Teral VKA-e User manual

Model : VKA-e/VKC-e
Coolant Pump
Coolant Pump
Instruction Manual
Original Instructions

I
Limited warranties
1. In the event of failure or breakage under proper use of the product during the warranty period,
equipment supplied by Teral Inc. shall be repaired or replaced free of charge within the scope of the
relevant part, provided that such failure or breakage is attributable to inadequacy of the design or
workmanship of the equipment.
The warranty period of this product shall be one year after the date of delivery.
2. The warranty mentioned in the above clause shall be only the mechanical warranty of the defective part,
and shall not cover any expenses or other damage arising from the failure or breakage.
3. In the event of the following failures and breakage, the costs of the repairs shall be borne by the user.
(1) Failures and breakage attributable to equipment that was not delivered by Teral Inc.
(2) Failures and breakage after the expiration of the warranty period
(3) Failures and breakage caused by disasters or force majeure, such as fire, acts of God or
earthquakes
(4) Failures and breakage resulting from repairs or modifications made without the consent of Teral
Inc.
(5) Failures and breakage when parts other than those designated by Teral Inc. are used
(6) Failures and breakage caused by use or storage outside the specification range
4. Teral Inc. shall not be liable for the damage caused by incorrect or reckless use of the pump. Cost and
expenses incurred for sending engineer(s) in such a case shall be borne by the user.
5. If the cause of the failure is unclear, necessary actions shall be determined through mutual
consultation.
<Chargeable repair>
Investigation and repair work after the warranty period shall become chargeable. The repair and
investigation of the above-mentioned failures outside the warranty range shall be undertaken by Teral Inc.,
even though outside the warranty period.

II
Purpose of this manual
The purpose of this manual is to provide the user with detailed information necessary to properly operate,
maintain and inspect the pump. This product may cause an unexpected accident when handed incorrectly.
Please use the product correctly according to this instruction manual.
This manual contains the following information and is intended for persons experienced in the operation of
pumps, or for those who have been trained by such experienced operators. Only qualified personnel such
as licensed electrical engineers are allowed to carry out the electrical wiring work.
Contents
Page
Limited warranties........................................................................................................................................... I
Purpose of this manual.................................................................................................................................. II
Contents ........................................................................................................................................................ II
1. Safety precautions............................................................................................................................... 1-1
1.1 Types and meanings of warning terms and graphic symbols ..................................................... 1-1
1.2 Safety precautions....................................................................................................................... 1-1
1.3 Location of warning labels and caution labels............................................................................. 1-3
2. Configuration and overview of the pump............................................................................................. 2-1
2.1 Part names and functions............................................................................................................ 2-1
2.2 Model description ........................................................................................................................ 2-1
2.3 Standard specifications ............................................................................................................... 2-2
2.4 Information indicated on the nameplates .................................................................................... 2-3
2.5 Specification table........................................................................................................................ 2-4
2.6 Dimensional outline drawing and dimensions table .................................................................... 2-5
2.7 Internal structure drawing............................................................................................................ 2-7
3. Transportation, conveyance, storage and installation......................................................................... 3-1
3.1 Precautions for transporting, moving and storing the pump ....................................................... 3-1
3.2 Before using the pump ................................................................................................................ 3-1
3.3 Precautions for installation .......................................................................................................... 3-2
3.4 Precautions for piping work ......................................................................................................... 3-4
3.5 Precautions for wiring work ......................................................................................................... 3-4
4. Operation............................................................................................................................................. 4-1
4.1 Check items before test operation...............................................................................................4-1
4.1.1 Check items related to the electrical system ....................................................................... 4-1
4.1.2 Check items related to the pump......................................................................................... 4-1
4.2 Running the pump (test operation).............................................................................................. 4-2
5. Maintenance and inspection................................................................................................................ 5-1
5.1 Precautions for maintenance and inspection .............................................................................. 5-1
5.2 Mechanical seal........................................................................................................................... 5-2
5.3 Daily check .................................................................................................................................. 5-2
5.4 Periodic inspection ...................................................................................................................... 5-3
6. Troubleshooting................................................................................................................................... 6-1
7. After-sales service ............................................................................................................................... 7-1
8. Disposal............................................................................................................................................... 8-1
8.1 Precautions for disposal .............................................................................................................. 8-1

1-1
1. Safety precautions
1.1 Types and meanings of warning terms and graphic symbols
This instruction manual divides precautions into the following four categories according to the level
of hazards (or the severity of the accident). In addition, prohibited or mandatory actions as well as
cautions are indicated with a graphic symbol.
