Teral MSU User manual

Teral Inc.
Instruction Manual
Installation Manual
Deep Well Submersible Pump
Model MSU/MSUS
Thank you for your purchase of the Deep Well Submersible
Pump.
To the customers
Instruct the dealer (installation contractor) to install the
pump.
Thoroughly read this manual to properly use the pump.
Keep this manual carefully after use, and read it when
needed.
Note that we are not liable for any product failures or
accidents caused by improper use.
To the dealers (installation contractor)
Properly install the pump according to the installation
manual.
After the completion of installation, be sure to submit this
manual to the customer.
Note that we are not liable for any product failures or
accidents caused by improper installation or improper use.
Contents Instruction Manual for the customer
Safety precautions............................................ 1
Instructions for proper use.................................2
Name and function of each part ........................3
Troubleshooting.................................................3
After-sales service .............................................3
Standard specifications .....................................4
Installation manual for the dealer (installation
contractor)
Safety precautions............................................ 6
Installed pump system and names....................8
Instructions for installation.................................9
Control panel ...................................................11
Wiring work......................................................11
Anti-freeze measures ......................................12
Commissioning ................................................13
Use of the closed expansion tank ...................13
Appropriate operating range of the pump........14
Minimum operating head .................................15

1
Instruction Manual [for the customer]
Safety precautions Be sure to observe the following.
The following symbols and labels indicate the instructions that the user must observe in order to prevent
personal injury and property damage.
 Levels of possible injuries and damage due to improper use in defiance of the instructions are
classified by the following symbols and labels.
WARNING indicates that incorrect handling may lead to death or severe injury.
CAUTION indicates that incorrect handling may lead to injuries or property damage.
 The following symbols indicate the types of instructions to be observed. (The following are only part of
all symbols.)
This symbol indicates "prohibited" actions that you must NOT do.
This symbol indicates "mandatory" actions that you must do.
WARNING
Never disassemble, repair, or modify the product. Do not operate the control panel or ground fault
interrupter with wet hands.
Do not
disassemble
It may lead to ignition or malfunction, thus causing
injuries.
ƔFor repairs, contact the dealer (installation
contractor). Don’ts
An electric shock may occur.
Do not damage the submersible cables, apply an
excessive force to them, or tie them in a bundle.
If the underwater cables or above-ground wires are
damaged, do not use the product.
Don’ts
A fire or electric shock may occur.
Don’ts
A fire or electric shock may occur.
ƔInstruct the dealer (installation contractor) to
repair them.
Do not put anything heavy on submersible cables or the above-ground wires, pinch them, or modify them.
Don’ts
It may damage the submersible cables or above-ground wires, thus causing a fire or electric shock.
Do not use the product while the door of the control
panel is open. Do not put anything inside the control panel.
Don’ts
It may cause rainwater or dust to enter the control
panel. As a result, insulation degradation or other
problems may occur, thus resulting in an electric
shock or fire. Don’ts
It may cause overheating, thus resulting in ignition
and fire.
Do not perform zero discharge operation for over 10
minutes. Do not run the product in mud.
Don’ts
It may lead to hot water, thus resulting in an
electric shock, injury, or accident.
Don’ts
An electric shock or accident may occur.
Do not fix the position of the reset button of the motor protective relay with tape etc.
Don’ts
It may overheat the motor or the wires in the event of a failure, thus resulting in ignition and a fire.
ƔIf the motor protective relay is tripped, contact the dealer (installation contractor).
Be sure to turn off the power before maintenance or inspection.
An electric shock or injury may occur.

