Tsurumi Pump PU Series User manual

17237127/B-10015-7
INTRODUCTION
Thank you for selecting the Tsurumi PU submersible vortex sewage pump, PN submers-
ible vortex wastewater drainage pump, PSF submersible centrifugal effluent drainage
pump, or TM submersible titanium pump for your application.
This equipment should not be used for applications other than those listed in this manual.
Failure to observe this precaution may lead to a malfunction or an accident. In the event of
a malfunction or an accident, the manufacturer will not assume any liability. After reading
this Operation Manual, keep it in a location that is easily accessible, so that it can be re-
ferred to whenever information is needed while operating the equipment.
OPERATION MANUAL
PU Submersible Vortex Sewage Pump
PN
Submersible Vortex Wastewater Drainage Pump
PSF
Submersible Centrifugal Effluent Drainage Pump
TM Submersible Titanium Pump
CONTENTS
1.BE SURE TO READ FOR YOUR SAFETY ...................... 1
2.PART NAMES .................................................................. 4
3. PRIOR TO USE ............................................................. 5
4. INSTALLATION ............................................................. 6
5. ELECTRICAL WIRING .................................................... 9
6. OPERATION .................................................................... 12
7. MAINTENANCE AND INSPECTION ............................... 15
8. DISASSEMBLY AND REASSEMBLY PROCEDURE ...... 17
9.TROUBLESHOOTING ................................................... 22
TSURUMI MANUFACTURING CO., LTD.

-1-
1
BE SURE TO READ FOR YOUR SAFETY
：The mark indicates an action that must be taken, or instructs how to perform a task. The symbol
inside the mark describes the precaution in more detail ("provide ground work", in the case of the
example on the left).
：The mark indicates a WARNING or CAUTION item. The symbol inside the mark describes the
precaution in more detail ("electrical shock", in the case of the example on the left).
●
: Operating the equipment improperly by failing to observe this precaution may possibly
cause injury to humans and other physical damage.
: Operating the equipment improperly by failing to observe this precaution may possibly
lead to death or injury to humans.
: Gives information that does not fall in the WARNING or CAUTION categories.
●
：The mark indicates a prohibited action. The symbol inside the mark, or a notation in the vicinity of
the mark describes the precaution in more detail ("disassembly prohibited", in the case of the
example on the left).
Be sure to thoroughly read and understand the SAFETY PRECAUTIONS given in this section before using
the equipment in order to operate the equipment correctly.
The precautionary measures described in this section are intended to prevent danger or damage to you or
to others. The contents of this manual that could possibly be performed improperly are classified into two
categories: WARNING, and CAUTION. The categories indicate the extent of possible damage
or the urgency of the precaution. Note however, that what is included under CAUTIONmay at times
lead to a more serious problem. In either case, the categories pertain to safety-related items, and as such,
must be observed carefully.
WARNING
CAUTION
NOTE
Explanation of Symbols:
PRECAUTIONS TO THE PRODUCT SPECIFICATIONS
●Do not operate the product under any conditions other than those for which it is speci-
fied. Failure to observe the precaution can lead to electrical leakage, electrical
shock, fire, or water leakage, etc.
CAUTION
Frequency
Voltage
WARNING
Power
Supply
Capacity
●When transporting the product, pay
close attention to its center of
gravity and mass. Use an appropri-
ate lifting equipment to lift the unit.
Improper lifting may result in the
product damage, injury, or death.
●Electrical wiring should be
performed in accordance with all
applicable regulations in your
country. Provide a dedicated earth
leakage circuit breaker and a
thermal overload relay for the pump.
Imperfect wiring or neglecting the
installation of proper equipment
will cause electrical leakage, fire,
or explosion at worst.
●Use a power outlet that has a sufficient rating and has been exclusively
provided for the pump. If the power outlet is shared with other equipment,
it can lead to an abnormal heat of the outlet and can cause fire as a
result.
●Install the product properly in
accordance with this instruction
manual. Improper installation
may result in electrical leakage,
electrical shock, fire, water
leakage, or injury.
●Provide a secure grounding
dedicated for the product. Never
fail to provide an earth leakage
circuit breaker and a thermal
overload relay in your starter or
control panel (Both available on
the market). If an electrical
leakage occurs by due to a
product failure, it may cause
electrical shock.
PRECAUTIONS DURING TRANSPORT AND INSTALLTION

