Texmo Industries Taro Pumps Borewell Parts list manual

Six Inch
Borewell
Submersible
Pump Sets
Instruction &
Operating Manual
OMBW004A 2020.01

OMBW004A 22020.01

Table of Contents
1. Introduction
2. Warranty information
3. Complying with standards
4. Contents in the packing box
5. Information about your pump
6. Schematic drawings
7. Key product specifications & features
8. Cross-section view
9. Pre-installation requirements
10. Installation procedures
11. Basic troubleshooting
12. Preventive maintenance checks
13. Do’s and don’ts
14. Important safety instructions
15. Storage & handling
16. Company contact information
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4. Contents of the
packing box
Based on the model you have purchased, your Borewell
Submersible is packed along with the instruction
manual and warranty card in either a corrugated box or
in a wooden crate.
1. Introduction
2. Warranty
information
3. Complying
standards
Thank you for choosing a quality product manufactured
by Texmo Industries. We request you to read this
manual carefully to ensure that the system you have
purchased will be operated correctly.
This manual is intended to provide you with information
on your product and information on installation and
operation. You will also find information on how you
could contact Texmo Industries, should you need further
information or help and support.
Please refer to your warranty card or visit
www.taropumps.com for more information on
your warranty.
IS 694: Polyvinyl Chloride insulated unsheathed and
sheathed cables / cords with rigid and flexible
conductor for rated voltages up to and
including 450/750 V
IS 3043: Code of Practice for earthing: Specifications
IS 8034: Submersible Pumpsets: Specifications
IS 9283: Motors for Submersible Pumpsets: Specifications
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5. Information about your pump
Taro Borewell Submersible pumpsets are manufactured
using high quality raw materials and components and
using state-of-the-art manufacturing facilities. Taro
Borewell Submersible pumpsets will provide trouble-
free performance if properly installed and maintained.
Prior to installation, read this manual carefully and
follow the instructions for installation and maintenance
of our submersible pump set so as to ensure reliable
operation and performance.
Applications include farm irrigation (Flood / Drip /
Sprinkler), domestic and community water supply, water
supply to high-rise buildings, municipal water supply,
mine dewatering, industrial water supply, cooling water
circulation systems, water treatment, firefighting,
fountains, aqua culture and salt fields.
The submersible pumpset should be installed by
technically qualified personnel in compliance with
national and local electrical codes and as per our
instructions in order to avoid electrical shocks,
unsatisfactory performance, and equipment failure.
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6. Schematic drawing
View of a 6 inch Submersible Pump Set is shown below in Fig. 1:
Fig. 1 View of 6 inch Submersible Pump Set
Pump
Stage Bowl
Cable Guard
Strainer
Motor
Strainer
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7. Key specifications & features
Standard Specifications of 6 inch Bore Well Submersible Pumps are shown below in TABLE 1:
Texmo Industries has a wide variety of 6 inch Borewell Submersibles to meet your requirements. Please consult our
sales team / your nearest dealer to meet your specific requirements.
Phase and Power Three Phase: 3 - 25 HP
Motor Type Wet
Starting method
< 7.5HP: DOL
7.5HP: DOL and SD Versions available
> 7.5HP: SD
Operating Voltage
Three phase
Premium: 350 - 440 V
Power: 300 - 400 V
Prime: 300 - 400 V
Frequency 50 Hz
Speed 2850 rpm
Duty S1 Continuous
Max. Fluid Temperature 330C
Impeller Type Radial / Mixed
Cable 3-core PVC Insulated
Product Performance Specification
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Smooth surface finish achieved by advanced manufacturing practices resulting friction free flow
inside the pump
Dynamically balanced impellers for long life
Special nitrile rubber bearing bushes for high wear resistance
Built-in NRV with low head loss design
Pumps fitted with cast steel impellers (except RR series)
Bowls cast in CI FG 200 A for better withstanding of sand erosion
Key features: Pump
Key features: Motor
Designed for wide voltage operation
The motor houses water lubricated journal and thrust bearings
The stator winding is water cooled and is made from poly-wrapped copper wire
Oil seal and sand guard is provided to prevent sand entry.
