EBARA CSC Operating and maintenance manual

Horizontal Split Case Pump
Model CB
Operating Instructions, Installation & Maintenance Manual
EBARA Pumps Americas Corporation

1
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097
PM10U1
EBARA
CORPORATION
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IM0023 Rev.3
Thanks
Thanks for choosing the Horizontal centrifugal pump of Ebara. Thank you very much.
EBARA has fully taken into account the safety of its use in the production of this
product, but in order to prevent accidents from occurring due to improper operation,
please follow this instruction manual and use it correctly.
In addition, please keep this manual in good order to use it at all times.
To equipment construction management personnel.
Please give the instruction manual to the personnel who carry out the operation and
maintenance of the pump.
Table of contents
1 Warning Mark ...........................2
2 Receiving inspection ...................3
2.1)Pump and accessories ...............3
2.2)Nameplate ..........................3
2.3)Model Designation ..................3
3.Specification ..........................4
4.Installation ...........................6
4.1)Installation location ..............7
4.2)Pipeline ...........................8
4.3)Center Alignment ...................10
4.4)Electrical connection ..............14
5.Operation ..............................14
5.1)Preparations before startup ........15
5.2)During the operation ...............16
6 Maintenance
.............................17
6.1)
Daily Inspection ....................19
6.2)During operation ....................21
6.3)Long-term deactivation and storage ..22
6.4)Consumable parts ....................22
7 Troubleshooting .........................23
8 Construction ............................24
8.1) Sectional view .....................24
8.2) Attachment .........................24
9 Disassembly and Assembly ................25
10 Limited warranty terms .................26
11 Repair and maintenance .................27
Please submit this manual
to the operator.
IM0023 Rev.3(EN)

2
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097
EBARA Horizontal Split Case Pump CB Series
Operating, Installation, and Maintenance
- 2 -
PM10U-
EBARA
CORPORATION
1
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In this manual, the warnings record the information required for the safe operation of the
pump, and its purpose is to prevent harm and injury to you and others. In order to allow you
to grasp the degree of danger and urgency expressed by these warnings, this manual divides the
warnings into two levels, namely "Warning" and "Attention", according to the severity of the
events. Both levels of warnings contain important safety information that must be strictly
followed.
Warning terms Meaning
Warining
Dangerous situations may occur. Failure to follow the
instructions given here could result in death or serious injury.
Attention
Failure to follow the instructions given may result in minor
injury or damage to the pump.
Precautions Used to emphasize important information.
The specific description of the symbol in the figure.
Indicates what is strictly prohibited (i.e. actions that should
never be taken).
Specific actions that must never be taken are represented by
images or text, which may be inside or near the symbol circle.
Indicates what must be obeyed (that is, what must be done).
Specific actions that must be implemented are indicated by
pictures or text near this symbol.

3
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097
EBARA Horizontal Split Case Pump CB Series
Operating, Installation, and Maintenance
- 3 -
PM10U-
EBARA
CORPORATION
①
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As soon as you receive the water pump, please confirm the following immediately.
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(1)Make sure that no damage occurred during transport.
Check all nuts and bolts for looseness.
(2)Verify that all accessories have arrived(see Chapter 8 “Construction”)
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The nameplate is documented as the basic specifications of the pump. Confirm that the
nameplate is not the specification you ordered.
(1) Serial Number
(2) Pump model
(3) Flow rate
(4) Head
(5) Motor output kW
(6) Rated Speed
(7) Bearing model
Figure 1 Pump nameplate description
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Motor output (kW)
60 Hz
“G” for 25 bar, No marking means 16bar
Model
Discharge diameter(mm)
Suction diameter(mm)