Be sure to understand the meanings of the following terms and comply with the content
(instructions) of the instruction manual
Explanation of the warning terms Explanation of the graphic symbols
Warning Term Meaning
Don’ts Do not touch Do not
disassemble
Do not touch
with wet
hand
Do not
expose to
water
Danger
Indicates an imminently hazardous
situation. Failure to observe this will
result in death or serious injury.
These graphic symbols indicate prohibited
actions (that must not be done).
Warning
Indicates a potentially hazardous
situation. Failure to observe this will
result in death or serious injury.
Do’s
This graphic symbol indicates mandatory
actions (that must be done).
Caution
Indicates a potentially hazardous
situation. Failure to observe this will
result in minor or moderate injury or
property damage. Caution Electric
shock hazard
Rotation
hazard
Hot surface
Note
Indicates information that is in
particular to be noted or emphasized.
These graphic symbols indicate existing hazards to
beware of.
1.2 Safety precautions
Danger
Do not touch any energized parts after turning on the main power.
Doing so may cause electric shock leading to death because high voltage is applied to the energized part.
Do not use the product in any explosive atmosphere.
Doing so may cause an injury and fire.
Warning
Properly move the unit according to lifting
instructions.
Otherwise, the unit may fall, resulting in injury and/or
damage.
Do not use the pump or perform any work when it
is kept lifted.
Otherwise, the unit may fall, resulting in injury and/or
damage.
Only those who are authorized by the site
manager are allowed to operate the pump.
Operation by unskilled personnel may lead to an unforeseen
accident.
Installation, maintenance, and inspection must
only be carried out by personnel who have been
trained to handle the pump.
Operation by unskilled personnel may lead to an unforeseen
accident.
Only qualified personnel, such as licensed
electrical engineers, are allowed to carry out any
electric work.
Otherwise, it may lead to an electric shock, fire, failures,
and/or other problems.
Use high-quality wiring equipment and devices,
and carry out wiring work safely and securely
according to the technical standards for electrical
facilities, as well as the indoor wiring regulations.
Otherwise, it may lead to an electric shock, fire, and/or other
problems.
Do not connect the ground wire to a gas pipe or
water pipe.
Such a connection is illegal and leads to an electric shock,
explosion and/or fire.
Securely install the ground wire and ensure to
carry out grounding work.
Otherwise, it may lead to an electric leak and/or electric
shock.
Do not operate the pump when its action or parts
are abnormal.
Otherwise, it may lead to injury, failures and/or various
accidents.
Wiring must be performed reliably according to the
connection diagram within the terminal box and
the instruction manual.
Incorrect wiring may cause fire, electric shock and other
accidents.

1-2
Warning
Be sure to keep the terminal box cover attached
during the operation of the pump.
Otherwise, it may lead to an electric shock.
Do not forcibly bend or pull the power cable and
the lead wire of the product. Avoid putting them
between objects.
Failure to observe this may cause an electric shock or fire.
Only after detaching a companion flange from
each pump, screw a pipe into it.
Failure to observe this may cause damage or leakage.
Before starting the maintenance or inspection
work, be sure to stop the pump and turn off the
main power of the panel board.
Failure to observe this may cause electric shock, injury,
damage or leakage.
Check that the wire connections and wiring
sections are free from looseness.
Looseness may cause a fire or electric shock.
Before rotating the main shaft by hand to check its
smooth rotation, be sure to disconnect the main
power supply.
Otherwise, it may lead to injury and/or damage.
Before starting the unit or carrying out
maintenance/inspection work, ensure that all the
relevant workers are informed of the operation and
that there are no workers in the dangerous zone
around the unit.
Otherwise, it may lead to an unforeseen accident.
Never perform zero-discharge operation.
Failure to observe this may increase the internal temperature
and pressure of the pump, leading to damage and steam
spouting.
Do not touch any part of the pump that does not
need operation, after energized.
Failure to observe this may cause electric shock or injury.
If you need to disassemble the pump for check,
parts change, repair and other work, ask the
vendor or the service provider specified by Teral
Inc.
Work needing expertise may lead to an accident or failure
when an inexperienced person does such work.
Do not put your fingers or other objects into the
opening and rotating part of the motor during
operation.
Otherwise, it may lead to injury and/or damage.
Be sure to turn off the power switch if an electric
outage occurs.
At the time of power restoration, the machine may suddenly
operate, leading to an injury.
Caution
Do not use the unit outside the range of the
product specifications.
Otherwise, an electric shock, a fire, leaks, or failures may
occur.
Do not use the unit at an incorrect power voltage.
The motor may get damaged if used with an incorrect supply
voltage.
