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M o d e l s 3 U / 3 U B End Suction Centrifugal
EBARA Fluid Handling
EBARA International Corporation
Operating Instructions, Installation & Maintenance Manual
M o d e l s 3 U / 3 U B
EBARA End Suction Centrifugal
3U / 3UB
Operating, Installation, and Maintenance
EBARA Fluid Handling
www.pumpsebara.com
3
(t) 803 327-5005 (f) 803 327-5097
rev. 01/07
IMPORTANT SAFETY INSTRUCTIONS
Rules for Safe Installation and Operation
Installation
Contents
Section
Page
Safety Specifications and Installation
3
3U / 3UB Selection Chart
5
3U / 3UB Specifications
6
3U / 3UB Type 1 Sectional View and Parts List
7
3U(B) 65 Type 3 Sectional View and Parts List
8
Installation Instructions
9
Maintenance and Service
10
3U / 3UB Assembly 3HP - 15HP
11
3U / 3UB Assembly 20HP - 30HP
12
Troubleshooting Checklist and Maintenance Information
13
1.
Read these rules and instructions carefully. Failure to follow them could cause serious bodily injury and/or property damage.
2.
Check your local codes before installing. You must comply with their rules
3.
For maximum safety, this product should be connected to a grounded circuit equipped with a ground fault interrupter device.
4.
Before installing this product, have the electrical circuit checked by an electrician to make sure it is properly grounded.
5.
Before installing or servicing your pump, BE CERTAIN pump power source is disconnected.
6.
Make sure the line voltage and frequency of the electrical current supply agrees with the motor wiring. If motor is dual voltage
type, BE SURE it is wired correctly for your power supply.
7.
Complete pump and piping system MUST be protected against below freezing temperature. Failure to do so could cause severe
damage and voids the Warranty.
8.
Avoid system pressures that may exceed one and a half times the operating point selected from the pump performance curve.
9.
Do not run your pump dry. If it is, there will be damage to the pump seal.
PACKAGE CONTENTS
1.
Be sure all parts have been furnished and that nothing has been damaged in shipment.
2.
The catalog lists all parts included with package. A packing list packed with pump, also lists contents.
3.
OPEN PACKAGES AND MAKE THIS CHECK BEFORE GOING ON JOB.
PIPING Pipes must line up and not be forced into position by unions. Piping should be independently supported near the
pump so that no strain will be placed on the pump casing. Where any noise is objectionable, pump should be insulated from
the piping with rubber connections. Always keep pipe size as large as possible and use a minimum of fittings to reduce
friction losses.
SUCTION PIPING Suction pipe should be direct and as short as possible. It should be at least one size larger than suction
inlet tapping and should have a minimum of elbows and fittings (5 to 6 pipe diameters of straight pipe before inlet is recommended).
The piping should be laid out so that it slopes upward to pump without dips or high points so that air pockets are eliminated.
The highest point in the suction piping should be the pump inlet except where liquid flows to the pump inlet under pressure.
The suction pipe must be tight and free of air leaks or pump will not operate properly.
WARNING EBARA End Suction Centrifugal
3U / 3UB
Operating, Installation, and Maintenance
EBARA Fluid Handling
www.pumpsebara.com
4
(t) 803 327-5005 (f) 803 327-5097
rev. 01/07
DISCHARGE PIPING Discharge piping should never be smaller than pump tapping and should preferably be one size
larger. A gate valve should always be installed in discharge line for throttling if capacity is not correct. To protect the pump
from water hammer and to prevent backflow, a check valve should be installed in the discharge line between the pump and
gate valve.
ELECTRICAL CONNECTIONS Be sure motor wiring is connected for voltage being used. Unit should be connected to a
separate circuit. A fused disconnect switch or circuit breaker must be used in this circuit. Wire of sufficient size should be
used to keep voltage drop to a maximum of 5%.
Single phase motors have built-in overload protection. Flexible metallic conduit should be used to protect the motor leads.
PRIMING The pump must be primed before starting. The pump casing and suction piping must be filled with water before
starting motor. When water is poured into pump to prime, remove all air before starting motor.
STARTING When the pump is up to operating speed, open the discharge valve to obtain desired capacity or pressure. Do
not allow the pump to run for long periods with the discharge valve tightly closed. If the pump runs for an extended period of
time without liquid being discharged, the liquid in the pump case can get extremely hot.
ROTATION All single phase motors are single rotation and leave factory with proper rotation. Three phase motors should
be checked to ensure proper rotation
FREEZING Care should be taken to prevent the pump from freezing during cold weather. It may be necessary, when there
is any possibility of this, to drain the pump casing when not in operation. Drain by removing the pipe plug in the bottom of the
casing.
ROTARY SEAL PRO STEEL pumps are fitted only with rotary seal. This seal is recommended for LIQUIDS free from abrasives.
