EBARA Dominator DWU Operating and maintenance manual

Model DWU, DWXU
Dominator
TM
EBARA Fluid Handling EBARA International Corporation
Operating Instructions, Installation & Maintenance Manual
Submersible Sewage Pump

Thank you for purchasing this Ebara Stainless Steel Pump. We
hope you are pleased with your purchase and that our pumps will
provide you with long service life and exceptional performance.
To ensure satisfactory service life, there are several considerations
regarding proper installation, operation and power source. Please
review the recommendations outlined within the installation and
operation manual.
Please contact your supplier (supplying dealer or contractor) if
service is necessary or if you have any questions or need further
assistance.
Please retain the following information for your records and to
help expedite service:
Purchase Date: ____________________________
Purchased From: ____________________________
____________________________
Serial No: ____________________________
(Located on the pump nameplate)
Note: For assistance locating the serial number and name plate, please
refer to page 4 of your owner’s manual.
EBARA Fluid Handling www.pumpsebara.com
1651 Cedar Line Drive • Rock Hill, SC 29730 • (t) 803 327 5005 • (f) 803 327 5097

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(t) 803 327-5005 • (f) 803 327-5097
DWU, DWXU
Contents
Section Page
Manufacturer Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pump Identification Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Safety Information/Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Electrical Information (Single phase) . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Wiring Diagrams (Single phase) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Electrical Information (Three phase) . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Wiring Diagrams (Three phase) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Typical Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Installation Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Installation Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Float Switch Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Sectional Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Assembly and Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Manufacturer Data
Manufacturer Data
EBARA International Corporation
1651 Cedar Line Drive
Rock Hill, SC 29730
File #: 105970
Note: All Models are CSA listed except 3HP Dominator.

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(t) 803 327-5005 • (f) 803 327-5097
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Pump Identification Data
Pump Data
Description: Submersible Sewage Pump
Model: DWU, DWXU
Year of manufacture:
see name plate on the pump (see nameplate
illustration below)
Note: This label shows all of the
electrical data required for proper
installation.
CAUTION
Call an electrician when in doubt. Improper installation can result in harm to people
and/or damage to equipment.

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(t) 803 327-5005 • (f) 803 327-5097
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Safety Information and Introduction
WARNING
Before handling this pump, always disconnect
the power first.
This pump should only be serviced by a qualified person or a
factory trained person.
CAUTION
This instruction manual includes necessary items for installation, operation
and
maintenance.
Read this manual carefully to ensure correct installation,
operation and maintenance.
Be sure to keep this instruction manual on hand for future reference.
EBARA’s Dominator sewage pumps are designed for reliable pumping of waste
water with suspended
solids up to 2" in diameter. Maximum fluid temperature
40°C, 104°F
(possible intermittent duty to 60°C,140°F when totally submersed).
Stainless steel construction is ideal for residential, commercial, and industrial
applications. Dual seals are a standard feature enhancing the rugged, high
service factor motor design.
The EBARA Dominator is superior in dependability and efficiency. High quality
components are stronger, dimensionally consistent, and lighter weight compared
to conventional cast iron parts.
EBARA stainless steel is engineered for the
professional and built for lasting performance and value.
Electrical Installation
Electrical service for any sump pump installation must be grounded and separately
fused or breakered directly from the entrance box with a single grounding type
receptacle. You should never touch a sump pump or discharge piping while the
pump is connected to electrical power and water is present. The pump should
be disconnected from the electrical source before handling in all cases.
Discharge Piping Installation
To assure the maximum performance from your pump, the discharge pipe size
and piping fittings should not be smaller than the discharge port of the pump.
Smaller pipe will add to friction losses and reduce the capacity of the pump.
CAUTION
Call an electrician when in doubt. Improper installation can result in harm to people
and/or damage to equipment.

