Nippon Oil Pump NOP E Series ES Operator's manual

E
EE
ES
SS
S201
201201
20190
9090
907
77
7EN
ENEN
EN
E
EE
E-
--
- Series E
Series ESeries E
Series ES
SS
S
User’s
User’sUser’s
User’s Instruct
InstructInstruct
Instruction Manual
ion Manualion Manual
ion Manual
Read this manual carefully and thoroughly for the correct and
optimum use of NOP coolant unit. Improper use of the pump can
cause personal injury and damage to property and may void the
warranty.
Save this manual for future reference, and keep
Save this manual for future reference, and keep Save this manual for future reference, and keep
Save this manual for future reference, and keep
it readily available
it readily available it readily available
it readily available
Important
ImportantImportant
Important

1
E
EE
E-
--
- Series E
Series ESeries E
Series ES
SS
S User’s Instruction Manual
User’s Instruction Manual User’s Instruction Manual
User’s Instruction Manual
＜
＜＜
＜Contents
ContentsContents
Contents＞
＞＞
＞
For Safe Operation
For Safe OperationFor Safe Operation
For Safe Operation ................................
................................................................
................................................................
................................................................
................................................................
................................................................
.................................................
..................................
................. 2
22
2
Safety Precautions
Safety PrecautionsSafety Precautions
Safety Precautions ................................
................................................................
................................................................
................................................................
................................................................
................................................................
..................................................
....................................
.................. 5
55
5
●Safety Equipment .................................................................................................................. 5
●Safety Measures .................................................................................................................... 5
Model Numbering Sy
Model Numbering SyModel Numbering Sy
Model Numbering System
stemstem
stem ................................
................................................................
................................................................
................................................................
................................................................
................................................................
.......................................
..............
....... 6
66
6
Pump Installation
Pump InstallationPump Installation
Pump Installation ................................
................................................................
................................................................
................................................................
................................................................
................................................................
....................................................
........................................
.................... 6
66
6
●Installation Site ...................................................................................................................... 6
●Required Space for Installation ............................................................................................. 8
●Recommended Installation Circuit. ........................................................................................ 8
Position of Pump Inlet Port
Position of Pump Inlet PortPosition of Pump Inlet Port
Position of Pump Inlet Port ................................
................................................................
................................................................
................................................................
................................................................
................................................................
......................................
............
...... 8
88
8
Filters
FiltersFilters
Filters ................................
................................................................
................................................................
................................................................
................................................................
................................................................
................................................................
................................................................
......................................
............
...... 9
99
9
●Performance of Turbulence Filter .......................................................................................... 9
Contaminant Drain Line
Contaminant Drain LineContaminant Drain Line
Contaminant Drain Line ................................
................................................................
................................................................
................................................................
................................................................
................................................................
........................................
................
........ 10
1010
10
Outlet Port
Outlet PortOutlet Port
Outlet Port ................................
................................................................
................................................................
................................................................
................................................................
................................................................
............................................................
........................................................
............................ 11
1111
11
Piping for the Pump
Piping for the PumpPiping for the Pump
Piping for the Pump ................................
................................................................
................................................................
................................................................
................................................................
................................................................
..............................................
............................
.............. 12
1212
12
●Torque Applied on Pipe Connection .................................................................................... 12
●Connecting the Pipes .......................................................................................................... 12
●Pipes and Pipe Joints .......................................................................................................... 12
Electric Wiring
Electric WiringElectric Wiring
Electric Wiring ................................
................................................................
................................................................
................................................................
................................................................
................................................................
.......................................................
..............................................
....................... 13
1313
13
For Operation
For OperationFor Operation
For Operation ................................
................................................................
................................................................
................................................................
................................................................
................................................................
........................................................
................................................
........................ 13
1313
13
●Start-up Checklist ................................................................................................................ 13
●Test Run .............................................................................................................................. 13
Inspections
InspectionsInspections
Inspections ................................
................................................................
................................................................
................................................................
................................................................
................................................................
...........................................................
......................................................
........................... 14
1414
14
●Daily Startup Inspections ..................................................................................................... 14
●Periodical Inspections .......................................................................................................... 14
Storage
StorageStorage
Storage ................................
................................................................
................................................................
................................................................
................................................................
................................................................
................................................................
................................................................
.................................
..
. 14
1414
14
Warranty
WarrantyWarranty
Warranty ................................
................................................................
................................................................
................................................................
................................................................
................................................................
...............................................................
..............................................................
............................... 15
1515
15
For Selecting a Pump
For Selecting a PumpFor Selecting a Pump
For Selecting a Pump ................................
................................................................
................................................................
................................................................
................................................................
................................................................
...........................................
......................
........... 15
1515
15
●Operating Method ................................................................................................................ 15
●Required Flow Rate ............................................................................................................. 15
●Required Pressure ............................................................................................................... 15
●Relief Valve Pressure Setting. ............................................................................................. 15
●Selecting Coolant Type and Viscosity Range. .................................................................... 15
●Operating Ambient Temperatures ....................................................................................... 16
●Fluid Temperature Range .................................................................................................... 16
●Compatible Work Materials. ................................................................................................ 16
Motor Selection
Motor SelectionMotor Selection
Motor Selection ................................
................................................................
................................................................
................................................................
................................................................
................................................................
.....................................................
..........................................
..................... 17
1717
17
●Required Power for the Pump. ............................................................................................ 17
● Voltage and Frequency ...................................................................................................... 17
Suction Performance
Suction PerformanceSuction Performance
Suction Performance ................................
................................................................
................................................................
................................................................
................................................................
................................................................
............................................
........................
............ 18
1818
18
Internal Structure
Internal StructureInternal Structure
Internal Structure ................................
................................................................
................................................................
................................................................
................................................................
................................................................
..................................................
....................................
.................. 18
1818
18
Troubleshooting Guide
Troubleshooting GuideTroubleshooting Guide
Troubleshooting Guide ................................
................................................................
................................................................
................................................................
................................................................
................................................................
..........................................
....................
.......... 19
1919
19
Backwashing
BackwashingBackwashing
Backwashing................................
................................................................
................................................................
................................................................
................................................................
................................................................
.........................................................
..................................................
......................... 20
2020
20