-2-
CAUTION
●Do not scratch, fold, twist, make
alterations, or bundle the cable, or
use it as a lifting device. The cable
may be damaged, which may
cause electrical leakage, short-
circuit, electrical shock, or fire.
●Be sure to provide a ground wire
securely. Do not connect the
ground wire to a gas pipe, water
pipe, lightening rod, or telephone
ground wire. Improper grounding
could cause electrical shock.
●Do not use the cabtyre cable, power
plug, or power outlet if it is damaged
or it is not closely fitted. Connect
every conductor of the cabtyre cable
securely to the terminals. Failure to
observe this can lead to electrical
shock, short-circuit, or fire.
●Install the discharge pipe securely
so that no water leakage may
occur. In addition, It is suggested to
provide a stand-by pump in case of
flooding. Failure to do so may
result in damage to nearby walls,
floors, and other equipment.
●When the product will be carried by
hand, decide the number of persons
considering the mass of the product.
When lifting up the product, do
not attempt to do it by simply
bowing from the waist. Use the
knees, too, to protect your waist.
●This pump is neither dust-proof nor
explosion-proof. Do not use it at a
dusty place or at a place where
toxic, corrosive or explosive gas is
present. Use in such places
could cause fire or explosion.
●If a hose is used for the discharge
line, take a measure to prevent the
hose from shaking. If the hose
shakes, you may be wet or
injured.
●Prevent a metallic object or dust
from sticking to the power plug.
Adhesion of foreign object to the
plug could cause electrical
shock, short-circuit, or fire.
PRECAUTIONS DURING TEST OPERATION AND OPERATION
CAUTION
WARNING
●Never try to operate the pump if
somebody is present in the pump
sump. If an electrical leakage
occurs, it can cause electrical
shock.
●When changing power connection is
needed to correct the direction of
rotation, be sure to turn off the
power supply (earth leakage circuit
breaker, etc.), and perform the work
after making sure that the impeller
has stopped completely. Failure to
do so may lead to electrical
shock, short-circuit, or injury.
●Never start the pump while it is
suspended, as the unit may jerk
and could lead to injury.
●When inspecting the pump, be sure
to turn off the power supply (earth
leakage circuit breaker, etc.) so that
the pump may not start acciden-
tally. Failure to do so may lead to
a serious accident.
●Do not operate the product under
any voltage other than described
on the nameplate with the voltage
variation limit within ±10%. If it is
operated with a generator, it is
strongly suggested not to operate
other equipment with the same
generator. Failure to observe
this caution may cause
malfunction and breakdown of
the product, which may lead to
electrical leakage or electrical
shock.
●Do not touch the product with bare
hands during or immediate after
the operation, as the product may
become very hot during operation.
Failure to observe this caution
may lead to be burned.
●Do not use the product in a liquid
other than water. Use in oil, salt
water or organic solvents will
damage it, which may lead to
electrical leakage or electrical
shock.
●Do not run the product dry or
operate it with its valve (sluice or
gate valve) closed, as doing so
will damage the product, which
may lead to electrical leakage or
electrical shock.
For water
only
Rated
Voltage
STOP
OFF
OFF

-3-
PRECAUTIONS DURING MAINTENANCE AND INSPECTION
CAUTION
WARNING
●Absolutely turn off the power
supply or disconnect the plug
before starting maintenance or
inspection. Do not work with wet
hands. Failure to observe these
cautions may lead to electrical
shock or injury.
●After reassembly, always perform a test operation before resuming use of the prod-
uct. Improper assembly can result in electrical leakage, electrical shock, fire,
or water leakage .
●In case any abnormality (excessive
vibration, unusual noise or odor) is
found in the operation, turn the
power off immediately and consult
with the dealer where it was
purchased or Tsurumi representa-
tive. Continuing to operate the
product under abnormal condi-
tions may result in electrical
shock, fire, or water leakage.
●Do not disassemble or repair any
parts other than those designated
in the operation manual. If repairs
are necessary in any other than
the designated parts, consult with
the dealer where it was
purchased or Tsurumi representa-
tive. Improper repairs can
result in electrical leakage,
electrical shock, fire, or water
leakage.
Test
operation
STOP
OFF
OFF
PRECAUTION TO POWER OUTAGE
●In case of power outage, turn off the power supply. The product will resume
operation when the power is restored, which presents serious danger to
people in the vicinity.
WARNING
power
outage
OFF
CAUTION
●Do not allow foreign objects (metal
objects such as pins or wires) to
enter the suction inlet of the pump.
Failure to observe this caution
could cause it to malfunction or
to operate abnormally, which
may lead to electrical leakage or
electrical shock.
●Do not use the product for hot or
warm liquid over 40℃, as doing so
will damage the product, which
may lead to electrical leakage or
electrical shock.
●When the product will not be used
for an extended period, be sure to
turn off the power supply (earth
leakage circuit breaker, etc.).
Deterioration of the insulation
may lead to electrical leakage,
electrical shock, or fire.
OFF
OTHER PRECAUTION
CAUTION
●Never use the product for potable water. It may present a danger to human
health. Potable
Water

-4-
Example: PU Series
Example: PN Series
Impeller
Screwed Flange
Pump Casing
Oil
Cabtyre Cable
Air Release Valve
Oil Plug
Oil Casing
Oil Lifter
Mechanical Seal
Impeller
Screwed Flange
Oil
Cabtyre Cable
Air Release Valve
Oil Plug
Strainer
Pump Casing
Mechanical Seal
Oil Casing
Oil Lifter
2PART NAMES