2
CAUTION
Do not open the door of the control panel. Never run the pump dry (when it is not submerged in
water).
Don’ts
An electric shock or accident may occur.
ƔIf the product is not working properly,
immediately turn off the power and contact the
dealer (installation contractor). Don’ts
A fire, electric shock, or accident may occur.
ƔIf water does not flow out, immediately turn off
the power and contact the dealer (installation
contractor).
If you do not use the product for a long time, be sure
to turn off the power.
If the product does not work or if there is anything
wrong with it, immediately turn off the power.
It may cause an electric shock through insulation
degradation or a fire through electric leak.
It may cause an electric shock, or electric leak or
short circuit, thus resulting in a fire.
ƔFor repairs or inspection, be sure to instruct the
dealer (installation contractor) from which you
purchased the product.
Instructions for proper use
 Once adjusting the water discharge rate, do not open or close the sluice valve.
ƔExcessively opening the valve may make water cloudy or get sand mixed into water.
 If the product is used in a well that contains a large amount of sand in the water, the discharge rate
decreases rapidly due to wear of the impeller or clogging with sand.
ƔContact the dealer (installation contractor).
 Pay attention to the needle of the ammeter.
ƔIf the deflection of the meter needle is large or the current exceeds the rated value, contact the dealer (installation contractor).
 Close the cock of the compound pressure gauge.
ƔKeeping the cock open may damage the compound pressure gauge by a shock during startup or stop.
 If no water has been pumped out for over 3 or 4 days, open the water tap to run water for a while
before use.
ƔIn such a case, the lifting pipe and the above-ground pipe may contain cloudy water inside.
 Even if you do not plan to use the pump for a long time, run it periodically (once a month or so).
 For maintenance and safety, it is recommended to inspect the insulation resistance and operating
conditions (electric current, vibration, discharge rate, etc.) periodically (once a month or so).
ƔContact the dealer (installation contractor).
Be sure to confirm the following installation points from the dealer (installation
contractor).
If the product is for indoor use, confirm that
measures are taken against water leakage.
ƔIf water flows out during repairs or inspection or in the event of
a failure, it may drench surrounding areas and downstairs
areas, thus resulting in serious compensation issues.
Confirm that the product is securely grounded
and that the dedicated ground fault interrupter
is installed.
ƔAn electric shock may occur in the event of a failure or electric
leak. (You are required by law to connect a ground wire.)
Check that no ground wire is connected to a
gas pipe or water pipe.
ƔAn explosion or electric shock may occur.
Check that measures are taken against freezing
of the above-ground section and the pipe.
ƔEven in a warm region, an unexpected cold wave may freeze
and damage the above-ground section and piping in winter.

3
Name and function of each part
ŶRefer to page 7 for the installed system of the pump and the above-ground section.
ŶRefer to the separate Instruction Manuals for the control panel and the above-ground
units.
Troubleshooting
If there is a problem, carry out troubleshooting according to the following table. If the problem still persists,
contact the dealer (installation contractor).

Problem Possible Cause Action
No rotation of motor
(The motor does not run.)
ƔThe power (ground fault interrupter)
is turned off.
ƔThe selector switch of the control
panel is turned off.
ƔTurn on the power (ground fault
interrupter).
The motor is running, but
no water flows out, or the
discharge rate is low.
ƔThe sluice valve of the
above-ground section or a valve
installed in the pipe is closed.
ƔOpen the sluice valve and the valve
in the pipe.
Instructions
If the light comes on at any (orange or red) alarm indicator of the motor protective relay, such as the
overcurrent indicator, open-phase indicator, inching indicator, or water shortage indicator, be sure to
instruct the dealer (installation contractor) for inspection.
After-sales service
For repairs, handling, maintenance, and other work for the product, contact the dealer from which
you purchased the product.
ƔBefore instructing the dealer to repair the product, check the items shown in the "Troubleshooting" on
this page. If the problem still persists, first turn off the power and the ground fault interrupter, and then
contact the dealer (installation contractor) from which you purchased the product.