2
F
FF
For
or or
or S
SS
Safe
afe afe
afe O
OO
Operation
perationperation
peration
Be sure to understand the safety regulations and follow the precautions and
operating instructions stated in this manual for safe operation.
When you see the following symbols and titles in this manual, be alert to the
potential for personal injury or property damage.
This manual uses the following symbols and titles to identify the risk and danger
levels.
Danger:
Danger:Danger:
Danger:
A hazardous situation which, if not avoided, may result in death or
serious injury.
Warning:
Warning:Warning:
Warning:
A hazardous situation which, if not avoided, could result in death or
serious injury.
Caution:
Caution:Caution:
Caution:
A hazardous
situation which, if not avoided, could result in injury or
equipment damage.
Danger
DangerDanger
Danger
Do not operate the
equipment
in a place having
a
risk of explosion or
extremely dusty
place. Do not place any flammable liquids or materials in the area surrounding the
motor. Such items could
cause explosion or
fire.
Make sure that the power is disconnected before install
ation
, maintenance or
inspections to avoid the risk of electric
shock.
Transporting, installation, plumbing, wiring, operation, or maintenance work must be
operated by personnel specifically knowledgeable in the respective task, and any
legally regulated work must be performed by personnel properly qualified under the
related law.
Warning
WarningWarning
Warning
Getting your fingers, hands or articles
caught in rotating or moving parts
may cause
an
unexpected injury.
The motor and pump surface may heat up while in an operation. Be careful not to
touch the
pump and motor while/or immediately after an operation.
Ensure
the power is disconnected
prior to any wiring works. T
ake measures to avoid
accidental power
-
on.
Be sure to follow the instruction of the motor wiring diagram to prevent fire and
electrical leakage.
Ground the equipment properly to prevent fire and electrical shocks due to electrical
leakage.
The pump cannot be used for gasoline and other volatile liquids. They may cause an
explosion or fire.
Do not pump fluid over the
specified temperature range. Leaked fluid may cause
burns.

3
Caution
CautionCaution
Caution
Be sure to use “Earth-Leakage Circuit Breaker (ELCB)” and overload protection
device
to avoid a dam
age to the equipment or motor burnout.
NOP coolant unit must not be operated outdoor.
Hoist the pump
at designated lifting points. C
heck lifting points on
the
drawing.
Assembling the pump in a wrong orientation will damage the motor. Install the pump
unit
in
an
up
-
right position.
If the installation site is not level or if there is forcible installation in which the
installation holes are not in exact alignment, the pump might be damaged due to
vibrati
on
.
Tramp oil or foam
may affect the pump performance. NOP coolant unit must not be
installed
in
such
environment
.
A pre-filtration device, such as a plate (screen-type) filter must be installed
to remove
the large objects prior to the pump inlet. Recommended filter mesh size
is 18 (about
1mm sieve size).
Suction of excessive amount of needle-like or wool-like metal chips
may cause clogging
on inlet port
and
Turbulence
filter even when their particle sizes are smaller than 3 mm.
If you install additional in-line filter onto the outlet line, clean it regularly. Clogged filters
affect the pump performance and abnormal noise, vibration or flow deficiency may
occur
.
Tramp oil or foam may affect Turbulence
filter performance. Installation of partition plate
as illustrated in figure 6
on P.10
is recommended.
Diameter of contaminant drain piping must be the
same as /or larger than contaminant
drain port. Contaminant dra
in piping must not be higher than 1 M from the ground and
not be longer than 3 M horizontally. T
he piping must be as short as possible. (PVC
piping is recommended). See figure 7
on
P
.
11
for the sample piping layout.
Inspect all valves, cocks, joints and the like before installation
to avoid using any
component that has a cavity
in the casting.
Do not narrow the contaminant drain port. Excessive flow restriction( ≦20L/min) may
decrease the pump performance
and damage the pump
.
A gate valve is highly recommended for a contaminant drain line
Contaminant drain line must be assembled below the coolant surface level as shown
on figure 7 on P.11 to ensure that air doesn’t enter the system.
The pumps can make louder noise at the first run but will stop once the trapped air in
a contaminant drain port is fully released.
Make sure there is no blocking or clogging in contaminant drain line.
Do not return contaminant drain piping into the coolant tank.
Be sure to follow the instruction of torque control.

