Solar Force Piston Pump Solar Force Piston Pump draws water from a shallow well, spring, pond, river or tank. It can push water uphill and over long distances for home, village, irrigation or livestock uses. It can use power directly from a photovoltaic array, or from storage batteries, to fill a storage tank or to pressurize water. Ultra-Efficient: * Uses less power than any other pump in its range Economical: * Reduces power system cost by 25-75% compared to centrifugal or AC pumps Solar-Direct Application: * Starts pumping in low light conditions Pressurizing Application: * DC version is most efficient. AC version uses a low-surge permanent magnet motor that greatly reduces starting surge, inverter size, and wire size requirements (when compared to conventional AC pumps). Rugged and Reliable: * Proven design with a 20–year life expectancy. Simple to maintain with common tools (5-10 yr. maintenance interval) Good Tolerance for dirt and dry run Mechanical Drive: * allows engine or hand-lever backup. Illustrated Instruction Manual: * makes it easy for anyone to install and service, with no previous experience. Construction * Cast iron body * Brass cylinder and valve seats * Leather cup piston seals * Neoprene valve seals * Oil-bath crankcase * Gear (timing) belt drive on PV models * Standard V-belt on B models * Pressure relief valve * Permanent Magnet DC Motor * Surge tank included (not in photo) Suction Capacity * 25 vertical feet (7.6 m) at sea level. Subtract 1 foot for every 1000 ft. elevation (1 m for every 1,000 m). Suction capacity may be further limited by intake pipe friction. Intake piping should be minimum 1” (3010, 3020 models) or minimum 1 1/4” (3040). For best reliability, place the pump as close to the water source as possible. System Requirements * Solar-Direct Systems: Chart indicates power (w) required at the pump. The rated power of the PV array must exceed this number by 20 % or more. A pump controller (linear current booster) is required for the pump to start and run in varying light conditions. A solar tracker may be used to increase daily yield (40-55 % in summer). * Pressurizing Systems: battery power system, pressure switch, and pressure tank of minimum 60 gallon (230 l) size (captive-air tank, available locally) Voltages Available: * 12, 24, 48 VDC Note: PV-Direct full working voltage is typically 20% higher than nominal (example: 29 Volts for a 24V system) * 115V or 230V AC, 50-60Hz Fittings * Intake: 1 1/4” female pipe thread * Outlet: 1” female pipe thread Dimensions * 22 x 13 x 16” high (56 x 33 x 41 cm) * With Surge Tank (not shown in photo), * total height 26” (60 cm) * Weight, max. 80 lbs (36 kg) * Shipped in 2 or 3 boxes Warranty * 2 years against defects in materials and workmanship