EBARA 25EVMS85.37 User manual

CF1212U-H001 REV.1
- 1 -
EBARACORPORATION
EBARA Stainless Steel Vertical
Multi-Stage Pump
Model EVMS/EVMSL
Instruction Manual
CAUTION
Thank you for choosing the EBARA Model EVMS/EVMSL Stainless Steel Vertical Multi-stage Pump. EBARA
takes every caution in manufacturing the product for safe use by the customer. However, handling this pump
in an inappropriate manner may reduce its functional capacity and result in an accident.
This operation manual explains the proper procedures concerning the installation, operation, and
maintenance of the product. This manual should be read before conducting operation and maintenance and
inspections on this pump.
Installation personnel must provide copies of this manual to the customer’s pump operation, maintenance and
inspection personnel. Keep this manual in a safe place where it can be consulted at any time.
To installation personnel:
Be sure to issue the customer’s pump operation, maintenance, and inspection personnel with copies of this
manual.
Contents
１Warnings ............................
2
７Maintenance........................
17
２Safety Cautions ......................
3
1. Daily inspection ...................... 17
３Delivery checks ......................
5
2. Long-term pump stoppage and storage .. 18
1. Pump................................ 5
3. Consumable parts .................... 19
2.
Nameplate ........................... 5
８Trouble shooting....................
20
４Specifications........................
6
９Construction .......................
21
５Installation..........................
11
10 Mechanical Seal Replacement Procedures 23
1. Installation location ................... 11
1. Disassembly ......................... 23
2. Piping .............................. 11
2. Reassembly ......................... 24
3. Electrical wiring ...................... 13
11 Limited warranty....................
26
６Operation ...........................
14
1. Prior to start up ...................... 14
2. Operation ........................... 16
3. Stopping ............................ 16
4. Operate cautions .................... 16
Be sure to issue the customer’s
pump operation personnel with
copies of this manual

EVMS/EVMSL
- 2 -
１
Warnings
Warnings in this manual provide information needed for safe operation of the pump, and instructions for
preventing danger or injury to you or other people. So that you will know the degree and imminence of
danger that warnings signify, they are divided into two grades, WARNING and CAUTION, according to
the seriousness of what will happen if their instructions are not heeded. Both grades of warning contain
important safety information; carry out all the instructions that they give, without fail.
Warning grade
Meaning
Warning
Potentially hazardous situation. Failure to follow the instructions could
result in death or serious injury.
Caution
Failure to follow the instructions given could result in minor injury, or
damage to the pump.
Note
Used to emphasize important information.
Meanings of symbols accompanying WARNINGs and CAUTIONs.
Indicates prohibition (that something must NOT be done).
Precisely what must not be done is indicated by pictures or words either
inside the circle of the symbol or close to it.
Indicates an imperative (that something MUST be done).
Precisely what must be done is indicated by pictures or words close to
the symbol.

EVMS/EVMSL
- 3 -
EBARACORPORATION
２
Safety Cautions
Warning
Carry out the construction correctly in accordance with
electrical equipment technical standards, interior wiring
regulations, Building Standards and applicable regulations.
Work safely by confirming weight and form from the outline
drawing, catalog, etc. prior to hoisting.
Never use the product or install parts while it is hoisted. This is
very dangerous. The equipment may fall.
Fasten the pump securely with anchor bolts to prevent it
overturning.
Perform wiring work correctly as specified by electrical facility
technical standards and extension codes. Incorrect wiring
could result in electric shock and fires.
Install and ground an earth cable. Electric shock could occur
during accidents or electric leakage.
To prevent electric shocks, install a dedicated earth leakage
breaker.
Before wiring the motor, measure the insulation resistance
using an insulation tester (DC 500 V megger). Confirm that
there is a value of 5MΩor more between the motor lead wire
and the ground.
Do not operate the pump for more than 1 minute with the
discharge valve left closed.
The pressure within the pump will rise, and the casing or plugs
may be damaged.
Do not touch the rotating parts such as the spindle, shaft
couplings, V-pulleys, etc. while the pump is running. Since
these parts rotate at high speed, doing so could result in
injury.
Disassembly and repair of the pump should only be performed
by specialist maintenance technicians. Otherwise, error by
personnel could result in electric shock, and the pump
catching fire or operating abnormally and causing injury.
Always turn the power switch OFF before inspecting or
repairing the pump. Not doing so could result in the pump
starting up suddenly in auto operation, exposing personnel to
danger.
If there is a power failure, turn the power switch off.
Otherwise, the pump may start-up suddenly when the power
supply is resumed, exposing personnel to danger.
For disassembly and inspections, close the suction and
discharge valves, drain the casing drain, and ensure that the
pump pressure is not abnormal or negative. The pump may
undergo abnormal rotation while the work is incomplete,
resulting in damage to the casing.
In facilities with living matter (fish farms, fish preserves,
aquariums, etc.), always prepare a spare pump, as oxygen
deprivation may result due to pump failures.

