Pump Lift: Installation and Use continued...
Section 3: Un-installing a Pump System
This manual assumes that you are starting with a Simple Pump that is completely installed. We start with a step-by-step explanation of removal rather than installation because the weight of the pump system is usually heavier when removing than when installing.
If the pump has been used recently, the column of water retained in the length of drop pipes will add 30 pounds to the total weight of the pump set for every 100 feet of drop pipe above the static water level. This figure will go down slowly over time (probably months), as the water gradually returns to the static water level.