Submersible Sump Pump Series
For drainage of wastewater, sewage, facilities and construction equipment.

High-efficiencynon-clogimpeller Reinforced glass fiber resin

Stainless steel

Vortex with cutter

Ver.3.1

WUP4

Kawamoto's Submersible Sump Pump SeriesSpecification table by model (liquid temperature: 0 to 40°C, pH 5 to 9)

For Wastewater, 2 poles
WUP4 type

WUZ2/4 type

VortexAdjustable float position

Semi-open

Adjustable float position

Reinforced glass fiber
resin• Motor
Stainless steel frame
2-pole drysealed motor• Materials
Casing: Plastic
Impeller: Plastic
Shaft: SUS304• Bore: 32, 40, 50mm
• Output: 0.15 - 0.75kW

Titanium• Motor• Motor2-pole drysealed motor
Materials• Casing: Cast iron
Impeller: SCS13
Shaft: SUS403• Bore: 40, 50mm
• Output: 0.25 - 0.75kW

Titanium frame
2-pole drysealed motor• Materials
Casing: Plastic
Impeller: Plastic
Shaft: Titanium• Bore: 32 - 80mm
• Output: 0.15 - 3.7kW
For seawater

For Sewage, 2 poles

For Wastewater, 2 poles
SU4 type

YUK2 type

VortexWUO(4) type

ClosedVortexZU3/4 ZUJ/4 type

Adjustable float position• MotorReinforced glass fiber
resin• Motor
Stainless steel frame
2-pole drysealed motor• Materials
Casing: Plastic
Impeller: Plastic
Shaft: SUS304• Bore: 40 - 80mm
• Output: 0.15 - 3.7kW• Motor2-pole drysealed
motor• Materials
Casing: Cast iron
Impeller: Bronze
Shaft: SUS403• Bore: 50mm
• Output: 0.75 - 7.5kW

2-pole drysealed motor• Materials
Casing: Cast iron
Impeller: Cast iron
Shaft: SUS403• Bore: 50 - 80mm
• Output: 0.4 - 7.5kW

For Sewage, 4 poles
BUW type

High-efficiency
non-clog

BU4 type

Non-clog

High efficiency
Bore to pass foreign
objects 100% dia.

Semi-open
Non-clog• Motor• Motor4-pole drysealed
motor• Materials
Casing: Cast iron
Impeller: SCS13
Shaft: SUS420J2• Bore: 65, 80mm
• Output: 0.75 - 7.5kW

4-pole drysealed
motor• Materials
Casing: Cast iron
Impeller: Cast iron
Shaft: SUS420J2• Bore: 50 - 150mm• Output: 0.75 - 22kW

High efficiency

High durability

Rust resistant

Product

Product

For Sewage, 4 poles
AU4 type

Vortexwith cutter

VU4 type

Vortex

VUS type

Vortex• Motor• Motor• Motor4-pole drysealed
motor• Materials
Casing: Cast iron
Impeller: Ductile iron
Shaft: SUS420J2
Cutter: Alloy tool steel(Ceramic coated)• Bore: 50 - 100mm• Output: 0.75 - 7.5kW

4-pole drysealed
motor• Materials
Casing: Cast iron
Impeller: Cast iron
Shaft: SUS420J2• Bore: 50 - 100mm• Output: 0.75 - 15kW

4-pole drysealed
motor• Materials
Casing: SCS13
Impeller: SCS13
Shaft: SUS304• Bore: 50 - 100mm• Output: 0.4 - 7.5kW

For Manholes, 4 poles
High efficiency
non-clog type

BUM type
High efficiency

VUM type

Vortex

Stainless steel• Motor• Motor4-pole drysealed
motor• Materials
Casing: Cast iron
Impeller: SCS13
Shaft: SUS420J2• Bore: 65, 80mm
• Output: 0.75 - 7.5kW

4-pole drysealed
motor• Materials
Casing: SCS13
Impeller: SCS13
Shaft: SUS304
Motor cover: SCS13
Bell mouth: SCS13• Bore: 50 - 100mm• Output: 0.4 - 7.5kW

For Construction works / For Residual water drainage
DUG2/DU4/
DUM2 type

DU4 type

Vortex

LU2 type

Semi-open• Motor• Motor2-pole drysealed motor• Materials
Casing: Cast iron (DUG2)
Synthetic rubber (DU4)
Synthetic rubber + SUS304 (DUM2)
Impeller: Plastic (DUG2)Urethane rubber (DU4, DUM2)
Shaft: SUS403• Bore: 40, 50mm
• Output: 0.25 - 2.2kW