EVMS/EVMSL
- 4 -
Caution
Do not operate the pump with 50 Hz specifications at 60 Hz.
Doing so will overload the pump, causing the motor to burn.
Do not operate the pump with 60 Hz specifications at 50 Hz.
Doing so will cause the pump to perform poorly.
If you have purchased a standard pump, refer to the standard
specifications shown below. The optional specifications indicate
changes made to some pumps to meet the needs of some
customers. Be sure not to operate your pump outside of the
ranges shown in the applicable specifications.
The equipment cannot be used for food-related fluid transport.
In important facilities (computer cooling facilities, freezer cooling
facilities, etc.) always prepare a spare pump for pump failures.
There will be entrainment of cutting lubricant contained in the
piping system, as well as rubber mould releasing agent, foreign
material, etc. Carry out flushing sufficient for the equipment, and
confirm before use.
Make sure that the floor surface where the pump is installed has
been waterproofed and treated for waste water. If it has not,
severe damage could be caused should leakage occur.
Make sure that any one of three terminals of the three-phase
motor is not loose or disconnected. Running the motor with only
two terminals connected could a phase interruption, burning out
the motor.
Pump failures are possible when operated with less flow rate
than appropriate for the pump size (nominal inlet bore diameter
in mm) (e.g. 50 L/min for size of 50 mm). When operation may
occur with a small flow rate, install relief pipes, etc. to ensure
operation at or above this flow.
If air is entrained during pumping and is not discharged, the
bearings and shaft seals may be damaged, and pumping may
be impossible. Avoid this situation.
Do not touch the pump when the liquid handled is hot water.
Burns may result from high temperatures.
Do not touch the motor. The motor’s surfaces will be hot, and
you could get burned if you touch them.
Do not cover the motor with a blanket or cloth. Doing so could
over heat the motor, setting a fire.
To prevent an accident if the pump stops running or an
abnormality occurs, immediately turn off the power switch.
Contact the shop from where you ordered the pump, or EBARA
to perform an inspection and maintenance on the pump.
When the pump is out of use for prolonged periods such as the
wintertime, water inside the pump could freeze, causing
damage to the pump. Accordingly, in such situations, either
drain all water from the pump or provide thermal insulation to
prevent the water from freezing.
Never disassemble the motor. When disassembly is necessary,
contact EBARA.

EVMS/EVMSL
- 5 -
EBARACORPORATION
EBARA
L
Serial number
Model
Head (m)
Electrical appliance and material
safety law indication marks etc.
Capacity (L/min)
The number of motor phase
number
Rated voltage (V)
Title (EBARA Pump)
Temperature range for liquid
handled (C)
Rated output (kW)
Rated frequency (Hz)
Rated input (W)
Company name
３
Delivery checks
Check the following points as soon as the pump is delivered.
１．Pump
Check that no parts were damaged due to accidents during transport, and that bolts and nuts
have not become loose.
２．Nameplate
The pump’s basic specifications are inscribed on the nameplate. Check the nameplate to ensure
that the equipment is as ordered.
Caution
Do not operate 50 Hz pumps at 60 Hz. The pump will
overload, and the motor will burnout.
Do not operate 60 Hz pumps at 50 Hz. Pump performance
will suffer.
1.1 kW or less models and 40EVMS(L)351.5, 50EVMS(L)151.5 (excluding 400 V class)
1.5 kW or higher models, but 40EVMS(L)351.5, 50EVMS(L)151.5 only 400 V class
Fig. 1 Data on pump nameplate
屋外用
min-1
Speed(min-1)
Speed (min-1)
Serial number
Model
Capacity (L/min)
Head (m)
Rated frequency (Hz)
Title (EBARA Pump)
Rated output (kW)
Company name

EVMS/EVMSL
- 6 -
４
Specifications
Refer to the nameplate for the head, capacity (CAP.) and speed, etc. of the pump you have purchased.
Additional specifications are indicated in the following table.
The pressure units used in this manual are as per the International System of Unit (SI). Reference values
are also provided in the brackets. { for reference.}
Caution
For customers purchasing standard goods, refer to the
standard specifications column.
There may also be specifications changes in the form of
optional specifications, on request of the customer.
Do not use the equipment beyond the scope of the
specifications.
The equipment cannot be used for food-related fluid transport.
In facilities with living matter (fish farms, fish preserves,
aquariums, etc.), always prepare a spare pump, as oxygen
deprivation may result due to pump failures.
In important facilities (computer cooling facilities, freezer
cooling facilities, etc.) always prepare a spare pump for pump
failures.
There will be entrainment of cutting lubricant contained in the
piping system, as well as rubber mould releasing agent,
foreign material, etc. Carry out flushing sufficient for the
equipment and confirm before use.