4
Caution
CautionCaution
Caution
Do not use liquid type sealant. Avoid using too much
sealant tape. Excess use of
sealant tape may result in over-torque and damage the port.
Do not attempt to flush out piping if already assembled with the pump.
Airtight test must be completed before installation.
Do not run the pump in reverse direction.
Do not run the pump dry over 10 second
Be sure to bleed an outlet piping of air on a initial run.
If any abnormalities are discovered, stop the pump immediately and inspect for the
defective areas. (See Table 5 P.19)
Do not run the pump over the maximum pressure setting.
Do not remove the return pipe, or it may cause foam and abnormal sounds
Consult your coolant manufacturer (or distributor) for the compatibility with fluoro
carbon rubber, the material of the pump seal, in advance to avoid leakage.
Operate the pump within the specified temperature range.
See “Operating Ambient Temperatures” and “fluid temperature range” on P.16
Keep the viscosity of your coolant within the specified range.
See “Table 4
:
Compatible Coolant Type and Viscosity Range on
P.16
.
Do not use work materials harder than HV600. Extremely hard materials, such as
Inconel, Titanium, Tungsten, can drastically shorten the pump service
-
life.
Do not use hardened steel, carbon fiber, glass fiber containing materials, carbon
materials. Those materials can drastically shorten your pump service
-
lif
e.
Do not use film or resin coating materials. Those materials can lead to poor filter
performance and
Turbulence
filter clogging
Do not operate the pump in a fluid containing a large amount of grindstones or
abrasive grains. They can drastically shorten your pump service-life.
Do not apply wrong supply voltage or frequency.
Keep the motor rotation speed within the specified range. (1000 min
-1
to 2000 mm
-1
)
Make sure that there is no excess resistance in outlet line. It will affect the pump
suction performance.
Make sure there is no trapped air in inlet line. It may decrease the performance of
Turbulence filter, cause filter clogging and damage the pump.
Clean the perforations of the inlet port at regular intervals. Clogged inlet will cause
abnormal noise, vibration, discharge failure, which result in the pump damage.
Make sure there is no tramp oil accumulation or foam on the coolant surface.
Backwashing will not recover filtration performance of a pump completely.
Constant filter clogging suggests that the pump might be operated beyond the
specifications.

5
Safety Precautions
Safety Precautions Safety Precautions
Safety Precautions
●
●●
●S
SS
Safety Equipment
afety Equipmentafety Equipment
afety Equipment
・Be sure to equip motor with an “Earth-Leakage Circuit Breaker (ELCB)” or
overload protection equipment.
・Use this equipment only after confirming that the ratings are within the prescribe
ratings stated on the motor’s name plate.
・Be sure to comply with local electrical codes and regulations.
Caution:
Caution: Caution:
Caution:
Be sure to use “Earth-
Leakage Circuit Breaker (ELCB)” and
overload protection device to
avoid a damage to the equipment or
motor burnout.
・Install a galvanometer, pressure sensor, or such other devices in the pump’s
outlet line to avoid dry running.
・The oil seals and packings cannot be used perpetually.
・To prevent motor damage from coolant leak, it is recommended to insert a drain
hose into seal drain hole.
・To avoid motor damage, drain hose should be inserted in a way that the coolant
can naturally flow down with its own weight through the hose.
・Install the pump in a safe location, or provide a protective cover or device to avoid
accidental coolant leakage.
●
●●
●Safety Measures
Safety MeasuresSafety Measures
Safety Measures
・Keep children or other people incapable of judging risks away from the pumps.
・Install protective device to prevent fingers, hands or other objects from getting
caught in the rotating or moving parts.
Warning
Getting your fingers, hands or articles caught in rotating or
moving parts may cause an unexpected injury
・Do not touch a pump or motor during or immediately after the operations.
Warning
The motor and pump surface may heat up while in an operation.
Be careful not to touch the pump and motor while/or
immediately after an operation.
Danger
Do not operate the pump in a place having a risk of explosion or
extremely dusty place. Do not place any flammable liquids or
materials in the area surrounding the motor. Such items could
cause explosion or fire.

