maintenance is about quick inspections that catch problems before they stop a job.

• Walk around the rig to look for leaks, loose fittings, frayed hoses, and obvious damage.
• Verify generator/compressor is running smoothly, with no unusual noises or warning lights.
• Check drum pumps, transfer lines, and spray hose for kinks, pinches, or soft spots.
• Inspect the gun, clean the face, check filters/strainers, and make sure you have a backup gun ready.
• Confirm set temperatures and pressures are stable and in range before you start spraying.

A five-minute daily routine can prevent hours of downtime in the field.

Weekly and monthly tasks go a little deeper and keep the core systems healthy.

• Clean or replace Y-strainers and fluid filters on the proportioner at regular intervals.
• Verify air regulators are working correctly and not over-pressurizing transfer pumps or guns.
• Inspect hose scuff jackets end-to-end for rubbing, cuts, or exposed hose, and repair or replace as needed.
• Check electrical connections and keep dust and overspray off sensitive components where possible.
• Make sure your parts bins are stocked with common wear items like O-rings, screens, seals, and gun parts.

Building a simple checklist helps your crew perform these tasks consistently.

At least once a year, perform a thorough, front-to-back inspection of the entire rig.

• Outside the rig: inspect tires for tread and air pressure, check trailer brakes and bearings, and confirm all lights are working.
• Power unit: change oil, oil filters, fuel filters, air filters, and belts on generator and compressor according to manufacturer recommendations.
• Proportioner: change pump lube (TSL on the A-side where applicable), clean or replace filters and strainers, and check hydraulic or drive components for wear.
• Hoses and guns: inspect for internal wear, replace tired components, and retire any gun parts that have been over-cleaned or damaged.

An annual “deep dive” is the best time to address anything your daily and weekly checks flagged as borderline.

Good maintenance is not just about tools; it is about systems.

• Keep the rig clean and organized so tools, parts, and safety gear are easy to find and put away.
• Maintain a written maintenance log with dates, tasks done, and any issues noted for each major component.
• Follow manufacturer maintenance intervals for each piece of equipment to keep warranties valid.
• Work with a supplier who stocks common parts, can ship factory-direct quickly, and offers technical support when you are troubleshooting issues.

When you combine disciplined maintenance with strong supplier support, your spray foam rig runs more reliably, your crews stay productive, and your business is better positioned for growth.