EVMS/EVMSL
- 7 -
EBARACORPORATION
■Standard specifications
Liquid handled
Fresh water (pH: 5.8 to 8.6) *1 cutting lubricant, cleaning fluid etc *2
-15C to 120C
Model EVMS/EVMSL pumps conform to the “Permeability standards for
water supply unit equipment” as per the Japanese Water Works Law.
Suction total head *3
(20℃)
Other than followings : -6 m
【50Hz】50EVMS…371～400L/min : -5 m
401～480L/min : -3 m
【60Hz】32EVMS…141～160L/min : -5 m
40EVMS…281～300L/min : -5 m
50EVMS…281～400L/min : -5 m
401～440L/min : -4 m
441～500L/min : -2 m
Maximum working pressure
Refer to table 2.1～2.2.
Standard allowable
suction pressure
Construction
Impeller
Closed, single liner
Casing
Lower: Inline
Intermediate: Return vane
Shaft seal
Mechanical seal
Bearing
Upper: sealed ball bearing (motor interior)
lower: submarged sleeve bearings
Flange
 25, 32, 40, 50 :
Equivalent to JIS10K
standard
Models with maximum working pressure 1.37
MPa {14 kgf/cm2} or less
Equivalent to JIS20K
Models with maximum working pressure 2.45
MPa {25 kgf/cm2} or less
Material
Lower casing
Model EVMS : SUS304 Model EVMSL : SUS316
Intermediate casing
Impeller
Shaft sleeve
Shaft
Model EVMS : SUS304 Model EVMSL : SUS316
（But 32EVMS(L)1967.5 and 9 stages or higher models of 50EVMS(L)
use SUS329A）
Wear ling
Model EVMS : PPS / SUS304 Model EVMSL : PPS / SUS316
Motor
*4
*5
Phase / pole
3 phase / 2 pole
Voltage
50Hz : 200V 60Hz : 200/220/230V
Type
Totally enclosed fan cooling type (outdoor)
Efficiency
IE3 (Premium efficiency) *6 *7
Installation location
Indoor or outdoor, ambient temperature 0 to 40C
Relative humidity 85% (no condensation)
Altitude 1,000 m or less
There should be no corrosive or explosive gas, steam, etc.
*1 Fresh water refers to tap water, industrial water or well water, with a temperature of 0 to 80C, a
pH of 5.8 to 8.6 and a chlorine ion concentration of 200 mg/L or less.
Contact EBARA regarding low-temperature liquid between -15 and 0C and high-temperature
liquid exceeding 80℃.
*2 Liquid that is not a slurry, not containing solid material (special specifications arise depending on
the property of the liquid)
*3 The pump’s total suction head is shown at a water temperature of 20℃. When the water differs
from this temperature, and for particular hot water temperatures, suction performance is reduced.
Please discuss the situation with EBARA.
*4 The tolerance value for voltage fluctuations is 5% or less, and the tolerance value for frequency
fluctuations is 2% or less. For simultaneous fluctuations of voltage and frequency, the sum of
their absolute values is within 5%. However in either case, the motor’s characteristics,
temperature rise, etc. are not in accordance with the rated values.

EVMS/EVMSL
- 8 -
*5 In the case of inverter drive, be careful of the following points, and discuss the situation with the
manufacturer of the inverter used.
(1) Ensure that the motor’s operating output is 90% or less of the rated output.
(2) Set the output frequency range at 60 to 95% of the mains power frequency.
(3) With inverter drive, magneto-sonic waves are produced by the motor, which may sound
quite harsh in comparison with mains power drive.
(4) Avoid a rotational speed range in which the pump and motor resonate during normal
operation.
*6 0.75 kW or higher models is cleared the Top Runner Standards.
*7 0.55 kW or less models is equivalent to premium efficiency (EBARA own setting).
■Optional specifications
Different
rubber material
NBR (Liquid temperature : 0℃～60℃), EPDM
Different
mechanical seal
SiC/SiC type (Liquid temperature : 0℃～90℃)
Purified water type (Liquid temperature : 25±5℃)
Different
motor
Different voltage・Special different voltage
Terminal box position change (every 90)
Tropical treatment, Anticorrosion treatment
Painting in designated color
Pull out the stage (1～2 stage)
Oil free treatment
■Table 1 Minimum flow (L/min)
50Hz
Flooding or positive suction
When sucking
Size
Liquid temperature :
～80℃*1
More than 81 ℃
～40℃
More than 41 ℃
25S
2
12
12
Unusable
25
3
20
20
32
5 *2
40
40
40
7
75
75
50
11 *2
130
130
50L
14 *2
180
180
60Hz
Flooding or positive suction
When sucking
Size
Liquid temperature :
～80 ℃*1
More than 81 ℃
～40 ℃
More than 41 ℃
25S
3
13
13
Unusable
25
3
25
25
32
5 *2
50
50
40
8 *2
90
90
50
14 *2
170
170
50L
14
220
220
Note) *1 : Please avoid continuous operation, this value is applied in temporary operation.
*2 : But following models is equivalent to value of More than 81 ℃.
50Hz : 32EVMS(L)2755.5・50EVMS(L)17515・50EVMS(L)16518
:60Hz : 32EVMS(L)1967.5・40EVMS(L)16611・50EVMS(L)12618