-5-
When the unit is delivered, first perform he following checks.
Inspection
While unpacking, inspect the product for damage during, shipment, and make sure all bolts
and nuts are tightened properly.
Specification Check
Check the nameplate of the unit to verify that it is the product that you have ordered. Pay
particular attention to its voltage and frequency specifications.
Product Specifications
CAUTION
Do not operate this product under any conditions other than those that have
been specified.
Accessory Check
Verify that all accessory items are included in the package.
Operation Manual ..................... 1
Note:
If you discover any damage or discrepancy in the product, please contact the dealer where
this equipment was purchased or the Tsurumi sales office in your area.
Major Standard Specifications
Applicable
Liquids
Consistency
and
Temperature
PU Series: Water, waste water, sewage, and liquid carrying waste and solid
matters; 0 ~ 40°C
PN Series: Water, waste water and effluent; 0 ~ 40°C
PSF Series: Water, waste water, treated effluent, and standing water; 0 ~ 40°C
TM Series: Water, waste water, effluent and sea water; 0 ~ 40°C
Pump
Impeller PU, PN, TM Series: Vortex type
PSF Series: Closed type
Working
Atmosphere
The chlorine gas concentration should be below 0.1 ppm. (PU/PN/PSF Series)
Note: The concentration over 0.1 ppm may cause the pump to corrode.
Shaft Seal Double Mechanical Seal
Bearing Shielded Ball Bearing
Specifications Dry Submersible Induction Motor, 2-Pole
Insulation Class E
Protection
System
(built-in) Circle Thermal Protector (Three-Phase)
Miniature Protector (Single-Phase)
Liquid Paraffin VG32Lubricant
Connection Screwed Flange
Motor
3PRIOR TO OPERATION

-6-
CAUTION
• Do not use the pump for pumping liquids other than water, such as oil, salt
water (TM Series excepted), or organic solvents.
• Use with a power supply voltage variation within ±10% of the rated voltage.
• The water temperature for operating the pump should be between 0 ~ 40°C.
Failure to observe the precautions given above could cause the pump to
malfunction, which may lead to current leakage or electrical shock.
Maximum Allowable Pressure
CAUTION
Do not operate the pump in an area that is exposed to a water pressure that
exceeds the values given below.
Preparation for Installation
Single-phase power supply:
Use a megger to measure the resistance between
the tip of the cabtyre cable plug and the ground
terminal to verify the insulation resistance of the
motor.
Measure twice the resistance between each of the
two tips of the plug and ground.
(This drawing shows a 2-pin plug type.)
Insulation resistance reference value
= 20M Ω minimum
Note:
The insulation resistance reference value of 20M Ω minimum is based on a new or repaired
pump. For reference values of a pump that has already been put into operation, refer to "7.
Maintenance and Inspection" of this manual.
Note:
To use the pump for a special solution, contact the dealer where it was purchased, or the
Tsurumi sales office in your area.
Models with output of 0.75kW or under 0.2MPa (2kgf/cm2) — discharge pressure during use
Models with output of 1.5kW 0.3MPa (3kgf/cm2) — discharge pressure during use
Applicable Pump Maximum Allowable Pressure
U-Red(Brown) G-Green(Green/Yellow)
W-Black(Black)
V-White(Grey)
MΩ
U V W G
Single-Phase
Three-Phase
MΩ
Three-phase power supply:
Use a megger to measure the resistance between
each core of the cabtyre cable and the (green)
ground wire to verify the insulation resistance of
the motor.
CAUTION
Beware that the power plug
varies by country or region.
4INSTALLATION

-7-
Precautions During Installation
WARNING
When installing the pump, be mindful of the pump's center of gravity and
weight. If the pump is not suspended properly, the pump may fall and break,
which may lead to injury.
CAUTION
When installing or moving the pump, never suspend the pump by the cabtyre
cable. Doing so will damage the cable, which may cause a current leakage,
electrical shock, or fire.
Refer to the installation examples illustrated below and pay attention to the points de-
scribed below to install the pump.
CAUTION
During piping work if the welding sparks, paint, or concrete come in contact
with the pump, they could cause the pump to malfunction, which may lead to
current leakage or electrical shock.
Free Standing Specification Guide-Rail Specification
Hook
Control Panel
Terminal Box
Manhole
Guide Support
Cabtyre Cable
Start Position
Chain
Cabtyre Cable
Chain
Non-return Valve
Gate Valve
Pipe
Guide Pipe
Pump
Duck foot Bend
Stop Position
Baffle Plate
Gate Valve
Hook
Control Panel
Terminal Box
Manhole
Baffle Plate
Start Position
Stop Position
Pump
Pipe
Non-return Valve
(1) When transporting or installing the pump, do not kink the cabtyre cable or use it in
place of a rope.
(2) With the cabtyre cable lifted slightly, secure it to the hook (a hook must be prepared in
advance by placing it on the frame of a manhole or the like).
CAUTION
Do not operate the pump with the cabtyre cable dangling. Failure to observe
this precaution may cause the cabtyre cable to become wrapped around the
impeller, which could cut the cable, break the impeller, or cause flooding,
which may lead to current leakage or electrical shock.
(3) Install the pump on top of a horizontal surface such as concrete, in an area that is free
of turbulence and does not cause the pump to take air in.
(4) The area near the inlet of a water tank is susceptible to turbulence or allows the pump
to take air in; therefore, place the pump and the float switch away from the inlet or in-
stall a baffle plate.
(5) Properly perform piping work so as not to create any air pockets in the middle of
piping.
CAUTION
With automatic control, the sewage water in the pipe could flow backwards,
causing the water surface control to react immediately. As a result, the pump
will operate ON/OFF repeatedly, which could cause the pump to malfunction.
(6) Install a non-return valve if the pump tank is deep, or if the vertical head or the lateral
distance is long.