4
Standard specifications
Applicable well diameter (mm) 75(3B) 100 (4B) or more 125 (5B) or more 150 (6B) or more
Applicable model 25MSU3 25MSUS4-_ _ _ _S
25MSUS4
32MSUS4
40MSUS4
40MSU5 40MSU6
50MSUS6
65MSUS6
80MSUS6
Liquid quality Fresh water
Allowable liquid
temperature 10 to 25°C 40°C (Minimum flow rate through the motor: 4.5 m/min) 10 to 40°C 10 to 30°C
pH 5.8 to 8.6
Chlorine content 200 mg /L or less
Liquid to be pumped
Contained sand
quantity 50 mg/L (Size: 0.1 to 0.25mm) or less
Maximum depth allowed for
pump submersion (m) M3 canned: 50 m M4 canned: 70 m M4 canned 0.6 to 2.2 kW: 70 m
M4 canned 2.7 to 3.7 kW: 210 m M4 canned: 100 m M6 canned: 350 m
M4 canned 1.5 to 2.2 kW: 70 m
M4 canned 2.7 to 3.7 kW: 210 m
M6 canned 3.7 to 15 kW: 350 m
Minimum depth required for
pump submersion (m) 1m 0.5m 0.5m 0.5m 1.0m
Minimum inside diameter of
well (mm) 75 m (VP available) 100mm 125 (VP available) 146 (VP available)
Maximum outside diameter of
pump (mm) 74 97 142 140 142
Bore (mm) 25 25 25 to 50 40 40 50 to 80
Range
Motor output (kW) 0.4 and 0.75 0.45 and 0.6 0.6 to 3.7 1.5 to 3.7 5.5 to 7.5 2.2 to 15
Sectional case common
fastening (Bore: 50 and 65)
Type Sectional case common fastening Multistage bowl type common
fastening (Bore: 80)
Structure
Impeller Closed impeller
Casing FC200/CAC406 SUS304 FC200 SCS13
Impeller CAC406 SUS304 SUS304 SCS13
Shaft SUS420 SUS304 SUS403
Pump
Material
Well lid FC200 SS400
Type M3: canned type 0.4 kW
and 0.75 kW M4: canned type M4: canned type M4: canned type M4: canned type M4: canned type 1.5 to 3.7 kW
M6: canned type 3.7 to 15 kW
Number of poles, phase,
voltage 2-pole, 3-phase 200V 2-pole, single-phase 100V 2-pole, 3-phase 200V
Starter type Direct on line starting 7.5kW or less: Direct on line starting
11kW or more: Star-delta starting
Insulation type Class E (canned type) Class E (canned type) Class E
(canned type)
M6: Class F
(canned type)
M4: Class E (canned type)
M6: Class F (canned type)
Frame SUS304 SUS301 SUS304
M4: SUS301
M6: SUS304
Bracket FC200 Cast iron/SUS304 FC200 SCS13/SUS304
M4: Cast iron/SUS304
M6: SCS13/SUS304
Shaft SUS420 SUS630 SUS403 SUS630 SUS630
Submersible motor
Material
Lead wire EP rubber insulated
neoprene cabtyre cable EP rubber insulated neoprene cable
Cross-linked
polyethylene
insulated vinyl
cabtyre cable
Heat resisting EP
rubber insulated
chlorosulfonated
polyester rubber
cabtyre cable
M4 EP rubber insulated
neoprene cabtyre cable
M6 Heat resisting EP rubber
insulated chlorosulfonated
polyester rubber cabtyre
cable
Pump body Thread type Thread type or flange type
Pipe joint
Discharge bend
(above-ground side) Flange type