2-pole drysealed
motor• Materials
Casing: Synthetic
rubber
Impeller: Plastic
Shaft: SUS403• Bore: 50mm
• Output: 0.4kW

Reinforced glass fiber resin

WUP4 type

Selection

Application For drainage of wastewater, septic tank sump, dirty sump and springwaterᶃ Light and easy to handle, due to resinified pump parts and motor withstainless steel frame.
ᶄ Corrosion proof and long-life.
ᶅ Equipped with a small special motor with built-in auto-cut of a large
starting torque to ensure safety.
ᶆ Vortex type and excellent performance to pass foreign objects.
ᶇ Strainer is quick detachable type for easy cleaning and maintenance.
ᶈ Can be paired with plastic pedestal support (special accessory).
ᶉ Japan Public Buildings Association compliant. (50mm-bore products)
ᶊ Starting/stopping water levels are adjustable in L and LN types.
ᶋ Improved strainer strength. (compared to our conventional models)
TypesOperation method

Capacity (m3/min)Ability to pass foreign objects
Model

Bore (mm)Diameter of foreign objects(sphere) (mm)Non-automatic

WUP4 type32

14

Automatic

WUP4-L type40

14

Auto alternate

WUP4-LN type50

20

WUP4 type

WUP4-L type

Total pump head (m)FeaturesTotal pump head (m)For Wastewater, 2 poles

Capacity (m3/min)

WUP4-LN type

Titanium

WUZ2/4 type

Selection

Application For seawater intake, circulation, fish and shellfish breeding farms, processing
plant, various wastewaterᶃ Uses titanium for the metal part which contacts water and plastic in thepump to achieve corrosion proof, light weight and easy-to-handle features.
ᶄ Glass fiber reinforced plastic is used in plastic parts which require strength,
such as the impeller and casing.
ᶅ Vortex type and excellent in the ability to pass foreign objects.
ᶆ Equipped with a motor with built-in auto-cut having a large torque toprevent burn damage.
ᶇ Strainers with output of 0.75kW or less are quick detachable type for easy
maintenance.
ᶈ Japan Public Buildings Association compliant. (50mm-bore products)
ᶉ Starting/stopping water levels are adjustable in L and LN types.
ᶊ Improved strainer strength. (compared to our conventional models)ɹ
Types
Operation method

Capacity (m3/min)Ability to pass foreign objects
Model

OutputDiameter of foreign objects(sphere) (mm)Non-automatic

WUZ2/4 type0.25kW or less

14

Automatic

WUZ2/4-L type0.4, 0.75kW

20

Auto alternate

WUZ2/4-LN type

1.5kW

35

2.2kW or above

40

Total pump head (m)FeaturesTotal pump head (m)For Seawater and Wastewater, 2 poles

Capacity (m3/min)

WUZ2/4 type

WUZ2/4-L type

WUZ2/4-LN type

YUK2 type

Selection

Application For drainage of wastewater, septic tank sump, dirty sump and spring water

Featuresᶃ Semi-open stainless steel impeller prevents foreign objects from clogging.
ᶄ Significantly improved ability to pass foreign objects.ɹᶅ Safety device (auto-cut) activates at overload and during restraint
operation and prevents motor burnout.
ᶆ Can be combined with a plastic pedestal support (special accessory).
Types

Operation method

Total pump head (m)For Wastewater, 2 poles

Ability to pass foreign objects
Model

Bore (mm)Diameter of foreign objects(sphere) (mm)YUK2 type40

20

Automatic

YUK2-L type50

20

Auto alternate

YUK2-LN type

Capacity (m3/min)

Total pump head (m)Non-automatic

Capacity (m3/min)
YUK2 type

YUK2-L type

YUK2-LN type

SU4 type

Selection

Application For drainage of wastewater, septic tank sump, rain water and spring watersump
Featuresᶃ Closed impeller made of Bronzeˎ provides excellent pumping
performance without startup failures due to rusted impellers.
ᶄ Equipped with a motor with built-in auto-cut to prevent motor burnout.
ᶅ Attached with a special strainer to prevent suction of foreign objects.
ᶆ The flange is attached with a pedestal support to avoid excess load to be
applied to the pump.
ᶇ Two types available: floor mount and pedestal support type for easy
maintenance and inspection.
ᶈ Some models with output of 3.7kW or less are available with a float switch(automatic, auto alternate built-in).