6
M
MM
Model Numbering System
odel Numbering Systemodel Numbering System
odel Numbering System
Pump
Pump Pump
Pump I
II
Installation
nstallationnstallation
nstallation
●
●●
●Installation
Installation Installation
Installation S
SS
Site
iteite
ite
Caution NOP coolant unit must not be operated outdoor.
Caution
Hoist the pump at designated lifting points. Check the lifting points
on the drawing.
Caution
Assembling the pump in a wrong orientation will damage the
motor. Install the pump unit in an up-right position.
Caution
If the installation site is not level or if there is forcible installation
in which the installation holes are not in exact alignment, the
pump might be damaged due to vibration.
Caution
Tramp oil or foam may affect the pump performance. NOP
coolant unit must not be installed in such environment.
F
FF
Figure
igureigure
igure1
11
1：
：：
：Pump Mounting Pattern
Pump Mounting PatternPump Mounting Pattern
Pump Mounting Pattern
E
EE
E series E
series Eseries E
series ES
SS
S

7
Figure 2
Figure 2Figure 2
Figure 2：
：：
：Dimensional drawing (Typical / Motor type: A3)
Dimensional drawing (Typical / Motor type: A3)Dimensional drawing (Typical / Motor type: A3)
Dimensional drawing (Typical / Motor type: A3)
D
DD
D
rain
rainrain
rain
D
DD
D
rain
rainrain
rain

8
●
●●
●R
RR
Required Space for Installation
equired Space for Installationequired Space for Installation
equired Space for Installation
Do not install NOP coolant unit in ,
extremely dusty, high, or low
temperatures location.
(See P.16 for “Operating ambient
temperatures”)
Provide minimum clearances as
illustrated in the figure 3 to ensure
the space for maintenance work.
●
●●
●Recommended
Recommended Recommended
Recommended I
II
Installation
nstallation nstallation
nstallation C
CC
Circuit.
ircuit. ircuit.
ircuit.
It is recommended to install a
circuit as illustrated below for safe
and efficient operation, particularly,
piping for air-bleeding in the
pump’s outlet line.
Position of
Position of Position of
Position of P
PP
Pump
ump ump
ump I
II
Inlet
nlet nlet
nlet P
PP
Port
ortort
ort
Mount the pump in the tank at least 1 mm
above the tank floor. This is to ensure
enough clearance to prevent the pump
from sucking the sediments of sludge or
metal chips on the tank floor.
To prevent the pump from drawing air,
install the pump in the tank water deeper
than 60 mm as illustrated in figure 5.
Dimension
C1
> D＋30 mm
C2
> 200 mm
C3
> 50 mm
D
Pump height below
the top of tank
Figure 3:
Figure 3: Figure 3:
Figure 3: C
CC
Clearances
learances learances
learances Required A
Required ARequired A
Required Around
round round
round
the
the the
the P
PP
Pump
umpump
ump (Typical )
(Typical )(Typical )
(Typical )
Figure 4
Figure 4Figure 4
Figure 4：
：：
：Recommended
Recommended Recommended
Recommended A
AA
Air
ir ir
ir B
BB
Bleeding
leeding leeding
leeding C
CC
Circuit
ircuitircuit
ircuit (Typical)
(Typical)(Typical)
(Typical)
Figure
Figure Figure
Figure 5
55
5：
：：
：G
GG
Gap under the Pump Bottom
ap under the Pump Bottom ap under the Pump Bottom
ap under the Pump Bottom (Typical)
(Typical)(Typical)
(Typical)

9
F
FF
Filters
iltersilters
ilters
Caution
Remove the large objects with pre-filtration device, such as a plate
(screen-type) filter before the pump inlet. Recommended filter
mesh size is 18 (about 1mm sieve size).
All foreign objects larger than the perforations of the inlet port (3 mm) must be
pre-filtered. If you require higher filtration accuracy than shown in Table 1, install
additional in-line filter in the outlet line.
●
●●
●P
PP
Performance of
erformance of erformance of
erformance of Turbulence
TurbulenceTurbulence
Turbulence F
FF
Filter
ilterilter
ilter
T
TT
Table.1
able.1 able.1
able.1 F
FF
Filtration
iltration iltration
iltration P
PP
Performance
erformanceerformance
erformance
* Straight oil is only applicable to 50 μm filter.
Caution
Suction of excessive amount of needle-like or wool-like metal
chips may cause clogging on inlet port, Turbulence filter even
when their particle sizes are smaller than 3 mm.
Caution
If you install additional in-line filter in the outlet line,
clean it
regularly. Clogged filters affect the pump performance and
abnormal noise, vibration or flow deficiency may occur.
Caution
Tramp oil or foam may affect Turbulence filter performance.
Installation of partition plate like illustrated in figure 6 on P.10 is
recommended.
Inlet port 3mm (Solids larger than 3mm must be
removed from the tank.)
Turbulence filter
(Nominal value)
20 µm
50 µm*

