EBARA JEU - Manual (Page 11)

Ebara Fluid Handling
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(803) 327-5005 • (803) 327-5097 fax rev. 01/12
Ebara Self Priming Jet Pumps JEU
Troubleshooting
Type of Fault
The pump does not work (the motor does not turn over).
Cause Remedy
No electric power Check the contactor on the electric line
Plug not inserted Check power connection to the line
automatic switch has tripped reset the switch and check the cause
Thermal protection has tripped This resets automatically
(single phase) (single phase only)
Protection fuses are burnt out replace the fuses with others of the
(three phase) (three phase)
Incorrect electric connection Check terminal board and electric panel
Faulty motor or capacitor Contact the nearest distributor
Damaged bearing (noisy) Contact the nearest distributor
Type of Fault
The pump does not work (the motor does not turn over).
Cause Remedy
Voltage drop on the power line
Clogged filter at end of suction
Dismantle and clean the filter
Foot valve blocked Clean the valve and check its operation
No water in the pump Fill the pump (page 9)
Pressure too low Choke the delivery gate valve
Type of Fault
The pump works at a low flow rate.
Cause Remedy
Foot valve partly clogged Clean the valve and check its operation
Water level too low Switch off the pump or immerse the foot valve
Wrong direction of rotation Check the direction of rotation
(three phase only, page 9)
Wrong supply voltage Supply the pump with the correct voltage
as indicated on the data plate.
Leaking pipes Check the connections
Pressure too high Check the system
Type of Fault
The pump stops after brief periods of operation (tripping of the thermal protection).
Cause Remedy
Liquid temperature too high The temperature exceeds the technical
limits of the pump
Internal defect Contact the nearest distributor