Troubleshooting Guide - Xylem GOULDS XBGR Series Installation, Operation And Maintenance Manual

TROUBLESHOOTING GUIDE

PROBLEM
The pump does not
deliver any flow
The pump has
insufficient flow
Loss of Head
The motor is over-
heating
There is noise in the
pump
There is a big
vibration In the motor
There is no suction.
The motor runs but it
gives no pressure
The motor does not
start
POSSIBLE CAUSE
The suction or discharge pipes may be
blocked.
The suction pipes are leaking air.
The Impeller is damaged and / or corroded.
The mechanical seal is damaged and or
corroded.
The motor speed is lower than required.
Wrong Rotation.
The impeller is damaged and/or corroded.
The flow is beyond the end of the pump
curve.
Mechanical wear is present. The motor
fan is damaged. The motor is not properly
ventilated.
The flow is outside acceptable operating
range.
A nut may be loose.
The vibration is caused by unbalanced/
insecure Installation.
The pump was not primed properly.
The fuse has blown.
The thermal protector may have activated.
SOLUTION
Check the pipes.
Seal the pipes.
The impeller must be replaced.
The mechanical seal must be replaced.
Check for voltage fluctuation.
Change motor wiring.
The impeller must be replaced.
Make sure the correct pump was selected
or adjust the outlet valve to reduce the
flow and bring the pump within acceptable
operating range.
Check and correct mechanical wear.
The motor fan must be replaced.
Provide good ventilation for the motor.
Make sure the correct pump was selected
or adjust the outlet valve to reduce the
flow and bring the pump within acceptable
operating range.
Check and fasten, all loose nuts.
Adjust the pump installation. Make sure to
level up the base and correctly fasten the
bracket bolts.
Fill the pump body with water. Prime the
pump according to instructions.
Visual Check for fault.
Ask Qualified electrician.
Replace the fuse.
Allow the motor to cool down to reset the
thermal protector.
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