Do not use a single unit as the only means of
directly operating key facilities or sustaining life.
Otherwise, a failure may lead to the suspension of water
supply. Be sure to get a backup machine ready.
Ensure that the delivered container is placed in the
correct orientation (not upside down) before
unpacking. Carefully unpack the container, while
paying special attention to nails.
Otherwise, it may lead to injury and/or damage.
The floor in the pump installation area must be
provided with water-proofing and drainage
measures.
Otherwise, significant damage may be caused in case of a
leak.
Do not put the cables or control line of other
equipment in the same pipe or duct.
Otherwise, it may damage the unit and/or other equipment.
Do not step on the pump and motor.
Otherwise, it may lead to injury, damage, and/or other
problems.
Do not allow a liquid to splash on the motor.
Otherwise, it may lead to an electric shock, electric leak,
failures, and/or other problems.
Operate the controls carefully.
Otherwise, it may lead to injury and/or damage.
During test operation, never run the pump dry (i.e.
never run the pump when the liquid level is below
the minimum level).
Failure to observe this may cause damage or a fire.
Prior to operation, clean the interior of piping
thoroughly to remove foreign matter.
Otherwise, the foreign matter in the piping system may get
into the pump, leading to an accident or pump failure by
conveyance of the mixed liquid.
During normal operation, never run the pump dry
for more than 30 seconds.
Failure to observe this may cause damage or a fire.
Do not put a cloth on the motor.
Failure to observe this may cause overheating or ignition.
Do not touch the motor body during operation or
immediately after the stop of operation.
Failure to observe this may cause a burn due to high
temperature of the pump.

1-3
Caution
In the event of an alarm or abnormal condition that
cannot be resolved, immediately stop the
operation and contact Teral Inc. or its service
provider.
Otherwise, it may lead to an accident.
Do not operate the pump when tools or other items
are placed on the pump.
Otherwise, it may lead to injury and/or damage.
Check to verify that the product is exactly what you
ordered.
The use of a wrong product may cause an injury or failure.
Be sure to conduct inspection according to the
maintenance checklist.
Otherwise, you cannot prevent potential failures, thus
leading to a higher risk of accidents.
Check the rotating direction of the pump before
being coupled with the machine.
Failure to observe this may cause an injury or damage.
Do not provide any strainer at the tip of the pump.
Failure to observe this may cause the strainer to come off,
resulting in an injury or damage.
Do not place any obstacle that disturbs ventilation,
around the product.
Failure to observe this may cause a fire.
Do not place any combustible objects around the
product.
Failure to observe this may cause a fire.
Do not run the pump at a frequency exceeding 60
Hz.
Failure to observe this may cause a burnout or fire.
Do not touch the impeller, screw, tie bolt, strainer,
or other items with bare hands.
Failure to observe this may cause an injury or damage.
Be sure to install an overcurrent protection device.
Installation of the device is obliged by the Technical
Standards for Electrical Equipment. Failure to observe this
may cause a fire or damage due to damage to the product.
In addition, it is recommended to install a protective device,
e.g. an earth leakage circuit breaker.
Do not use any operating fluid beyond the
viscosity limit.
Failure to observe this may cause a burnout or fire.
Do not run the pump with its strainer removed.
Failure to observe this may cause an injury or damage.
Do not touch any terminal or wire when measuring
the insulation resistance.
Failure to observe this may cause an electric shock.
Do not touch the impeller, screw, or other parts
after removing the strainer.
Failure to observe this may cause an injury.
After power-off, do not restart the pump until it
comes to a complete stop.
Failure to observe this may cause an excessive load to act
on the main shaft, resulting in a shortened service life of the
pump.
Do not use thinner or benzine for cleaning the
product.
Failure to observe this may cause the product to be
discolored or the coating to be peeled off.
If using a solvent for cleaning the product, pay
attention to the handling and use environment of
the solvent.
Failure to observe this may cause poisoning.
When lifting the product, pay attention to its center
of gravity.
Failure to observe this may cause the product to topple over
or fall down, leading to an injury.
Dispose of the product as industrial waste.
When lifting the product, give attention to its
weight. Do not allow any product heavier than 15
kg to be lifted by a single person.
Failure to observe this may put a burden on the body,
leading to an injury.
If adopting star-delta starting, use a starter with an
electromagnetic switch (three-contactor type) on
the primary side.
Failure to observe this may cause a fire.
1.3 Location of warning labels and caution labels
The figure below shows the locations of
warning labels and caution labels. If these
labels become dirty and hard to read or if they
are peeled off, replace them with a new one.
Warning
Caution
Observe all the warnings and cautions affixed
to the machine as well as those described in
this instruction manual.
