Craftsman 390.2509 Owner's Manual

BASIC TOOLSAND MATERIALS NEEDEDPlastic Pipe InstallationToolsPipe Wrenches Knife or Saw to Cut Plastic PipeScrewdriver Tire Pressure GaugeMaterialsPlastic Pipe and Firings (as required to complete job).Teflon Tape (DO NOT use joint compound on plastic fittings).When using a foot valve, a priming tee and plug as shown in Figure 1,are recommended.Galvanized Steel Pipe InstallationToolsPipe Wrenches Pipe Cutting and Threading ToolsScrewdriver Tire Pressure GaugeMaterialsGalvanized Pipe and Fittings (as required to complete job).Pipe Joint Compound or Teflon TapeMAJOR COMPONENTS ANDWHAT THEY DOImpeller and JetImpeller turns with motor shaft, causing water to fly out from itsrim by centrifugal force. Impeller rotation creates a vacuum whichpulls in more water. Part of the water is diverted back to the jetwhere it passes through the nozzle and venturi. This creates morevacuum to draw in more water.In shallow webs (less than 20 feet deep), the vacuum created at thepump is enough to pull water to the pump. Therefore, for shallowweb use the jet is built into the pump.Pre-Charged TankThe tank serves two functions. It provides a reservoir of waterunder pressure and maintains a cushion of air pressure to preventpipe hammering and possible damage to plumbing components.When water is drawn off through the house fixtures, the pressurein the tank is lowered and the pump starts.Pressure SwitchThe pressure switch provides for automatic operation. Pump startswhen pressure drops to 30 pounds and stops when pressurereaches 50 pounds.Check Valve or Foot ValveThis pump is equipped with a built:m check valve. Install a checkvalve as close to well as possible on web point installations. Afoot valve must be installed in the well on dug or cased wells. SeeFigures 2A and 2B. For long horizontal pipe runs, install check valveas close to web as possible (all types of wells).INSTALLATIONPiping in the WellThe Shallow Well Water System can be installed on a dug well,cased well or with a driven point. In a dug or cased well, a footvalve and strainer should be installed for easy priming. It should beinstalled five to ten feet below the lowest level to which the waterwill drop while the pump is operating (pumping water level). Tokeep sediment from clogging the strainer, be sure it is five to tenfeet above the bottom of the well. Before installing the foot valve,make sure that it works freely.Figure I - Connections to water systemWhen installed on a driven point well, your Shallow Well WaterSystem should have a check valve installed as shown in Figure 2A.For a pump at sea level mounted directly over the well, be sure thetotal lift from the pumping water level to the pump does not ex-ceed 20 feet. This will be less if the pump is offset from the weB.The maximum lift of any pump decreases at the rate of about 1'less lift for every 1,000 feet of elevation above sea level. For ex-ample, at Denver, Colorado (Elev. 5,000') the pump loses five feetof lift. The maximum depth from which it would pump waterwould therefore be 15 feet.C_heck Valve_Steel Drive Pipe_Drive coupling_Well point_Ddven pointFigure 2A - Driven pointWell SealPlastic PilSeFoot Valveand StrainerFigure 2B - Dug or cased well3