Craftsman 390.2509 Owner's Manual

INSTALLATIONPUMP/TANK INSTALLATIONPumpNOTICE: Use Teflon tape supplied with the pump or Plasto-Joint Stik _for making all pipe-thread connections to the pump itself. To avoidstress-cracking, do not use pipe joint compounds on the pump.1. Wrap male pipe threads being attached to pump with one ortwo layers of Teflon tape. Cover entire threaded portion ofpipe.2. Do not overtighten threaded fittings in the plastic pump. Besure you do not try to tighten joint past thread stop in pumpport!3. If leaks occur, remove fittings, clean off old tape, rewrap withtwo to three layers of tape and remake the connection, ff jointstill leaks, replace the fittings (fittings may be undersized).4. Be sure to support all piping connected to the System.Horizontal Piping from Well to PumpWhen the pump is offset more than 25 feet from the well, hori-zontal suction pipe size should be increased to reduce frictionlosses. Never install a suction pipe that is smaller than the suctiontapping of the pump.1-114" 1-1/2" 2"Up to 25 Ft. 25 to 50 Ft. 50 to 200 Ft.Discharge Pipe SizesWhen the pump is some distance from the house or point of wateruse, the discharge pipe size should be increased to reduce pressurelosses caused by friction.1 " 1-114" 1-1/2"Up to 25 Ft. 25 to 100 Ft. 100 to 600 Ft.'Lake Chemical Co., Chicago, IlIinoisTankTank is pre-charged with 40 pounds per square inch (PSI) air pres-sure at the factory. Your tank requires an air charge of 30 PSI forproper operation; check tank pressure with tire gauge to deter-mine if air charge needs adjustment. Tank pre-charge should bechecked annual!y; see instructions at right.In areas where the temperature is high for long periods of time, thetank pre-charge pressure may increase. This may reduce the tankdrawdown (amount of water available per cycle). If this occurs, re-duce the pre-charge pressure to match the pump cut-in setting ofthe pressure switch (normally 30 PSI).It is necessary to flush aL! air out of the piping system and waterreservoir portion of the pre-charged tank. This is required on newinstallations, pumps requiring repriming and pumps that have beendisassembled for service. Do this as follows:1. Open faucets furthest from tank and allow pump to operate.2. Air in the system will cause a sputtering flow; allow faucets torun until you have a steady, air free stream.3. Open and close faucets repeatedly until you are sure all air hasbeen removed.4. If stream does not become steady, air may be leaking into the sys-tem; check for leaks in the pipio_ on the suction side of the pump.NOTICE: To prevent waterlogging, check tank air charge annually.To Check Tank Air ChargeIf drawdown (amount of water available per cycle) decreases sig-nificantly, check as follows:1. To check air charge in tank, shut off electric power to pump,open faucet near tank, and drain completely.2. At the air valve in top of tank, check air pressure with standardtire gauge. Air pressure should be the same as the turn on pres-sure of the pressure switch (30 PSI).3. If the air pressure is below 30 PSI, add air to the tank. Use anair compressor or a portable air storage tank.4. Use soap or liquid detergent to check for air leaks around air valve.Continuous b_ _ a lealc If necessary, install new core inair valve. This is tiae same as those used for amons3b_le tabeless tires.1.1 2Tank nearly empty - air expands filling area above vinyl sep-arator.2. Water begins m enter tank - air is compressed above sepa-rator as it fills with water.x-d L_d X_d "_d3 4 54. Water being drawn from tank - compressed tank air forceswater out of separator.5. Separator completely empty - new cycle ready to begin.3. Pump-up cycle completed - air now compressed to cut offsetting of pressure switch.Figure 3PumpModel390.2509TABLE I - PUMP PERFORMANCE (In Gallons per Minute)NOTE: This system is designedfor pumping depths of 20 feet or less.Discharge Pumping Depth in FeetDescription Suct. Disch, Pressure PSI 5' 10' 15' 20'112HP S.W. Jet 1-1/4" 3/4" 40 7.3 6.2 5.2 4.24