Electric shock
caution label
RoHS seal
Pump
nameplate
View from P-P
Nameplate for
motor and
allowable current
value
Terminal box

2-1
2. Configuration and overview of the pump
This chapter describes the standard specifications of the pump. For details, refer to the delivery
specifications such as the dimensional outline drawing and the internal structure drawing. If you
have purchased a customized product, some information in this chapter may not be applicable to
your unit. Refer to the dimensional outline drawing, the internal structure drawing, and other
documents to check the product specifications in such a case.
Caution
Do not use this product under any conditions other than those provided in
the specifications. Otherwise, an electric shock, a fire, leaks, or failures
may occur.
2.1 Part names and functions
Motor
Discharge port
Suction port (Strainer)
Air vent (not provided with the VKA-e models with Rp3/4 discharge
bore)
Vents the air in the pump to prevent dry run, if it is impossible to
open the discharge piping to the atmosphere.
2.2 Model description
Model
Number of impellers (1 to 9)
Number of casing stages (2
to 9)
Series number
Phase and frequency (A: 3-phase, 50Hz/60Hz)
Characteristics (H: Pressure type, Q: Flow rate type)
With a built-in premium efficiency (IE3-equivalent)
motor
Model
Number of impellers (1 to 7)
Number of casing stages (2
to 9)
Series number
Phase and frequency (A: 3-phase, 50Hz/60Hz)
Characteristics (H: Pressure type, Q: Flow rate type)
With a built-in premium efficiency (IE3-equivalent)
motor
VKC 7 9 6 A H -e

VKA 9 9 6 A H -e


2-2
2.3 Standard specifications
Model VKA-e VKC-e
Quality Grinding fluid, cutting fluid, etc. after secondary treatment Note 1
Temperature -20 to 40°C
(No freezing is allowed.)
-20 to 90°C
(No freezing is allowed.)
Applicable
liquid
Dynamic viscosity See “Note 2.”
Installation location
Indoors, Height above sea level: 1,000 m or less, Ambient
temperature: -20 to 40°C, Humidity: less than 95% (No
condensation is allowed.), Place not exposed to direct sunlight,
Place whose atmosphere contains no corrosive gas, explosive
gas or vapor
Pump leg FC150 SCS14A
Casing SUS304 SUS304
Suction chamber FC200 SCS14A
Impeller SUS304 SUS304
Material
Main shaft (motor /
pump) S35C+SUS403
Shaft sealing structure Mechanical seal
Type Totally-enclosed fan-cooled indoor type
IP protection IP54
Power Note 3 3-phase 50/60Hz 200/200-220V
Insulation class Class F
Number of poles 2P
Motor
Standard IEC60034-1
Noise 69dB(A)
Pump Munsell N1
Coating
color Motor
- Body & outer fan cover
- Terminal box
- Melamine-baked, Munsell N1
(gloss)
- Cationic coating (black)
Note 1 Under the conditions that contain hard sludge—such as abrasive powders, grinding powders,
and diamond abrasive grains—in the pumping fluid, the service life of the mechanical seal
may become shorter. In such a case, install a filter (e.g. magnet filter or paper filter). Note
that the product cannot be used for water or special liquids such as printing liquids and acidic
liquids. For other special liquids (e.g. pure water, alkaline/acidic liquids, and ceramic liquids),
contact Teral Inc.
Note 2 When the dynamic viscosity of liquids used becomes higher than that in the table below, the
useful life of the motor may become shorter, leading to a burnout. Be sure to use a liquid with
a dynamic viscosity lower than its lime value in the table below. In addition, the dynamic
viscosity of a liquid may drastically increase with decreasing temperature of the liquid. When
using a liquid, confirm the dynamic viscosity of the liquid when its temperature is lowest.
The characteristics of the pump deteriorate as an increase in the dynamic viscosity of the
liquid used.
Applicable limit value of dynamic viscosity [mm2/s]
Model Operation at 50Hz Operation at 60Hz
VKA(C)4□6AH-e, VKA(C)7□6AH-e
VKA(C)4□6AQ-e, VKA6□6AQ-e 75 37.5
Any other models 75 75
Note 3 Limit the fluctuations of the power voltage within ±10% of the rated voltage, and also limit the
fluctuations of the frequency within -5% to +3% of the rated value. Avoid continuous
operation if the voltage is not within the range of ±5% of the rated value or if the frequency is
not within the range of ±2% of the rated value.
* This product is labeled with the CE self-declaration mark and complies with the Essential Safety
Requirements (ESRs) of the "EU (EC) Directive." The following are the general descriptions.