4
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097
EBARA Horizontal Split Case Pump CB Series
Operating, Installation, and Maintenance
- 4 -
PM10U-
EBARA
CORPORATION
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Please confirm the nameplate according to the performance of the pump you purchased, such as
Head, Flow rate, and rotational speed. The table below gives the standard specifications. The
pressure unit used in this manual is the International Unit(SI), and its reference values is
in { }.
Warning
Do not place the pump outside or in a rainy place. The deterioration of
insulation is the cause of the electric shock fire.
If the working condition or power supply does not meet the specifications,
it cannot be used. Otherwise, it will cause damage to the water pump or
electric shock, leakage, fire and other accidents.
Be sure to implement ground operation. Failures and leakage of electricity
can cause electric shock if operated without grounding.
Considering the life of the machine, please choose a place that is well
ventilated, free from dust, corrosive or explosive gas, salt, moisture,
steam, frost, and not exposed to the sun and rain. Otherwise, in harsh
environments, the insulation of the motor and the control cabinet will be
lowered, which may cause electric shock and fire accidents.
Please place the pump in a room managed by someone, or in a location that
is not easily accessible by outsiders, separated by a fence. Touching the
rotating parts and high temperature parts may cause personal injury.
Please install an earth leakage circuit breaker dedicated to this product.
A wiring breaker with an earth leakage alarm output is recommended to
avoid electric shock or fire accident.
Attention
Be sure to prepare a spare pump when using it with living things (fish
farms, aquariums, etc.). In order to avoid the lack of oxygen caused by
the failure of the water pump.
Please do not use inverter to drive, it may cause pump failure.
Do not use in copper-weary biological environments. so as not to
significantly shorten the life span of the organism.
Set up a spare pump for use when the pump stops. To prevent the device from
stopping by water-breaking.
When using important equipment (computer cooling equipment, cold storage
cooling equipment, etc.), be sure to have a backup pump. To avoid water
cut-off due to water pump failure, equipment can not run
In order to prevent the mixing of cutting oil, rubber agent and foreign
material produced during manufacture, a suitable filter is set up at the
outlet, the filter is fully cleaned and the debris is confirmed to be free
of debris before it can be used.
Do not use liquids other than water, such as oil, seawater, organic
solvents and other media. Otherwise, there will be water pump failure,
electric leakage and electric shock.
In winter, in order to prevent ice, to do insulation, heating , drainage
measures. To prevent damage caused by ice in the interior when the water
pump is stopped.
Regularly confirm the operating status of the protection relay. To avoid
accidents that do not work properly, resulting in electric shock and
malfunction.

5
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097
EBARA Horizontal Split Case Pump CB Series
Operating, Installation, and Maintenance
- 5 -
PM10U-
EBARA
CORPORATION
■
Pump technical data
Description Standard. Optional
Handling Liquid
Liquid type Clean water (PH: 5.8 - 8.6) *1
Temperature 0-80℃ *2
Maximum working pressure
1.6MPa
2.5MPa
Structure
Impeller Closed.
Shaft seal Mechanical seal. Gland paking
Bearing Sealed ball bearings
Flange Suction side
GB 16K
R.F. JIS 16K R.F./JIS 20K R.F.
Discharge side
GB 16K
R.F. JIS 16K R.F./JIS 20K R.F.
Material
Pump casing
HT250
QT450-10
Impeller
ZCuSn5Pb5Zn5
Stainless steel casting
Shaft
20Cr13
Stainless steel (316, etc.)
Bushing
N/A
With Bushing
■Motor technical data
Number of poles 2P 4P 6P
Motor Phase 3 Phase
Voltage 50Hz, 380V
Type Totally enclosed air-cooled
Installation site
and environment
Indoor, ambient temperature: 0 - 40 ℃
Relative humidity: below 90% (no condensation)
Altitude: Below 1000 meters
No corrosive/explosive gases and vapors
*1 Fresh water, industrial water and well water, Water temperature 0 - 80 ℃ ， pH value is 5.8 to
8.6,and the Chloride ion concentration is below 200mg/L.
*2 The water pump performance that should be achieved by suction ingesting the full head indicates
the water temperature at 20℃. If the actual water pump is not running at a water temperature of
20℃, the water absorption performance of the pump will decrease, especially for the treatment of
hot water.
*3 The voltage and frequency fluctuations should be within the range of 5% +/-2%, respectively. The
total value of these indicators at the same time should be within 5% of the absolute value. In
either case, the motor characteristics and temperature rise are different from the rated status.
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6
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097
EBARA Horizontal Split Case Pump CB Series
Operating, Installation, and Maintenance
- 6 -
PM10U-
EBARA
CORPORATION
4
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Warning
In order to prevent the risk of injury due to the overturning
of the pump and damage to the pipes due to the vibration of
the pump, please fix the pump firmly with the anchor bolts.
When moving this product, please work carefully in accordance
with the lifting essentials (nameplates). Beware of falling.
Do not touch the motor with water to avoid electric shock,
leakage, fire and failure.
For the operation and construction of the pump, please
confirm its weight and shape for safe operation to avoid the
risk of falling and personal accident.
Attention
When conducting the motor insulation resistance test during
assembly, remove the wiring
from the control cabinet, measure
the insulation resistance
with an insulation resistance meter
that matches the power supply voltage, and confirm that the
resistance between the motor wire and the ground wire exceeds
1MΩ before wiring. So as not to burn t
he motor, resulting in
electric shock and fire accidents.
Do not cover the motor with blankets, cloth, etc. to avoid
overheating and fire.
In order to prevent freezing in winter, measures such as heat
preservation, heating and drainage should be taken. In order
to prevent the water inside from freezing and causing damage
when the pump is stopped.
In order to prevent the mixing of cutting oil, rubber agent,
and foreign matter generated during manufacturing, a suitable
filter is installed at the outlet, and it is fully cleaned
and filtered, and it can be used after confirming that there
is no foreign matter.

