Texmo Industries TARO TSM Series Parts list manual

Three Phase
Openwell
Submersible
Monoblocks
Instruction &
Operating Manual
OMOW001A 2020.01

OMOW001A 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
OMOW001A 32020.01

4. Contents of the
packing box
Based on model you have purchased, your Openwell
Submersible Monoblock is packed along with
instruction manual and warranty card in either a
corrugated box or in a wooden crate.
1. Introduction
2. Warranty
information
3. Complying
with 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 3043: Code of Practice for earthing: specifications
IS 9283: Motors for Submersible Pumpsets:
specifications
IS13730: Specifications for particular types of
winding wires
IS 14220: Open well Submersible Pumpsets: specifications
OMOW001A 42020.01

5. Information about your pump
The discharge of a pump depends on the static suction
lift. During summer, the static suction lift increases
due to drop in water levels, and this result in reduced
discharge. This will require frequent lowering of
the pump to reduce the static suction lift. During
monsoons, water levels can significantly rise. Under
such conditions, there is a possibility that the pump can
get submerged, resulting in the motor getting damaged.
Such issues are overcome by the use of an Openwell
Submersible pump as it operates submerged in water.
Texmo Openwell Submersibles are manufactured using
high quality raw materials and components using state-
of-the-art manufacturing facilities and will give trouble
free performance if properly installed and maintained.
The Openwell Submersible is a compact pumping
system with the pump and motor mounted on a
common shaft. As a coupling is not required, alignment
of the pump and motor is assured. Installation is
therefore quick and easy. Openwell Submersible do
not require frequent maintenance as the packing
rope and grease lubricated deep groove ball bearings
are replaced by oil seals and water lubricated journal
bearings respectively. Openwell Submersible find
application irrigation of farms, domestic water supply,
cooling water circulating systems, fountains, dairies,
water supply to high rise buildings, housing complexes,
bungalows, cattle and poultry farms.
Prior to installation, read this manual carefully
and follow the instructions for installation and
maintenance of our Openwell Submersibles so as to
ensure reliable operation. The Openwell Submersibles
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 Openwell Submersible pump set is shown below in Fig. 1:
Fig. 1 View of Openwell Submersible pump Set
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7. Key specifications & features
Standard specification of Openwell Submersible is shown below in TABLE 1:
Power 3.0 - 15 HP
Phase 3
Motor Type Squirrel cage induction motor – wet type
Starting method
3.0 – 7.5 HP: DOL
5.0 – 15.0 HP: SD
Operating Voltage
TSM Z / TSM Series: 350 – 440V
TSM ZR / TSM ZRC Series: 220 – 400V
Frequency 50 Hz
Speed 2850 rpm
Duty S1 Continuous
Max. Fluid Temperature 330C
Impeller Type Radial
Copper rotor for
improved performance TSM, TSM Z and TSM ZRC Series
Key features
Wide voltage band operation
The stator winding is water cooled and is made from poly-wrapped copper wire
The motor houses water lubricated journal bearings to take up the radial loads
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A water lubricated thrust bearing is provided to take up the thrust load generated by the
rotating impeller
A water lubricated counter thrust bearing is provided to limit the movement of the shaft when
the Openwell Submersible is switched OFF
The rotors are dynamically balanced
Adequate motor surface area is provided for effective cooling
The water filled motor is provided with single lip oil seals to prevent the pumped medium from
entering the motor
To prevent sand / small stones from entering the seal chamber, a sand guard is provided
The impeller is dynamically balanced
Strainer assembly, fitted on the pump suction flange, prevents the entrance of large size debris
into the pump
Openwell submersibles to be connected to a DOL starter are provided with a single 3 core PVC
flat cable
Openwell submersibles to be connected to a Star-Delta starter are provided with two separate 3
core PVC flat cables
Electrical Connection
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8. Cross-section view
Cross-section view of TSM / TSM Z Series Openwell Submersible Monoblock is shown below in Fig. 2:
Fig. 2 Cross-section view of open well submersible monoblock TSM / TSM Z
No. PART NAME
1Strainer Cap
2Strainer
3 Stud & Nut
4Impeller Lock Nut
5Washer
6Casing
7 Parallel Key
8 Oil Seal
9 Front Cover
10 Base Plate
11 Hex. Head Bolt
12 Stator Stack
13 Hex. Head Bolt & Washer
14 Rotor With Shaft
15 Rotor Balancing Collar
No. PART NAME
16 Hex. Socket Set Screw
17 Bush
18 Rear Cover
19 Thrust Pad
20 Thrust Collar
21 Lock Nut
22 C.H Screw
23 End Cover
24 Counter Thrust Ring
25 Cable Gland Bush
26 Cable Gland
27 PVC Insulated Cable
28 Coil
29 Eye Bolt
30 Cap
1 2 3 4 6 10 12 13
44 43 42 41 40 39 38 37 3435 33 32 31 30
9
29
14 15 1611 17 18 19 205 21 22
27 26 25 24 23
8
36 28
7
No. PART NAME
31 Hex. Socket Set Screw
32 Motor Body
33 O-Ring
34 Sleeve
35 Drain Plug
36 O-Ring
37 Gasket-Circular
38 Seal Housing
39 Impeller
40 Flange Square
41 Gasket-Square
42 Nipple
43 Strainer Bracket
44 CSK Screw
OMOW001A 92020.01