10
Figure 6 : Method for
Figure 6 : Method for Figure 6 : Method for
Figure 6 : Method for P
PP
Preventing
reventing reventing
reventing S
SS
Suction of
uction of uction of
uction of T
TT
Tramp
ramp ramp
ramp O
OO
Oil
il il
il (Typical)
(Typical)(Typical)
(Typical)
Contaminant
Contaminant Contaminant
Contaminant D
DD
Drain
rain rain
rain L
LL
Line
ineine
ine
・After filtered by Turbulence filter, clean coolant will be delivered from the outlet
port while the dirty coolant will be discharged from the contaminant drain port.
・Collect the metal chips discharged from the contaminant drain port by bucket,
magnet separator or some other devices. It will help maintain the tank coolant
clean.
Table 2
Table 2Table 2
Table 2 :
: :
: Contaminant
Contaminant Contaminant
Contaminant D
DD
Drain
rain rain
rain P
PP
Port
ort ort
ort P
PP
Performance (for reference only)
erformance (for reference only)erformance (for reference only)
erformance (for reference only)
＊
＊＊
＊
Flow rate 30 to 40 L/min
Pressure 0.02 MPa
＊
The values above are for reference only and not for guaranteeing the performance.
Caution
Diameter of contaminant drain piping must be the same as /or
larger than contaminant drain port.
Contaminant drain piping must not be higher than 1 M from the
ground and not be longer than 3 M horizontally. T
he piping must
be as short as possible. (PVC piping is recommended).
See figure 7 on P.11, for the sample piping layout.
Caution
Inspect all valves, cocks, joints and the like before installation to
avoid using any component that has a cavity in the casting.
L
LL
LAYER OF
AYER OF AYER OF
AYER OF
TRAMP OIL
TRAMP OILTRAMP OIL
TRAMP OIL
P
PP
PARTITION
ARTITIONARTITION
ARTITION

11
Caution
Do not narrow the contaminant drain port. Excessive flow
restriction( ≦20L/min) may decrease the pump performance and
damage the pump.
Caution A gate valve is highly recommended for a contaminant drain line.
Caution
Contaminant drain line must be assembled below the coolant
surface level as shown on figure 7, to ensure that air doesn’t
enter the system.
Figure 7
Figure 7Figure 7
Figure 7：
：：
：Recommended
Recommended Recommended
Recommended P
PP
Piping
iping iping
iping L
LL
Layout
ayout ayout
ayout to
toto
to Avoid
Avoid Avoid
Avoid A
AA
Air
ir ir
ir Entering
Entering Entering
Entering into
into into
into the
the the
the System
SystemSystem
System.
..
.
Caution
The pumps can make louder noise at the first run but will stop
once the trapped air in a contaminant drain port is fully released.
Caution
Make sure there is no blocking or clogging in contaminant drain
line.
Caution Do not return contaminant drain piping into the coolant tank.
Outlet
Outlet Outlet
Outlet P
PP
Port
ort ort
ort
・ Outlet line pipes must be as large as the outlet port diameter and pressure
resistant type.
・ Install a check valve in the outlet line near the port to reduce the time lag from
motor start-up to coolant discharge and to prevent rust inside the pump.
・ Pump and pipes must be filled with fluid at all times.

12
Piping for the Pump
Piping for the PumpPiping for the Pump
Piping for the Pump
●
●●
●Torque Applied on
Torque Applied on Torque Applied on
Torque Applied on Pipe Connection
Pipe ConnectionPipe Connection
Pipe Connection
* For pipe connections with NOP coolant unit, follow the maximum permissible
torques shown below
Table 3
Table 3Table 3
Table 3 :
: :
: Maximum
Maximum Maximum
Maximum P
PP
Permissible
ermissible ermissible
ermissible T
TT
Torque by the
orque by the orque by the
orque by the P
PP
Pipe
ipe ipe
ipe S
SS
Size
izeize
ize
Pipe size, R
Pipe size, RPipe size, R
Pipe size, R
1/2
1/21/2
1/2”
””
” 3/4
3/43/4
3/4”
””
”
Torque N·m
Torque N·mTorque N·m
Torque N·m 25
2525
25 30
3030
30
Caution
Be sure to follow the instruction of torque control above.
Caution
Do not use liquid type sealant. Do not use sealant tape too
much. Excess use of sealant tape may result in over-torque and
damage the port.
●
●●
●Connecting the
Connecting the Connecting the
Connecting the P
PP
Pipes
ipesipes
ipes
・ To prevent leaks and air entry, make sure all pipe connections are securely
tightened and completely sealed.
・B e sure to use pipe-supports so that the pipes are self-supported and no
weight will be placed on the pump.
・Make sure that the pipe lengths and angles are correct when assembled so that
no unnecessary strain is placed on the pump.
・Installation of a pressure gauge is highly recommended as pump conditions can
be easily monitored.
・ Installation of a stop valve, union joints, and such other fittings are also
recommended for easy maintenance.
・ Some of the high-pressure hoses and other parts may have narrow internal
diameters. Be sure to check not only the inner diameter of screw-in sections but
the whole area of the pipe as well before use.
・ Installation of an air vent circuit in the outlet line is recommended to avoid
possible startup troubles.
●
●●
●Pipes and
Pipes and Pipes and
Pipes and P
PP
Pipe
ipe ipe
ipe J
JJ
Joints
ointsoints
oints
Be sure to flush out all pipes to ensure that they are thoroughly cleaned before
use.
Caution
Do not attempt to flush out piping if already assembled with the
pump
.
Caution Airtight test must be completed before installation.