Total pump head (m)For Wastewater, 2 polesˎ 5.5kW and 7.5kW model adopt Stainless cast steel (304)

Capacity (m3/min)

Types
Model

Non-automatic

SU4 type

Automatic

SU4-L type

Auto alternate

SU4-LN type

SU4 type

SU4-L type

Total pump head (m)Operation method

SU4-LN type

SU4 type(Pedestal support type)

Capacity (m3/min)

Reinforced glass fiber resin

WUO(4) type

Selection

Application For drainage of sewage and wastewater, and for drainage of septic tank sumpFeaturesᶃ Light weight and easy-to-handle submersible sewage pump.
ᶄ Stainless steel made frame motor and plastic parts increase operating life.
ᶅ Uses reinforced glass fiber resin for the impeller and casing, and equippedwith a motor with built-in auto-cut having a large starting torque forstable operation.
ᶆ Vortex type and excellent performance to pass foreign objects.

Total pump head (m)For Sewage, 2 polesᶇ Can be combined with a plastic pedestal support (special accessory).
ᶈ Starting/stopping water levels are adjustable in L and LN types.

Types

Capacity (m3/min)Ability to pass foreign objects
Model

Bore (mm)Diameter of foreign objects(sphere) (mm)35Non-automatic

WUO(4) type40

Automatic

WUO(4)-L type

50

35

Auto alternate

WUO(4)-LN type65

35 (40 for 2.2kW or above)80

40

Total pump head (m)Operation method

Capacity (m3/min)
WUO(4) type

WUO(4)-L type

WUO(4)-LN type

ZU3/4 ZUJ/4 type

Selection

Application Sewage and wastewater with solids
Featuresᶃ The S-shaped impellers provides excellent ability to pass foreignob jects.
ᶄ The pump is free from forming air pocket behind impeller.
ᶅ Equipped with a motor with built-in auto-cut to prevent motor burnout.
ᶆ ZUJ type is equipped with a pedestal support for easy maintenance andnspection.
ᶇ Some models with output of 3.7kW or less are available with a float switch(automatic, auto alternate built-in).

Total pump head (m)For Sewage, 2 poles

Types
Model

Operation method
Non-automatic

ZU3 type, ZUJ type (with pedestal support), ZU4 type

Automatic

ZU3-L type, ZUJ-L type (with pedestal support)

Auto alternate

ZU3-LN type, ZUJ-LN type (with pedestal support)

Capacity (m3/min)Ability to pass foreign objects
Diameter of foreign objects (sphere) (mm) Size of cloth (mm)50

35200×20065

35

300×30080

40

300×450

ZU4 type (Pedestal support type)
Floor mount is also available.

ZU3 type

ZU3-L type

ZU3-LN type

-L and -LN types are also available with a float switch.

ZUJ type˞

Total pump head (m)Bore (mm)Capacity (m3/min)

High-efficiency non-clog impeller

BUW type

Selection

Application For drainage of sewage and wastewater, discharge of sump from buildings,
factories, hospitals, apartments, etc.
Featuresᶃ The ability to pass foreign objects is 100% of the bore size (candischarge spherical solids with a diameter which equals to the bore size).
ᶄ The closed-type, high-efficiency, non-clog impeller (patent pending)and our original casing structure provide high pumping performancewith high efficiency.
ᶅ Uses highly corrosion proof stainless steel for the impeller.

Total pump head (m)For Sewage, 4 polesᶆ Equipped with a motor with built-in auto-cut to prevent motor burnout.
ᶇ Two types available: floor mount and pedestal support type for easy
maintenance and inspection.

Types

Capacity (m3/min)Ability to pass foreign object
Bore (mm)Diameter of foreign objects(sphere) (mm)

65

65

80

80

Total pump head (m)Non-automaticHigh efficiency & 100% size of the bore object passage

Floor mountPedestal support type

Capacity (m3/min)

Impeller

BU4 type

Selection

Application For discharge of sewage and wastewater
Featuresᶃ The closed-type non-clog impeller and our original casing structure(patented) provide high pumping performance.
ᶄ Equipped with a motor with built-in auto-cut (7.5kW or less) to prevent
motor burnout.Motor with output of 11kW or above can detect abnormal
temperature rise of the motor coil as an external signal.
ᶅ Two types available: floor mount and pedestal support type for easy
maintenance and inspection.