LOCATION OF UNIT The pump should be installed as near to the liquid source as is practical so that the static suction
head (vertical distance from the center line of the pump to water level) is maximized, and so that a short, direct suction pipe
may be used. The capacity of a centrifugal pump is reduced when the unit is operated under a high suction lift. The piping
should be as free from turns and bends as possible, as elbows and fittings greatly increase friction loss. Place the unit so that
it is readily accessible for service and maintenance and on a solid foundation, which provides a rigid and vibration-free sup-
port. Protect the pump against flooding and excess moisture.
Rules for Safe Installation and Operation
(continued) EBARA End Suction Centrifugal
3U / 3UB
Operating, Installation, and Maintenance
EBARA Fluid Handling
www.pumpsebara.com
5
(t) 803 327-5005 (f) 803 327-5097
rev. 01/07
Model 3U / 3UB Selection chart
Synchronous Speed 3450 RPM
0.1 0.2 0.3 0.4 0.5 0.6 0.8 1.0 1.5
100M
80
60
50
40
30
20
15
10
Ft
300
200
150
100
80
60
50
20 30 40 50 60 80 100 150 200 300 400
600 700
M

3
/MIN
CAPACITY IN GPM
T
O
T
AL HEAD
*
Three phase motor only
50-160-
10HP
40-160-
7½HP
32-200-
7½HP
32-200-
7½HP
32-125-3HP
50-125
7½HP
40-125A-
5HP
50-125-1
10HP
40-125B-
5HP
*50-160-1
15HP
*40-200A-
15HP
40-160-1-
10HP
50-160-
10HP
32-160A-5HP
32-160B-5HP
32-200-1-10HP
*40-200B-15HP
40-160-
7½HP
1. 3U65-125-7.5HP
1
2. 3U65-125-10HP
2
3. 3U65-160-10HP
3
4. 3U65-160-15HP*
4
5. 3U65-160-20HP*
5
40
30
6. 3U65-160-25HP*
6
7. 3U65-200-20HP*
7
8. 3U65-200-25HP*
8
9. 3U65-200-30HP*
9 EBARA End Suction Centrifugal
3U / 3UB
Operating, Installation, and Maintenance
EBARA Fluid Handling
www.pumpsebara.com
6
(t) 803 327-5005 (f) 803 327-5097
rev. 01/07
Standard
Optional
Size
Suction
3U32 2'' ANSI Equivalent
Companion Flange kit
(150 lb. ANSI R.F. equivalent) 3U40 2
1
/
2
'' ANSI Equivalent
150 Lb. ANSI, Female NPT
3U50 2
1
/
2
'' ANSI Equivalent
3UB65 3'' ANSI Equivalent
Discharge
3U32 1
1
/
4
'' ANSI Equivalent
(150 lb. ANSI R.F. equivalent) 3U40 1
1
/
2
'' ANSI Equivalent
3U50 2'' ANSI Equivalent
3UB65 2
1
/
2
'' ANSI Equivalent
Range of HP
3U 3 HP to 15 HP
3UB 7
1
/
2
HP to 30 HP
Range of Performance
Capacity
13 to 750 GPM at 3450 RPM
Head
33 to 250 feet at 3450 RPM
Liquid handled
Type of liquid
Clean water
Temperature
212°F (100°C)
Max. 250°F (121°C) with optional
high temperature seal
Max. working pressure
230 PSI (15 Bar)
Materials
3U
3UB
Casing
304L Stainless Steel
304L Stainless Steel
Impeller (closed type)
304L Stainless Steel
Bronze
Stainless steel option for 3UB models
Shaft Sleeve
304L Stainless Steel
304L Stainless Steel
Bracket
Cast iron
Cast iron
Shaft Seal
Mechanical Seal Type 21
Seal Material
Carbon/Ceramic/Viton
Consult factory for additional
Carbon/Ceramic/Buna
optional seal availability
Hot water Carbon/Ni-Resist/Viton, 250°F (121°C) max.
Direction of Rotation
Clockwise when viewed from motor end
Motor
Type
NEMA JM, TC, TSC Frame
Speed
60 Hz, 3450 RPM (2 poles)
4 pole consult factory as noted
Bearing
Ball Bearing
Single Phase
TEFC 3 HP
ODP 3 HP to 10 HP
Three Phase
TEFC 3 HP to 30 HP
Explosion proof consult factory
ODP 3 HP to 30 HP
for availability
208-230/460V
Washdown duty consult factory
Motor Protection
Overload protection must be provided
for availability
Standard Accessories
Suction and Discharge Flange Gasket
Motor support
Specifications EBARA End Suction Centrifugal
3U / 3UB
Operating, Installation, and Maintenance
EBARA F