Which statement about maintenance is true?

• A. Spray heads require less maintenance than rotors
• B. Rotors always clog more easily than spray heads
• C. Spray heads typically require more maintenance due to clogging
• D. Both require the same maintenance

Answer: (C)

Maintenance in irrigation systems is largely driven by how components handle water quality and debris. Spray heads have very small orifices, so mineral buildup, sediment, or algae can quickly clog a nozzle. When a nozzle is blocked or partially blocked, the spray pattern becomes irregular, the throw shortens, or the head stops delivering water in the intended direction. Because these nozzles clog more readily, spray heads typically require more ongoing maintenance to clean or replace clogged nozzles, flush lines, and monitor filtration and water quality.

Rotors, on the other hand, use larger passages and a moving mechanism, so they’re less sensitive to small particulates and clogs. Their maintenance tends to focus more on the mechanical aspects—keeping gears, bearings, seals, and the drive mechanism in good condition and ensuring the arc and radius stay accurate. That’s why, in general, spray heads demand more frequent maintenance specifically for clogging issues, while rotors require maintenance tied to wear and mechanical function rather than frequent nozzle cleaning.

So the true statement is that spray heads typically require more maintenance due to clogging. The other ideas aren’t as accurate because rotors don’t inherently clog more, and spray heads don’t require less maintenance or that both types have identical maintenance needs.