Electrical information – Single Phase
• Use a separate 15 amp circuit breaker or 15 amp fuse block with the pump.
•Do not use an extension cord with the pump.
•Do not cut off the ground pin or use an adapter fitting.
•Do not work on the pump or switch until any or all power cords are
unplugged.
• Failure to follow these guidelines my cause severe damage to the pump and
will void warranty.
IMPORTANT INSTRUCTIONS BEFORE INSTALLATION
Failure to follow these instructions may cause serious bodily injury and/or
property damage.
• Pumps are 115 V, 60Hz or 230V 60Hz.
• Please check the voltage rating on the pump nameplate prior to installation.
WARNING
Risk of electric shock
This pump is supplied with a grounding conductor or a grounding-
type attachment plug. To reduce the risk of electric shock, be
certain that it is connected only to a properly grounded, grounding-
type receptacle.
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(t) 803 327-5005 • (f) 803 327-5097
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Safety Information and Introduction (continued)
Normally accepted materials are galvanized pipe, rigid plastic pipe or
acceptable
flexible pipe or hose.
Where the discharge pipe is long, a check valve is often
employed to prevent the water from flowing back into the sump when the pump
turns off. If the discharge is directed into a sanitary sewer, a suitable anti-siphon
device or a free flow check valve should be inserted in the line to prevent back-
flow into the pit.
Pump Installation
When the sump, electrical and discharge plumbing installation is complete and
ready for the pump, clean all solid debris from the pit. Complete the plumbing
connection to the pump and then plug the pump into the electrical outlet. A few
extra minutes to test the sump pump installation are now in order.
Fill the sump with water, note the turn on and turn off level of the pump, and the
pumping cycle. This will allow you to calculate the approximate discharge flow of
the pump system. If everything is operating properly, install the sump cover.

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(t) 803 327-5005 • (f) 803 327-5097
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Electrical information – Single Phase (continued)
1. Before installing or servicing your pump, BE CERTAIN pump power source is
disconnected.
2. Installation and electrical wiring must adhere to state and local codes. Check
appropriate community agencies, or contact local electrical and pump
professionals.
3. CALL AN ELECTRICIAN WHEN IN DOUBT. Pump should be connected to
a separate 15 amp circuit breaker or 15 amp fuse block. Plugging into existing
outlets may cause low voltage at motor, causing blown fuses, tripping of
motor overload, or burned out motor.
4. Do not connect pump to a power supply until permanently grounded. For
maximum safety, ground pump to a circuit equipped with a ground fault
interrupter device.
5. Voltage of power supply must match the voltage of the pump.
6. Before installing pump, clear sump basin of any water, debris, or sediment.
WARNING!
Sump basin must be vented in accordance with local plumbing codes.
EBARA DOMINATORS are not designed for and CANNOT be installed in
locations classified as hazardous in the National Electric Code,
ANSI/NFPA 70.

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(t) 803 327-5005 • (f) 803 327-5097
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Wiring Diagram for Automatic Pumps (Single Phase)
• Output 1/2to 1 HP (0.4kw to 0.75kw)
115V
230V
• Output 11/2HP (1.1kw)
230V

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(t) 803 327-5005 • (f) 803 327-5097
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Wiring Diagram for Manual Pumps (Single Phase)
• Output 1/2to 1 HP (0.4kw to 0.75kw)
115V
• Output 1/2to 1 HP (0.4kw to 0.75kw)
230V
• Output 2HP (1.5kw)
230V
• Output 11/2HP (1.1kw)
230V

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(t) 803 327-5005 • (f) 803 327-5097
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Electrical Information – Three Phase
WARNING
Check that the power is locked off and disconnected before working
on pump. All electric work should be performed by a qualified electri-
cian and all national and local electrical codes must be observed.
(2) Cable
a) Never let the end of the cable contact water.
b) If the cable is extended, do not immerse the splice in water.
c) Fasten the cable to the discharge piping with tape or vinyl strips.
d) Install the cable so that it will not overheat. Overheating is caused by coiling
the cable and exposing it to direct sunlight.
(3) Grounding
As shown in Fig. 5 ground the green/yellow wire (label E). Under no
circumstances should the green/yellow wire be connected to the power supply.
(4) Use short circuit breakers to prevent danger of electrical shock.
NOTE:
Use with approved motor control that matches motor input in full load amperes.
Utiliser un d é marreur approuv é convenant au courant á pleine charge du moteur.
Figure 4
MOTOR WIRING DIAGRAM
U phase: black
V phase: red
W phase: white
E phase: green/yellow
ground
plate
Power Lead
Protector Cable*
*Protection Cable must be
connected or warranty will be void.
(1) Wiring
a) Wire as indicated in Fig. 4
b) Loose connections will stop the pump. Make sure all electrical connections
are secure.