Submersible Slurry Pump Troubleshooting Guide

Jan. 18, 2020

Faults	Problem	Solution
No liquid lifting or deficient	1.Reverse rotation of motor	1. Change any two leads of the three phases
	2.Pipe or impeller blocked	2. Clear suction area
	3. Impeller drop down or damaged	3.Re-secure or change impeller
Uneven running (Vibration)	1. Pump head too low or pump cavitation	1. Replace pump or reset valve
	2. Impeller damaged	2. Replace impeller
	3. Bearing damaged	3. Replace bearing
	4. Impeller friction	4. Reset impeller gap
Insulation failure	1. Cable damaged	1. Replace cable and dry motor
	2. Mechanical seal failure	2. Replace seal and dry motor
	3. O ring failure	3. Replace O ring and dry motor
	4. Water into cable	4. Replace cable and dry motor
Current excessive or motorTemperature too high	1. The pump is locked	1. Free impeller
	2.Medium density and viscosity is excessive	2. Adjust medium density and viscosity.
	3. Bearing damaged	3. Replace bearing
	4. Working voltage is too low	4. Reset voltage
Sudden current drop	1. Pipe or pump blocked	1. Cleaning pump or pipe
	2. Water level is too low	2. Filling medium
	3. Impeller damaged	3. Replace impeller
Thermal protection alarm	1. Motor out of water	1. Reset pump installation or install cooling device
	2. Voltage low	2. Reset voltage
	3. Bearing damaged	3. Replace bearing
	4.Trouble with cooling device	4. Clean cooling device
Leak protection alarm	1. Mechanical seal failure	1. Replace seal and dry motor
Leak protection alarm	2. O ring failure	2. Replace O ring and dry motor

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