Franklin Electric FS Series User manual

OWNER'S MANUAL
FS/FT Series - Borehole Pumps
INTRODUCTION
The good functioning of the electric submersible pump,
its reliability and lasting depend from the severe respect
of the present notes and those concerning the electric
motor by the installer and the end user.
Read carefully and take note of prescriptions,
suggestions and indications necessary for a correct use.
On receipt of the electric submersible pump check
that technical data reported on the identication plate
correspond to the order.
Check, furthermore, that during transport the pump has
not been damaged.
PURPOSE OF THIS MANUAL
The instructions for use contained in the present
manual refer to the pump only. Therefore, for the use of
the electric submersible pump, these instructions must
be integrated with those of the manual of the electric
submersible motor.
Keep this manual and any eventual further
documentation in a suitable place easy to reach by the
operators when necessary.
Eventual revisions and modications will be made
without previous notice.
STANDARD REFERENCES
This borehole electric pump has been studied and
realized in compliance with: Machine Directive 98/37/CE.
Conformity will be no longer valid in case of
modications made on the machines without the
acceptance of the manufacturer or in case of improper
use or, in any case, not foreseen by the present manual,
by the technical documentation or by the plate data.
SAFETY
Symbology
Exemplication of symbologies used for protection of
persons, electric pump and relevant equipment:
DANGER
The non observance of the prescription involves the
risk of damages to people and/or things.
TECHNICAL DANGER
The non observance of the prescription involves the risk
of technical damages to the pump and / or installation.
Warnings
Operations reported in this manual, with particular
reference to:
-transport
-installation
-electric and mechanical connections
-starting, operation and eventual maintenance or stop
of service
Must be carried out by experienced personnel who well
know the rules concerning safety of working environment
and who has taken vision and carefully veried the
content of this manual and of any other documentation
enclosed to the product.

2
Before any intervention of checking or
maintenance of the installation or electric
equipment, it’s indispensable to disconnect
electric power supply being sure that same
cannot be reconnected inadvertently.
Never tamper or remove installed protections and
safety devices; when necessary, ask for intervention of
competent personnel.
Be sure to operate in safety conditions with well
dimensioned equipment and instrumentations
complying with local safety regulations.
The acoustic level of electric submersible pumps, when
correctly installed, does not reach 70 dB(A).
TECH. CHARACTERISTICS & USE
Technical description
The borehole electric pumps, driven by electric
motor, are mainly used in deep wells for pumping
underground waters.
The pumps are mixed-ow multistage centrifugal type
with incorporated non-return valve on delivery and
suction support tted for coupling the motor, protected
by suitable grid.
All pumps are supplied complete with stainless
steel cable guard placed outside the pump body, for
protection of the electric cable.
Use limits
The hydraulic coupled to the electric motor originates
the “electric submersible pump” whose main
applications are: irrigation, municipal water systems,
civil, industrial and mining eld, re-ghting installations,
thermoelectric centrals, articial snowing... .
Use conditions
in standard execution this borehole electric pump is
suitable to deliver even chemically aggressive water
with maximum 70g/ m3 suspended solids.
As regards:
- Max. water temperature;
- Well dimension and minimum capacity necessary to
motor cooling;
- Max. startings per hour;
- Electric and functioning characteristics;
Read instruction manual and technical documentation
of the submersible motor.
In case of use in different conditions from the
suggested ones or constructive modications
made without previous authorization, warranty
foreseen in the general sale conditions will be
no longer valid and the manufacturer will not
be responsible of eventual damages caused to
persons, animals or things.
Use limits
The pump is supplied complete with plates reporting the
characteristic data: a plate is sticked outside the pump,
while a copy of the same, contained in an envelope, is
enclosed to the pump body for an easy consultation of
the reported data, when necessary.
In case of request for warranty it’s important to inform
the manufacturer of all characteristic data.
HANDLING & STORAGE
Handling
To reduce risks during lifting and handling operations,
be sure to operate in security conditions checking that
equipments are complying with safety rules and suitable
for the weight, dimensions and shape of the pump.
Handle the pump with protective gloves avoiding cut
risks to hands.
Before handling and lifting check:
Weight of the pump (reported on the plate).
The lifting hook position (g. 2).
When lifting and placing the pump be sure
of its stability before releasing the lifting
equipment (g. 3).
Fig. 2
Fig. 3

