Franklin Water Pump owner manual General Information, Suitability of the Well

C. GENERAL INFORMATION

The Submersible pump unit comprises a vertical Turbine pump assembly directly-coupled to a Submersible electric motor. The connecting bracket accommodates the coupling between the pump and motor shafts and also serves as the water intake passage.

The pump unit is suspended in the well by the riser pipe, and the electric power is taken down from the well head to the motor by the Submersible cable which is secured at intervals to the riser pipe.

Please read the manufactures separate instruction manual for the motor, and keep it for future reference.

D. SUITABILITY OF THE WELL

Submersible Pumps as well as all water pumps, are designed to handle clean, cool, clear water. Water from an undeveloped well often contains excessive amounts of sand, dirt and other abrasives which can cause damage to the pump.

Install the pump in a well which has already been properly developed with a test pump.

The test pump also provides a means to determine the capacity and setting of the pump to the yield

of the well. If the pump removes water at a higher rate than the well produces, the drawdown will be excessive and this will cause the pump to cavitate, resulting in damge to the pump or motor.

The well must be deep enough so that the pump suction is at least 10 ft. below the expected drawdown level.

The insider diameter of the well casing must be large enough to allow lowering the unit into the well without damage to the “Power Cable”, and the splice between the power cable and the Motor leads. Check that the well is large enough to allow installation of the pump at the required depth. Keep the pump atleast 5 ft. from the bottom, particularly where there is a history of sand in the well. Do not install the pump below the lowest perforations in the well casing unless the well size permits the installation of a shroud over unit to ensure an adequate flow of water over the motor for cooling purposes.

The Motor must always be immersed in flowing water.

*CAUTION*

DO NOT INSTALL THE UNIT WITH THE MOTOR RESTING ON THE BOTTOM, OR CLOSER THAN FIVE FEET FROM THE BOTTOM OF THE WELL.

E. INSTALLATION-

SITE & SUPPORT EQUIPMENT

Equipment & Material Required;

The material and equipment necessary for the installation of the pump will vary with the pump size and type of installation. The following list of tools and supplies are offered as a guide.

-Materials; Anti-galling lubricant, thread compound, lubricating oil, grease.

-Tools & Instruments; Tripod with chain blocks, or rig with power hoist, pipe clamps, megger, pipe wrenches, and mechanical tools.

Be sure that the equipment is strong enough to lift the total weight of the pump, riser pipe and water in the riser pipes.

When the Power Cable is supplied on a reel, support the reel on a piece of pipe laid across a pair of sturdy saw horses. Locate the reel about six feet from the well so that the cable unwinds from the top.

FOUNDATION

Construct a concrete foundation which must be RIGID, LEVEL and of adequate STRENGTH to support the complete weight of the pump, motor, column, plus the weight of the water pumping through it without exceeding the permissible bearing pressure for the subsoil.

Support the riser pipe at the well head with a well seal, surface plate, or other adapter which seals the well in accordance with local regulations. Make provision for a conduit to carry the power cable into the well.

RISER PIPE

Make up the riser pipe from random lenghts of threaded and coupled pipe, and make arrangements to secure it at the well by a well seal, surface plate, or other adapter. Use schedule 40 steel pipe for settings less than 600 ft. For deeper settings, use schedule 40 for the bottom 600 ft., and for the remainder use schedule 80.

Take great care to keep pipes clean and free from pebbles, scale, and thread chips. Tighten each joint securely. Make sound, airtight connections at all fittings.

CHECK VALVES

If the pump setting exceeds 100 ft., install a check valve at the first joint in the riser pipe above the pump.

For a deep setting pump, a line checkvalve is recommended for every 200 ft. of column pipe. Always use an additional check valve at the surface if the pump is part of a pressure system or if the pressure head exceeds 500 ft.

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