High grade carbon thrust bearing enables reliable operation
Winding overhang protector provided to ensure coil life
Motor is filled with a mixture of pure clean water mixed with anti-corrosive liquid for improved
motor life
LTB-4 bush for longer life for motors up to 17.5 HP
Carbon bushes for longer life for motors rated above 17.5 HP
Motors fitted with copper rotor (except RR series)
Equipped with rubber diaphragm to compensate thermal expansion of water
Easily re-windable squirrel cage motor
High quality seal rings and sand guard to protect motor from sand entry
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Stainless steel shafts
Cast Steel impeller in all series except TSS
Cast Steel integral diffuser and diffuser housing in UH series
Cast Steel diffuser in CI FG 200 diffuser housing for other series
CI FG 200A integral diffuser and diffuser housing for R series
All submersible motors are provided with 3-core PVC insulated flat cable of length 3 metres
To prevent ingress of pebbles into the intake during pumping, a Stainless Steel strainer is
wrapped around the inlet bracket and cable box
Key features: Wiring Harness
Strainer
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8. Cross-section view
Cross-section view of Three Phase 6 inch Submersible Motors is shown below in Fig. 2:
Fig. 2 Cross-section view of 6 inch three-phase submersible motors
No. PART NAME
1Motor Base
2Diaphragm cap
3Diaphragm
4 Cap Nut
5Washer (Fibre)
6Washer (SS)
7 Ball Locator
8 Thrust Bearing Assembly
9 "T" Bolt – Bottom
10 Circlip
11 Cheese Head Screw
12 Counter Thrust Bearing Ring
13 Journal Bush
14 Bottom Bearing Housing
15 Stator Housing Assembly
16 Rotor with Shaft
17 Top Bearing Housing
18 "T" Bolt – Top
19 Gasket
20 Cable Box
21 Hexagonal Nut
22 Oil Seal
23 Sand Guard - Stationary
24 Sand Guard - Rotary
25 Stud
26 Hexagonal Nut
27 Coupling
28 Coupling Key
29 3 Core PVC Insulated Cable
30 Plug
31 Cable Gland
32 Oval Washer
33 Key
34 Washer
35 Drain Plug
36 Hex. Headed Bolt
1
2
3
4
5
8
11
12
14
15
16
17
18
20
21
22
24
28
31
32
26
25
19
29
34
35
6
10
9
36
33
7
13
23
27
30
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Cross-section view of 6 inch Radial flow borewell submersible pumps is shown below in Fig. 3:
Fig. 3 Cross-section view of 6 inch radial flow borewell submersible pumps
No. PART NAME
1Inlet Bracket
2Strainer
3 CSK Screw
4 Inlet Sealing Ring
5Impeller
6Key
7 Distance Sleeve
8Diffuser Housing Assy -
Intermediate
8.1 Diffuser
8.2 Diffuser Housing
8.3 Diffuser Bush – Intermediate
9 Diffuser Housing Assy - Stage
9.1 Diffuser
9.2 Diffuser Housing
9.3 Diffuser Bush - Stage
10 Shaft
11 Top Sleeve
12 Pump Bearing Bush / Top Bush
13 Lock Nut
14 Pump Bearing Housing
15 NRV Seat
16 Non-Return Valve
17 NRV Spring
18 Delivery Casing
19 "Tie" Bar
20 Hexagonal Nut
21 Cable Clamp
22 CSK Screw
23 Cable Guard
1
2
3
5
6
78
10
11
13
15
16
17
18
19
20
21
22
23
4
8.1
8.2
8.3
9
9.1
9.2
9.3
12
14
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Cross-section view of 6 inch mixed flow Borewell submersible pump is shown below in Fig. 4:
Fig. 4 Cross-section view of 6 inch mixed flow borewell submersible pump
No. PART NAME
1Inlet Bracket
2Strainer
3Pump Shaft
4 CSK Screw
5.1 Inlet Bowl
5.2 Stage Bowl
5.3 Intermediate Bowl
5.4 Top Bowl
6 Counter Thrust Collar
7 Bowl Thrust Ring
8 Hexagonal Nut
9Stud
10 Impeller Wear Ring
11 Impeller
12 Bowl Ring
13.1 Inlet Bowl Bush
13.2 Stage Bowl Bush
13.3 Intermediate /Top Bowl Bush
14 Distance Sleeve
15 Stage 'O' Ring
16 Impeller Key
17 PumpTop Sleeve
18 Lock Nut
19 Sand Protective Cap
20 NRV Seat