13
Electric
Electric Electric
Electric W
WW
Wiring
iringiring
iring
Electric wiring must be carried out by qualified personnel.
Warning
Make sure that
the power is disconnected
before beginning to
work on wiring. Also take measures to avoid accidental power-
on.
Warning
Be sure to follow the instruction of the motor wiring diagram to
prevent fire and electrical leakage.
Warning
Ground the equipment properly to prevent fire and electrical
shocks due to electrical leakage.
・ Check the direction of the motor rotation. If using NOP’s pre-installed motor
(which is specially customized to work with NOP pump), the motor rotation is
indicated on the wiring plate on the motor frame or terminal box. Connect the
motor accordingly.
(Our NOP’s pre-installed motor (a 3-phase type) is, when viewed from the
suction side, designed to rotate in counter-clockwise if wired as illustrated in
figure 8 below.)
Figure 8
Figure 8Figure 8
Figure 8：
：：
：Motor
Motor Motor
Motor W
WW
Wiring
iring iring
iring D
DD
Diagram
iagramiagram
iagram
For
For For
For O
OO
Operation
perationperation
peration
●
●●
●Start
StartStart
Start-
--
-up
up up
up C
CC
Checklist
hecklisthecklist
hecklist
・ Is the tank filled with coolant up to,
or over the specified level? (See Figure 5, P.8)
・ Are the inlet, outlet and drain ports unblocked?
・ Is there any loose sections in piping?
・On the initial startup, turn the pump on and off quickly to confirm that the motor
is running in the correct direction.
Caution Do not run the pump in reverse direction.
●
●●
●T
TT
Test
est est
est R
RR
Run
unun
un
Caution
Do not run the pump dry over 10 second.
Caution
Be sure to bleed an outlet piping of air on a initial run.

14
Inspections
InspectionsInspections
Inspections
●
●●
●Daily Startup Inspections
Daily Startup InspectionsDaily Startup Inspections
Daily Startup Inspections
Check for coolant leakage, abnormal sound, and heating.
Caution If any abnormalities are discovered, stop the pump immediately
and inspect for the defective areas. (See Table 5, P.19)
●
●●
●Periodical
PeriodicalPeriodical
Periodical Inspections
InspectionsInspections
Inspections
・Periodical inspection must be performed at least once a year.
＜Periodical inspection checklist>
Periodical inspection checklist>Periodical inspection checklist>
Periodical inspection checklist>
・Flow rate, pressure in outlet port
・Flow rate in contaminant drain port (Guideline: 20 L/min, minimum)
・Clogging of contaminant drain port
・Clogging of the inlet port (perforated metal)
・Leaks from pipe connecting parts
・Minimum coolant level in the tank (Keep the level high enough to prevent air entry)
・Amount of contaminant in the tank (It is recommended to perform tank cleaning
at least once in a half year)
・Concentration level of the coolant (Keep the level within the range specified by
the coolant manufacturer)
・The viscosity of straight oil (Oil viscosity must be below 32 mm
2
/s )
・Fluid temperature (-5℃ to +60℃)
・Over-heating of pump motor
Storage
StorageStorage
Storage
・It is always good to keep replacement parts on hand (pump, motor and coupling)
to minimize downtime due to unexpected pump failure or deterioration.
・ Be sure to perform a periodical inspection.
(See “Periodical inspection” above)
・ If the pump is to be stored for an extended period of time, take the following
steps to protect the pump against the internal rust.
①Pump lubricating oil of 15 mm
2
/s or less viscosity for three minutes to wet
inside the pump.
②Put lids on the ports, wrap the unit in a plastic bag, sealed it air-tight and
store.
・ If storing for six months or longer, check for exterior rust and free rotation once
a month.
・ If you reuse the pump long after storage, check for unusual noise, heating, and
other abnormalities on the first run. When any of these mentioned above
occurs, stop operation immediately.
Danger
Make sure that the power is disconnected before installation,
maintenance or inspections to avoid the risk of electric shock.