-8-
Installing the Float
Insert the float pipe into the holder, and use
a Phillips screwdriver to tighten the set screw.
Although the float level is preset, follow the
procedures given below to change the level.
(1) Loosen the screw and adjust the height at
the top and the bottom of the float pipe to
set the starting and stopping water levels.
(2) After completing the setting, tighten the
screws to secure both the top and the bot-
tom of the float pipe.
When you are going to set a lower start level,
pay attention not to operate the pump at
the levels below the C.W.L. longer than 15
minutes.
* In the case of an automatic alternating
model, apply the same procedures to set
the parallel operating water level. Then,
remove the alternating start float by loos-
ening its screw, set the alternating starting
water level as desired, and secure the alter-
nating start float in place by tightening the
screw.
* To prevent unintended operation, face the
floats outward.
To change the operating water level on
an automatic alternating model, perform
the setting by referring to the diagram
on the right. There is no need to change
its stopping water level.
* After changing the water level on an
automatic alternating model, make
sure to adjust its automatic side.
* Pay attention to the positional rela-
tionship between floats 3, 4, and 5 to
perform the settings.
Number Name Color
1No. 1 Pump Stop Float Red
2No. 2 Pump Stop Float Red
3No. 2 Pump Alternating Start Float Yellow
4No. 1 Pump Start Float Yellow
5Green
No. 1 Pump / No. 2 Pump
Parallel Operation Float
Holder Start Float
Stop Float
Float Pipe
Water Level Adjustment
Set Screw
Start Float
Stop Float
Set Screw
Adjusting the start float to set
the starting water level as
desired:
Setting the stop float water
level high:
Start Float
Stop Float
Set Screw
Water Level
Adjustment
L
L
Setting the start float
water level low:
Make sure that the
float lead wire length
L is 40mm.
Failure to observe
this precaution could
cause the pump to
operate improperly.
Make sure that the
float lead wire length
L is 200mm.
Failure to observe
this precaution could
cause the pump to
operate improperly.
Automatic Pump
(No. 1 Pump)
Automatic Alternating Pump
(No. 2 Pump)
Starting
Water Level
Starting
Water
Level Stopping
Water
Level
Stopping
Water
Level
Parallel
Operation
Water Level
50mm
minimum
50mm
minimum
1
3
4
5
2
Attaching a Chain to Suspend the Pump
Chain
Bolt
Shackle
Washer (for 1.5kW)
Refer to the illustration on the right in order to suspend
the pump by a chain. (On a model with a 1.5kW power
output, use a washer.)
CAUTION
Make sure that the chain does not
become twisted during installation.
Failure to observe this precaution
could cause the chain to break and the
pump to fall and break, which could
lead to injury.
Note:
To use the pump with the guide rail, refer to the
separate operation manual entitled "Guide Rail".

-9-
Electrical Wiring Work
WARNING
• All electrical work must be performed by an authorized electrician,
in compliance with local electrical equipment standards and internal
wiring codes. Never allow an unauthorized person to perform electrical
work because it is not only against the law, but it can also be extremely
dangerous.
• Improper wiring can lead to current leakage, electrical shock, or fire.
• Absolutely provide a dedicated earth leakage circut breaker and a thermal
overload relay suitable for the pump (available on the market). Failure
to follow this warning can cause electrical shock or explosion when the
product fails or an electrical leakage occurs.
Operate well within the capacity of the power supply and wiring.
Grounding
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 Plug
WARNING
Before inserting the power plug or connecting the wires to the terminal
board, make sure that the power supply (i.e. circuit breaker) 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 cabtyre cables, power plugs, or loose power outlets.
Failure to observe this precaution could lead to electrical shock, short circuit,
or fire.
Follow the diagram on the right to connect the power.
When a single-phase power source is used, con-
nect the leads to the control panel terminals as
shown in the diagram, making sure they do not
become twisted together.
When a three-phase power source is used, con-
nect the leads to the control panel terminals as
shown in the diagram, making sure they do not
become twisted together.
Single Phase
Three Phase
U-Red(Brown) G-Green
(Green/Yellow)
W-Black(Black)
V-White(Grey)
U V W G
L1-Red(Brown) G-Green
(Green/Yellow)
L2-White(Blue)
L1 L2 G
When using a three-prong grounded plug,connect as shown in the drawing.
CAUTION
Be sure to use a dedicated
power supply with a ground
leakage circuit breaker.
Note:
the shape of the plug may differ from that
shown in the illustration.
(This drawing shows a 2-pin plug type.)
5ELECTRICAL WIRING
CAUTION
Beware that the power plug
varies by country or region.
Note:
The cabtyre cable, if it is unused, is termi-
nally processed. If there is a need to peel
off the cable again, have the terminal pro-
cessed.

-10-
Motor Protector
The pump is equipped with a built-in motor protector (circle thermal protector).
If a current overload or overheating occurs under the symptoms given below, the pump will
stop automatically to protect the motor regardless of the water level at the time of opera-
tion.
• Extreme fluctuation of power supply voltage
• Pump operated under overload condition
• Pump operated at open phase or binding condition
Note:
After the motor protector has tripped, the motor automatically resumes its operation.
Therefore, make sure to disconnect the cabtyre cable from the terminal board or the power
outlet, and eliminate the cause of the problem.
Do not operate the pump at unusually low head, or with the impeller clogged with debris.
Doing so will not only prevent the pump from attaining its full potential, but may also gen-
erate abnormal noise and vibration and damage the pump.
CAUTION
• If it is necessary to extend the cabtyre cable, use a core size equal to
or larger than the original. This is necessary not only for avoiding a
performance drop, but to prevent cable overheating which can result in fire,
electrical leakage or electrical shock.
• If a cable with cut insulation or other damage is submerged in the water,
there is a danger of water seeping into the motor causing a short. This may
result in damage to the product, electrical leakage, electrical shock, or fire.
• Be careful not to let the cabtyre cable be cut or become twisted. This may
result in damage to the product, electrical leakage, electrical shock, or fire.
• If it is necessary to submerse the connection leads of the cabtyre cable
in water, first seal the leads completely in a molded protective sleeve, to
prevent electrical leakage, electrical shock, or fire.
Do not allow the cabtyre cable leads to become wet.
Make sure the cable does not become excessively bent or twisted, and does not rub against
a structure in a way that might damage it.

