一, failure forms: pump internal abnormal sound, not out of the water pump.
二, the cause analysis:
A, the suction pipe resistance is too large;
B, on the suction height is too high;
C, cavitation occurred;
D, inlet air into the;
E, pumping the liquid temperature is too high.
三, elimination method:
A, clean up the suction pipe and valve;
B, reduce height on the suction;
C, adjust the water valve to make it within the prescribed scope of operation;
D, blocking leakage;
E, to reduce the liquid temperature.
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