Total pump head (m)For Sewage, 4 polesᶆ Some models with output of 3.7kW or less are available with a float
switch (automatic, auto alternate built-in).
ᶇ High pressure model BU4-H type is also available.

Operation method

Capacity (m3/min)Ability to pass foreign object
Model

Bore (mm)Diameter offoreign objects(sphere) (mm)Size of cloth(mm)
300×300

Non-automatic

BU4 type

50

35

Automatic

BU4-L type65

35

300×450

Auto alternate

BU4-LN type

80

53

100

53

150

53

1.5kW : 300×450
2.2·3.7kW : 300×900
5.5~22kW : 200×300
ɹɹɹɹɹɹɹɹ˞

With restart.

Total pump head (m)TypesCapacity (m3/min)
BU4 type

BU4-L type

BU4-LN type

BU4 type(Pedestal support type)Vortex with cutter

AU4 type

Selection

Application For drainage from sewage tanks, kitchens, and drainage of other sewage
and wastewater
Featuresᶃ The ceramic-coated cutter piece help maintain long service life withexcellent performance.
ᶄ Original suction configuration (patented) and casing structure.
ᶅ Equipped with a motor with built-in auto-cut to prevent motor burnout.
ᶆ Two types available: floor mount and pedestal support type for easy
maintenance and inspection.

Total pump head (m)For Sewage, 4 polesᶇ Some models with output of 3.7kW or less are available with a float
switch (automatic, auto alternate built-in).

Operation
methodAbility to pass foreign objects
Model

Non-automatic AU4 type
Automatic

AU4-L type

Auto alternate AU4-LN type

Bore
Solid object(mm) (sphere diameter (mm))
50

17

65

17

80

AU4 type

AU4-L type0.75kW: Panty hose
1.5kW: Towel (300x450mm)
2.2kW and above:
Towel (300x900mm)

24 (2.2kW or less)

In addition to the above,
cotton gloves,
packaging tapes,
plastic bags, etc.
can also be cut.

26 (3.7kW or above)

100

26

AU4-LN type

Capacity (m3/min)
Cuttable cloth

Total pump head (m)Types

AU4 type(Pedestal support type)

Capacity (m3/min)

Vortex type

VU4 type

Selection

Application For discharge of sewage and wastewaterᶃ Excellent ability to pass foreign objects without entangling. (Candischarge spherical solids with a diameter which equals to the bore size.)ᶄ Our original casing structure (patented) provides excellent pumping
performance.
ᶅ Equipped with a motor with built-in auto-cut (7.5kW or less) to prevent
motor burnout.
ᶆ Motor with output of 11kW or above can detect abnormal temperaturerise of the motor coil as an external signal.
ᶇ Two types available: floor mount and pedestal support type for easy
maintenance and inspection.
Some models with output of 3.7kW or less are available with a float
switch (automatic, auto alternate built-in).
Types

Ability to pass foreign objects

Automatic

VU4-L type

50

Solid
Spherediameter(mm)
50

Auto alternate

VU4-LN type

65

65

80

80

100

100

Operation
method

Model

Bore
(mm)

Non-automatic VU4 type

VU4 type
Special specification

VU4-L type
Stainless steel impeller

Capacity (m3/min)
Cloth

Packagingtape

CottonglovesPanty
hose

OK withrestart for1.5kW orless

OK withrestart for2.2kW orless and
60Hz, 3.7kW

400mm orsmaller
OK withrestart for
0.75kW and
50Hz, 1.5kW

VU4-LN type

VU4 type(Pedestal support type)

Total pump head (m)FeaturesTotal pump head (m)For Sewage, 4 poles

Capacity (m3/min)Stainless Steel, Vortex type

VUS type

Selection

For Sewage, 4 poles

FeaturesTotal pump head (m)Application For discharge of sewage and wastewater from buildings, factories, hospitals,
apartments, etc.
ᶃ All stainless steel structure (pump, motor, pedestal support) provides corrosion
proof and long life.
ᶄ Excellent ability to pass foreign objects (can discharge spherical solids with adiameter which equals to the bore size) and superior pumping performance.
ᶅ Vortex type increases resistant against wearing due to sand etc., and revents
startup failure due to rusted impellers.
ᶆ Equipped with a motor with built-in auto-cut to prevent motor burnout.
ᶇ Two types available: floor mount and pedestal support type for easy
maintenance and inspection.
Types