5
Applicable well diameter (mm) 200 (8B) or more 250 (10B) or more 300 (12B) or more 350 (14B) or more 400 (16B) or more
Applicable model 80MSU8
100MSU8 100MSU8-_ _ _ _B 80MSUS8
100MSUS8 125MSU10 150MSU12 200MSU14 250MSU16
Liquid quality Fresh water
Allowable liquid
temperature 10 to 25°C 10 to 30°C 10 to 25°C
pH 5.8 to 8.6
Chlorine content 200 mg /L or less
Liquid to be pumped
Contained sand
quantity 50 mg/L (Size: 0.1 to 0.25mm) or less
Maximum depth allowed for
pump submersion (m)
M6 canned 3.7 to 18.5
kW: 350 m
Waterproof insulation
type: 100 m
M6 canned 3.7 to 18.5
kW: 350 m
M8 canned 22 to 37
kW: 150 m
Waterproof insulation
type: 100 m
M6 canned 3.7 to 18.5
kW: 350 m
M8 canned 22 to 37
kW: 150 m
M6 canned 3.7 to 18.5 kW: 350 m
Waterproof insulation type: 100 m Waterproof insulation type: 100 m
Minimum depth required for
pump submersion (m) 1.5m 2.5m 3.5m 5.5m 7.5m
Minimum inside diameter of
well (mm) 205 205 205 254.2 304.7 339.8 390.6
Maximum outside diameter of
pump (mm) 194 189 194 245 288 322 387
Bore (mm) 80 and 100 100 80 and 100 125 150 200 250
Range
Motor output (kW) 3.7 to 37 7.5 to 37 3.7 to 37 7.5 to 55 11 to 75 30 to 75 22 to 75
Multistage bowl type
Type Sectional case
common fastening
(810A)
Structure
Impeller Closed impeller
Casing FC200 SCS13 FC200
Impeller CAC502A CAC406 SCS13 CAC502A
Shaft SUS403 SUS420
SUS420J2(Bore 80)
SUS403 (Bore 100) SUS403
Pump
Material
Well lid FC200 SS400
Type
M6: canned type 3.7
to 18.5 kW
M8: waterproof
insulation type 22 to
37 kW
M6: canned type 3.7
to 18.5 kW
M8: waterproof
insulation type 26 to
37 kW
M9: waterproof
insulation type 22 kW
M6: canned type 3.7
to 18.5 kW
M8: canned type 22 to
37 kW
M6: canned type 7.5
to 18.5 kW
M8: waterproof
insulation type 22 to
37 kW
M10: waterproof
insulation type 45 to
55 kW
M6: canned type 11 to
18.5 kW
M8: waterproof
insulation type 22 to
37 kW
M12: waterproof
insulation type 45 to
75 kW
M8: waterproof
insulation type 22 to
37 kW
M12: waterproof
insulation type 45 to
75 kW
Waterproof insulation
type 22 to 75 kW
Number of poles, phase,
voltage 2-pole, 3-phase 200V 4-pole, 3-phase 200V
Starter type 7.5kW or less: Direct on line starting
11kW or more: Star-delta starting
Insulation type
M6: Class F
(canned type)
M8: Class Y
(waterproof insulation)
M6: Class E
(canned type)
M8: Class Y
(waterproof insulation)
M6: Class F (canned
type)
M8: Class F (22 kW
canned type)
M8: Class E (30 kW
and 37 kW canned
type)
M6: Class F (canned type)
M8, M10 and M12: Class Y (waterproof
insulation)
M8 and M12: Class Y
(waterproof insulation)
Class Y
(waterproof insulation)
Frame M6: SUS304
M8: SPHC
M6: SUS304
M8: SPHC M6 and M8: SUS304 M6: SUS304 M8 and M10: SPHC
M6: SUS304
M8 and M12: Casting SPHC
M6 (canned type): SCS13/SUS304
Bracket M6: SCS13/SUS304
M8: cast iron Cast iron M6 and M8: (canned type) SCS13/SUS304 M8 and M10: casting M8 and M12: casting Casting
M6: SUS630 M6: SUS630
Shaft M8: SUS403 SUS420 M8: SUS420 M8 and M10: SUS402 M8 and M10: SUS403 SUS403
Submersible motor
Material
Lead wire
M6 Heat resisting EP
rubber insulated
chlorosulfonated
polyester rubber
cabtyre cable
M8 EP rubber
insulated
chloroprene
cabtyre cable
M8 EP rubber
insulated
chloroprene
cabtyre cable
M6 Heat resisting EP rubber insulated chlorosulfonated
polyester rubber cabtyre cable
M8 or more EP rubber insulated chloroprene cabtyre cable
M6 Heat resisting EP
rubber insulated
chlorosulfonated
polyester rubber
cabtyre cable
M8 or more
EP rubber
insulated
chloroprene
cabtyre cable
Pump body Flange type
Pipe joint
Discharge bend
(above-ground side) Flange type

