Sprinkler Pump Fault Warning Guide

Sprinkler Pump Fault Warning Guide

By paying close attention to the operating sound and changes in water pressure of the water pump daily, potential problems can be detected in time, preventing minor faults from escalating into major damage.

I. Judging by Sound

A normal water pump should produce a steady, even humming sound or the sound of water flowing. Be alert to the following abnormal noises:

Sharp whistling or high-frequency noise: This may indicate air entering the pump ("cavitation"), severe bearing wear, or seal failure.

Dumbar impact or friction sound: The impeller may be loose or detached, or foreign objects (such as stones or debris) may be stuck inside the pump.

Irregular vibration and booming: This usually indicates an imbalance in the motor or pump shaft; the base fixing bolts may be loose.

Intermittent suction sound: Insufficient water intake or air leakage in the inlet pipe, causing the pump to be unable to draw water stably.

Core Principle: Any new, sudden, or harsh sound should be taken seriously; it is recommended to stop the machine immediately and check.

II. Pressure Assessment

Observe the pressure gauge reading or directly feel the change in the water flow force:

Sudden Pressure Drop or No Pressure:

The most likely cause is inlet blockage (filter or foot valve blocked).

It could also be due to severe impeller wear or detachment, or a serious leak or rupture in the pipeline.

Unstable Pressure or Violent Fluctuations:

This is usually caused by air leakage in the inlet pipe, leading to intermittent air intake by the pump.

It could also be due to a low water level, causing the pump to intermittently run dry.

Abnormal Pressure Increase:

Check if the outlet valve is accidentally closed or if the pipeline is blocked, causing the pump to "hold pressure".

Prolonged operation under overpressure will severely damage the seals and motor.

Core Principle: Abnormal pressure is a direct signal of changes in system resistance or the pump's own performance.

III. Action Steps

If any abnormal sound or pressure is detected, immediately:

Safe Shutdown: Disconnect the power supply.

Initial Troubleshooting: Check the most problematic components—the inlet filter, pipe joints for air or water leaks, and the valve status.

Seek professional assistance: If initial troubleshooting fails to resolve the issue, do not attempt to power on the pump or disassemble core components yourself. Contact a professional for repair.

Developing good habits of pre-start checks and in-operation observation is the most economical and effective way to extend the life of the sprinkler pump and ensure smooth operation during the irrigation season.