7
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097
EBARA Horizontal Split Case Pump CB Series
Operating, Installation, and Maintenance
- 7 -
PM10U-
EBARA
CORPORATION
4
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Warning
Do not place this product outdoors or in rainy places.
Deterioration of insulation is the cause of leakage and
electric shock fire.
Considering the life of
the machine, please choose a place
that is well ventilated, free from dust, corrosive or
explosive gas, salt, moisture, steam, frost, and not exposed
to the sun and rain. Otherwise, in harsh environments, the
insulation of the motor and the control cabinet
will be
lowered, which may cause electric shock and fire accidents.
Please place the water pump in a room managed by someone, or
in a location that is not easily accessible by outsiders,
separated by a fence. Touching the rotating part
s and high
temperature parts may cause personal injury.
(1)The pump must be installed indoors.
(2)The maintenance of the pump should be selected in a convenient place.
(3)Put a fence next to the pump in case unrelated personnel approach.
(4)The pump is installed as low as possible near the water source, the suction height (from the water to
the water pump center) is low, and the suction pipe is short.

8
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097
EBARA Horizontal Split Case Pump CB Series
Operating, Installation, and Maintenance
- 8 -
PM10U-
EBARA
CORPORATION
4
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(1)If there is a phenomenon that foreign objects
enter the pump delivery liquid (metal particles
and sand particles from the pipeline, etc.), a
filter should be installed at the suction end.
Filters should be cleaned regularly to prevent
clogging. Even if the liquid pumped by the pump is
clean, attach the filter the first time the pump
runs, because there are still some metal particles
and sand left in the pipe.
(2)If the weight of the suction or discharge
piping is applied to the pump, the alignment of
the pump may be damaged. At this time, take
support measures for the pipeline as shown in
Figure 2
(3)A check valve should be installed in the
following cases, that is, when the pipeline is
long, the actual pump head is high, the pump is
running in automatic mode, the liquid is
transported to a pressure storage tank, and when
multiple pumps are running in parallel. The check
valve should be installed between the pump and the
discharge valve.
(4)Install an exhaust valve where air is
unavoidably trapped. Exhaust valves should not be
installed in the parts where negative pressure
occurs in the suction pipe, because the valves
installed in such parts will cause air to be
sucked in.
(5)If there is a risk of water hammer, appropriate
measures can be taken, such as installing a quick
check valve.
(6)When the water pump is used for suction to a
high place, the end of the suction pipe should be
arranged at a depth of more than 2 times the pipe
diameter (D), as shown in Figure 2. And keep the
pipe ends 1 to 1.5 D or more from the bottom.
F
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gure 2
Piping
Installation
Pipe
Supp
or
t
Below 6
m
(Minimum)
Check valve
Pipe joint
P
ump
Coupling
(Keep it as short as
possible and avoid
Motor
Foot valve
Min.Water level
Pipe Support
Below 6
m
(Minimum)
Check valve
Pipe joint
Pump
Pipe support
Coupling guard
(Keep it as short as possible
and avoid bulges)
Motor
Min .W at e r level
Foot valve
Min .W at e r level
Figure 2 Piping Installation