*

2-3
Manufacturer Teral Inc. 230 Moriwake, Miyuki-cho, Fukuyama-city, Hiroshima 720-0003
Japan
Product VKA-e/VKC-e model coolant pump
Machinery Directive 2006/42/EC
Standards EN 809/A1:2009, EN ISO 12100:2010, EN 60204-1/A1:2009
Manufacturer
(Japan) Teral Inc., Hiroshima
Administrator
(EU nation)
Shiran Tower 5F Luzna 716/2 160 00 Vokovice, Praha 6
CZECH REPUBLIC
Person in charge: Tomohisa Yamamoto
Place of declaration Hiroshima, Japan
Manager: Taiji Monden
2.4 Information indicated on the nameplates
The pump nameplate (for indicating the pump specifications) and the motor nameplate (for
indicating the motor specifications) are affixed to the product. When you receive the pump, check
the pump nameplate to verify that the delivered product is exactly what you ordered. Be sure to
confirm the model, nominal output, frequency, and voltage. The following figure and table show the
appearance of the pump nameplate and the information indicated on it.
If by any chance you find anything wrong, contact the vendor from which you purchased the product.
Do not place any obstacles in front of the nameplate or remove it. Always keep the nameplate
clearly visible.
Caution
Do not run the pump at a frequency exceeding 60 Hz. Failure to observe
this may overload the motor, causing it to burn out.
Symbol Item
1 Model
2 Nominal output (kW)*1
2 Motor output (kW)
3 Nominal discharge diameter (B)
4 Total head (m)
5 Discharge rate (L/min)
6 Frequency (Hz)
7 Voltage (V)
8 Current (A)
*2
9 Rotating speed (min-1)
10 Max. permissible rotating speed
(min-1)
11 Year of manufacture
12 Instruction manual No.
13 Inboard bearing type
14 Outboard bearing type
15 Production No.
*1 The output indicated on the pump nameplate is nominal output and may differ from the rated output of
the motor. The nominal output is an approximate output value when the pump runs at a dynamic
viscosity of 1 mm2/s.
*2 The electric current indicated on the pump nameplate may differ from the rated current of the motor.
The electric current indicated on the pump nameplate is based on actual use. Teral recommends
using this value as the setup current value of the protective device.
Pump nameplate

2-4
2.5 Specification table
Models VKA-AH-e
Model
Specifications VKA16AH-e VKA26AH-e VKA36AH-e VKA46AH-e VKA56AH-e VKA66AH-e VKA76AH-e VKA86AH-e VKA96AH-e
Nominal output (kW) 0.1 0.17 0.2 0.34 0.3 0.51 0.4 0.68 0.5 0.85 0.6 1.02 0.7 1.19 0.8 1.36 0.9 1.53
200 200 200 200 200 200 200 200 200
Rated voltage (V) 200 220 200 220 200 220 200 220 200 220 200 220 200 220 200 220 200 220
Frequency (Hz) 50 60 50 60 50 60 50 60 50 60 50 60 50 60 50 60 50 60
1.9 2.3 3.5 4.0 5.6 6.0 6.0 8.4 9.6
Pump rated current (A) 2.0 1.9 2.6 2.3 3.5 3.5 4.0 4.0 5.5 5.4 5.9 5.8 6.4 5.8 7.0 7.9 7.6 8.8
10.1 10.1 18.3 18.3 38.6 38.6 38.6 54.0 54.0
Starting current (A) 11.5 11.1 11.5 11.1 20.8 20.1 20.8 20.1 42.1 42.5 42.1 42.5 42.1 42.5 64.0 59.0 64.0 59.0
Discharge rate (L/min) 40 50 40 50 40 50 40 50 40 50 40 50 40 50 40 50 40 50
Total head (m) 7 9 13 18 20 28 27 37 33 46 40 55 48 62 56 77 63 86
Applicable limit value of
dynamic viscosity
(mm2/s)
75 75 75 75 75 75 75 37.5 75 75 75 75 75 37.5 75 75 75 75
Standard pipe diameter
(Rp) 3/4 3/4 3/4 3/4 3/4 3/4 3/4 1 1/4 1 1/4
Models VKA-AQ-e
Model
Specifications VKA16AQ-e VKA26AQ-e VKA36AQ-e VKA46AQ-e VKA56AQ-e VKA66AQ-e
Nominal output (kW) 0.18 0.3 0.36 0.6 0.54 0.9 0.72 1.2 0.9 1.5 1.1 1.8
