If you observe nozzle clogging, which component is most likely malfunctioning?

• A. The agitator is not working properly
• B. The filter is blocked
• C. The pump is over-pressurized
• D. The nozzle caps are loose

Answer: (A)

Nozzle clogging usually signals a problem with keeping the spray mix in suspension. The agitator is the device that keeps solids from settling out so the liquid remains uniform as you spray. If the agitator isn’t working, heavier particles can fall to the bottom of the tank and accumulate near the outlet. When you start spraying, those settled solids can be drawn into the nozzle and clog it, reducing flow or stopping spray.

Other issues tend to show different symptoms. A blocked filter would mainly restrict flow and cause pressure problems rather than continuous clogging at the nozzle. If the pump is over-pressurized, you’d typically see leaks, spraying at abnormal pressures, or erratic patterns rather than persistent nozzle blockage. Loose nozzle caps cause leaks or spray leaks and a change in pattern, not consistent clogging.

So, when you notice nozzle clogging, the agitator not functioning properly is the most likely culprit because it directly affects keeping the mixture’s solids in suspension and prevents them from accumulating at the nozzle.