9
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097
EBARA Horizontal Split Case Pump CB Series
Operating, Installation, and Maintenance
- 9 -
PM10U-
EBARA
CORPORATION
(a)Equipped with a bottom valve with a filter at
the end of the suction line to prevent the entry
of foreign matter.
(b)The suction piping is to be as short as
possible and to reduce bending up to the pump, as
shown in Figure 3 and do not install gate valve.
Keep the pipes tightly sealed to prevent air from
entering from the connection of the suction pipe.
(c)The size of the foot valve and the size of the
suction reducer shall be as specified in Table 1.
The arrangement of the suction duct shall not have
a bulge as shown in Figure 4 to prevent air
stagnation. In addition, trapped air can cause the
delivery medium to be blocked, or burn out
rotating parts due to dry running of the water
pump.
(d)Suction piping shall not branch, such as shown
in Figure 5. Because when the single machine is
running, air will enter from the pump that has
stopped running, so that the pump cannot pump the
liquid
Ta
ble
1
Pump suction
pipe diameter
Foot valve
size
Reducer size of
suction end
100 125 125×100
125 150 150×125
150 200 200x150
200 300 300x200
250 350 350x250
300 400 400x300
350 450 450x350
400 500 500x400
500 600 600X500
F
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ure
3
T
rapped air
F
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gure
4
F
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gure
5

10
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097
EBARA Horizontal Split Case Pump CB Series
Operating, Installation, and Maintenance
- 10 -
PM10U-
EBARA
CORPORATION
(7)Pouring and pressing
In backflow type operations, a gate valve is
installed on the suction line. As shown in Figure
6. If a gate valve is not installed, the tank and
piping will need to be completely drained during
pump inspections and repairs.
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Warning
After the coupling is centered, install the coupling guard.
Also, keep away from rotating parts while the pump is running
to prevent hazards.
The alignment of the pump has been correctly completed before shipment from the manufacturing
plant, however when the anchor bolts are installed, the base would be twisted, and the center
of the pump shaft and the motor shaft may be misaligned.During the operation of the pump, if
there is a phenomenon that the pump shaft and the motor shaft are not aligned, various
problems will gradually appear, such as vibration, noise and abnormal wear of the bearing.
Be sure to perform the alignment adjustment as follows during installation.
Figure 7 Misalignment of the center of the shaft betweenpump and motor during installation
G
ate
Valve
Volve
F
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6

11
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097
EBARA Horizontal Split Case Pump CB Series
Operating, Installation, and Maintenance
-11-
PM10U-
EBARA
CORPORATION
((11))AAlliiggnnmmeennttaaccccuurraaccyy
Measuredat4pointson the outer surface of the coupling and the coupling clearance at each
point,thealignmentaccuracyshouldbe within the ra nges hown below.
[RangeofAlignmentAccuracy]
-Toleranceofmisalignmentofoutersurfa ce: 0.05mm or less
-Toleranceofgapbetweencouplings:0.1m m or less
Figure8Radialalignment
ThedistanceSis measured at 4 points on
theoutersurfaceof the coupling. Spacing S
mustbelessthan0.05 mm.
Figure9axialalignment
Useafeelergaugeortape r gauge to measure
thedistancesAandB.
Thegapbetween the couplings should be
adjustedto2-4mm. The difference between A
andBmustbelessthan 0.1 mm.
Ｓ
S
cale
Taper
gauge.
Ａ
B
- 11 -
PM10U-
EBARA
CORPORATION
(
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Measured at 4 points on the outer surface of the coupling and the coupling clearance at each
point, the alignment accuracy should be within the range shown below.
[Range of Alignment Accuracy]
-Tolerance of misalignment of outer surface: 0.05mm or less
-Tolerance of gap between couplings: 0.1mm or less
Figure 8 Radial alignment
The distance S is measured at 4 points on
the outer surface of the coupling. Spacing S
must be less than 0.05 mm.
Figure 9 axial alignment
Use a feeler gauge or taper gauge to measure
the distances A and B.
The gap between the couplings should be
adjusted to 2-4 mm. The difference between A
and B must be less than 0.1 mm.
Ｓ
S
cale
Taper
gauge.
Ａ
B