200 200 200 200 200 200
Rated voltage (V) 200 220 200 220 200 220 200 220 200 220 200 220
Frequency (Hz) 50 60 50 60 50 60 50 60 50 60 50 60
2.2 4.0 6.0 6.0 9.6 10.0
Pump rated current (A) 2.4 2.2 3.6 4.0 5.5 5.8 6.4 5.8 7.4 8.8 8.5 9.1
10.1 18.3 38.6 38.6 54.0 54.0
Starting current (A) 11.5 11.1 20.8 20.1 42.1 42.5 42.1 42.5 64.0 59.0 64.0 59.0
Discharge rate (L/min) 85 100 85 100 85 100 85 100 85 100 85 100
Total head (m) 6 8 13 18 19 28 26 36 33 46 39 54
Applicable limit value of
dynamic viscosity
(mm2/s)
75 75 75 75 75 75 75 37.5 75 75 75 37.5
Standard pipe diameter
(Rp) 3/4 3/4 3/4 3/4 1 1/4 1 1/4
Models VKC-AH-e
Model
Specifications VKC16AH-e VKC26AH-e VKC36AH-e VKC46AH-e VKC56AH-e VKC66AH-e VKC76AH-e
Nominal output (kW) 0.1 0.17 0.2 0.34 0.3 0.51 0.4 0.68 0.5 0.85 0.6 1.02 0.7 1.19
200 200 200 200 200 200 200
Rated voltage (V) 200 220 200 220 200 220 200 220 200 220 200 220 200 220
Frequency (Hz) 50 60 50 60 50 60 50 60 50 60 50 60 50 60
1.9 2.3 3.5 4.0 5.6 6.0 6.0
Pump rated current (A) 2.0 1.9 2.6 2.3 3.5 3.5 4.0 4.0 5.5 5.4 5.9 5.8 6.4 5.8
10.1 10.1 18.3 18.3 38.6 38.6 38.6
Starting current (A) 11.5 11.1 11.5 11.1 20.8 20.1 20.8 20.1 42.1 42.5 42.1 42.5 42.1 42.5
Discharge rate (L/min) 40 50 40 50 40 50 40 50 40 50 40 50 40 50
Total head (m) 7 9 13 18 20 28 27 37 33 46 40 55 48 62
Applicable limit value of
dynamic viscosity
(mm2/s)
75 75 75 75 75 75 75 37.5 75 75 75 75 75 37.5
Standard pipe diameter
(Rp) 3/4 3/4 3/4 3/4 3/4 3/4 3/4
Models VKC-AQ-e
Model
Specifications VKC16AQ-e VKC26AQ-e VKC36AQ-e VKC46AQ-e
Nominal output (kW) 0.18 0.3 0.36 0.6 0.54 0.9 0.72 1.2
200 200 200 200
Rated voltage (V) 200 220 200 220 200 220 200 220
Frequency (Hz) 50 60 50 60 50 60 50 60
2.2 4.0 6.0 6.0
Pump rated current (A) 2.4 2.2 3.6 4.0 5.5 5.8 6.4 5.8
10.1 18.3 38.6 38.6
Starting current (A) 11.5 11.1 20.8 20.1 42.1 42.5 42.1 42.5
Discharge rate (L/min) 85 100 85 100 85 100 85 100
Total head (m) 6 8 13 18 19 28 26 36
Applicable limit value of
dynamic viscosity
(mm2/s)
75 75 75 75 75 75 75 37.5
Standard pipe diameter
(Rp) 3/4 3/4 3/4 3/4
Note 1) The discharge rate and the total head are values when each model is tested at a dynamic viscosity of 1 mm2/s (the same viscosity as fresh
water at normal temperature). Basically, the above models cannot be used for pumping water. However, contact Teral Inc. for our suggestions.
Note 2) The rated current in the above table (current value indicated on the pump nameplate) is the recommended preset current value of the protective
device.

2-5
2.6 Dimensional outline drawing and dimensions table
(1) Dimensional outline drawing
Fig. 1 Fig. 2
Fig. 3
Ground
terminal
Maximum
liquid
level
Minimum
liquid
level
Rotation direction
View from P-P
Ground
terminal
A
ir vent
valve
Bottom of
the tank
Terminal
Box
Rotation direction
Rotation direction
Mounting
hole
Strainer
Size φ2 Drain
Motor
n
a
m
ep
l
ate
Terminal
Box
Maximum
liquid level
Minimum
liquid
level
Bottom of
the tank
Strainer
Size φ2
Drain
Mounting
hole
Drain
Motor nameplate
Drain
Minimum
liquid level
Min. 5
Pump name
plate
Pump name
plate
Min. 5
These figures use a typical model. Some parts
vary in shape depending on the model and
specifications. Because some of the
specifications may be changed due to design
changes or for other reasons, please request
the delivery specifications when implementing
your plan.