3
Storage
Electric submersible pumps must be stored in covered,
dry and well aerated rooms.
Keep the pump in vertical position by suitable
anchor clamps checking its stability in order to
avoid dangerous falls (g. 4).
In case of long storage, protect with grease the motor
coupling ange against oxidation and rotate periodically
by hand the shaft to avoid possible locking of the same.
INSTALLATION
Inspections before installation
Before installation of the electric submersible pump
proceed as follows:
- check that implements (ropes, belts, chains etc.) and
equipment (winch, crane, hoist, gin etc.) to be used
for handling, lifting and positioning the pump in the
well, are well dimensioned to the weight, efcient
and complying with safety norms.
- check right dimensions of the well, its strainghtness
and dynamic level.
- verify water quality, its temperature and eventual
presence of sand, mud and dissolved gas.
- verify that rated motor power is equal or higher than
the max. power absorbed by the pump and that the
main electric network has sufcient power.
- check efciency of probes against dry functioning.
- verify that pump rotates in the same direction of
the motor.
Motor-pump coupling
Flanges and shaft projection
This electric submersible pump is tted to be coupled to
submersible motors with ange and shaft projection:
- complying with Nema norms for 6” – 8” motors
- according to different drawing for motors ≥ 10”.
For motor/pump coupling follow scrupulously both
instructions concerning the pump and the motor.
Fig. 4
Inspections for coupling and rotating direction
Before coupling be sure that motor data plate
corresponds to pump data and that also ange
and shaft extension coincide.
Verify that motor and pump rotate in the
same direction.
Coupling
Proceed as follows:
- make use of protective gloves.
- verify that the rotor of motor and pump shaft are turning
free by hand. If you make use of standard implements
like pliers, screwdrivers or pins, protect coupling
surfaces by suitable tape to prevent damages.
- clean carefully surfaces to be coupled, smoothing
when necessary and removing eventual
excessive paint.
- place the motor in vertical position checking its
stability during the whole coupling operation.
- using the suitable equipment (mobile crane, hoist,
etc.), lift the pump and when perfectly vertical over
the motor lower it slowly taking care that the motor
shaft enters freely into the pump coupling (g 5).
Safeguard your hands during this operation!
- pilot coupling keeping the hands outside the pump,
far from anges.
- verify that electric cables of the motor are in
correspondence with relevant pump seats.
In case of motors with splined shaft projection, we
suggest to lubricate the coupling splines with a light
coat of antipollution and waterproof grease against
wearing due to the eventual presence of sand.
Fig. 5

4
- screw diagonally securing screw, possibly by
dynamometric spanner (g. 6), at the following values:
- adjust electric cables outside the pump and cover
them by the suitable guard (g. 7).
Should the assembled group exceeds lengths
“L” indicated on the table no.1, for positioning
it horizontally or lifting it again vertically, make
use of an auxiliary support for preventing
possible damages which might be caused by
bending stress (g.8).
6”motor driving torque = 60 Nm 45 lb. -ft.
8”motor driving torque = 140 Nm 100 lb. -ft.
10”motor driving torque = 200 Nm 150 lb. -ft.
12”motor driving torque = 280 Nm 205 lb. -ft.
Fig. 6
Fig. 7
Ø group Max. “L” Length
6”3,3 m
8”3,5 m
10” - 12” - 14”4,0 m
Fig.8
Installation of the group
Precautionary inspections
For installation follow scrupulously pump and motor
instructions.
Check that lifting equipment comply with safety
rules and suitable to support the weight of
the group plus the weight of pipeline, valves
and cables.
In case of lifting out the group from the well,
remember to add to above loads the weight of
the water contained in the pipeline by the non-
return valve of the pump.
Verify that the well is straight and enough dimensioned
to guarantee a correct installation of the electric pump.
Verify that water characteristics and dynamic
level are in the foreseen limits and that well
has been perfectly cleaned from sand and
other debris.
Should the assembled group exceeds lengths
stated on table no.1, for lifting it vertically,
make use of an auxiliary support for preventing
possible damages which might be caused by
bending stress (g. 8).