12
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097
EBARA Horizontal Split Case Pump CB Series
Operating, Installation, and Maintenance
- 12 -
PM10U-
EBARA
CORPORATION
(
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Centering adjustments can be made by adding wedges under the base.
(a) Position of inserting wedge
Wedges should be inserted on both sides of the anchor bolts and, if necessary, where the
base has a tendency to bend(middle point between the anchor bolts and the anchor bolts).
Figure 10 Where to insert the wedge
(b) Centering adjustment
Check the condition of the coupling, and adjust the coaxiality of the coupling within
the possible range by pushing the wedge appropriately.
Also, since the wedge location will be buried by the grout after installation,
subsequent alignment adjustment should be done by inserting a liner under the motor.
When installing the motor on a field base, align it by adding a liner to the motor in
a similar manner. During alignment, the coupling guard is removed, but must be
installed before operation.
Figure 11 Centering adjustment
B
ase
Wedge
Both sides of anchor bolts Where the base has a tendency to bend
W
edge
B
ase
Press

13
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097
EBARA Horizontal Split Case Pump CB Series
Operating, Installation, and Maintenance
- 13 -
PM10U-
EBARA
CORPORATION
4
4
.
.
4
4
)
)
E
E
l
l
e
e
c
c
t
t
r
r
i
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n
Warning
Check that there is no looseness or foreign matter in the
wiring parts of the motor, the primary and secondary sides of
the control
cabinet, and the connection parts and wiring
parts of the power equipment in the control cabinet.
Looseness of the wiring an
d connection parts may cause poor
contact, and if there are foreign objects in the terminal
parts, it may cause a fire due to high temperature.
Be sure to perform grounded operation. If it is operated
without grounding, it may cause an electric shock accident in
the event of failure and leakage.
When using and constructing the pump, please entrust
professional and technical personnel to operate it.
Otherwise, there is a risk of fire or injury.
Wiring work
should be carried out by professionals in
accordance with correct regulations and benchmarks. Make sure
that the wiring terminals are not loose. Misoperation by
unqualifi
ed personnel not only violates the law, but may also
cause accidents such as electric shock and fire
Attention
Make sure that the motor terminals are not loose and fall
off. Even if there is only one loose part, it will damage the
motor due to phase loss operation.
(1) Please follow Figure 12 to perform the wiring work.
3.0kW or less Power supply
Larger than 4.0kW
Power supply
Larger than 4.0kW
If the motor is not standard with Ebara, please follow the wiring diagram in the motor
terminal box or the operation manual of the motor.
Figure 12 Wiring connection
Motor
Motor
Motor
Switch
Switch
Star
-
Delta
Starter

14
EBARA PUMPS AMERICAS CORPORATION
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(t) 803.327.5005 (f) 803.327.5097
EBARA Horizontal Split Case Pump CB Series
Operating, Installation, and Maintenance
- 14 -
PM10U-
EBARA
CORPORATION
(2)Before turning on the switch, check the following items.
(a)Whether the fuse is installed.
(b)If there is an error in the wiring.
(c)Whether the grounding is corrected
5
5
.
.
O
O
p
p
e
e
r
r
a
a
t
t
i
i
o
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n
n
Warning
After alignment, be sure to install the coupling guard. Also,
keep away from rotating parts while the pump is running. High
speed operation may cause personal injury.
When the pump is running, do not touch the rotating parts such
as th
e main shaft and coupling. In addition, even if the pump is
not running but the power is on, it may suddenly start running
due to automatic operation, so do not
touch the rotating parts
such as the main shaft and the coupling at this time. High speed
operation may cause personal injury.
Do not place dangerous or flammable materials near the pump and
motor. Sparks or flames in the event of a malfunction can cause
a fire.
Do
not run the pump for more than 2 minutes with the discharge
valve closed. T
he rise of pressure and temperature in the pump
will cause damage to the casing and plug, etc., causing the
motor to burn out.
Do not touch the electrically charged parts while the power is
on. There is a risk of electric shock.
Do not let the motor get wet to avoid electric shock, leakage,
fire and other accidents.
Attention
When the pump is stopped and then restarted, follow the
requirements of "Installation" and "Operation" and conduct a
trial operation. In order to prevent the pump from running
poorly, the motor burnt out, and dry running.
Do not run dry to prevent air from being mixed into the liquid.
In order to avoid damage to the casing, bearing and shaft seal,
the pump cannot work. Also, overheating of the pump can cause
damage.
If the liquid temperature exceeds 40℃, do not touch the pump t
o
avoid high temperature burns.

