Bomba centrífuga vertical de água submersível de alta capacidade com revestimento de borracha

Faults

Reason

Removal

Pump fails to discharge
any liquid.

Air leaking into suction or gland

Incorrect direction of pump rota- tion
and impeller worn.
Suction pipe blocked

Sealed leakage.

Check direction of rotation and replacing a new impeller.

Removal lockage.

Shaft Power consumption is excessive

Gland excessively tightened against packing rings.

Rotating component is rubbing on a stationary part.
Bearing worn.
Drive belt tension too tight
Flow rate too large
Pump speed and ratio too high.
Misalignment or unparallel of drive shaft and pump shaft.

Loosen gland bolts.

Removal the rubbed part.
Replace the bearing
Adjusting belt.
Modifying the pump duty and speed.
Adjusting drive and pump shaft.

Bearing is over hearing

Lubricants too much or less.
Containing impurities in the lubricant
Bearing worn.

Lubricating as requirements.
Replace clean lubricant.
Replace new bearing.

Bearing has short life.

Misalignment or unparallel of drive
and pump shaft.
Shaft bent.
Impeller unbalanced due to wear.

Foreign object entered into the bearing or insufficient lubrication.
Incorrect procedure followed in
fitting bearings.

Adjusting drive and pump shaft.
Replacing shaft.
Remove rubbing and replacing new impeller
Clean the bearing.
Replacing or refitting the bearings.

Excessive leakage from stuffing box

Packing rings excessive worn.

Shaft sleeve worn.

Dirty sealing water.

Replace new packing rings.

Replace shaft sleeve.

Change clean sealing water.

Pump vibrates or is
noisy.

Bearings worn.
Impeller unbalanced.
Air entered into suction pipe or
blocked.
Flow rate is none-uniform and
pump not primed.

Replaced by new bearings.
Replaced by new impeller.
Discharge air and remove block.
Improve on the pump feeding.