Texmo Industries Taro Pumps TSSM Series Parts list manual

Single Phase
Openwell
Submersible
Monoblocks
Instruction &
Operating Manual
OMOW002A 2020.01

OMOW002A 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
OMOW002A 32020.01

4. Contents of the
packing box
Based on the model you have purchased, your Single
Phase Openwell 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 thoroughly so as to ensure that the product 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: Specification
IS 9283: Motors for Submersible Pumpsets: Specification
IS13730: Specifications for Particular Types of
Winding Wires
IS 14220: Open well Submersible Pumpsets : Specification
OMOW002A 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 results 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.
Single phase monoblock There are three series of Single
Phase Openwell Submersibles:
TSSM
SSM
SVSM
The TSSM and SSM Series are operated horizontally.
However, the SVSM series can be operated vertically
inside a 6-inch borewell as well as horizontally in
a sump / tank by provision of two suitable clamps
supplied along with the product.
Texmo Single Phase Openwell Submersible Monoblocks
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. These are
compact pumping systems 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 therefore quick and easy. They do not
require frequent maintenance as the packing rope
and grease-lubricated deep groove ball bearings are
replaced by oilseals and water-lubricated journal
bearings respectively. Such products find application
for 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 thoroughly and
follow the instructions for installation and maintenance
of our Single Phase Openwell Submersible Monoblock to
ensure reliable operation. The product 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 / or
equipment failure.
OMOW002A 52020.01

6. Schematic drawing
View of an Single Phase Openwell Submersible Monoblock is shown below in Fig. 1:
Fig. 1 View of Single Phase Openwell Submersible Monoblock
OMOW002A 62020.01

7. Key specifications & features
Standard Specifications of Single Phase Openwell Submersible are shown below in TABLE 1:
Power
SVSM: 1.0, 1.5 HP
SSM: 1 - 5 HP
TSSM: 0.5, 1.0 HP
Phase 1
Motor Type Squirrel-cage Induction Motor – Wet type
Operating Voltage 180 - 240 V
Frequency 50 Hz
Speed 2850 rpm
Duty S1 Continuous
Max. Fluid Temperature 330C
Impeller Type Radial
Key features
Wide voltage band operation
The motor houses water-lubricated journal bearings to take up the radial loads
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 Single Phase Openwell Submersible is switched OFF
The rotors are dynamically balanced
Adequate motor surface area is provided for effective cooling
OMOW002A 72020.01

The water-filled motor is provided with single-lip oilseals 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 TSSM and SSM series products have a single impeller rotating within a volute casing
The SVSM series is a multi-stage pump with NORYL impellers rotating inside a NORYL
diffuser housing
The impeller of TSSM and SSM are dynamically balanced. Impellers of SVSM are plastic injection
molded and hence do not need to be dynamically balanced
The delivery pipe engages with the mating thread provided on the delivery chamber of the SVSM
Strainer assembly, fitted on the pump suction flange of TSSM and SSM products, prevents the
entrance of large size debris into the pump. For SVSM products, a strainer is wrapped around the
suction chamber, prevents debris from entering the pump
Standard products are supplied with a 3-m long 3-core PVC-insulated flat cable
On demand, 10-m long cable can also be supplied with TSSM models
Control panel is offered with some of our products
For products supplied without a control panel, the customer shall ensure appropriate capacitors
are used (CSCR)
Electrical connection
OMOW002A 82020.01

8. Cross-section view
Cross-section view of TSSM Series Openwell Submersible Monoblock is shown below in Fig. 2:
Fig. 2 Cross-section view of single phase openwell submersible monoblock “TSSM” series
No. PART NAME
1 Flange Oval
2 Lock Nut
3Casing
4 Parallel Key
5 Hex Nut
6 Oil Seal
7Bush
8Thrust Collar
9 Rotor With Shaft
10 Stud
11 Thrust Pad
No. PART NAME
12 Csk Head Hex Socket Set
Screw
13 Support - Rear Cover
14 Rear Cover
15 Diaphragm
16 Diaphragm Cap
17 Hexagon Head Bolt
18 Pvc Insulated Cable
19 Cable Gland
20 Cable Gland Bush
21 Stator Housing Shell
No. PART NAME
22 Stator Stack
23 Coil
24 Eye Bolt (Collapsable Ring)
& Washer
25 Front Cover
26 O-Ring
27 Impeller
28 Gasket Oval
29 Plug
30 Bend
31 Strainer
21 45678 9 10 11 12 14
16
17
181920
15
2122
23
24
2526
27
3
2829
13
31 30
OMOW002A 92020.01