5
Installation in deep well
Lower the electric pump into the well taking care not
to damage either the electric cable nor the level relay
cables (g. 9).
In case of anged pipeline, anges should be equipped
with suitable slots for cable passage in order to
avoid damages. Don’t forget to insert among anges
relevant gaskets.
In case of threaded pipes, assemble rstly the upper
threaded sleeve and than the supporting clamp in order
to avoid a dangerous disengagement of the rising pipe
from the assembling bracket.
When using plastic pipeline it’s necessary to
support permanently the group by suitable
antiwear inextensible cables (plated steel –
stainless steel – polyester etc.).
Each 2-4 meter fasten the electric cables to the rising
pipe using the suitable waterproof clamps (g. 9 pos.
10).
During the lowering of the electric pump in the well,
measure the insulation resistance following the notes
indicated in the motor manual.
The installation is completed when the regulating valve
and the non-return valve are mounted and the electric
pump is on the following functioning conditions (g 9):
- positioned at least 2 mt from the bottom of well
(height C)
- positioned at least 1 mt (height D) above the well
suction strainer; this is essential to ensure motor
cooling (see motor cooling conditions)
- with dynamic level of water (height B) at least 2 ÷
2,5 mt above the suction strainer of the pump. The
dynamic level should, in any case, satisfy the NPSH
required by the pump.
Consider attentively the problems due to the seasonal
dropping of water table and to the excessive pumping
in comparison with the well capacity.
1- Electric pump
2- Electric panel
3- Gate valve
4- Pressure gauge
5- Non-return valve
6- Electrodes for water level control
7- Well grid
8- Well bottom
9- Main electric cable
10 - Cable clamps
11 - Well cover
A- Static level
B- Dynamic level
C- Distance from bottom of well
D- Distance from grid of well
Fig.9

6
On rst startings of electric pump, it’s necessary to
check that the pumped water is not cloudy with sand
or lime. In the afrmative, it’s necessary to reduce
immediately the pump capacity, closing the gate-valve,
until the water is clear. This situation must be obtained
in a short time, max. 8-10 min.; on the contrary, to avoid
heavy damages to the pump, it’s necessary to effect
a further cleaning of the well using a pump suitable to
this purpose.
Functioning
When respecting foreseen functioning limits the electric
pump will operate without vibrations or anomalous
noises.
Keep the hydraulic (capacity – pressure) and
electric working conditions within the values
shown on the plate (please refer to par. 3-4).
Incorrect installation or unsuitable use always causes
failure undue wears and dangerous damages.
Every 1000 hours approx. of functioning it’s necessary
to check that operating data are respected; in case of
anomalies or variations of operating data refer to par. 8
following relevant suggestions .
Refer to information reported on the manual of the
electric motor too.
Maintenance and spare parts
When respecting foreseen functioning limits, ordinary
maintenance of the electric pump is not necessary.
Extraordinary maintenance and repairing
must be carried out by qualied and
skilled personnel.
Original spare parts only must be used.
For lifting out the electric pump from the well proceed
on the contrary of what stated for installation
(see par. 5). Always follow safety conditions (par. 2)
Before any intervention of checking or
maintenance it’s indispensable to disconnect
electric power supply being sure that same
cannot be reconnected inadvertently; hearth
cables must be disconnected at the last.
When ordering spare parts indicate the following:
1) type of pump
2) serial number
3) position and denomination of parts
4) quantity.
USE & MAINTENANCE
Starting
For starting operations refer to the instructions indicated
on the motor manual.
Before starting the electric pump carry out a nal
check on the hydraulic connection and on the electrical
equipment and relevant ratings.
Activate all safety procedures foreseen and
check attentively the efciency of protections.
When the electric pump is installed into wells
of particular depths, the column pipe must be
lled with water before running, to avoid the
consequences coming from the rotor rising
during starting.
If the electric motor is tted for rotating in both
directions, start the electric pump with gate valve
slightly opened in order to check the correct rotation
according to pressure indicated on the pressure gauge.
If rotation is correct, the pressure gauge will indicate
the same pressure shown on the catalogue to a nearby
0 delivery. Worthy to remind that the height between
pressure gauge and dynamic level must be added to
the pressure value readable on the pressure gauge.
If rotation is wrong, pressure will be much lower, but the
absorbed current might be higher than the foreseen.
To invert rotation in three-phase motors swap over two
of the phase wires.
Never let pump functioning in wrong direction
for more than 3-4 minutes.
If the electric motor is tted for rotating in one direction
only for the correct electric connection refer to
instructions indicated on the motor manual; even in
this case starting must be done with gate-valve slightly
open.
With the pump functioning, gradually open the gate-
valve up to reach the required performances, checking
with an amperometer, that the current absorbed does
not exceed the value shown on the motor plate.
If necessary lower the current absorbed (Amperes)
below the value shown on the motor plate, reducing the
capacity closing the gate-valve and, afterwards, setting
the protection relays accordingly.
The relay setting should never exceed the value
indicated on the motor plate.
Check that the capacity obtained is according to the
cooling conditions of electric motor.
Never let pump functioning with 0 capacity
(gate-valve closed) for more than 2-3 minutes.