Companion
flange
Terminal
Box Companion flange
A
ir vent
valve
Pump name
plate
Mounting
h
o
l
e
View from P-P
View from Q-Q
View from Q-Q
View from P-P
View from Q-Q
Mounting hole
Drain
Bottom of
the tank
Strainer
Size φ2
Min. 5
Suction Suction
Suction
DischargeDischarge
Discharge
Maximum
liquid
level
Ground
terminal

2-6
(2) Dimensions table
Models VKA-AH-e Unit: mm Models VKA-AQ-e Unit: mm
Model Fig. D KE KL L LH LK LL W
Estimated
mass (kg) Model Fig. D KE L LH LK LL W
Estimated
mass (kg)
VKA136AH-e 140 88 115 384 139 110 245 235 15 VKA126AQ-e 140 88 382 137 108 245 235 15
VKA146AH-e 140 88 115 404 159 130 245 235 15 VKA136AQ-e 140 88 410 165 138 245 235 15
VKA156AH-e 140 88 115 424 179 150 245 235 15 VKA146AQ-e 140 88 438 193 164 245 235 15
VKA166AH-e 140 88 115 444 199 170 245 235 15 VKA156AQ-e 140 88 466 221 192 245 235 15
VKA236AH-e 140 88 115 384 139 110 245 235 15 VKA166AQ-e 140 88 494 249 220 245 235 16
VKA246AH-e 140 88 115 404 159 130 245 235 15 VKA226AQ-e 140 88 382 137 108 245 235 14
VKA256AH-e 140 88 115 424 179 150 245 235 15 VKA236AQ-e 140 88 410 165 136 245 235 14
VKA266AH-e 140 88 115 444 199 170 245 235 16 VKA246AQ-e 140 88 438 193 164 245 235 14
VKA276AH-e 140 88 115 464 219 190 245 235 16 VKA256AQ-e 140 88 466 221 192 245 235 14
VKA286AH-e 140 88 115 484 239 210 245 235 16 VKA266AQ-e 140 88 494 249 220 245 235 15
VKA296AH-e 140 88 115 504 259 230 245 235 16 VKA276AQ-e 140 88 522 277 248 245 235 15
VKA336AH-e 140 88 115 384 139 110 245 235 14 VKA286AQ-e 140 88 550 305 276 245 235 15
VKA346AH-e 140 88 115 404 159 130 245 235 14 VKA296AQ-e 140 88 578 333 304 245 235 15
VKA356AH-e 140 88 115 424 179 150 245 235 14 VKA336AQ-e 157 96 430 165 136 265 242 18
VKA366AH-e 140 88 115 444 199 170 245 235 15 VKA346AQ-e 157 96 458 193 164 265 242 19
VKA376AH-e 140 88 115 464 219 190 245 235 15 VKA356AQ-e 157 96 486 221 192 265 242 19
VKA386AH-e 140 88 115 484 239 210 245 235 15 VKA366AQ-e 157 96 514 249 220 265 242 19
VKA396AH-e 140 88 115 504 259 230 245 235 15 VKA446AQ-e 157 96 458 193 164 265 242 19
VKA446AH-e 140 88 115 404 159 130 245 235 14 VKA456AQ-e 157 96 486 221 192 265 242 19
VKA456AH-e 140 88 115 424 179 150 245 235 14 VKA466AQ-e 157 96 514 249 220 265 242 19
VKA466AH-e 140 88 115 444 199 170 245 235 15 VKA476AQ-e 157 96 542 277 248 265 242 19
VKA476AH-e 140 88 115 464 219 190 245 235 15 VKA486AQ-e 157 96 570 305 276 265 242 20
VKA486AH-e 140 88 115 484 239 210 245 235 15 VKA496AQ-e
1
157 96 598 333 304 265 242 20
VKA496AH-e 140 88 115 504 259 230 245 235 15 VKA556AQ-e - - 526 221 192 - - 24
VKA556AH-e 157 95 122 444 179 150 265 242 19 VKA566AQ-e - - 554 249 220 - - 24
VKA566AH-e 157 95 122 464 199 170 265 242 19 VKA666AQ-e - - 554 249 220 - - 25
VKA576AH-e 157 95 122 484 219 190 265 242 19 VKA676AQ-e - - 582 277 248 - - 25
VKA586AH-e 157 95 122 504 239 210 265 242 19 VKA686AQ-e - - 610 305 276 - - 25
VKA596AH-e 157 95 122 524 259 230 265 242 20 VKA696AQ-e
2
- - 638 333 304 - - 25
VKA666AH-e 157 95 122 464 199 170 265 242 19
VKA676AH-e 157 95 122 484 219 190 265 242 19
VKA686AH-e 157 95 122 504 239 210 265 242 20
VKA696AH-e 157 95 122 524 259 230 265 242 20
VKA776AH-e 157 95 122 484 219 190 265 242 19
VKA786AH-e 157 95 122 504 239 210 265 242 20
VKA796AH-e
1
157 95 122 524 259 230 265 242 20
VKA886AH-e - - - 544 239 210 - - 25
VKA896AH-e - - - 564 259 230 - - 25
VKA996AH-e
2
- - - 564 259 230 - - 25
Models VKC-AH-e Unit: mm Models VKC-AQ-e Unit: mm
Model Fig.