Ability to pass foreign objects

VUS type

Automatic

VUS-L type

50

Auto alternate

VUS-LN type

65

65

Model

VUS type

Bore
(mm)

80

80

100

100

VUS-L type

Capacity (m3/min)

Cloth
Packagingtape

CottonglovesPanty
hose

OK withrestart for1.5kW orless

OK withrestart for2.2kW orless and
60Hz, 3.7kW

400mm orsmaller
OK withrestart for
0.75kW and
50Hz, 1.5kW

VUS-LN type

Total pump head (m)Non-automatic

Solid
Spherediameter(mm)
50

Operation method

VUS type(Pedestal support type)
Note: Guide pipes are not included.

Special specification

With flood detector

Capacity (m3/min)Please inquire for details.

High-efficiency non-clog impeller

BUM type

Selection

Application Submersible sump pumps for manholes installed as relay pumps for sewage
main piping and sewage treatment facilities such as for sewage relay anddrainage of sump from agricultural communities.
Featuresᶃ The ability to pass foreign objects is 100% of the bore size (can discharge
spherical solids with a diameter which equals to the bore size).
ᶄ The closed-type, high-efficiency, non-clog impeller (patent pending) and
our original casing structure provide high pumping performance withhigh efficiency.

Total pump head (m)For Manholes, 4 polesᶅ Combination of a prewhirl tank and a pump with bell mouth allows
operation up to low residual water level, while discharging suspended
particles and suppressing scum and bad smell.
ᶆ Control panel for manhole pumps and necessary parts are also available
as special accessories.

Capacity (m3/min)Ability to pass foreign objects
100% of the bore (sphere diameter in mm)

Bore
(mm)

Total pump head (m)Pump/manhole combination table
Pump

Manhole (size)
Type 1
φ900

Type 2
φ1200

Type 3
φ1500

Type 4φ1800

65
80Special specification

With flood detector

Pedestal support type

Impeller

Note: Guide pipes are not included.

Capacity (m3/min)Stainless steel made vortex type

VUM type

Selection

For Manhole, 4 poles
Total pump head (m)Application Submersible sump pumps for manholes installed as relay pumps for sewage
main piping and sewage treatment facilities such as for sewage relay anddrainage of sump from agricultural communities.
ᶃ Stainless steel made precision casting (SCS) is used in the pump and pedestal
support, which gives features of high corrosion proof and durable with longservice life.
ᶄ The sump pump is a vortex type with non-blocking feature, with a 4-pole
motor with a large starting torque.
(Can discharge spherical solids with a diameter which equals to the bore size.)ᶅ Combination of a prewhirl tank and a pump with bell mouth allows operation
up to low residual water level, while discharging suspended particles andsuppressing scum and bad smell.

Features

Stainless steel sump pump, stainless steel bell mouth, stainlesssteel pedestal support, stainless steel direct coupling straight
pipe, stainless steel chain

Standard accessories

Capacity (m3/min)Ability to pass foreign objects

Total pump head (m)100% of the bore (sphere diameter in mm)

Pump/manhole combination table
Pump
Bore
(mm)

Manhole (size)
Type 1
φ900

Type 2
φ1200

Type 3
φ1500

Type 4
φ1800

50
65

(3.7kW or above)

80
100
Special specification

Note: Guide pipes are not included.

With flood detector

Capacity (m3/min)

Separately sold parts
Control panel for ECM2 type manhole pump

Water level gauge (throw-in)

Prewhirl tankWith weight (6m SUS chain)

FeaturesEasy installation of pole mounting. (Outdoor specification with lock)Supports throw-in water level gauges and float switches in standard models.
Standard models also support voltmeters, ammeters and earth leakage
circuit breakers as well as counter of accumulated operation time andnumber, and phase advance capacitor.
Equipped with an abnormal water level detector function.
Equipped with a connection terminal for in-house power generation in caseof power outage.
Control panels with automatic alarming device are available as a variation.
(Standard models have an installation space.)