15
W
WW
Warranty
arrantyarranty
arranty
・ NOP coolant unit is warranted to be free from defects in workmanship and
materials for one year
one year one year
one year from the date we ship to
from the date we ship to from the date we ship to
from the date we ship to customer’s designated location,
customer’s designated location, customer’s designated location,
customer’s designated location,
or 5000 hours of
or 5000 hours of or 5000 hours of
or 5000 hours of operation, whichever occurs first
operation, whichever occurs firstoperation, whichever occurs first
operation, whichever occurs first.
・ The warranty will not cover failures or damages caused by not following the
guidelines stated in this manual, improper use, lack of appropriate maintenance,
natural disaster, accidents or act of God.
・ Any disassembly, alteration made to a product by the customer will void the
warranty.
・ The warranty will only apply to the products you purchased and not apply to
indirect or consequential loss or damage resulting from the use of this product.
For
For For
For S
SS
Selecting a
electing a electing a
electing a P
PP
Pump
umpump
ump
●
●●
●Operating
Operating Operating
Operating M
MM
Method
ethodethod
ethod
・The pump is most suitable for intermittent operation. Please check operating method.
Continuous operation is also permitted.
●
●●
●Required
Required Required
Required F
FF
Flow
low low
low R
RR
Rate
ateate
ate
・Select a pump by referring to the catalog, drawings, or other materials.
・Note that discharge rate is subject to the pump type, temperature, and pressure
of the fluid.
・Select a pump with an adequate margin of outlet pressure and flow rate.
●
●●
●Required
Required Required
Required P
PP
Pressure
ressureressure
ressure
・Select a pump by referring to the catalog, drawings and other material.
Note: The pump must be run within the maximum pump operating pressure and the motor
output rating.
●
●●
●Relief
Relief Relief
Relief V
VV
Valve
alve alve
alve P
PP
Pressure
ressure ressure
ressure S
SS
Setting.
etting.etting.
etting.
・The relief valve is preset at the cracking pressure.
Note: The relief valve setting must be within the maximum pump operating pressure and
the motor output rating.
Note: The “cracking pressure” is the pressure at which relief valve starts to open with the
pressure building up inside the circuit and allow certain amount of coolant to flow.
Caution Do not run the pump over the maximum pressure setting.
Caution Do not remove the return pipe, or it may cause foam and
abnormal sounds.
●
●●
●Selecting
Selecting Selecting
Selecting C
CC
Coolant
oolant oolant
oolant T
TT
Type
ypeype
ype and
and and
and V
VV
Viscosity
iscosity iscosity
iscosity R
RR
Range.
ange.ange.
ange.
・Coolant fluid which offers lubricity, rust protection (such as tap water) and
contains no corrosive substances. Also follow the table 4 on P.16 for the
requirements of fluid viscosity and coolant type.

16
T
TT
Table
able able
able 4
44
4 :
: :
: Compatible
Compatible Compatible
Compatible C
CC
Coolant
oolant oolant
oolant T
TT
Type
ypeype
ype and
and and
and V
VV
Viscosity
iscosity iscosity
iscosity R
RR
Range
angeange
ange.
..
.
Note: A lower viscosity will reduce volumetric efficiency (discharge will be reduced).
Note: Operating in improper fluid may cause Turbulence filter clogging or over-loading, leading
to pump damage or motor burnout.
Note: Low temperature in winter must be taken into account when setting fluid temperature as
viscosity increases rapidly when temperature decreases.
Caution
Consult your coolant manufacturer (or distributor) for the
compatibility with fluoro carbon rubber, the material of our pump
seal, in advance to avoid leakage.
Warning
The pump cannot be used for volatile liquids like gasoline, nor
fuel oils like kerosene. They may explode or cause fire.
●
●●
●Operating
Operating Operating
Operating A
AA
Ambient
mbient mbient
mbient T
TT
Temperatures
emperaturesemperatures
emperatures
・The permissible ambient temperature range is from -10℃ to +40℃.
Caution Operate the pump within the specified temperature range
●
●●
●Fluid
Fluid Fluid
Fluid T
TT
Temperature
emperature emperature
emperature R
RR
Range
angeange
ange
・ The permissible temperature range of the tank fluid is from -5℃ to +60℃.
・Keep the temperature gap between the tank fluid and ambient temperature
within 40℃ when start-up.
Warning
Do not pump fluid over the specified temperature range. Leaked
fluid may cause burns.
Caution
Operating the pump over the specified range may significantly
shorten the pump service-life and cause poor performance and
coolant leakage.
●
●●
●Compatible
Compatible Compatible
Compatible W
WW
Work
ork ork
ork M
MM
Materials.
aterials.aterials.
aterials.
Caution
Do not use work materials harder than HV600. Extremely hard
materials, such as Inconel, Titanium, Tungsten, can drastically
shorten your pump service-life.

17
Caution
Do not use hardened steel, carbon fiber, glass fiber containing
materials, carbon materials. Those materials can drastically
shorten your pump service-life.
Caution
Do not use film or resin coating materials. Those materials can
lead to poor filter performance and Turbulence filter clogging.
Caution
Do not operate the pump in a fluid containing a large amount of
grindstones or abrasive grains. They can drastically shorten your
pump service-life.
M
MM
Motor
otorotor
otor S
SS
Selection
electionelection
election
●
●●
●Required
Required Required
Required P
PP
Power for the
ower for the ower for the
ower for the P
PP
Pump.
ump.ump.
ump.
・Select a pump with an adequate margin with reference to the performance carve
in the catalog.
・The power required by a pump is subject to the pressure, flow rate and the
viscosity of the fluid.
・A fluid with higher viscosity requires a greater power.
Note: Low temperature in winter must be taken into account when selecting motor, as viscosity
rapidly increases when temperature drops.
●
●●
● Voltage and Frequency
Voltage and FrequencyVoltage and Frequency
Voltage and Frequency
Caution Do not apply wrong supply voltage or frequency.
Caution
Keep the motor rotation speed within the specified range.
(1000 min
-1
to 2000 mm
-1
)

