Seven causes and corrective measures of sudden shutdown of fire pumps

What are the causes for the inexplicable shutdown of the fire pump? Why does the fire pump stop suddenly? What are the unknown reasons behind the shutdown of a fire pump?

Some customers who did not know more when they encountered a sudden shutdown of the fire pump. So today, I am here to tell you why the fire pump suddenly stopped. What are the causes and corrective measures?

Reason 1: The packing or seal in the packing box of the fire pump is worn out, causing air to get into the pump casing.
Measure: Inspect the packing or seal and replace as needed. Check if lubrication is normal.

Reason 2: the suction head is insufficient when pumping hot or volatile liquids.
Measure: Increase the suction head and consult the manufacturer.

Reason 3: The bottom valve or inlet pipe is not deep enough for immersion.
Measure: Consult the manufacturer for the correct immersion depth and use a baffle to eliminate eddy currents.

Reason 4: Fire pump suction is too high.
Measure: Check the existing net head. If the inlet line is too small or too long, it will cause great friction loss.

Reason 5: Impeller or pipeline blocked.
Measure: Check obstacles and clean up in time.

Reason 6: There is a leak in the air or inlet line.
Measure: Check the inlet line for cavitation or air leak.

Reason 7: The fire pump shell gasket is damaged.
Measure: Check the condition of the gasket and replace it as required.