Cross-section view of a SSM Series Single Phase Openwell Submersible Monoblock is shown below in Fig. 3:
Fig. 3 Cross-section view of single phase openwell submersible monoblock “SSM” series
No. PART NAME
1Strainer Cap
2Strainer
3Nipple
4 Stud & Nut
5Hexagon Dome Nut
6 Parallel Key
7Casing
8Sand Guard
9 Oil Seal
10 Front Cover
11 Bush
12 Thrust Pad
13 Hex. Head Bolt
14 Rotor With Shaft
No. PART NAME
15 Hex. Head Bolt & Washer
16 Stator Stack
17 Hex. Head Bolt & Nut
18 Hex. Socket Set Screw
19 CT & BG Collar
20 Base Plate
21 Thrust Bush
22 Rear Cover
23 Cable Gland
24 PVC Insulated Cable
25 Cable Gland Bush
26 C.H Screw
27 Coil
28 Motor Body
No. PART NAME
29 Eye Bolt
30 Cap
31 Hex. Socket Set Screw
32 Rotor Balancing Collar
33 Thrust Collar
34 O-Ring
35 Drain Plug
36 Flange Circular
37 Gasket Circular
38 Impeller
39 Gasket Circular
40 Strainer Bracket
41 CSK Screw
123 4 6 10 12 13
915 16
11 17 18 19 20
521 22
8
714
41 40 39 38 37 36 35 3233 31 29 27 26 25 24 2334 2830
OMOW002A 10 2020.01

Cross-section view of a SVSM Series Single Phase Vertical Openwell Submersible Monoblock is shown below
in Fig. 4:
Fig. 4 Cross-section of a single phase vertical openwell submersible monoblock “SVSM” series
No. PART NAME
1Hex Socket Head Cap
Screw
2Motor Base
3Wdg Over Hang Protector
4Carbon Bush
5Thrust Pad
6Thrust Collar
7 Body With Stator
8Sand Guard
9Strainer
10 Suction Chamber
11 Earth Screw
No. PART NAME
12 Washer
13 Cable Gland
14 Stud
15 Sleeve
16 Lock Pin
17 Bush
18 Cable Clamp
19 Cable Protector
20 Cable
21 Delivery Chamber
22 Hexagonal Nut
23 Lock Nut
No. PART NAME
24 Intermediate Housing
25 Pump Housing Shell
26 Diffuser Housing
27 Impeller
28 Pump Shaft
29 Coupling
30 Drain Plug With Washer
31 Oil Seal
32 Tie Bar
33 Rotor With Shaft
34 Parallel Key
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20 21
22
23
24
25
26
27
28
29
30
31
32
33
34
OMOW002A 11 2020.01

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 nameplate
Use a check valve fitted on the delivery line when the Single Phase Openwell submersible has
high delivery heads
Use a power cable without joints from the Single Phase Openwell submersible to the control
panel. It is not recommended to use a power cable with large number of joints as this can result
in a significant voltage drop
If used in a well, check the level of silt at the bottom of the well. De-silt if necessary
Check the availability of Single Phase power
Check if the motor is completely filled with water. Top up if required with pure drinking water
It is recommended to assemble the Single Phase Openwell submersible on a fairly level base to
prevent the pump and piping from getting stressed
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
While installing the Openwell Submersible, ensure the Openwell Submersible is not subject to
shock loads which can damage the Openwell Submersible parts
Use the services of a professional and trained mechanic with experience in erecting
Openwell submersible
Ensure proper safety precautions during installation
Use the eye bolts / lifting lugs for lifting / lowering the Single Phase Openwell submersible using
appropriate equipment
OMOW002A 12 2020.01