EVMS/EVMSL
- 9 -
EBARACORPORATION
■Table 2.1 Maximum working pressure and Standard allowable suction pressure (50Hz)
Size
Model
Maximum working pressure
Standard allowable suction pressure
1.37MPa(14kgf/cm2)
2.45MPa(25kgf/cm2)
MPa
kgf/cm2
25S
25EVMS(L)85.37
85.37
125.55
165.75
2551.1
3351.5
3952.2
0.92
9.4
25EVMS(L)125.55
0.70
7.1
25EVMS(L)165.75
0.48
4.9
25EVMS(L)2551.1
1.06
10.8
25EVMS(L)3351.5
0.62
6.3
25EVMS(L)3952.2
0.29
3
25
25EVMS(L)45.37
45.37
65.55
85.75
1251.1
1651.5
2352.2
3253.0
1.07
10.9
25EVMS(L)65.55
0.92
9.4
25EVMS(L)85.75
0.78
8
25EVMS(L)1251.1
0.48
4.9
25EVMS(L)1651.5
0.18
1.8
25EVMS(L)2352.2
0.75
7.6
25EVMS(L)3253.0
0.09
0.9
32
32EVMS(L)25.37
25.37
35.55
45.75
551.1
751.5
1152.2
1553.0
2054.0
2755.5
1.18
12
32EVMS(L)35.55
1.09
11.1
32EVMS(L)45.75
0.99
10.1
32EVMS(L)551.1
0.88
9
32EVMS(L)751.5
0.69
7
32EVMS(L)1152.2
0.30
3.1
32EVMS(L)1553.0
0.99
10.1
32EVMS(L)2054.0
0.51
5.2
32EVMS(L)2755.5
0.08
0.8
40
40EVMS(L)25.75
25.75
351.5
652.2
853.0
1054.0
1555.5
2157.5
23511
1.16
11.8
40EVMS(L)351.5
1.05
10.7
40EVMS(L)652.2
0.74
7.5
40EVMS(L)853.0
0.53
5.4
40EVMS(L)1054.0
0.32
3.3
40EVMS(L)1555.5
0.88
9
40EVMS(L)2157.5
0.31
3.2
40EVMS(L)23511
0.04
0.4
50
50EVMS(L)151.1
151.1
252.2
353.0
454.0
655.5
857.5
12511
17515
1.22
12.4
50EVMS(L)252.2
1.07
10.9
50EVMS(L)353.0
0.92
9.4
50EVMS(L)454.0
0.77
7.8
50EVMS(L)655.5
0.48
4.9
50EVMS(L)857.5
0.18
1.8
50EVMS(L)12511
0.67
6.8
50EVMS(L)17515
0.08
0.8
50L
50EVMS(L)151.5
151.5
253.0
354.0
455.5
657.5
9511
13515
16518
1.19
12.1
50EVMS(L)253.0
1.02
10.4
50EVMS(L)354.0
0.85
8.7
50EVMS(L)455.5
0.68
6.9
50EVMS(L)657.5
0.34
3.5
50EVMS(L)9511
0.90
9.2
50EVMS(L)13515
0.22
2.2
50EVMS(L)16518
0.00
0

EVMS/EVMSL
- 10 -
■Table 2.1 Maximum working pressure and Standard allowable suction pressure (60Hz)
Size
Model
Maximum working pressure
Standard allowable suction pressure
1.37MPa(14kgf/cm2
)
2.45MPa(25kgf/cm2
)
MPa
kgf/cm2
25S
25EVMS(L)56.37
56.37
76.55
106.75
1461.1
2061.5
2962.2
0.96
9.8
25EVMS(L)76.55
0.80
8.2
25EVMS(L)106.75
0.56
5.7
25EVMS(L)1461.1
0.24
2.4
25EVMS(L)2061.5
0.84
8.6
25EVMS(L)2962.2
0.11
1.1
25
25EVMS(L)26.37
26.37
36.55
46.75
761.1
961.5
1462.2
1963.0
2364.0
1.15
11.7
25EVMS(L)36.55
1.05
10.7
25EVMS(L)46.75
0.94
9.6
25EVMS(L)761.1
0.62
6.3
25EVMS(L)961.5
0.41
4.2
25EVMS(L)1462.2
0.96
9.8
25EVMS(L)1963.0
0.43
4.4
25EVMS(L)2364.0
0.006
0.06
32
32EVMS(L)26.75
26.75
361.1
461.5
662.2
863.0
1164.0
1565.5
1967.5
1.09
11.1
32EVMS(L)361.1
0.95
9.7
32EVMS(L)461.5
0.81
8.3
32EVMS(L)662.2
0.53
5.4
32EVMS(L)863.0
0.25
2.5
32EVMS(L)1164.0
0.92
9.4
32EVMS(L)1565.5
0.36
3.7
32EVMS(L)1967.5
0.01
0.1
40
40EVMS(L)16.75
16.75
261.5
362.2
463.0
664.0
865.5
1167.5
16611
1.21
12.3
40EVMS(L)261.5
1.05
10.7
40EVMS(L)362.2
0.90
9.2
40EVMS(L)463.0
0.74
7.5
40EVMS(L)664.0
0.42
4.3
40EVMS(L)865.5
0.11
1.1
40EVMS(L)1167.5
0.72
7.3
40EVMS(L)16611
0.04
0.4
50
50EVMS(L)161.5
161.5
263.0
365.5
567.5
7611
10615
12618
1.16
11.8
50EVMS(L)263.0
0.95
9.7
50EVMS(L)365.5
0.74
7.5
50EVMS(L)567.5
0.32
3.3
50EVMS(L)7611
0.98
10
50EVMS(L)10615
0.35
3.6
50EVMS(L)12618
0.12
1.2
50L
50EVMS(L)162.2
162.2
264.0
367.5
5611
7615
9618
1.12
11.4
50EVMS(L)264.0
0.87
8.9
50EVMS(L)367.5
0.63
6.4
50EVMS(L)5611
0.13
1.3
50EVMS(L)7615
0.72
7.3
50EVMS(L)9618
0.23
2.3

