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Part of the water is di-when pressure reaches 60 pounds. verted back to the jet where it passes through the nozzle and venturi. This creates more vacuum to draw in more water. Check Valve or Foot Valve In shallow wells (less than 20 feet deep), the vacuum cre- This pump is equipped with a buik:m check valve. Install a ated at the pump is enough to pull water to the pump. check valve as close to well as possible on well point in- Therefore, for shallow well use the jet is built into the pmnp. stallations. A foot valve must be installed in the well on dug or cased wells. See Figures 2A and 2B, Page 4. For long horPre- Charged Tank izontal pipe runs, install check valve as close to well as pos- The tank serves two functions. It provides a reservoir of sible (all types of wells). water under pressure and maintains a cushion of air pres sure to prevent pipe hammering and possible damage to plumbing components. When water is drawn off through the house fixtures, the pressure in the tank is lowered and the pump starts, 3 INSTALLATION INSTALLATION Piping in the Well The Shallow Well Water System can be installed on a dug well, drilled well or with a driven point. In a dug or cased well, a foot valve and strainer should be installed for easy priming. It should be installed five to ten feet below the lowest level to which the water vdll drop while the pump is operating (pumping water level). To keep sediment from clogging the strainer, be sure it is five to ten feet above the bottom of the well. Before installing the foot valve, make sure that it works freely. When using a foot valve, a priming tee and plug as shown in Figure 1, are recommended. Priming Plug, PrimingTee (User Supplied) From Well Figure I When installed on a driven point well, your Shallow Well Water System should have a check valve installed as shown in Figure 2A. [_eck Valve t Steel Drive Pipe D,.__dvecoupling Well point Figure 2A _ Driven point For a pump at sea level mounted directly over the well, be sure the total lift from the pumping water level to the pump does not exceed 20 feet. This will be less if the pump is off set from the well. 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 example, at Denver, Colorado 0Elev. 5,000') the pump loses five feet of lift. The maximum depth from which it would pump water would therefore be 15 feet. Well Seal Plastic Pipe and Strainer ;11 1293 Dug or Cased Well Figure 2B PUMP/TANK INSTALLATION Pump NOTICE: Use Teflon tape supplied with the pump or Plasto- Joint Stik' for making all pipe-thread connections to the pump itself. To avoid stress-crocking, do not use pipe joint compounds on the pump. 1. Wrap male pipe threads being attached to pump with one or two layers of Teflon tape. Cover entire threaded portion of pipe. 2. Do not overtighten threaded fittings in the plastic pump. Be sure you do not try to tighten joint past thread stop in pump port! 3. If leaks occur, remove fittings, clean offold tape, rewrap with two to three layers of tape and remake the connection. If joint still leaks, replace the fittings (fittings may be undersized). 4. Be sure to support all piping connected to the System. _Lake Chemical Co., Chicago, Illinois Horizontal Piping from Well to Pump When the pump is offset more than 25 feet from the well, horizontal suction pipe size should be increased to reduce friction losses. Never install a suction pipe that is smaller than the suction tapping of the pump. 4 INSTALLATION 1-1/4" 1-1/2" 2" Up to 25 Ft. 25 to 50 Ft. 50 to 200 Ft. Discharge Pipe Sizes When the pttmp is some distance from the house or point of water use, the discharge pipe size should be increased to reduce pressure losses caused by friction. 1" 1-1/4" 1-1/2" Upto 25 Ft. 25 to 1O0 Ft. 1O0 to 600 Ft. Tank Tanks are pre-charged with 40 PSI air pressure at the factory. Your tank requires an air charge of 40 pounds per square inch (PSI) for proper operation; check tank pressure with tire gauge to determine ff air charge needs adjustment. Tank pre-charge shonld be checked annually; see instructions at right. In areas where the temperature is high for long periods of time, the tank pre-charge pressure may increase. This may reduce the tank drawdown (amount of water available per cycle). If this occurs, reduce the pre-charge pressure to two PSI below the pump cut-in setting of the pressure switch (normally to 38 PSD. It is necessary to flush all air out of the piping system and water reservoir portion of the pre-charged tank. This is re quired on new installations, pumps requiring repriming and pumps that have been disassembled 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 to run until you have a steady, air free stream. 3. Open and close faucets repeatedly until you are sure all air has been removed. 4. If stream does not become steady,...
Questo manuale è adatto anche per i modelli :Depuratori d - 390.2521 (740.14 kb)
Depuratori d - 390.2521 (740.14 kb)
Depuratori d - 390.2521 (740.14 kb)