Water level gauge

WeightPrewhirltank

Specifications
ECM2-A type

ECM2-P type

Alternate

Alternate/Parallel

Rated capacity

0.4 - 7.5kW

0.4 - 7.5kW×2

Panel display

Model
Operation method

Instruments

Voltmeter, ammeter, operation counter, operation timer(instruments other than the voltmeter are separate)

Indicator light

Operation, stop, fault (separate)
Manhole water level (HH, H, L level), abnormal high water level

External
dimensions(max.)

1400×700×350mm (length × width × depth)

Applicablepole forinstallation

φ170 - 400mm
Installation metal fitting for φ170 - 230mm
Installation metal fitting for φ230 - 300mm
Installation metal fitting for φ300 - 400mm

Sump check valve
Nylon coated valve(Please inquire for stainless steel valves.)

Check valve

Float switch (EHF5-S type)For backup

With automatic alarming device
The appearance may be altered.

Ball valve (stainless steel)
Please inquire for details.

Special accessories
Hose Coupling (bamboo shoot shaped) Plastic

Pedestal Support Plastic

For WUP4 type

For WUP4, WUO4, YUK2 type
Bore mm

Model

40
50

Name

Bore mm
32

32A Hose coupling

40

40A Hose coupling

50

50A Hose coupling

Note

UJP-40-5K

65
80

UJP-50-5K

0.75kW or less

UJP-50-7K

1.5kW

UJP-65-7K

1.5kW

UJP-65B-7K

2.2, 3.7kW

UJP-80-7K

Includes a rope for hanging the pump.

Float Switch

Attachable to 2 poles manual type wastewater pump
0.75kW or less
EHFR type [Low water level control space saving model](Example of combination with WUP type)

EHF5-1 type
(For seawater model is also available)

EHF5-4 type

Sump Check valve

Stainless Steel Pedestal Support

Nylon coatedInstall on a vertical pipeline.
JIS IOK thin flange
Operation pressure: 0.29MPa (3kgf/cm2) or lessControl Panel
ECD2 type(indoor)Type

ECDW type(outdoor)

Operation method

Individual

Alternate/Parallel

Rated capacity

0.15kW ~ 7.5kW

0.15kW ~ 7.5kW × 2

Rated voltage
Protectionfunction (˞1)

Display

ECDW3-P type

Power indicator light˓ (White)˓ (White)˓ (Red)˓ (Red) : No1, No2 Individual indication

Fault indicator light˓ (Orange)˓ (Orange) : No1, No2 Individual indication

Control panel specifications include standard
specifications and also special specifications areavailable.
Alternate/parallel type equips ELB as standard˓ (Orange) : For three phase 200V only˓ (Orange)

Pump selection indicator light
External
signal(no voltage)˓ (Orange)˓ (Red) : No1, No2

Ammeter˓ (Analog)˓ (Digital, with 3-digit display)

Operation

˓ (˞2)

˓ (Collective)Fault

˓ (˞3)

˓ (Collective)

Water level˓ (˞3)

˓˓˓

Alarm buzzer( ˞ 1 ) Detected by the microcomputer in the control panel. Phase failure and reverse phase are for three phase 200V only.
( ˞ 2 ) Auxiliary contact output of the magnet switch.
( ˞ 3 ) Output collectively as an alarm output.

Full water alarm panel

Sump Pump Defect Detector
Float switch fault, lock due to foreign
objects, no power transmission due
to tripped earth leakage breaker, andpump fault are identified anddisplayed by LED.

Sends out an alarm with a buzzer andlamp and also outputs a signal of no
external voltage at abnormal waterlevel (full water).

EFS type
EBA- 12 type

Phase failure, reverse phase, overcurrent protection,
magnet switch fault detection

Operation indicator light

Abnormal water pressure
indicator light

Control panel with a microcomputer for submersible
sump pumps ensures control and protection.

ECDD3-P type(outdoor with a pole)

Singlephase 100V : 0.15kW ~ 0.4kW Three phase 200V : 0.25kW ~ 7.5kW
Overcurrent protection,
magnet switch fault detection

Reverse phase indicator light

Control panels for indoor and outdoor are available forindividual operation, and control panels for indoor andoutdoor (with a pole) are available for auto
alternate/parallel operation.