EVMS/EVMSL
- 11 -
EBARACORPORATION
５
Installation
Warning
Carry out the construction correctly in accordance with
electrical equipment technical standards, interior wiring
regulations, Building Standards and applicable regulations.
Work safely by confirming weight and form from the outline
drawing, catalog, etc. prior to hoisting.
Never use the product or install parts while it is hoisted. This is
very dangerous. The equipment may fall.
Fasten the pump securely with anchor bolts to prevent it
overturning.
Caution
Check that the floor has had water prevention treatment and
drainage treatment. Severe damage may result if water leaks
occur.
1. Installation location
(1) This pump is designed for both indoor and outdoor use.
(2) Giving consideration to equipment wear, install a roof, etc., and select a site where it will not
be exposed to wind and rain or direct sunlight.
(3) Near steam blow-off openings and when there is a danger of exposure to salty winds (salt
damage), etc., install an appropriate protective cover, or use it indoors.
(4) Whenever possible, select a location with good ventilation, and with minimal dust and
humidity. The ambient temperature should be 40℃or below.
(5) Select a place that is convenient for pump maintenance.
(6) Take measures such as enclosing the pump to keep unqualified personnel away from the
equipment.
(7) Install the pump in a location as close as possible to the water source, with a low static
suction head (height from the intake liquid surface to the pump center) and a short length of
suction pipe.
(8) For the suction head, Prefer to Standard specifications on page 7.
(9) Since water leaks can occur from the mechanical seals and gaskets in the pump, take
precautions to prevent water from leaking onto the floor or lower levels.
Note
Following installation, make a request to qualified personnel for disposal
of unnecessary packing boxes, etc.
2. Piping
(1) With the companion flange, screw into
the pipe and then attach to the pump.
(2) Provide sufficient pipe supports so that
there is no load on the pump from the
suction pipe and discharge piping.
(3) Install a check valve when the pipe is
long, the actual pump head is high, in
automatic operation, when water is
delivered to a pressure tank, or when 2
or more pumps are operated in parallel.
Install the check valve between the
pump and the discharge valve.
(4) If there is a risk that foreign substance
is mixed in fluid, attach a strainer on
the suction side. In addition, so that the
strainer is not clogged , clean it
regularly.

EVMS/EVMSL
- 12 -
(5) If thermal insulation is added to the piping, do not apply it to the motor. Also, if it is installed
near the boiler, prevent the heat from the boiler to the pump
(6) When installing a pump near the source of heat, please make sure that the heat from a source of
heat won't be transmitted to a pump.
(7) When piping for cool or hot water circulation is used in closed cycle, install an expansion tank or
safety valve on the piping.
(8) Install air vent valves at locations on the device where accumulation of air cannot be avoided.
However, do not install in the suction pipes or other locations where there will be negative
pressure. Conversely, air will be sucked in.
(9) When there is a danger of water hammer, take measures such as the installation of
emergency check valves.
(10) When sucking
(a) Place the suction pipe end at a depth of at least twice the pipe diameter (D), at least 1 to
1.5 D away from the bottom.
(b) As shown in Fig.2, the suction pipe should be as short as possible, with minimal bend. Set
a rising gradient towards the pump, and do not install a gate valve. There should be
sufficient seals to ensure that air is not sucked in from suction pipe connectors.
(c) As shown in Fig.3, avoid convex parts along the
stretch of suction pipe as this is where air would
accumulate. An accumulation of air may make
pumping impossible, or lead to dry operation, resulting
in seizing of sliding parts. When conical suction pipe is
necessary, it is prepared as a optional accessory.
Please order it from our company.
(d) As shown in Fig.4, do not branch the suction pipe. During
one(1) pump operation, air will be sucked in from the
stopped pump, and pumping will fail.
(11) Flooding or positive suction
For the flooding system, install a gate valve on the suction
pipe as shown in the figure. If there is no gate valve, all
water in the tank and pipes must be removed during
inspections and repairs.
(12) Installation of pressure gauge & compound gauge
When installing a pressure gauge and compound gauge in the pump main body, use the
drain plug of the bottom casing. For identification of the pump’s discharge side (pressure
gauge) and suction side (compound pressure gauge), check the label attached to the bottom
casing.
Fig.4
仕切弁
Fig.5
Fig.3
Gate valve