15
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097
EBARA Horizontal Split Case Pump CB Series
Operating, Installation, and Maintenance
- 15 -
PM10U-
EBARA
CORPORATION
In the event of a malfunction, please cut off the power
immediately and have it repaired by your dealer or Ebara
Machinery (China) Co., Ltd. in order to avoid accidents caused
by misuse.
Keep people away from the suction port of the suction piping of
the pump to prevent hands and feet from being inhaled.
When conducting the motor insulation resistance test during
assembly, remove the wiring from the control cabinet,
measure
the insulation resistance with an insulation resistance meter
that matches the power supply voltage, and confirm that the
resistance between the motor lead-
in wire and the ground exceeds
1MΩ, and then install the wiring. .
So as not to burn the
motor, resulting in electric shock and fire accidents.
Do not touch the motor to avoid hot burns.
Never turn on the power after draining the pipes in order to
avoid idling, causing damage to the water pump, overheating
damage.
Please operate t
he pump within the specifications. If it is used
in the case of variable flow, the
operation with less than the
minimum water volume (equivalent to the suction diameter [mm] of
the pump, for example, if the diameter is 50mm, the minimum
water volume is 50L
/min) should be avoided. In order to avoid
air lock in the pump, the internal press
ure and temperature
rise, causing damage to the pump.
5
5
.
.
1
1
)
)
P
P
r
r
e
e
p
p
a
a
r
r
a
a
t
t
o
o
i
i
n
n
b
b
e
e
f
f
o
o
r
r
e
e
s
s
t
t
a
a
r
r
t
t
u
u
p
p
(1)Although grease has been added to the bearing, there is no need to add grease before
operation, but just in case, please confirm it.
(2)Flush the pipeline before the pump is put into operation. At this time, a filter should be
installed on the suction side so that foreign matter (metal particles, sand, rust and
oxide scale from the pipeline, etc.) will not enter the pump. Failure to flush may result
in wear of mechanical seals and rotating parts.
(3)Rotate the water pump by hand to check whether it rotates smoothly. If the rotation is not
smooth, it indicates that there is rust in the pump, please check these matters.
(4)Be sure to fill the water before starting the pump. Running the pump without water
injection can cause a failure. Open the suction valve and the drain valve, and fill up
with the water in the piping to the water outlet of the pump.
(5)When injecting water, gently rotate the main shaft of the pump to completely discharge the
air in the impeller.

16
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097
EBARA Horizontal Split Case Pump CB Series
Operating, Installation, and Maintenance
- 16 -
PM10U-
EBARA
CORPORATION
5
5
.
.
2
2
)
)
D
D
u
u
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p
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(1)After water is filled, close the drain valve. If there is a suction valve, open all the
suction valve.
(2)Jog (turn on the switch and then turn it off immediately) once or twice to confirm that
there is no problem with the operation. Also confirm the direction of rotation. (Crockwise
rotation when viewed from the motor fan side)
Precautions
Check the direction of rotation of the pump. When the three-phase
power supply is running in reverse, the wiring should be exchanged
to make it run in the forward direction.
(3)After the rotation speed has reached the rated speed, slowly open the drain valve and
enter continuous operation.
(4)Confirm that there is no problem with pressure, current, vibration, sound, etc. (For
others, refer to "6.Maintenance"). Except during measurement, the valves of pressure
gauges and vacuum gauges should be kept closed. If its valve is left open for an extended
period of time, it can cause damage.
(5)If there is no check valve installed on the discharge side, when stopping the operation,
slowly close the discharge valve and then stop the motor.
(6)For the operation after the second time, please refer to the content of "6.Maintenance".
If there is no abnormality, it can be operated immediately.
Precautions
To avoid operating in cavitation conditions. If the flow rate is
too large during operation, it may cause cavitation. When
vibration and noise occur and the specified flow rate (pressure)
cannot be reached, cavitation will inevitably occur. At this time,
close the gate valve of the discharge port and reduce the flow
rate.
Precautions
If the air mixed in the water pumping process is not discharged,
it will cause damage to the bearing and shaft seal, so that the
water cannot be pumped.
Precautions It cannot be run in reverse. Vibration can loosen impeller nuts and
bolts and cause accidents.