6
Installation manual [for the dealer (installation contractor)]
Safety precautions Be sure to observe the following.
The following symbols and labels indicate the instructions that the installation worker must observe in
order to prevent personal injury and property damage.
 Levels of possible injuries and damage due to improper use in defiance of the instructions are
classified by the following symbols and labels.
WARNING indicates that incorrect handling may lead to death or severe injury.
CAUTION indicates that incorrect handling may lead to injuries or property damage.
 The following symbols indicate the types of instructions to be observed. (The following are only part of
all symbols.)
This symbol indicates "prohibited" actions that you must NOT do.
This symbol indicates "mandatory" actions that you must do.
WARNING
Don’ts
Do not connect the ground wire to a gas
pipe or water pipe.
An explosion or electric shock may occur. Don’ts
Do not operate the control panel or ground
fault interrupter with wet hands.
An electric shock may occur.
Do not damage the submersible cables, apply an
excessive force to them, or tie them in a bundle.
Don’ts
Do not use the submersible cables for
above-ground wiring. Use them for the
connection of only up to the conduit,
terminal box, etc.
It may cause overheating, thus resulting in ignition
and fire. Don’ts
A fire or electric shock may occur.
Don’ts
Do not use the product at any voltage
other than specified.
A fire or electric shock may occur.
ƔCut off any excess of the submersible cable above the ground,
and connect the cable to the control panel or the terminal box.
Don’ts
Do not use the product for any liquid other than fresh water (salt water, oil, chemicals, etc.) or for
warm water exceeding the allowable temperature limit provided in the specifications.
An explosion, fire, electric shock, or accident may occur.
Carry out installation work safely and securely.
Carry out wiring work safely and securely in accordance
with the technical standards for electrical facilities and
the indoor wiring regulations.
Otherwise, there may be a danger; for example,
the pump falls on the worker, thus resulting in
injury. Furthermore, inadequate work may cause
water leak, electric shock, or fire.
ƔOnly specialist contractors are allowed to carry
out the installation work.
Improper wiring work may cause an electrical shock or
fire.
ƔOnly electricians are allowed to carry out the
electrical wiring work.
Be sure to install the ground fault interrupter.
An electric shock may occur in the event of a failure or electric leak. (You are required by law to install the ground fault
interrupter.)
ƔIf electric leak occurs, it turns off the power immediately.
Be sure to turn off the power before grounding work.
An electric shock may occur.
Be sure to connect a ground wire (Class D grounding).
Connect a
ground wire
An electric shock may occur in the event of a failure or electric leak. (You are required by law to connect a ground wire.)
ƔConnect a ground wire to the ground terminal of the well lid, and bury the ground rod in the ground.
ƔOnly electricians are allowed to carry out the grounding work in accordance with the technical standards for electrical
facilities.

7
CAUTION
Install the pump outdoors. If you need to install it indoors, be sure to take measures against water leakage.
ƔIf water flows out during repairs, inspection, or a failure, it may drench surrounding areas and downstairs
areas, thus resulting in serious compensation issues.
ƔProvide space around the unit for repairs and inspection. Also provide an opening in the ceiling for lifting
and installing the unit and components.
Example of measures against water leakage
ƔTo ensure to drain any spouting water, take measures such as—providing a waterproof cover and
applying waterproof mortar.
Before installing the pump, check that the sealing liquid inside the motor is full. If it is not full, add
fresh water.
Insufficient sealing liquid may cause an accident.
ƔTo fill the motor with sealing liquid, refer to page 9.
(There is no need to inject sealing liquid for motors made by Franklin Electric.)
Opening
Second floor
First floo
r
Cover
Waterproof mortar
Drain

8
Installed pump system and names

Compound
pressure gauge Check valve
Sluice valve
Air valve Companion
flange
Discharge bend Piping suppor
t
Submersible
cable
2-conductor cable for the electrode
Well lid
Operating water level
Natural water level
Cable tie
Well casing (steel pipe or PVC pipe)
Lifting pipe
Electrode
(for preventing dry running)
Pump body
Straine
r
Submersible moto
r

9
Instructions for installation
 Installation position of the pump
If the inlet port of the pump is located near the well strainer, it
sucks a large amount of sand, which not only reduces the
service life of the pump, but also causes an accident. Install the
pump above the well strainer as far away as possible. If the
pump needs to be installed between two or more well strainers,
install it slightly below the middle.
Ensure that the pump is installed at a point as far from the well
bottom as possible. During an extended period of use, the
pump may be buried under the mud and/or sand deposited at
the bottom of the well.
 Thorough cleaning of the well
Be sure to clean the well before installation. If the pump is
installed without the well being cleaned, a large amount of sand
deposits may cause an accident in a short time. Using an air
compressor, cleaning pump (with a higher suction power than
the pump to be newly installed), or other methods, thoroughly
remove sand until no fine sand is lifted.
 Operating water level
Carefully check the operating water level at the maximum
discharge rate of water. Ensure that the upper part of the pump
is below the water surface at this minimum operating water
level. Install the pump so that the inlet port of the pump is
deeper than the minimum operating water level by at least [the
minimum depth required for pump submersion].
For a well whose water level may become lower than the
minimum level during a drought period or under any other
conditions, it is recommended to install a liquid level controller.
 Injecting sealing liquid into the motor
cRemove the water filler plug, and check that the water level is full.
dIf it is insufficient, add fresh water (drinking water).
eReinstall and tighten the water filling plug.
* There is no need to inject sealing liquid for all stainless steel submersible motors (made by Franklin
Electric).
Natural water
level
Operating
water level
Minimum depth
required for pump
submersion
Straine
r
A
s far away
as possible
Well straine
r
A
s far away as
possible: at least 10m
Well
bottom
Canned type
0.75 kW to 37 kW
Waterproof insulated wire type
22 kW to 75 kW
Water filler plug
Water filler plug
Made of stainless steel
Unpainted