-11-
Green
White
Red Main Coil
Ground
Aux. Coil
Operating
Capacitor
Protector
Green
White
Red Main coil
Protector
Transformer
Relay
(b contact)
Stop Float Switch
(b contact)
Start Float
Switch
(b contact)
Relay
Relay
(a contact)
Ground
Aux.
Coil
Operating
Capacitor
R
Power Supply: Single-Phase
Power Supply: Single-Phase
Green
W-Black
V-White
U-Red
Motor Coil
Motor coil
Motor coil
Ground
Protector
Transformer
Relay (b contact) Stop Float
Switch
(b contact)
Alternating Start
Float Switch
(b contact)
Parallel Operation
Float Switch
(a contact)
Relay
R
Green
Transformer
Relay (b contact)
Stop Float Switch
(b contact)
Start Float
Switch
(b contact)
Relay
Relay
(a contact)
Ground
R
Motor Coil
Motor Coil
Motor Coil
Protector
W-Black
V-White
U-Red
Power Supply: Three-Phase
Power Supply: Three-Phase
Green
White
Red Main Coil
Ground Protector
Transformer Relay
(b contact) Stop Float Switch
(b contact)
Alternating Start
Float Switch
(b contact)
Parallel Operation
Float Switch
(a contact)
Relay
Aux.
Coil
Operating
Capacitor
R
Power Supply: Single-Phase
Power Supply: Three-Phase
Green
Motor Coil
Motor Coil
Motor Coil
Ground
Protector
W-Black
V-White
U-Red
Green
W-Black
V-White
U-Red
Motor Coil
Motor Coil
Motor Coil
Ground
Protector
Transformer
Relay (a contact) Stop Float Switch
(b contact)
Start Float Switch
(b contact)
Relay
R
Green
W-Black
V-White
U-Red
Motor coil
Motor Coil
Motor Coil
Ground
Protector
Transformer
Relay (a contact)
Stop Float
Switch
(b contact)
Alternating Start
Float Switch
(b contact)
Alternating
Operation
Float Switch
(a contact)
Relay
R
Power Supply: Three-Phase
Power Supply: Three-Phase
PUA/PNA/PSFA Series
Automatic Operation Circuit
(Output 1.5kW)
PUW/PNW/PSFW Series
Automatic Alternating Operation Circuit
(Output 1.5kW)
PUZ/PNZ/PSFZ Series
PU/PN/PSF/TM Series
Non-Automatic Circuit
(Output 0.75kW maximum)
PU/PN/PSF/TM Series
Non-Automatic Circuit
PUA/PNA/PSFA/TMA Series
Automatic Circuit
(Output 0.75kW maximum)
PUA/PNA/PSFA/TMA Series
Automatic Circuit
(Output 0.75kW maximum)
PUW/PNW/PSFW Series
Automatic Alternating Circuit
(Output 0.75kW maximum)
PUW/PNW/PSFW Series
Automatic Alternating Circuit
(Output 0.75kW maximum)
(Blue)
(Green/Yellow)
(Brown)
(Blue)
(Green/Yellow)
(Brown)
(Grey)
(Black)
(Green/Yellow)
(Brown)
(Grey)
(Black)
(Green/Yellow)
(Brown)
(Grey)
(Black)
(Green/Yellow)
(Brown)
(Grey)
(Black)
(Green/Yellow)
(Brown)
(Grey)
(Black)
(Green/Yellow)
(Brown)
Ground
(Green/Yellow)
Ground Protector
White
Red
(Blue)
(Brown)
Frame
Grounding
Main Coil Aux. Coil
Operating
Capacitor
Float Switch
(a contact)
Electrical Circuit Diagrams
Note:
a contact = normally-open contact
b contact = normally-closed contact

-12-
Prior to Operation
(1) Once again, check the nameplate of the pump to verify that its voltage and frequency
are correct.
CAUTION
Improper voltage and frequency of the power supply will prevent the pump
from attaining its full potential, and may also damage the pump.
Note:
Verify the specs on the pump's nameplate.
(2) Check the wiring, power supply voltage, the capacity of the ground leakage circuit
breaker, and the insulation resistance of the motor.
Insulation resistance reference value = 20MΩ minimum
Note:
The insulation resistance reference value of 20MΩ minimum is based on a new or repaired
pump. For reference values of a pump that has already been put into operation, refer to
"Maintenance and Inspection".
(3) Adjust the setting of the thermal relay (i.e. 3E relay) to the pump's rated current.
Note:
Verify the rated current on the pump's nameplate.
6-1 NON-AUTOMATIC OPERATION
Trial Operation
WARNING
Never start the pump while it is suspended, as the pump may jerk and cause
a serious accident involving injury.
(1) Operate the pump for a short time (1 to 2 seconds) and verify the direction of the rota-
tion of the impeller. Observe the pump unit from above, and if its recoil is in the coun-
terclockwise direction, the direction of its rotation is correct.
CAUTION
Make sure to check the pump's direction of rotation with the pump exposed
to the atmosphere. Operating the pump in reverse while it is submerged in
water will damage the pump, which may lead to current leakage and electrical
shock.
(2) To reverse the rotation, the following countermeasures must be taken.
WARNING
Before changing the connections for reverse
rotation, make sure that the power supply
(i.e. circuit breaker) is properly disconnected
and that the impeller has stopped
completely. Failure to observe this may lead
to electrical shock, short, or injury.
COUNTERMEASURE
Direct-on-line starting
Interchange any two of the three wires designated U, V, and W,
respectively.
Example:
U V W G
Interchanging
phases V and W
6OPERATION