21 Non-Return Valve
22 Bush-NRV Guide / NRV SPRING
23 Delivery Casing
24 CSK Screw
25 Cable Clamp
26 Cable Guard
2
1
3
4
5.3
8
9
10
11
12
5.2
13.2
14
15
16
17
18
5.4
19
20
21
23
24
25
26
22
13.3
13.3
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Cross-section view of 6 inch radial flow stainless steel borewell submersible pump, TSS Series, is shown below
in Fig. 5:
Fig. 5 Cross-section view of 6 inch radial flow stainless steel borewell submersible pump
No. PART NAME
1Inlet Bracket
2Strainer
3Hexagon Nut
4Bowl Stage
5Impeller
6NRV Seat
7Bowl Top
8Tie Bar
9Delivery Casing
10 NRV
11 Lock Nut
12 Nut
13 Sleeve
14 Distance Sleeve
15 Pump Shaft
16 Parallel Key
98
7
5
4
3
2
1
6
10
11
12
13
14
16
15
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Cross-section view of 6 inch radial flow ultra head borewell submersible, TRS UH Series, is shown below
in Fig. 6:
Fig. 6 Cross-section view of 6 inch radial flow ultra head borewell submersible pump
No. PART NAME
1Inlet Bracket
2Strainer
3 Sub Pump Shaft
4 Distance Sleeve
5 Inlet Thrust Ring
6 Hex Head Bolt
7 Inlet Seal Ring
8Bush
9 Gasket - Circular
10 Impeller
11 Sleeve
12 Diffuser Housing
13 Cover Plate Top
14 Pump Housing
15 NRV Rubber Seat
16 Non Return Valve
17 Tie Bar & Hex Bolt
18 Delivery Casing
19 CSK Screw
20 Compression Spring
21 Cap
22 Lock Nut
23 Bush
24 Cover Plate
25 Parallel Key
26 Bush - Intermediate
27 Sleeve
28 Inlet / Bowl Bush
29 Collar
30 Hex Socket Set Screw
31 Cable Guard
1
4
29
27 7
8
26
5
28
9
11
24
25
12
13
14
23
22
21
16
20
17
18
3
10
6
2
19
30
15
31
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9. Pre-installation requirements
Arrangement for Installation
General Installation Precautions
Open packaging and note down the serial number and model for future reference
Inspect the purchased pump for damage / leakage
Ensure all fasteners are tightened properly
Check the inside diameter of well casing to ensure that it is not smaller than the size of
the submersible
Check depth of borewell to determine the length of piping and power cable required
Use the services of a professional and trained mechanic with experience in erecting borewell
submersibles
Ensure proper safety during installation
Ensure availability of three-phase power
Note
If you detect damage or discrepancy in the product, contact the dealer from
whom the pump was purchased
Warning
Do not use this pump for oil or toxic, acetic, corrosive and / or flammable
liquids. Pumping flammable liquids could cause explosion
Caution
Do not use the pump cable for lifting / lowering pump
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Caution
Use trained professionals to install the submersible pump. Improper fitment
can cause pump to fall into the bottom of the bore
Warning
Use a power supply cable that has sufficient rating and has been exclusively
provided for the pump
Warning
Provide proper earthing as improper earthing can cause electrical shock
Caution
Use a megger to verify the Insulation resistance of the motor. Insulation
resistance should be 20MΩ minimum
Note
It is recommended to use a control panel with single phase protector, dry run
protector, and overload protector
Caution
Do not place submersible pump with its base resting at the bottom of the
borewell. There is a possibility for the motor and pump to be buried in the silt
which collects at the bottom of the bore well
Warning
Mount the pump vertically. Never inclined or horizontal
OMBW004A 16 2020.01

Caution
Do not run the pump dry. It could lead to product damage
Warning
Switch OFF power supply and ensure that impeller completely stops before
