Loading... Please wait...BL40D solar well pump with ALC 1275 level controller - $775.00 - Brushless motor which operates on DC voltages of 12.6 to 40 VDC. The ALC1275 controller controls the on/off cycles of your solar pump. Just place the supplied wire into the tank or trough to be monitored and the controller will turn the solar pump on when the water level drops. Great for cattle troughs! Robinson pumps are Positive displacement which can be run dry without damage. The BL40D pump uses dual pistons. Pump produces up to 1000 gallons per day @ 2.5 gpm max. See BL40 Pump Specs. Requires solar panel(s) to operate which can be purchased separtately or use your own. Requires a well casing of 5" or larger. ALC1275 level controller and sand sock included . 2 year warranty.