The well jet pumps are installed very deep, so they need regular troubleshooting & maintenance to stay in normal working situation. Some of the common problems may be eliminated by changing the broken seals or impellers if any. The following points will help in doing so:
- Switch off the power source for the pump. Take out the prime plug which is inserted in the pump’s top hole. Position a water pipe at this hole and fill the jet pump case with water. Place the prime plug back in the hole.
- Keep the well pump running until the air ends bubbling up from the priming plug. There should be no remains of air in the casing of the pump.
- Switch off the pump and take out the nuts holding its motor side & wet side. Now, the wrench has to be locked onto the shaft so that it does not rotate. The impeller should be turned along with the threads in anti-clockwise direction until they come off the motor shaft. Now, move the mechanical seal along the shaft.
- Set up a new mechanical seal on the motor shaft and skate it at the back of the shaft. Replacement of the seal will help in preventing the water from leaking into the dry part of the jet pumps.
- Also replace the impeller if the old one has any cracks and damages. It will lessen the noise & vibrations caused by its motor.
- Now, place the wet and dry ends of the pump next to each other and the bolt holes should be lined up. Insert one bolt in each hole & then tighten it using the wrench to secure the jet pump.
The jet pumps can last for many years if they are properly maintained. It will reduce the expenses of changing the pump frequently.