ECDW3-P type(outdoor)

ON-OFF control by input from the float switch

Control method

ECD3-P type

ECD3-P type(indoor)Applicable pump
Submersible sump pump with a float
switch for three phase 200V

DUG2/DU24 /DUM2 type

Selection

Application For general civil engineering and construction works, and drainage from pits,
manholes, etc.
Features ᶃ Uses semi-open impeller to avoid clogging by foreign objects.
ᶄ Small size and light weight enable easy handling, maintenance and inspection.
ᶅ Equipped with a motor with built-in auto-cut to prevent motor burnout.

Total pump head (m)For Construction

Total pump head (m)Capacity (m3/min)

Capacity (m3/min)
DUG2 type

DU4 type

DUM2 type

DU2 type

LU2 type

Selection

For Residual water/

Featuresᶃ Residual water sump pump with excellent drainage performance, with theminimum pumping water level in millimeter order. (The minimum pumping waterlevel varies depending on the bottom surface conditions. 1 - 3mm)
ᶄ In-pump air separation mechanism prevents air lock and improves re-pumping
performance.
ᶅ Uses aluminum frame motor to realize a light and compact design which is easy
to carry. (Mass: 8.0kg)

Total pump head (m)Application For drainage of bottom water from water receiving tank cleaning and residual waterof various pits, pools, etc.

ᶆ Equipped with a small powerful motor with built-in auto-cut to prevent motor
burnout.

Capacity (m3/min)

LU2 type* DUG2/DU42 /DUM2 type and LU2 type are portable submersible sump pump for construction and submersible sump pump for residual water. Do not use themin long continuous operation or under an installation condition where the pump is completely under water at all times. The pump may break in short time.

Submersible Sump Pump Outline Dimension (The diagrams are for reference only) Please request a delivery
specification when planning installation.
Pedestal support type

Model description Example
Power ̨4JOHMF QIBTF
supply ̩ PS OP MFUUFS 5ISFF QIBTF

Pump model
Bore (mm)Frequency (5:50Hz 6:60Hz)
Motor output (kW)

Floor mountNon-automatic

Non-automatic

Reinforced glass fiber resin
Automatic -L
Auto alternate -LN

Operation method
No letter
L
LN

Reinforced glass fiber resin
Automatic -L: Non-automatic: Automatic: Auto alternate built-in

Auto alternate -LN

Bore

Model

WUO type

M

WUO-L(N) type

A

Floor mount
Bore

Model

Cast iron
Automatic -L

WUP3 type
WUP4 type

M
M

WUP3-L(N) type
WUP4-L(N) type

A
A

WUZ2·3 type
WUZ2·4M
Bore

YUK2 type

M

YUK2-L(N) typeA
WUZ2·3-L(N) type
WUZ2·4-L(N)A
SU4 type

M

SU4-L(N) typeA
WUO(3) type
WUO(4)M
ZU3 type

M

WUO(4)-L(N)WUO3-L(N) type
type

A

ZU3-L(N) typeA

M : Manual operation
A : Automatic (Alternate) operation

M : Manual operation
A : Automatic (Alternate) operation
For model ZU4-80-5.5/7.5, refer to P.13.

Model

Auto alternate -LN

Submersible Sump Pump Outline Dimension (The diagrams are for reference only) Please request a delivery
specification when planning installation.
Pedestal support typeNon-automatic

Cast iron
Automatic -L

Bore

Model

Auto alternate -LN

BU4 type

M

Bore

Model

SU4 type

M

BU4-H type

M
SU4-L(N) type

A
BU4-L(N) typeA
ZUJ typeM

BUW typeM

ZUJ-L(N) typeA

M : Manual operation
A : Automatic (Alternate) operation

U2: (Pump activation water level)
U5: (Parallel operation activation)

For model ZU4-80-5.5/7.5, refer to P.14.
VU4 type

Floor mountNon-automatic

M

Automatic -L

Auto alternate -LN

VU4-L(N) typeA

Stainless steel
Cast iron

Bore
Bore

Model

Model

ZU4 typeM

VUS typeM
AU4 type

M

VUS-L(N) type

AU4-L(N) type

AA

M : Manual operation
A : Automatic (Alternate) operation

U2: (Pump activation water level)
U5: (Parallel operation activation)

M : Manual operation
A : Automatic (Alternate) operation

U2: (Pump activation water level)
U5: (Parallel operation activation)Pedestal support type