-13-
U V WG
V
U V G
W
COUNTERMEASURE
If the power supply voltage deviates from the tolerance value, the cause of the deviation may be the capacity
of the power supply or the extension cable that is used. Refer to section "5. Electrical Wiring" to operate the
pump in the correct manner.
COUNTERMEASURE
Because an overload condition may be present at the pump motor if the operating current exceeds the rated
current, follow the instructions in section "4. Installation" to operate the pump in the correct manner.
(3) Connect the pump to the pipe and submerge it in water.
(4) Operate the pump for a short time (3 to 10 minutes) and perform the following checks:
Using an AC ammeter (clamp), measure the operating current at
the phases U, V, and W that are connected to the terminal board.
Using an AC voltmeter (tester), measure the voltage at the terminal
board.
Power supply voltage variation
= within ±10 % of the rated voltage
CAUTION
In case the pump exhibits an abnormal condition (such as a considerable
amount of vibration, noise, or smell), disconnect the power supply
immediately and contact the dealer where you purchased the equipment, or
Tsurumi's sales office in your area. If the pump continues to be used in the
abnormal state, it may cause current leakage, electrical shock, or fire.
(5) Proceed with the normal operation if no abnormal conditions are found during the trial
operation.
Operation
WARNING
The pump unit may be extremely hot during operation. To prevent burns, do
not touch the pump unit with bare hands during or after the operation.
Pay attention to the water level during the pump operation. The pump will become dam-
aged if it is allowed to operate dry.
Due to an overload operation or a pump malfunction, if the motor protector trips to stop
the pump, make sure to eliminate the cause of the problem before restarting.
A frequent ON/OFF will shorten the lifetime of the pump.
To operate a submersible pump (including automatic operation), set the water level so that
the pump will operate about 10 times per hour.
However, as for free-standing type of the 1.5kW model, set the operating condition of the
pump so that it may run for less than 12 hours per day and 4000 hours per year. The start-
ing reaction of the pump may let the pump rotate to the direction of screwing the discharge
pipe, which could cause damage to the screw flange of the pump. If frequent starts are ex-
pected in your installation, prevent the pump from rotating by fixing it to the pipe or other
method.
Note:
A large amount of amperage flows when a submergible pump is started, causing the tem-
perature of its windings to rise rapidly. Beware that a frequent stop-and-go operation of
the pump will accelerate the deterioration of the insulation of the motor windings and thus
affect the use life of the motor.
Operating Water Level
CAUTION
Do not operate the pump at the levels below the C.W.L. longer than 15
minutes, as it could damage the pump, causing current leakage and electrical
shock (30 minutes maximum on the models with 0.15kW power output). For
details on the lowest water level, refer to the dimension drawing, which is
provided separately.

-14-
6-2 Automatic Operation
Trial Operation
Equipped with floats to detect the water level and an internal control circuit, the automatic
type (PUA, PNA, PSFA, TMA) pump can perform an automatic drainage operation alone by
merely connecting its cable to a power supply.
Connect the power and perform a trial operation as follows:
Note:
Allow the pump to operate a minimum of 2 seconds for each trial operation. The trial op-
eration must be completed within 1 minute.
CAUTION
In case the pump exhibits an abnormal condition (such as a considerable
amount of vibration, noise, or smell), disconnect the power supply
immediately and contact the dealer where you purchased the equipment, or
Tsurumi's sales office in your area. If the pump continues to be used in the
abnormal state, it may cause current leakage, electrical shock, or fire.
(1) Direct all the floats downward.
(2) First raise the (red) stop float, then the (yellow) start
float. This will cause the pump to start.
(3) Next, return the (yellow) start float, and then the (red)
stop float to their original positions. This will cause the
pump to stop.
(4) Perform steps (2) and (3) consecutively two or more
times to verify the operation.
Check float switch operation
Move
Float Switch
A Type
B Type
Note:
The trial operation must be completed within 1 minute.
CAUTION
In case the pump exhibits an abnormal condition (such as a considerable
amount of vibration, noise, or smell), disconnect the power supply
immediately and contact the dealer where you purchased the equipment, or
Tsurumi's sales office in your area. If the pump continues to be used in the
abnormal state, it may cause current leakage, electrical shock, or fire.
Equipped with floats to detect the water level the automatic type (PUZ, PNZ, PSFZ) pump can
perform an automatic drainage operation alone by merely connecting its cable to a power
supply.
Connect the power and perform a trial operation as follows:
(1) Direct all the floats downward.
(2) Raise the (yellow) float. This will cause the pump to
start.
(3) Next, return the (yellow) float to their original posi-
tions. This will cause the pump to stop.
(4) Perform steps (2) and (3) consecutively two or
more times to verify the operation.
Check float switch operation
Move
Float Switch