EVMS/EVMSL
- 13 -
EBARACORPORATION
3. Electrical wiring
Warning
Carry out wiring work correctly, in accordance with electrical
equipment technical standards and interior wiring regulations.
Electric shocks or fires may result from incorrect wiring.
Install the ground wire securely, and make sure to carry out
grounding. Shocks may result when there is a malfunction or
fault current.
To prevent shocks, install a dedicated earth leakage breaker.
Before wiring the motor, measure the insulation resistance
using an insulation tester (DC 500 V megger). Confirm that
there is a value of 5Mor more between the motor lead wire
and the ground.
Caution
With 3-phase motors, check that none of the 3 motor terminals
is loose or has become separated. Phase interrupted
operation will result when the equipment is operated with 2
terminals, and the motor will burnout.
Perform wiring work correctly as specified by electrical facility
technical standards and extension codes. Incorrect wiring
could result in electric shock and fires.
(1) Carry out the wiring as per Fig.6 or displayed in the lid in the terminal box of the electric
motor.
(2) Please install an overload safety device in accordance with electrical equipment technical
standards and interior wiring regulations.
(3) Check the following conditions before turning on the switch:
(a) Installation of appropriate fuses.
(b) Correct wiring.
(c) Correct grounding.

EVMS/EVMSL
- 14 -
６
Operation
Warning
Do not operate the pump for more than 1 minute with the
discharge valve left closed.
The pressure within the pump will rise, and the casing or plugs
may be damaged.
Do not touch the rotating parts such as the spindle, shaft
couplings, V-pulleys, etc. while the pump is running. Since
these parts rotate at high speed, doing so could result in injury.
If air is entrained during pumping and is not discharged, the
bearings and shaft seals may be damaged, and pumping may
be impossible. Avoid this situation.
Do not touch the pump when the liquid handled is warm water.
Burns may result from high temperatures.
Never touch the motor. Burns may result from high
temperatures.
Do not cover the motor with blankets, cloths, etc. Fires may
result from overheating.
1. Prior to start up
(1) Before driving a pump, please be sure to go on Flushing in the laying of the pipes. Please
install a strainer in the suction side so that alien substance (chip of laying of the pipes, sand,
patina and the scale) etc. doesn't get mixed in a pump at this time. I have to do Flushing, a
mechanical sticker and rotating part generate abnormal wear. Please make sure that the
strainer won't cause clogging at the time of pump driving.
(2) Ensure that the power switch is OFF. Rotate the coupling manually, and check that it rotates
easily. Inspect the pump if the movement is hard or non-uniform.
(3) Be sure to perform pump priming, as operation of the pump without priming could cause
breakdown. Priming is to be done through the following methods.
（a）With pouring and pressing
Perform pump priming with opening the air vent plug, suction valve and discharge valve
only when it is possible to fill the pump with water using pouring and pressing.
（b）With sucking
Open fully the air vent plug and the ball valve.
Prime by pouring in water until squirting from the air vent plug. Close the priming plug when
priming completed.
Close the air vent plug.

EVMS/EVMSL
- 15 -
EBARACORPORATION
（c）With sucking with priming set
As shown on diagram below, piping from priming plug.
Connect the hose to the hose nipple.
Fully open the air vent plug and ball valve.
Prime by pressurization from the hose.
Close ball valve after confirming that water comes out from the air vent plug.
Close the air vent plug.
Note
We have priming set by sold separately; without hose. Please order.
(4) When priming, manually rotate the unit, completely removing air from inside the impeller.
(5) The coupling guard must be installed for operation. Injuries could result.
hose
hose nipple
ball valve
nipple
air vent plug
scerw convert adapter
O ring
priming plug

EVMS/EVMSL
- 16 -
2. Operation
(1) Close the discharge valve when priming is complete. Completely open the suction valve for
flooding or positive suction.
(2) Turn the switch OFF and ON several times, and check that there are no problems with
rotation direction or operating conditions.
Note
The correct rotational direction is clockwise looking from the motor.
(3) When the specified speed is reached, gradually open the discharge valve, and begin
continuous operation.
(4) Check that there are no problems with pressure, current, vibrations, noise, etc. (In addition,
refer to 7. Maintenance.) Keep pressure gauges, compound pressure gauges and other
valves closed except during measurement. Damage can easily result if they are left open.
(5) For the 2nd and subsequent operations of the pump, refer to 7. Maintenance, and if there
are no problems start operation immediately.
Note
Operate at a capacity appropriate to the equipment. (Under- or
over-operation may result in noise and vibrations. Further, unnecessary
power consumption will result.)
Avoid operation in the state of cavitation occur. Over capacity-operation
may result in cavitation. Cavitation is considered when vibration or noise
occurs or specified capacity (pressure) can’t be achieved. Turn down
discharge valve to reduce capacity.
3. Stopping
(1) When stopping operation, gradually close the discharge valve and then stop the motor.
(2) If there is no check valve at the discharge side, reverse flow occurs from the discharge side to
the suction side. Therefore, completely close the discharge valve.
4. Operation cautions
(1) If the pump is operated for long periods with the discharge valve closed, the water
temperature inside the pump will rise, causing an accident. Do not operate the pump with the
discharge valve closed for longer than 1 minutes.
(2) Starting and stopping the pump repeatedly at short intervals will harm it and shorten its
service life.
Note
Motor output
7.5kW or less
11kW～22kW
30kW or more
Start frequency
Less than 6 times an hour
Less than 4 times an hour
Less than 3 times an hour