10
CAUTION
Don’ts
Never run the pump dry (when it is not submerged in water).
A fire, electric shock, or accident may occur.
ƔIf water does not flow out, immediately turn off the power and contact the dealer (installation
contractor).
 Submersible cable
ƔBefore and after installing the cable, be sure to measure the insulation resistance and continuity.
Although the submersible cable is shipped after strict testing and inspection along with this product,
check for any flaws and measure the insulation resistance before installation, just in case. Be
careful not to damage the submersible cables during installation, and measure the insulation
resistance and continuity again after installation. If the measured value is 10Mȍor less, contact the
vendor or our sales office.
ƔDuring installation, keep the submersible cables from contact with the well casing, and do not
damage them.
ƔSecurely fix the submersible cables to the lifting pipe with a cable tie so that there is no "slack."
Instructions
ƔBe sure to measure the insulation resistance of the submersible cables.
ƔIf the measured value is 10Mȍor less, contact the vendor or our sales office.
 Above-ground section
ƔWell lid
If the lid is not installed on a level or even surface, excessive load is applied to the long lifting pipe,
thus resulting in vibration and a failure.
CAUTION
If the closed expansion tank is used, do not attach the air valve. (Refer to page 12.)
Instructions for installation
ƔFor installation of the sluice valve, check valve, and compound pressure gauge
To adjust water volume and facilitate future inspection, be sure to install the sluice valve, check
valve, and compound pressure gauge. If the weight of the discharge section is applied to the
discharge bend at an abnormally high level, install an adequate pipe support.
Ground wire
Well lid with a bend
(Up to 8B wells)
Check
valve
Companion flange
Air valve
Compound pressure
gauge (with a cock)
Sluice valve
2-conductor cable for
the electrode
Control
panel
For wells with a diameter of 100 or 125 mm For wells with a diameter of 150 mm or lar
g
e
r
Check valve
Compound pressure
gauge
Sluice valve
Discharge
pipe
Discharge bend
Discharge
pipe
Piping suppor
t
Well lid
Ground wire 2-conductor cable for the
electrode

11
Control panel
Be sure to install the specified control panel.
WARNING
Be sure to install the control panel.
Do not install the control panel in a place with a
risk of ignition, generation of corrosive gas, or
exposure to vibrations, dust, high temperatures
(40°C or more) or high humidity (90% or more). If
the panel is of an indoor type, do not install it in a
place possibly exposed to rainwater.
It may lead to motor burnout, a fire, or
electric shock.
Don’ts
An explosion, fire, or electric shock
may occur. ƔBe sure to install it even for short-time operations.
Instructions
ƔThe most essential role of the control panel is to prevent motor burnout. The submersible motor pump
is located deep in the well, and the only way to carry out a diagnosis above the ground is through the
control panel. Therefore, a reliable control panel must be used. Be sure to use the control panel
specified by us because it was manufactured exclusively for the "submersible motor pump."
ƔWe are not liable for any failures in the pump or motor if a control panel made by other manufacturers is
used.
ƔOnly electricians are allowed to carry out the installation work.
ƔBe sure to check the power supply voltage.
ƔVertically install the control panel as close to the pump as possible or in a place where it is easy to
operate or inspect.
ƔFor details, refer to the separate Instruction Manual for the control panel.
Wiring work
 Be sure to connect a ground wire to prevent an electric shock.
ƔOnly electricians are allowed to carry out the grounding work in accordance with the technical
standards for electrical facilities (Class D grounding).
ƔConnect the ground wires to the ground terminals of the well lid and control panel, and bury the
ground rod in the ground.
 Perform wiring work safely and securely in accordance with the technical standards for
electrical facilities and the indoor wiring regulations.
ƔThe users must provide wiring materials on their own between the power supply and the control
panel as well as between the control panel and the terminal box, and perform wiring work in
accordance with the technical standards for electrical facilities and the indoor wiring regulations.
ƔThe voltage applied to the motor must be within ±10% of the rated voltage during operation.
ƔUse wires thick enough to keep a voltage drop at the terminal box within 5% of the rated voltage
during operation.
ƔIf you add any wires to the supplied submersible cable, use wires thick enough to keep a voltage
drop at the submersible cable within 5% of the rated voltage during operation.
WARNING
Don’ts
Do not install any added wires in water.
An electric shock may occur.

