Almost all irrigation pumps use an impeller to provide the centrifugal force to distribute water. Pumps with impeller action include centrifugal pumps, which may be adequate for low-lift horizontal applications, and turbine pumps which are more efficient and the standard for deep-well use.
Over time, pump performance will inevitably decline. This rate of decline in pump effectiveness depends on several variables. If a pump is more than five years old, it is a good candidate for testing to determine if performance can improved or if a replacement pump may be more cost effective.
An Irrigation Pump Test measures various aspects of the pump's operating performance including lift, discharge pressure, power input, and water flow. The results of the pump test provide a value for the overall efficiency of the pumping plant. There are three main classes of pump testing:
- Simple System Evaluation: A walk-through evaluation to measure pump discharge pressure, utility meter data, and evaluate the condition of distribution system and sprinkler nozzles.
- Simple System Irrigation Pump Test (e.g. open discharge to a pond): Perform to check flow, TDH, and input power, and limited mainline analysis.
- Irrigation Pump Test and System Analysis: Perform irrigation pump test, evaluate mainlines and critical sprinklers in the tested condition, and make adjustments for the critical position of the system.
After the test has been completed, the pump owner or producer will receive a report with test results and recommendations. Some utilities offer reimbursements for pump testing conducted by a utility or qualified vendor.
Please note: BPA does not provide incentives directly to agricultural producers. Please contact your local utility for details.