17
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097
EBARA Horizontal Split Case Pump CB Series
Operating, Installation, and Maintenance
- 17 -
PM10U-
EBARA
CORPORATION
6
6
.
.
M
M
a
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n
n
a
a
n
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c
c
e
e
Warning
When stopping operation, please cut off the power. Otherwise, it may cause
insulation aging, which may cause electric shock, leakage and fire.
After alignment, be sure to install the coupling guard. Also, keep away
from rotating parts while the pump is running. High speed operation may
cause personal injury.
When the pump is running, do not touch the rotating parts such as the main
shaft and coupling. In addition, even if the pump is not running but the
power is on, it may suddenly start running due to automatic operation, so
do not touch the rotating parts such as the main shaft and the coupling at
this time. High speed operation may cause personal injury.
Do not place dangerous or flammable materials near the pump and motor.
Sparks or flames in the event of a malfunction can cause a fire.
Check that there is no looseness or foreign matter in the wiring parts of
the motor, the primary and secondary sides of the control cabinet, and the
connection parts and wiring parts of the power equipment in the contro
l
cabinet. Looseness of the wiring an
d connection parts may cause poor
contact, and if there are foreign objects in the terminal parts, it may
cause a fire due to high temperature.
Do not run the pump for more than 2 minutes with the discharge valve
closed. The rise of pressure and temperature in the pump will cause damage
to the casing and plugs, etc., and cause the motor to burn out.
Do not touch live parts while the power is on. There is a risk of electric
shock.
Do not burn plastic products on site. harmful gases will be produced.
When this product is moved, please operate carefully according to the
hoisting essentials (nameplate). Beware of falling.
Please be sure to turn off the power when the machine is inspected and
maintained. In order to avoid the sudden start of the pump, causing
electric shock or personal accident.
Do not let the motor get wet to avoid accidents such as electric shock,
leakage and fire.
For the operation and construction of the pump, please confirm its weight
and shape for safe operation to avoid the risk of falling and personal
accident.
Except for professional repair technicians, no one can disassemble the pump
for repair to avoid personal injury caused by electric shock, fire or
abnormal operation.
When disassembling
and inspecting, please first confirm that the suction
and discharge valves are closed to drain through the water conduit, and
ensure that the pressure in the pump does not rise or negative pressure.
Otherwise, the casing may be damaged due to the a
bnormal operation of the
pump due to the pressure difference between suction and discharge.

18
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097
EBARA Horizontal Split Case Pump CB Series
Operating, Installation, and Maintenance
- 18 -
PM10U-
EBARA
CORPORATION
Attention
When the operation is stopped, drain the water in the pump and piping. If
this is not the case, the stagnant water will rot and bacteria may flow out.
When restarting the operation after stopping for a period of time, perform a
trial operation according to the items of "installation" and "operation".
Pump limitation, motor burnout, dry running, etc. may occur.
Do not run dry to prevent air from being mixed into the liquid. In order to
avoid damage to the housing, bearings and shaft seals, water should not be
stirred. Also, overheating of the pump can cause damage.
If the medium exceeds 40℃, do not touch the pump to avoid high temperature
burns.
In the event of a malfunction, please cut off the power immediately and have
it repaired by your dealer or Ebara Machinery (China) Co., Ltd. In order to
avoid misuse causing accidents.
Replace consumable parts regularly. If it is used in an aged/worn condition,
it may cause water leakage, burn/breakage, etc. Please entrust a dealer or
Ebara Machinery (China) Co., Ltd. for overhaul or replacement of parts.
Keep people away from the suction port of the suction piping of the pump to
prevent hands and feet from being inhaled.
Make sure that the wiring of the motor terminals is not loose or falling
off. Even if there is only one loose part, the motor will be damaged due to
lack of phase operation.
Do not touch the motor to avoid high temperature burns.
Do not cover the motor with blankets, cloth, etc.to avoid overheating and
fire.
Never turn on the power after draining the pipes. In order to avoid idling,
causing damage to the water pump, overheating damage.
Periodically check the operating status of the protective relay. In order to
avoid the accident can not work properly, resulting in electric shock and
failure accidents.
Please operate the pump within the specifications. When used in applications
where the water volume varies, avoid running the pump below the minimum
water volume (equivalent to the suction diameter [mm] of the pump, for
example, if the diameter is 50mm, the minimum water volume is 50L/min). In
order to avoid air resistance in the
pump, internal pressure and temperature
rise, resulting in damage to the pump.