12
ƔKeep the voltage imbalance of each phase within ±2.5%.
ƔFor the connection of the control panel, refer to the separate Instruction Manual for the control
panel.
ƔCheck the rotation direction – normal or reverse (for three-phase motors only).
cOpen the sluice valve about a half to one turn.
dClose the cock of the compound pressure gauge.
eTurn on the switch of the control panel.
fClose the sluice valve, read the compound pressure gauge, and open the sluice valve about one
turn.
Total shutoff head (m)
|Reading of the compound pressure gauge (m) + Natural water level (m)
If both sides of the above equation are roughly equal, the motor rotates in the normal direction.
To rotate the motor in the reverse direction, change the connection according to the following diagram.
Direct on line starting Star-delta starting
Terminals at operation panel
Swap V with W.
Terminals at operation panel
Swap V1 with W1, and W2 with U2.
Instructions
ƔOnly electricians are allowed to carry out the wiring work.
ƔBe sure to check the power supply voltage.
Anti-freeze measures
(Be sure to read the following instructions even if the product is used in a warm region.)
Even in a warm region, an unexpected cold wave may freeze and damage the above-ground piping in
winter. Therefore, be sure to take the following measures against freezing.
Heat insulation with heat insulating materials
ƔWrap felt or other material around the following above-ground section to keep them warm:
discharge bend, check valve, sluice valve, and the exposed area of piping.
Bury any horizontal piping in the ground. (Determine the depth of piping to be buried depending on the
temperature and the nature of the soil in the region.)
ƔIn a region where the outside air is especially cold, construct a concrete pit or shed, and wrap a heat
insulating material around the exposed areas of the above-ground section and piping. If a concrete pit
has been constructed, provide a heat insulating material to the inside of the pit.
Instructions
ƔFor the pits and shed, provide space to allow for repairs, inspection, and lifting. In addition, construct
them to allow for draining.
To main
switch To moto
r
To power
supply
3-phase 200V
To moto
r

13
Commissioning
WARNING CAUTION
Maintain the minimum operating head
when running the product.
An accident may occur.
Don’ts
Do not run the product if the insulation
resistance between the control panel
and the submersible motor is not
higher than 1 Mȍ.
A fire or electric shock may occur. ƔRefer to the minimum operating head on page 14.
cOpen the sluice valve a half to one turn.
dClose the cock of the compound pressure gauge.
eTurn on the switch of the control panel.
fWhen water flows out, close the sluice valve, open the cock of the compound pressure gauge, determine whether
the rotation direction is normal or reverse, and ensure that the motor rotates in the normal direction. (To determine
the rotation direction, refer to "Check the rotation direction -- normal or reverse" on page 11.)
gWith the sluice valve opened a half to one turn, keep running the pump until muddy water becomes clear without
any sand.
hWhen water becomes clear without any mixture of sand, gradually open and adjust the sluice valve—while
observing the pumping condition—until the water discharge rate reaches the specified value.
Instructions
ƔDo not open the sluice valve in one go.
If the pump discharges a large amount of water from the start, it may also suck up a large amount of sand,
thus resulting in a failure.
ƔPay attention to the needle of the ammeter.
The deflection of the meter needle indicates sand being sucked up. Therefore, decrease the opening of the
sluice valve to reduce the discharge rate.
Use of the closed expansion tank
The closed expansion tank was designed to separate the air room from the immersion room.
Since there is no contact surface between water and air, the tank can always deliver clean water.
Use of the closed expansion tank controlled by a pressure switch
may make water in the piping milky due to entrapped air, and it may
also cause the pump to start and stop frequently. Therefore, be sure
to take the following measures.
ƔDo not attach the air valve. Air may accumulate in the closed
expansion tank due to the mixing of air, and water in the piping may
become cloudy.
ƔBe sure to install the check valve and sluice valve.
ƔFor the submersible pump, be sure to use a valve element with "no
hole."
ƔDo not remove the air supply valve cap of the closed expansion tank
or touch the air supply valve.
Escaping of gas from the tank may cause the pump to start and stop frequently, thus resulting in an accident.
Instructions
ƔIf the pump discharges no water from the faucet or it starts and stops frequently, contact the vendor or our
sales office.
Valve element with a hole
Water drains out of the
lifting pipe.
Valve element with no hole
Water does not drain out
of the lifting pipe
Air supply valve cap
Pressure switch Closed
expansion
tank
Sluice valve
Check valve