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, acidic, corrosive, and flammable liquids.
Pumping flammable liquids could cause explosion
Caution
Use the eye bolt for lifting/lowering the Single Phase Openwell submersible.
Ensure suitable precautions are taken while lifting and lowering the product
Caution
Use trained professionals to install the Single Phase Openwell Submersible
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 Single Phase Openwell Submersible dry as it contains water-
lubricated bearings and oilseals
Warning
Mount the TSSM and SSM pumps with their axis horizontal. SVSM products can
be mounted vertically or horizontally
OMOW002A 13 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 Single Phase Openwell Submersible has water-lubricated journal and
thrust bearings and therefore shall not be run dry. Starting of the Single Phase
Openwell Submersible without water must be strictly avoided as it will cause
damage to the bearings
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
OMOW002A 14 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 from whom
this pump was purchased.
10. Installation procedure
Please follow the below procedure to install the Single Phase 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
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
Check the direction of the rotation
Use prescribed pipe sizes as mentioned on the product nameplate
Refer Fig. 5, shown below, for locating the Single Phase Openwell Submersible for operation with
flooded suction
OMOW002A 15 2020.01

SVSM products are prefilled with pure drinking water
and dispatched from the factory. TSSM and SSM
products shall be filled with pure drinking water before
installation. For SSM and TSSM products (Fig. 6a and b),
unscrew plugs 1 and 2, fitted on top of the motor and
fill up the motor with pure drinking water. For SVSM
products, in case the motor is not full, top up the motor
with pure drinking water, as illustrated below in Fig. 6c.
Gently rock the motor to release air bubbles and further
top up if necessary. Then replace the two plugs.
Fig. 6 Filling the motor of single phase openwell
submersible monoblock with pure drinking water
Prior to installation, unscrew the Brass Plugs 1 and 2,
fitted on top of the motor as shown in Fig. 5 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. 5 Single phase openwell submersible
monoblock with flooded suction
DELIVERY
PIPE
MIN WATER
LEVEL
WELL
POWER
CABLE
In case the installation has a high delivery head, mount a good quality check valve in the
delivery line.
1
2
FUNNEL JAR
12
FUNNEL JAR
JAR
FUNNEL
21
Fig. 6(b) Fig. 6(c)
Fig. 6(a)
OMOW002A 16 2020.01

Remove the screws in the clamps (a) and insert Motor Stand in the motor base flange (b) as shown in below
pictures and tight the screws (c).
Fig. 7 Assembly procedure – Motor stand
Similarly assemble the pump stand in the delivery flange as shown in pictures (d), (e) and (f) and tighten the
screws.
Fig. 8 Assembly procedure – Pump stand
Both Motor & Pump Stands should be assembled opposite to the cable side
Motor and pump stand assembly – procedure
Refer Fig. 7 and Fig. 8 for the assembling the motor stand and pump stand.
SVSM – Horizontal Mounting:
(a) (c)(b)
(d) (f)(e)
OMOW002A 17 2020.01

Refer the sequence shown in Fig. 9 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.
Standard Single Phase Openwell Submersible are supplied with a 3-core PVC-insulated flat cable
of length 3 meters. On demand a 10-m long cable can be supplied
The free end of the 3-core cable of the motor needs to be connected to the supply cable from the
control panel
As this joint is always nearly submerged in water, the joint needs to be waterproof
Waterproofing the Submersible Motor Cable - Supply Cable Joint
OMOW002A 18 2020.01

Fig. 9 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
OMOW002A 19 2020.01

Cable Terminal
Red R
Yellow Y
Blue B
Cable Lead Wire Connection to Control Panel
Submersible Cable Selection Chart (For 220 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
4.5 0.37 0.5 160 267 430 646
5.4 0.55 0.75 133 222 359 538
60.75 1120 200 323 484 837
9.5 1.1 1.5 75 126 204 306 529 835
13 1.5 255 92 149 223 386 610 946
20 2.2 360 96 145 251 396 615 866
28 3.7 569 103 179 283 439 618 888
Refer TABLE 2 for the selection of cables from Control Panel to Submersible Motor:
Cable Selection
Notes:
• Table shows maximum allowable length of submersible cable for the given full load current where site voltage
is normal ie 220 V.
• For other voltages, the cable size is to be selected for the length which is calculated as follows.
• Calculated length = (220 / Actual voltage) x Actual length
OMOW002A 20 2020.01