7
PROBLEMS PROBABLE CAUSES REMEDIES
The borehole electric pump
works but does not deliver
water
Lack of water or well level too low check level and relay efciency
Bored delivery pipe-line or connection leakages Disassemble, repair or replace defective parts
Sanded pump Disassemble, clean, drain the well and evaluate
convenience of rising the level of the pump
Suction grid obstructed by straw, leaves or plastic Very causes and clean
Closed gate-valve Open the gate-valve
Blocked non-return valve Disassemble, repair or replace
Anticlockwise rotation (only for 3-phase electric pumps) Invert rotation direction. See instructions at par. 6.1
Insufcient pressure of the pump Replace the electric pump with another of higher
performances
Damaged hydraulic components Disassemble and replace damaged components
Breakages of: pump shaft, motor shaft or coupling Disassemble and replace broken components
Insufcient capacity and
head
Anticlockwise rotation (only for 3-phase electric pumps) Invert rotation direction. See instructions at par. 6.1
Considerable lowering of the dynamic level Apply skilled well drillers or replace the pump with
another of higher performances
Suction grid partially obstructed Verify causes and clean
Obstructed or partially blocked non-return valve Lift out the electric pump, clean, repair or replace
defective components
Delivery pipe-line squashed, bent or heavy incrusted Disassembly, clean or replace
Bored delivery pipe-line or connection leakages Disassembly, clean or replace
Air or other gas dissolved in the water Apply competent well drillers
Worn hydraulic components of the pump Lift out the elec. pump and repair. Caution!! Follow
scrupulously what foreseen by warranty conditions
Vibrations and noise
Presense of gas in the pumped liquid Apply competent well drillers
Weared bushes and/or bearings Disassembly and replace weared parts
Excessive presense of sand or gravel This condition causes heavy damages. See par. 6.1
Entry of air into the pump due to variation of level Reset dynamic level height and reduce capacity. See
par. 5.3
DEFECTIVE FUNCTIONING
Other functioning defects might be due to electrical or instrumental causes, to quality and temperature of the pumped water, etc. To verify causes and
remedies refer to suggestions given by the manufacturer of the electric submersible motor.

www.franklin-electric.com
106597101 Rev. 2 06/12
Franklin Electric (Australia) Pty. Ltd.
106 - 110 Micro Circuit
Dandenong South, Victoria 3175
Australia
Phone: [phone]
Fax: [phone]
www.franklin-electric.com.au
AUSTRALIA / NEW ZEALAND
Motores Franklin S.A. de C.V.
Avenida Churubusco #1600
(Bodega #16)
Col. Francisco I. Madero
Monterrey, N.L.
Mexico C.P. 64560
Phone: [phone]
Fax: [phone]
LATIN AMERICA
Franklin Electric Co., Inc.
400 E. Spring St., Bluffton, IN 46714 USA
Tel: [phone] Fax: [phone]
UNITED STATES
Franklin Electric (Shanghai) Co. Ltd.
Unit 1002-03, Shanghai Central Plaza
No. 227, Huang Pi Bei Road,
Shanghai 200003, China
Phone: [phone]
Fax: [phone]
CHINA
Franklin Electric (SEA) Pte Ltd.
Singapore Representative Ofce
1 Changi Business Park Avenue 1
# 03-01, Ultro Building
Singapore 486058
Phone: [phone]
Fax: [phone]
ASEAN