EVMS/EVMSL
- 17 -
EBARACORPORATION
７
Maintenance
Warning
Do not touch the rotating parts such as the spindle, shaft
couplings, V-pulleys, etc. while the pump is running. Since
these parts rotate at high speed, doing so could result in injury.
Disassembly and repair of the pump should only be performed
by specialist maintenance technicians. Otherwise, error by
personnel could result in electric shock, and the pump catching
fire or operating abnormally and causing injury.
Always turn the power switch OFF before inspecting or
repairing the pump. Not doing so could result in the pump
starting up suddenly in auto operation, exposing personnel to
danger.
If there is a power failure, turn the power switch off.
Otherwise, the pump may start-up suddenly when the power
supply is resumed, exposing personnel to danger.
Caution
Do not touch the pump when the liquid handled is hot water.
Burns may result from high temperatures.
Do not touch the motor. The motor’s surfaces will be hot, and
you could get burned if you touch them.
To prevent an accident if the pump stops running or an
abnormality occurs, immediately turn off the power switch.
Contact the shop from where you ordered the pump, or EBARA
to perform an inspection and maintenance on the pump.
When the pump is out of use for prolonged periods such as the
wintertime, water inside the pump could freeze, causing
damage to the pump. Accordingly, in such situations, either
drain all water from the pump or provide thermal insulation to
prevent the water from freezing.
Note
Please put repair painting into effect in a period according to the use
environment. A screw department, the processing department which
applied rust killer and a corrosion prevention painting department are the
use environment of high humidity dew condensation and sometimes
generate rust.
1. Daily inspection
(1) As abnormalities with pressure, current, capacity, vibration, sound, etc. are signs of a failure,
it is important to refer to 8. Troubleshooting and take steps as soon as possible. For this
reason, please keep an operations log.
Note
EBARA has prepared pump standard performance tables. Please request a
copy.
(2) The bearing allowable temperature is 110℃or below. For sealed ball bearing types, refer to
paragraph4.Consumable parts. Expendables in this chapter.
(3) It is necessary to remove coupling guard from pump In order to be sure the water leaks from
shaft seal.
(4) Shaft seal is a mechanical seal, therefore there is almost no leakage when it is operating
normally. Even when a little leak is accepted at the time of an operation start, if operation is
kept for a while in the state, a leak will decrease. When a leak still does not stop, please stop
operation and check.

EVMS/EVMSL
- 18 -
(5) Standard values of vibration for when the
pump and piping have been installed
correctly are shown in the figure at right. If
vibration exceeds these standard values,
inspect the pump and piping to determine the
cause. Probable causes are strains in the
piping and loose anchor bolts. Ebara offers
Ebara vibration absorber frames, Ebara flex
joints, and Ebara pipe silencers (pressure
pulsation absorbers); if vibration absorption
measures are necessary, the user may want
to order these items.
Application : Size  32～  50
(6) Please make sure there are no loose mounting bolts of the equipment, the terminal screw of
the electrical wiring.
(7) Please measure the insulation resistance of the motor once a month. If insulation resistance
is 5MΩ or more, it does not interfere with driving. When insulation resistance is 1MΩ or less
or 5MΩ or more but suddenly decreasing, it can be guessed the motor is abnormal, so please
repair the pump.
2. Long-term pump stoppage and storage
(1) If you have installed a spare pump, run it from time to time and keep it in good condition so
that it is ready for use at any time.
(2) If a pump is left out of use for prolonged periods in the wintertime or in cold climates, water
inside the pump could freeze, causing damage to the pump. Accordingly, in such situations
provide thermal insulation for the pump, or drain the water from its interior.
(3) If it is not to use for a long period (3 months or more), turn off the power.
(4) If the pump haven’t driven for a long period (3 months or more), before driving again, please
check as same as at installation.

EVMS/EVMSL
- 19 -
EBARACORPORATION
3. Consumable parts
(1) Replace the parts according to the conditions shown in the table below.
Consumable
part
O-ring
Mechanical seal
Pump interior
bearings
Sealed ball bearing
Replacement
condition
Every time
pump is
disassembled
Large amount
of leakage
If noise or vibration
becomes severe
・Large or abnormal noises occur
・Grease leaks out
Replacement
interval