Cross-section view of TSM ZR / TSM ZRC Series Openwell Submersible Monoblock is shown below in Fig. 3:
Fig. 3 Cross-section view of openwell submersible monoblock TSM ZR / ZRC
No. PART NAME
1Strainer Cap
2Strainer
3 Stud & Nut
4 Hex. Dome Nut
5Washer
6 Parallel Key
7Casing
8Sand Guard
9 Oil Seal
10 Front Cover
11 Base Plate
12 Bush
13 Thrust Pad Holder
14 Rotor Balancing Collar
15 Hex. Head Bolt & Washer
16 Rotor With Shaft
No. PART NAME
17 Stator Stack
18 Hex. Head Bolt
19 Hex. Socket Set Screw
20 Thrust Bush
21 Rear Cover
22 Rear Cap
23 PVC Insulated Cable
24 C.H Screw
25 Cable Gland
26 Cable Gland Bush
27 Eye Bolt
28 CT & BG Collar
29 Coil
30 Motor Body
31 Cap
32 Hex. Socket Set Screw
No. PART NAME
33 Thrust Collar
34 Thrust Pad
35 Gasket - Circular
36 Csk Head Hex.socket Screw
37 O-Ring
38 Drain Plug
39 Gasket - Circular
40 Gasket-Square
41 Impeller
42 Flange Square
43 Nipple
44 Strainer Bracket
45 CSK Screw
23 1 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
24
25 2326
27
28293031323334353637383940
4142
43
44
45
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9. Pre-installation requirements
Arrangement for Installation
General Installation Precautions
Open the packaging and note down the serial number and model for future reference
Ensure all fasteners are tightened properly
Use prescribed pipe sizes as mentioned on the product name plate
To prevent the motor from getting exposed during pumping, ensure the suction strainer is fitted
above the level of the motor. This is done by fitting one end of a bend to the pump suction flange
and the strainer to the other end of the bend, thereby ensuring that the level does not fall below
the strainer
Use a Check valve fitted on the delivery line when the Openwell Submersibles has high
delivery heads
Use a power cable, without joints, from the Openwell Submersibles to the starter. It is not
recommended to use a power cable with large number of joints as this can result in a significant
voltage drop
Check the level of silt at the bottom of the well. De-silt if necessary
Check the availability of three phase power
Ensure availability of a starter with inbuilt single phase preventer, overload protection and high
voltage and low voltage protection
Fill the motor with water pure drinking water before installation
In case of rapid rise of water levels during the rainy season, provide a throttle valve in the
delivery pipe line
While installing the Openwell Submersibles , ensure the Openwell Submersibles is not subject to
shock loads which can damage the Openwell Submersibles parts
Use the services of a professional and trained mechanic with experience in erecting Openwell
Submersibles
Ensure proper safety during installation
Ensure that the bottom of the well / water source is fairly level before erection of the Openwell
Submersibles
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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 flammable liquids.
Pumping flammable liquids could cause explosion
Caution
Use the eye bolt for lifting/lowering the Openwell Submersibles . Ensure
suitable precautions are taken while lifting and lowering the product
Caution
Use trained professionals to install the Openwell Submersibles
Warning
Use a power supply cable that has sufficient rating. Factor in low voltage
operation
Warning
Provide proper earthing. Improper earthing can cause electrical shock
Caution
Use a megger to verify the insulation resistance of the motor. Insulation
resistance should be 20MΩ minimum
Caution
Do not run the Openwell Submersibles dry as it contains water lubricated
bearings and oil seals
Warning
Mount the pump with its axis horizontal
Note
It is recommended to use a starter
OMOW001A 12 2020.01

