Well Pump Installer case studies
Well Pump Installer · Put your knowledge to work in context.
The Well Pump Installer credential - also written as Certified Pump Installer or NGWA Certified Pump Installer - is a professional certification aimed at the people who set up and service water well pumping systems: pump installers, well contractors, and field technicians who want a recognized marker of competence beyond a state license. Candidates are typically expected to combine hands-on field experience with working knowledge of codes, manufacturer literature, and basic hydraulic and electrical calculations. The Well Pump Installer case studies are 5 cases and about 2,541 words.
1Multiple Check Valves, Tank Sizing, and Water Hammer
A 4-inch, 20 gpm submersible pump is set at 220 ft in a 6-inch steel well. The system uses a 40/60 pressure switch, an 82-gallon bladder tank with 38 psi precharge, 1-1/4-inch Schedule 80 drop pipe, and a pitless adapter.
549 words, about 3 min2Sizing a Submersible for Peak Demand and Limited Well Yield
A 6-inch well has a static water level of 50 ft and yields 15 gpm. At 12 gpm the pumping level stabilizes at 130 ft.
506 words, about 3 min3Voltage Drop, Breaker Tripping, and Motor Current
A 1.5 hp, 230 V, single-phase, 3-wire submersible pump is set 480 ft deep in a well. The motor nameplate current is 9.8 A at 230 V.
462 words, about 2 min4New Three-Phase Pump Delivers Low Flow at Startup
A new 3 hp, 460 V, three-phase submersible pump is installed at 300 ft in a 6-inch well. The pump curve shows 25 gpm at 320 ft of head.
494 words, about 2 min5Flooded Well Pit, Short Cycling, and Air in the Lines
A homeowner has a shallow-well jet pump installed in a below-grade concrete pit. After heavy rain, the pit holds 8 inches of water.
530 words, about 3 min