14
Appropriate operating range of the pump
Ensure that the discharge rate of the pump meets the specifications (refer to the commercial drawing.)
If the discharge rate is too low, the motor may overheat and burn out.
If you use the product for a well with a diameter larger than the applicable well diameter, ensure to run the
pump at the following minimum flow rate or more.
However, the following minimum flow rate is not applicable to MSU3, MSUS4, MSU5, or MSU14.
ƔMinimum flow rate (m3/min)
Well diameter
Pump
150
6B
200
8B
250
10B
300
12B
350
14B
MSUS6 0.165m3/min 0.200m3/min 0.350m3/min
MSU8
MSUS8 0.200m3/min 0.350m3/min 0.550m3/min
MSU10 0.350m3/min 0.550m3/min
MSU12 0.550m3/min
Note 1: Applicable well diameter

15
Minimum operating head
ƔUse the Deep Well Submersible Pump within the allowable operating range. Using the pump outside
the operating range may cause malfunction and an accident.
Particularly when running the pump with a low head, maintain the following minimum operating head.
(The operating water level plus the compound pressure gauge pressure of the above-ground section
must be equal to or larger than the following minimum operating head.)
50Hz 60Hz
Applicable
well diameter
(mm)
Diameter
(mm) Model Minimum operating
head (m) Model Minimum operating head (m)
25MSUS4-5.6-11 6.5 25MSUS-6.6-7 6
25MSUS4-5.75-13 7.5 25MSUS4-6.75-8 6.5
25MSUS4-51.1-19 11 25MSUS-61.1-11 9.5
25MSUS4-51.5-26 15 25MSUS-61.5-16 13
25MSUS4-52.2-38 19 25MSUS4-62.2-22 15.5
25
25MSUS4-52.2-44 22 25MSUS-62.2-26 18.5
32MSUS-5.75-10 5 32MSUS-67.5-6 6
32MSUS-51.1-15 7.5 32MSUS-61.1-9 9
32MSUS-51.5-13 6.5 32MSUS-61.5-12 12
32MSUS-51.5-15 7.5 ––
32MSUS-51.5-18 9 ––
32MSUS-51.5-20 10 ––
32MSUS-52.2-30 15 32MSUS-62.2-18 18
32MSUS-53.7-36 18 32MSUS4-62.7-22 22
32
32MSUS-53.7-50 25 32MSUS-63.7-30 30
40MSUS-5.75-5 10 40MSUS-67.5-3 9
40MSUS-51.1-7 14 40MSUS-61.1-4 12
40MSUS-51.5-10 20 40MSUS-61.5-5 18
40MSUS-52.2-14 28 40MSUS-62.2-9 27
40MSUS-53.7-18 36 40MSUS-63.7-11 33
40
40MSUS-53.7-23 46 40MSUS-63.7-14 42
50MSUS-5.75-3 3 50MSUS-6.75-2 3
50MSUS-51.1-5 5 50MSUS-61.1-3 4.5
50MSUS-51.5-7 7 50MSUS4-61.5-4 6
50MSUS-52.2-10 10 50MSUS-62.2-6 9
50MSUS-53.7-13 13 ––
100 (4B)
50
50MSUS-53.7-17 17 50MSUS-63.7-10 15
40MSU5-51.5-7 19 40MSU5-61.5-5 20
40MSU5-52.2-11 30 40MSU5-62.2-7 28
40MSU5-53.7-18 50 40MSU5-63.7-11 44
–– 40MSU5-63.7-13 52
40MSU6-55.5-25 69 40MSU6-65.5-15 60
–– 40MSU6-65.5-18 72
125 (5B) 40
40MSU6-57.5-35 97 40MSU6-67.5-23 92

16
䌍䌅䌍䌏㩷

17
䌍䌅䌍䌏㩷

18
䌍䌅䌍䌏㩷

Head Office
230, Moriwake, Miyuki-cho, Fukuyama-city, Hiroshima, 720-0003, Japan
Tel.[phone] Fax.[phone]
www.teral.net
2016 06
TP‑422‑00