changing rotation or making any adjustments
Caution
Do not use this pump for pumping liquid exceeding 330C as this may lead to
product failure
Warning
Do not switch ON the pump if there is any human contact with the pumped
medium. If any electrical leakage occurs, this could be fatal
Note
For three-phase models, it is recommended to use a starter with Single-Phase
preventer, overload relay, and dry run protection
Operation Precautions
OMBW004A 17 2020.01

Caution
The supply voltage should be within -15% to +6% of rated voltage.
Water temperature for operation of the pump should not exceed 330C
Failure to observe the precautions given above could cause the pump to
malfunction, which may lead to current leakage or electrical shock.
10. Installation procedure
Please follow below procedure to install the pump and motor.
The submersible motor is supplied pre-filled with a mixture of clear cold drinking water and anti-corrosive liquid.
The following steps are executed prior to installation:
Installation
Position the motor vertically on its base
Check if all fasteners are tight. Tighten if required
The two threaded plugs provided at the top / circumference of the cable box are removed as
shown in Fig. 7 below.
Check the motor and if required, top up the motor with clear cold drinking water.
Air bubbles, if any, are removed by gently rocking the motor to and fro.
Check water level in the motor and if required, top up with cold clear water.
Fig. 7 Topping up Submersible Motor with pure drinking water
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The two threaded plugs are then re-assembled, ensuring the motor is encapsulated
Dry the exterior of the motor and check thoroughly for water leakage
If there is no leakage, the motor is now ready for coupling with the pump and then installation
Place the motor key in the motor shaft keyway and then slide the coupling over the motor shaft
until it rests on the sand guard
Refer the sequence shown in Fig. 8 below for insulating the cable joint for underwater application:
Danger
Hazardous voltage will cause death, serious injury, electrocution.
Disconnect all power before working on this equipment and that it cannot be
accidentally switched ON.
Submersible motors are supplied with a 3-core PVC insulated flat cable of length 3 metres
The free end of the 3-core cable of the motor needs to be connected to supply cable from the
control panel
As this joint is always nearly submerged in water, the joint needs to be waterproof
Before submerging the unit, measure the insulation resistance using a megger of 500 VDC
Ensure contact points are clean
Connect measuring cable to the ground conductor
Connect the other measuring cable to every core of the motor cable in succession
Ensure that the insulation resistance as shown on the megger is a minimum of 20MΩ
Waterproofing the Submersible Motor Cable - Supply Cable Joint
Checking Insulation Resistance
OMBW004A 19 2020.01

Fig. 8 Cable Joint for Under Water Application
Procedure for joining and insulating the
3 core conductors
Proedure for joining and insulating the
cable joint for under-water cable
Step 1: Soldering / knot the copper strands Step 6: Layer 1 - 1st layer of virgin rubber insulation
Step 7: Layer 2 - 1st layer of PVC insulation tape
Step 8: Layer 3 - 2nd layer of PVC insulation tape
Step 2: Layer 1 - 1st layer of virgin rubber insulation
Step 3: Layer 2 - 1st layer of PVC insulation tape
Step 4: Layer 3 - 2nd layer of virgin rubber insulation
Step 5: Layer 4 - 2nd layer of PVC insulation tape
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