-15-
Regular maintenance and inspection are indispensable to maintaining the pump's per-
formance. If the pump behaves differently from its normal operating condition, refer to
section "9. Troubleshooting" and take appropriate measures at an early stage. We also
recommend that you have a spare pump on hand for an emergency.
Prior to Inspection
WARNING
Make sure that the power supply (i.e. circuit breaker) is disconnected and
disconnect the cabtyre cable from the power outlet or remove it from the
terminal board. Failure to do so may cause electrical shock or unintended
starting of the pump, which may lead to serious accidents.
(2) Inspecting the Pump Exterior
Verify that there is no damage, and that the bolts and nuts have not loosened.
Note:
If the pump must be disassembled for repair due to damage or loose bolts or nuts, contact
the dealer where it was purchased, or the Tsurumi sales office in your area.
(1) Washing the Pump
Remove any debris attached to the pump's outer surface,
and wash the pump with tap water. Pay particular atten-
tion to the impeller area, and completely remove any de-
bris from the impeller. To remove the strainer, use a flat-
tip screwdriver to pry on the three areas of the strainer
as illustrated on the right (PN, PSF, and TM models). To
reinstall, simply install the strainer in place.
flat-tip screwdriver
Note:
It takes approximately 1 second for the pump to start after the float is moved. Allow the
pump to operate a minimum of 2 seconds for each trial operation. The trial operation must
be completed within 1 minute.
CAUTION
In case the pump exhibits an abnormal condition (such as a considerable
amount of vibration, noise, or smell), disconnect the power supply
immediately and contact the dealer where you purchased the equipment, or
Tsurumi's sales office in your area. If the pump continues to be used in the
abnormal state, it may cause current leakage, electrical shock, or fire.
(5) Again, direct all the floats downward.
(6) Raise the (red) stop float, then the (green) parallel operation float. This will cause the
pump to start.
(7) Next, return the (green) parallel operation float, and then the (red) stop float to their
original positions. This will cause the pump to stop.
(8) Perform steps (6) and (7) consecutively two or more times to verify the operation.
6-3 Automatic Alternating Operation
The (PUW, PNW, or PSFW) automatic alternating type pump is used in conjunction with
the (PUA , PNA, or PSFA) automatic type. Equipped with floats to detect the water level and
an internal control circuit, it can perform an automatic alternating drainage operation by
merely connecting its cable to a power supply.
Connect the power and perform a trial operation as follows:
Check float switch operation
Move
Float Switch
(1) Direct all the floats downward.
(2) First raise the (red) stop float, then the (yellow) alternating
start float.
(3) Next, return the (yellow) start float, and then the (red)
stop float to their original positions. This will cause the
pump to stop.
(4) Perform steps (2) and (3) consecutively three or more
times to verify the operation. The pump will start and
stop every other time.
Trial Operation
7MAINTENANCE AND INSPECTION

-16-
Storage
If the pump will not be operated for a long period of time, pull the pump up, wash the
pump, allow it to dry, and store it indoors.
Note:
For reinstallation, be sure to perform a trial operation before putting the pump into opera-
tion.
If the pump remains immersed in water, operate it on a regular basis (i.e. once a week).
Note:
Refer to section "Oil Inspection and Change Procedures" below for further detail.
Interval
Monthly
Daily
Inspection Item
Yearly
Semi-yearly
Measuring the operating current
Measuring the insulation resistance
Note: The motor must be inspected if the insulation resistance is considerably lower
than the last inspection.
Inspecting oil (models with 0.15~0.75kW power output)
3,000 hours or 12 months, whichever comes first
Inspecting oil (models with 1.5kW power output)
6,000 hours or 12 months, whichever comes first
Power supply voltage variation
= within ±10% of the rated voltage
Measuring the power voltage
Once every
2 years
Once every
2 to 5 years
Changing oil (models with 0.15~0.75kW power output)
Note: The inspection and replacement of the mechanical seal requires specialized
equipment. To have this operation performed, contact the dealer where this
equipment was purchased, or the Tsurumi sales office in your area.
Overhaul
Note: To overhaul the pump, contact the dealer where it was purchased, or the
Tsurumi sales office in your area.
4,500 hours or 24 months, whichever comes first
Changing oil (models with 1.5kW power output)
9,000 hours or 24 months, whichever comes first
Changing the mechanical seal (models with 0.15~1.5kW power output)
Insulation resistance reference value = 1MΩ minimum
Inspecting the pump A noticeable drop in performance
may indicate wear on the impeller or
other parts, or else clogging of the
strainer. Replace any worn parts, or
remove the clogged debris.
Inspecting the
operation of air
release valve
Check to confirm that the air release
valve (air-lock prevention device)
works normally when you start the
pump.
Inspection of lifting Replace if damage, corrosion, or wear has occurred to the chain or
rope. Remove if foreign object is attaching to it.
To be within the rated current
The pump must be overhauled even if the pump appears normal during operation.
Especially, the pump may need to be overhauled earlier if it is used continuously.
air
release
valve
Section of a pump casing
Inspection of the operation
of air release valve
Daily and Periodic Inspection