18
Suction Performance
ES is self-priming pump. However, resistance in inlet line or air entry can reduce
the suction capability of the pump.
Always pay attention to the coolant surface level and clogging in inlet port
(Perforated sheet metals).
Caution
Make sure that there is no excess resistance in outlet line. It will
affect the pump suction performance.
Caution
Make sure there is no trapped air in inlet line. It may decrease
the performance of Turbulence filter, cause filter clogging and
damage the pump.
Caution
Clean the perforations of the inlet port at regular intervals.
Clogged inlet will cause abnormal noise, vibration, discharge
failure, which result in the pump damage.
Internal Structure
Internal StructureInternal Structure
Internal Structure
F
FF
Figure 9
igure 9igure 9
igure 9：
：：
：Sectional Views
Sectional ViewsSectional Views
Sectional Views

19
Troubleshooting
Troubleshooting Troubleshooting
Troubleshooting G
GG
Guide
uideuide
uide
If you experience no oil discharge, a high pitched sound, or such other abnormal
phenomena soon after the installation, check the troubleshooting chart in the table
that follows.
If you cannot find out the cause of trouble, consult us or a dealer.
Table
TableTable
Table 5 :
5 : 5 :
5 : Pump
Pump Pump
Pump T
TT
Troubleshooting
roubleshooting roubleshooting
roubleshooting C
CC
Chart
harthart
hart
Symptom
Possible causes
Check methods
Possible remedies
No discharge from
outlet port.
Insufficient flow or
pressure.
Abnormal noise.
M
otor failure
Are wires at motor loose or
disconnected?
Do operation test for motor
individually.
Repair or replace pump.
M
otor is wired incorrectly
or disconnected
Are wires at motor loose or
disconnected?
Check direction of rotation.
Rewire motor in a correct
rotation indicated on label.
C
oupling is damaged
Check
connected area between
pump and motor.
Replace coupling.
I
nsufficient coolant
level
Check coolant level in tank.
Add enough coolant.
Control coolant level with level
sensor.
I
nlet port is clogged
Check the inlet port for clogging.
Periodical
cleaning around inlet
port.
Insert a plate filter prior to the inlet
port as a
pre
-
filtration
.
Turbulence
filter is
clogged.
Is coolant
delivered
from
contaminant drain port?
Is there abnormal noise?
Is there tramp oil?
Perform backwashing
.
(See the steps on P.20)
Take measures to prevent suction
of air or tramp oil.
I
mpeller is clogged with
metal chips, pump
failure.
Check for impeller clogging or
damage.
R
emove
metal chips
.
Repair or replace pump.
A
ir drawn into pump or
pipes.
On the
first run, after long term
storage or immediately after
replacing coolant, pump often
doesn’t discharge due to air
inside the pump.
Perform
air
-
bleeding on pump
or piping. If check valve is installed
in outlet line, perform air-bleeding
before check valve.
P
ump failure or wear
Does motor rota
te
?
Are viscosity and lubrication level
adequate?
Is there a
bnormal
noise?
Repair or replace
motor
.
Change the types of coolant
you use.
C
avitation, Aeration
Is p
ump sucking foam or air?
Take
measures to prevent suction
of air or tramp oil.
(ex. Change pump location, use
partition or defoamer)
P
ipes connected to
outlet port is too large.
Is outlet discharge flow rate
sufficient?
・
Use smaller
pipes.
Incorrect pressure
setting in relief valve.
Does
pressure build up when
tightening the relief valve’s adjust
screw?
Tighten up
the relief valve’s adjust
screw to the required level.
R
elief valve fixing
Does
pressure not build up when
tightening the relief valve’s adjust
screw?
Repair or replace relief valve.
Remove tramp oil.
No discharge from
contaminant drain
port
Contaminant drain port
piping is too long or too
high.
Pull out a pipe from the
contaminant drain port to see if
coolant is delivered properly or
not.
Piping must be no higher than
1 M from the tank bottom
vertically, and no longer than
3
M
horizontally.
Clogging of
contaminant drain port.
Check the clogged area.
C
lean inside
the pipe periodically.
Make piping layout with less bend.
Use larger
pipe
.
Clogging or failure of
suction impeller
.
Check the suction impeller for
clogging or damage.
Remove
accumulated
metal chips
.
Repair or replace pump.
C
oolant leaks
Oil seal deterioration
or damage
Does
coolant
leak from
near the
coupling
c
onnected
area?
Repair or replace pump.
Packing deterioration
or damage.
Does
coolant
leak from
c
onnec
ted
area?
Repair or replace pump.