Warning
Switch OFF the power before working on electrical lines
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
Caution
The Openwell Submersibles has water lubricated journal and thrust bearings
and therefore shall not be run dry. Starting of the Openwell Submersibles
without water must be strictly avoided as it will cause damage to the
bearings. Fill with pure drinking water
Note
During monsoons, the pump will run with higher flooded suction resulting in
the pump running with higher discharge. This results in increase in the current
drawn being higher than that specified on the name plate. Fit a gate valve in
the delivery line to throttle the discharge till the current is lower than that
specified on the name plate
Caution
Ensure proper direction of rotation of the pump on powering up.
Operation Precautions
Note
Check the bottom of the well. In case there is mud accumulated at the well
bottom, de-silt the well
Note
Periodically de-silt the bottom of the well so that the Openwell Submersibles
rests on the rocky bottom
OMOW001A 13 2020.01

Caution
The supply voltage should be within the specified voltage range.
Water temperature for operation of the pump should not exceed 330C
Failure to observe the precautions given above could cause the pump to
malfunction and may lead to current leakage or electrical shock.
Warning
If you find any abnormalities like vibration, noise, smell, etc. from the pump
during trial operation, switch OFF the pump and contact the dealer where this
pump was purchased.
10. Installation procedure
Please follow the below procedure to install the openwell submersible monoblock.
The following steps are executed prior to installation
Installation
Open the filling plugs and top up, if necessary, the motor with pure drinking water
Measure the insulation resistance using a megger of 500 VDC
Ensure contact points are clean
Check the direction of rotation
Connect the 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
Use prescribed pipe sizes as mentioned on the product name plate
Refer Fig. 4, shown below, for locating the OWS for operation with flooded suction.
OMOW001A 14 2020.01