-17-
This section explains the disassembly and reassembly processes that are involved up
to the replacement of the impeller itself. Operations involving the disassembly and
reassembly of the sealing portion (i.e. mechanical seal) and of the motor require a
specialized facility including vacuum and electrical test equipment. For these opera-
tions, contact the dealer where this equipment was purchased, or the Tsurumi sales
office in your area.
Disassembly Procedure
Prior to Disassembly and Reassembly
WARNING
Before disassembling and reassembling the pump, be sure that the
power supply (i.e. circuit breaker) is disconnected, and remove the
cabtyre cable from the outlet or the terminal board. Do not connect
or disconnect the power plug with a wet hand, in order to prevent
electrical shock. Do not perform an activation test (to check the
rotation of the impeller) during disassembly and reassembly. Failure
to observe this precaution could lead to a serious accident, including
injury.
PU Series
Note:
Before disassembling, be sure to drain the oil from the pump.
(1) This pump has adopted a back-pullout construction. Therefore, by removing the four
cross-recessed hex bolts ⑨(or hex nuts on the 1.5kW model), the pump can be inspect-
ed while the impeller ④remains attached to the motor mainshaft.
(2) Remove the two cross-recessed hex bolts ⑥, and remove the screwed flange ⑦, packing ⑧,
and two hex nuts ⑩, in that order.
(3) Remove the truss screw ③, and remove the impeller ④ and the spring washer ⑤, in that
order.
(4) Wash and inspect all parts to make sure that they are not worn or damaged.
Note:
If any part is worn or damaged, make sure to replace it with a new part. Replace the pack-
ing and the O-ring each time the pump is disassembled.
8
DISASSEMBLY AND REASSEMBLY PROCEDURE
Oil Inspection and Changing Procedures
Inspecting Oil
Remove the oil plug and take out a small amount
of oil. The oil can be extracted easily by tilting the
pump so that the oil filler plug faces downward. If
the oil appears milky or intermixed with water, a
likely cause is a defective shaft sealing device (i.e.
mechanical seal), which requires that the pump
be disassembled and repaired.
Changing Oil
Remove the oil plug and drain the oil completely.
Pour a specified volume of oil into the oil filler
inlet.
Note:
The drained oil must be disposed of properly to prevent it from being released into the
sewer or rivers. The packing or the O-ring for the oil plug must be replaced with a new part
at each oil inspection and change.
Phillips Screwdriver
Oil Plug
Oil Inlet
Packing
Model with 0.25 ~ 0.75kW power output
Model with 0.15kW power output
240
150
Applicable Model Specified
Volume
Unit :
Model with 1.5kW power output 500
Specified Oil:
Liquid Paraffin VG32

-18-
Disassembly Diagram
Note:
The description of the disassembly diagram above may differ slightly in shape and con-
struction depending on the model.
Reassembly Procedure
Observe the precautions given below and reas-
semble the unit in the reverse order of disassem-
bly.
(1) Thoroughly wash all parts before reassembly.
(2) Make sure that the packing is securely fitted.
(3) Pay attention to the proper installation direc-
tion of the following part:
Spring Washer ⑤
[Back-Pullout Construction]
*Motor
Portion
*Pump Portion
Hex Bolt
O-Ring
Impeller
[Pump Disassembly Diagram]
O-Ring
Truss Screw
Pump Casing
Packing
Spring Washer
Hex Nut
Hex Bolt
Screwed Flange
Hex Bolt
Impeller 4
4
2
2
A
A
B
B
1
5
6
7
3
8
9
9
10
Truss Screw
Spring Washer
Impeller
Motor Shaft
3
4
5
[Assembly direction of spring washer]

-19-
Disassembly Procedure
Disassembly Diagram
PN Series
Note:
The description of the disassembly diagram above may differ slightly in shape and con-
struction depending on the model.
Reassembly Procedure
Observe the precautions given below and reassem-
ble the unit in the reverse order of disassembly.
(1) Thoroughly wash all parts before reassembly.
(2) Make sure that the packing is securely fitted.
(3) Pay attention to the proper installation direc-
tion of the following parts:
Spring Washer ⑥
[Back-Pullout Construction]
*Motor
Portion
*Pump Portion
Hex Bolt
O-Ring
Impeller
[Pump Disassembly Diagram]
O-Ring
Truss Screw
Pump Casing
Packing
Spring Washer
Hex Nut
Hex Bolt
Screwed Flange
Hex Bolt
Impeller
3
3
A
A
B
B
5
10
2
Strainer 1
4
5
6
7
8
9
10
11
Note:
Before disassembling, be sure to drain the oil from the pump.
(1) This pump has adopted a back-pullout construction. Therefore, by removing the four
cross-recessed hex bolts ⑩(or hex nuts on the 1.5kW model), the pump can be inspect-
ed while the impeller ⑤ remains attached to the motor mainshaft.
(2) Remove the two cross-recessed hex bolts ⑦, and remove the screwed flange ⑧, packing ⑨,
and two hex nuts ⑪, in that order.
(3) Remove the truss screw ④, and remove the impeller ⑤ and the spring washer ⑥, in that
order.
(4) Wash and inspect all parts to make sure that they are not worn or damaged.
Note:
If any part is worn or damaged, make sure to replace it with a new part. Replace the pack-
ing and the O-ring each time the pump is disassembled.
Truss Screw
Spring Washer
Impeller
Motor Shaft
4
5
6
[Assembly direction of spring washer]