IMPORTANT TIPS FOR INSTALLATION

1.Pump delivery pressure should be less than the selected hydrostatic allowable pressure of column pipes.

 

2. During column pipe installation, maximum hydrostatic delivery pressure is generated near the pump. The topmost pipe holds the entire load of the assembled pipes, the pump and the extracted water.

 

3. In deep bore-wells with high pressure pumps, two classes of column pipes of the same size may be used to save on costs. Heavy pipes may directly be connected to the pump. After some height and loss of delivery pressure, standard pipes can be used at the top. When using this combination do not use V4, medium or crystal range pipes.

 

4. Column pipes are more effective in bore-wells with full casing. Bore-wells which are free from loose stones, soil or silt also give better performance.

 

5. Wherever loose stones, soil or silt are present, a slightly larger bore or full casing is suggested to prevent the pump from getting clogged or stuck when operational.

 

6. Bore-well drilling should be straight down without bending.

 

7. During the dry run of the pump, the heat generated may damage the column pipe. In such a case the initial 3-meter steel pipe must be connected directly with the pump for proper heat dispersion before it reaches the column pipe.

 

8. The dry run condition may be tackled by installing a hand-operated valve, at the top of the bore-well, keeping it partially open. This limits the water flow, ensuring that the pump does not get dry.

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