The Brass Plug 3 mounted on the bottom of the motor,
is used for draining the water from within the motor.
Ensure all three brass plugs are tightened to prevent
leakage of water from within the motor. Check for
leakages before lowering the Openwell Submersibles.
Fig. 5 Filling the motor Of OWS with pure
drinking Water
Prior to installation, unscrew the Brass Plugs 1 and 2,
fitted on top of the motor as shown in Fig. 4 below,
and fill the motor with pure drinking water till water
overflows from the other filling hole. Gently rock the
motor to release air bubbles and further top up if
necessary. Then replace the two plugs.
Fig. 4 Openwell Submersible with Flooded Suction
DELIVERY
PIPE
MIN WATER
LEVEL
WELL
POWER
CABLE
2
3
1
Refer the sequence shown in Fig. 6 below for insulating the cable joint for under water 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.
DOL Openwell Submersibles motors are supplied with a single 3 core PVC insulated flat cable of
length 3 meters
The free end of the 3 core cable of the motor needs to be connected to the supply cable from
the starter
As this joint is always nearly submerged in water, the joint needs to be water proof
Waterproofing the Submersible motor cable - supply cable Joint
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Procedure for joining and insulating
the 3 core conductors:
Procedure 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
Star-Delta models are provided with two separate 3-core PVC-insulated flat cables, each
3 metres long
Repeat the procedure for both 3-core PVC flat cables from the motor to the two cables from
the starter
Fig. 5 Cable Joint for Under Water Application
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Cable Terminal
Red U
Yellow V
Blue W
Direct online starter
Cable 2 Terminal
Red U2
Yellow V2
Blue W2
Star delta starter
Cable 1 Terminal
Red U1
Yellow V1
Blue W1
Cable lead wire connection to starter
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Notes:
• Table shows maximum allowable length of submersible cable for the given full load current
where site voltage is normal ie 415 V
• For other voltages, the cable size is to be selected for the length which is calculated as follows.
• Calculated length = (415 / Actual voltage) x Actual length
• 7.5 HP and above are SD motors. For these motors, the actual current is 1/√3 the FL current
• The cable size and maximum allowable length are arrived at accordingly
Submersible Cable Selection Chart (For 415 V, 50 Hz Ac power supply)
FL
Current
(Amps)
Motor Rating Cable size in Sq.mm
1.5 2.5 4.0 6.0 10.0 16.0 25.0 35.0 50.0
KW HP Maximum Length of Cable in Metres
2.75 0.75 1 262 437 705
3.25 1.1 1.5 222 370 596 895
4.5 1.5 2160 267 430 646
6.5 2.2 3111 185 298 447 773
8.5 3 4 84 141 228 342 590 933
10 3.7 572 120 193 290 502 793
12 4.5 660 100 161 242 426 661
14.5 5.5 7.5 DOL 82 133 200 346 547
14.5 5.5 7.5 SD 86 143 231 347 600 947
18 6.7 989 115 186 279 483 763
19.5 7.5 10 69 106 172 258 446 704
25 9.3 12.5 64 83 134 201 348 549 852
29 11 15 71 155 173 300 473 735
34 13 17.5 98 148 256 404 626 822
39 15 20 87 129 223 352 546 769
43 18.5 25 78 117 202 319 495 697
52 22.5 30 96 167 264 409 577 828
60 26 35 145 229 355 500 717
65 30 40 133 211 327 461 662
The pumpset is provided with a 3m long 3-core PVC-insulated flat cable emerging from the motor, one cable
for DOL versions and two cables for SD versions. Refer TABLE 2 for the selection of cables from starter to
Submersible Motor:
Cable Selection
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Checking direction of rotation of Openwell Submersible
Danger
Hazardous voltage will cause death, serious injury, electrocution.
All electrical work must be performed by an authorized electrician, in
compliance with local electrical equipment standards and internal
wiring codes.
Connect the Openwell Submersibles to the starter, power up the Openwell Submersibles and
observe the discharge from the pump
Next interchange any two phase wires, power up the Openwell Submersibles and observe the
discharge from the pump
In case the discharge is more after interchanging any two phase wires, then the impeller is
rotating in the correct direction within the volute casing
If the discharge after interchanging any two phase wires is lower, then the previous phase wire
connection was correct. Now revert back to the old phase wire connection
Electrical Installation
Check the power supply voltage and frequency and compare with the product requirements
specified on the name plate
Observe relevant EB regulations while giving power supply to the motor
As far as possible, do not use multiple joints in the electrical cabling while connecting the starter
to the Openwell Submersibles
Ground the Openwell Submersibles using the two earth screws provided on the leg of the
motor body
Ensure electrical joints, if any, are properly and adequately insulated
Connect the cable properly to the starter terminals to avoid loose connections
Factor in low voltage operation while selecting cable size
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Electrical Installation
Earthing
Warning
All electrical work must be performed by an authorised electrician in compliance with
local electrical equipment standards and internal wiring codes. Improper wiring can
lead to current leakage, electrical shock, or fire
Warning
Be sure to install the ground wire securely. Failure to observe this precaution could
damage the pump and cause current leakage, which may lead to electrical shock
Caution
Do not connect the ground wire to a gas pipe, water pipe, lightning rod, or telephone
ground wire. Improper grounding could cause electrical shock
Connecting the power supply
Caution
Observe relevant electricity board regulations while powering up the pump set
Warning
Before inserting the power plug or connecting the wires to the terminal board, make
sure the power supply is properly disconnected. Failure to do so may lead to electrical
shock, short, or injury caused by the unintended starting of the pump.
Caution
Do not use damaged cables, power plugs, or loose power outlets. Failure to observe
this precaution could lead to electrical shock, short circuit or fire.
OMOW001A 20 2020.01