Inspection-Receipt Of Equipment; General Information; Suitability Of The Well; Installation-Site & Support Equipment - Franklin Electric ST Serie Manual Del Usuario

A. INSPECTION-RECEIPT OF EQUIPMENT
Examine equipment at the time of receipt. Handle the
pump, cable, and motor carefully. This is very important
because of the precise alignment of the assembly and
the vulnerability of the cable. Report any damages or
shortages immediately to the freight carrier agent
and make notes on the freight bill of lading. This will
facilitate a satisfactory and prompt processing of a
claim adjustment.
B. 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 manufacturer's separate instruction
manual for the motor, and keep it for future reference.
C. 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 match 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 pump air and result in damage to the
pump or motor.
The well must be deep enough so that the pump suction is
at least 10 feet below the expected drawdown level.
The inside 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 bottom of the motor at least 10
feet from the bottom of the well, particularly where there is
a history of sand in the well. Do not install the pump or
motor within the perforations in the well casing unless the
well size permits the installation of a fl ow sleeve over unit
to ensure an adequate fl ow of water over the motor for
cooling purposes.
DO NOT INSTALL THE UNIT WITH THE MOTOR
RESTING ON THE BOTTOM, OR CLOSER THAN
10 FEET FROM THE BOTTOM OF THE WELL.
C A U T I O N
Submersible motors require a minimum cooling fl ow.
Please refer to the motor manufacturer's applications,
installation, maintenance manual (AIM manual) for motor
cooling requirements.
D. 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 is a general list of needed tools
and supplies.
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 and motor assembly, riser pipe, and
water in the riser pipes.
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 in
accordance with local regulations.
RISER PIPE
Make up the riser pipe from random lengths of threaded
and coupled pipe, and make arrangements to secure it at
the well by a well seal, surface plate, or other adapter.
Take great care to keep pipes clean and free from
pebbles, scale, and thread chips. Tighten each joint
securely as recommended by the AIM manual.
CHECK VALVES
It is recommended that one or more check valves
always be used in submersible pump installations. If the
pump does not have a built-in check valve, an inline
check valve should be installed in the discharge line
within 25 feet of the pump and below the drawdown
level of the water supply. For deeper settings, check
valves should be installed per the manufacturer's
recommendations. More than one check valve may be
required, but more than the recommended number of
check valves should not be used.
E. PUMP TO MOTOR ASSEMBLY
Pump should be assembled to the motor at the installation
site. Always assemble pump to motor vertically to reduce
strain on pump coupling and motor shaft. Assembling the
pump and motor horizontally or on angle may result in
damage to the pump shaft, coupling or motor shaft.
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