Once per year or
every 8,000 hours
Once per year
(depending on use
conditions)
Once every 2 - 3 years
(depending on use conditions or
every 10,000 hours.)
(2) A table of dimensions for consumable parts is shown below.
O-ring
Part name
Pump size
For outer casing
For flange
25,32
 5.34×129.54
Not applied
(Sheet gasket)
40,50
 5.34×164.46
Not applied
(Sheet gasket)
Cartridge mechanical seals Pump interior bearings
Pump
size
Frequency
Hz
Mechanicalseal
Part name
Pump size
Bearing
Sleeve
Intermediate casing for bearings
25
50
12×16F－25k
EVMS
EVMSL
60
12×16F－25k
25
 12×  16×10
5×21B1-30.6-304
5×21B1-27.1-316
32
50
12×16F－25k
32
5×28B1-33.3-304
5×28B1-33.3-316
60
12×16F－25k
40
 16×  20.5×14.4
7×30B1-48-304
7×30B1-48-316
40
50
16×20F－25k
50
7×40B1-48-304
7×40B1-48-316
60
16×20F－25k
50
50
16×20F－25k
60
16×20F－25k
Sealed ball bearings (inside motor)
Part name
Sealed ball bearings
Motor output (kW)
Load side
Opposite side
Grease
0.37
6203 ZZ C3
6203 ZZ C3
Lithium heat
resistant grease
0.55
6203 ZZ C3
6203 ZZ C3
0.75
6204 ZZ C3
6204 ZZ C3
1.1
6204 ZZ C3
6204 ZZ C3
1.5
6205 ZZ C3
6304 ZZ C3
2.2
6205 ZZ C3
6304 ZZ C3
3.0
6207 ZZ C3
6305 ZZ C3
4.0
6207 ZZ C3
6305 ZZ C3
5.5
6308 ZZ C3
6306 ZZ C3
7.5
6308 ZZ C3
6306 ZZ C3
11
6310 ZZ C3
6208 ZZ C3
15
6310 ZZ C3
6208 ZZ C3
18.5
6310 ZZ C3
6208 ZZ C3
The replacement intervals shown above are as guide line for normal operation.

EVMS/EVMSL
- 20 -
８
Troubleshooting
Trouble
Cause
Remedy
Motor won’t turn.
Motor growls and
won’t turn
The motor is damaged.
Repair the motor.
Power supply abnormality.
Inspect and repair.
Rotating parts in contact. Rust. Burning.
Manually rotate. Re-assemble. Have repaired by a
specialist workshop.
Foreign material caught in the contacting surfaces.
Remove the foreign material.
Pump operates,
but no water is
discharged.
Water is not
discharged at the
rated capacity.
Pump not primed.
Prime the pump.
Gate valve is closed or half open.
Open the gate valve.
Reverse rotation direction.
Check the rotation arrow, and correct the wiring.
Pump speed too low.
* Motor has wrong number of poles.
* 60 Hz pump used in 50 Hz power supply area.
* Voltage drop has occurred.
* Consult nameplate data and replace motor with
correct one.
* Consult nameplate data and replace correct pump.
* Check the power supply.
Impeller is clogged with foreign matter.
Remove the foreign material.
Piping is clogged with foreign matter.
Remove the foreign material.
Foot valve and/or strainer is clogged with foreign
matter.
Remove the foreign material.
Air is being sucked in.
Inspect, repair suction piping and shaft seal.
Foot valve or end of suction piping is not properly
submerged in the water.
Extend suction piping so that foot valve / end of
piping to be submerged at least 2 times deeper than
the diameter of the piping.
Leakage from discharge piping.
Inspect, repair.
Impeller is corroded.
Check the fluid, change material.
Impeller is worn.
Replace the impeller.
Wear ring is worn.
Replace wear ring.
Large loss in the piping.
Review the plan.
Suction head is too high for the pump.
Discharge head is too high for the pump.
Review the plan.
High fluid temperature or volatile fluid.
Review the plan.
Cavitation.
Consult with EBARA.
Water is
discharged,
but stops.
Not primed sufficiently.
Sufficiently prime the pump.
Air is being sucked in.
Inspect, repair suction piping and shaft seal.
Air is trapped inside the suction piping.
Refit the piping.
Suction head is too high for the pump.
Review the plan.
Overload (over
current) occurs.
Voltage has dropped or phase imbalance is large.
* Head is low. Too much water flow.
* 50 Hz pump in a 60 Hz region.
* Consult nameplate and replace motor with correct
one.
* Consult nameplate and replace correct pump.
Head is too low. Discharge capacity is too high.
Turn down discharge valve to adjust to prescribed
capacity.
Bearing is damaged.
Replace bearing.
Rotating parts in contact. Shaft is bent.
Consult with EBARA.
Fluid specific gravity, viscosity is too great.
Review the plan.
Bearing heats up
Bearing is damaged.
Replace bearing.
Pump is operated for prolonged period at shut-off
pressure.
Stop shut-off pressure operation.
Pump vibrates.
Loud operation
noise.
Bearing is damaged.
Replace bearing.
Discharge capacity is too high.
Turn down discharge valve to adjust to prescribed
capacity.
Impeller is clogged with foreign matter.
Remove the foreign material.
Reverse rotation direction.
Check the rotation arrow, and correct the wiring.
Pump is operated for prolonged period at shut-off
pressure.
Stop shut-off pressure operation.
Rotating parts in contact. Shaft is bent.
Consult with EBARA.
Cavitation.
Consult with EBARA.
Piping vibrates.
Rectify the piping.
More leakage from
the shaft seal.
Mechanical seal is damaged.
Replace mechanical seal.
Suction pressure is too high.
Review the plan.