Bore

Model

Bore

Model

Auto alternate -LN

Automatic -L

Non-automatic

VU4 type

M

Cast iron
Bore

Model

ZU4 type

M
VU4-L(N) type

A

AU4 type

M

Stainless steel

VUS type

AU4-L(N) type

M

A

VUS-L(N) type

A

BU4 typeM
M : Manual operation
A : Automatic (Alternate) operation

Pedestal support typeW2

For manholes

PH

TL

BU4-H type

U

M

Bore
BU4-L(N) type

A

BUM type

BUW typeM

U2: (Pump activation water level)
U5: (Parallel operation activation)

M : Manual operation
A : Automatic (Alternate) operation

For construction

VUM type

445

356
229

DUM2 type

196

LU2 type292

DU4 type326

DUG2 type

238

223

Model

To reduce the environmental burden and protect theenvironment, we at KAWAMOTO PUMP will keep on
carrying out activities as a united force under our slogan"Comfort Earth", as a company involved with thevaluable resource that is "water".

Kawamoto products with this mark are products withexcellent energy-saving and environmentally friendly
features.

Always read the manual thoroughly and fully comprehend the contents for safe operation before starting use.

for using products safely and for preventing personal injuries or physical damage are given
Important Safety Precautions Precautionsin the manual.

• Matters falling under the following may not be covered by the warranty: uses out of the specified scope of

•
•
•

•
•
•
•
•
•
•
•
•

application, failure to comply with precautions, improper repairs and alterations, matters arising from natural
disasters, matters arising from the installation environment (improper power source, foreign objects, sandetc.), non-compliance with laws and regulations or standards pertaining thereto, accidental or intentional
damage or injury, replacement of consumable parts, defects due to resale, etc.
Do not use the product for applications out of the product specifications. Doing so may cause electric shock,fire, water leakage, etc.
Have spare equipment ready when using pumps for equipment for living things (fish farms, fish tanks, aquariums, etc.) or critical equipment.
Pump failure may cause lack of oxygen and water quality deterioration, and may affect the lives of the living
things.
When using pumps for equipment for living things (fish farms, fish tanks, aquariums, etc.), do not install thepump in the tank where the living things are put into.The current leakage or sealing liquid leak from themechanical seal may cause the death of the living things.
If used to transport food-related items, give due consideration to the materials used. Contamination by foreign
objects may occur.
Avoid using for living things which disagrees with copper alloy. It may affect the lives of the living things.
Select a product which is appropriate for your application. Inappropriate use of products may cause
accidents.
Conduct construction in accordance with the applicable laws and regulations (the Technical Standards ofElectric Installation, interior wiring regulation, Building Standards Act, Water Supply Law, etc.).Not only does it
violate the laws and regulations, but it also may cause injuries due to electric shock, fire, falling and tippingover.
Do not use in places where people are assumed to get in contact with the product (baths, pools, lakes, etc.).
Electric leak may occur and cause electric shock.
Depending on the equipment, attach a filter etc. appropriate for your application on the discharge side before
use, perform thorough flushing to check that there is no contamination.Cutting oil, rubber mold releasing
agent, foreign objects etc. from the manufacturing line and cutting oil, foreign objects etc.
from the pipeline may contaminate the liquid which is to be handled.
Do not operate pumps with a specification of 50Hz at 60Hz.It may cause damage due to overpressure or burndamage of motors etc. due to overload.Do not operate pumps with a specification of 60Hz at 50Hz.Pump
performance may be reduced.
Only repair technicians may disassemble, repair, modify the product or replace cables.Defects may cause
failure, damage, electrification or fire.
It is recommended that both periodic and daily inspections be performed in order to ensure that the pump will
operate reliably for as long as possible.Failure to perform inspections may lead to pump failure, accidents
etc.For periodic inspections, please consult your distributer or our nearest sales office.

Specifications/configurations may be altered as a result of improvements and such. Unauthorized reproduction of this document is prohibited.

Distributor

Kawamoto Pump MFG. CO., LTD.
Overseas Sales and Marketing Section
11-39, Osu 4-Chome, Naka-ku, Nagoya
460-8650, JAPANTEL: +81-52-251-7173 FAX: +81-52-747-5500
E-mail: kawamotobo@kawamoto-oms.com
https://www.kawamoto-global.com/
For any question about pumps, please contact your nearest distributor

Name

Submersible Sump Pump

3710 Y Ⓔ