D KE KL L LH LK LL W
Estimated
mass (kg) Model Fig. D KE KL L LH LK LL W
Estimated
mass (kg)
VKC136AH-e 140 88 115 384 139 110 245 235 15 VKC126AQ-e 140 88 115 382 137 108 245 235 15
VKC146AH-e 140 88 115 404 159 130 245 235 15 VKC136AQ-e 140 88 115 410 165 138 245 235 15
VKC156AH-e 140 88 115 424 179 150 245 235 15 VKC146AQ-e 140 88 115 438 193 164 245 235 15
VKC166AH-e 140 88 115 444 199 170 245 235 15 VKC156AQ-e 140 88 115 466 221 192 245 235 15
VKC236AH-e 140 88 115 384 139 110 245 235 15 VKC166AQ-e 140 88 115 494 249 220 245 235 16
VKC246AH-e 140 88 115 404 159 130 245 235 15 VKC226AQ-e 140 88 115 382 137 108 245 235 14
VKC256AH-e 140 88 115 424 179 150 245 235 15 VKC236AQ-e 140 88 115 410 165 136 245 235 14
VKC266AH-e 140 88 115 444 199 170 245 235 16 VKC246AQ-e 140 88 115 438 193 164 245 235 14
VKC276AH-e 140 88 115 464 219 190 245 235 16 VKC256AQ-e 140 88 115 466 221 192 245 235 14
VKC286AH-e 140 88 115 484 239 210 245 235 16 VKC266AQ-e 140 88 115 494 249 220 245 235 15
VKC296AH-e 140 88 115 504 259 230 245 235 16 VKC336AQ-e 157 95 122 430 165 136 265 242 18
VKC336AH-e 140 88 115 384 139 110 245 235 14 VKC346AQ-e 157 95 122 458 193 164 265 242 19
VKC346AH-e 140 88 115 404 159 130 245 235 14 VKC356AQ-e 157 95 122 486 221 192 265 242 19
VKC356AH-e 140 88 115 424 179 150 245 235 14 VKC366AQ-e 157 95 122 514 249 220 265 242 19
VKC366AH-e 140 88 115 444 199 170 245 235 15 VKC446AQ-e 157 95 122 458 193 164 265 242 19
VKC376AH-e 140 88 115 464 219 190 245 235 15 VKC456AQ-e 157 95 122 486 221 192 265 242 19
VKC386AH-e 140 88 115 484 239 210 245 235 15 VKC466AQ-e
3
157 95 122 514 249 220 265 242 19
VKC396AH-e 140 88 115 504 259 230 245 235 15
VKC446AH-e 140 88 115 404 159 130 245 235 14
VKC456AH-e 140 88 115 424 179 150 245 235 14
VKC466AH-e 140 88 115 444 199 170 245 235 15
VKC476AH-e 140 88 115 464 219 190 245 235 15
VKC486AH-e 140 88 115 484 239 210 245 235 15
VKC496AH-e 140 88 115 504 259 230 245 235 15
VKC556AH-e 157 95 122 444 179 150 265 242 19
VKC566AH-e 157 95 122 464 199 170 265 242 19
VKC576AH-e 157 95 122 484 219 190 265 242 19
VKC586AH-e 157 95 122 504 239 210 265 242 19
VKC596AH-e 157 95 122 524 259 230 265 242 20
VKC666AH-e 157 95 122 464 199 170 265 242 19
VKC676AH-e 157 95 122 484 219 190 265 242 19
VKC686AH-e 157 95 122 504 239 210 265 242 20
VKC696AH-e 157 95 122 524 259 230 265 242 20
VKC776AH-e 157 95 122 484 219 190 265 242 19
VKC786AH-e 157 95 122 504 239 210 265 242 20
VKC796AH-e
3
157 95 122 524 259 230 265 242 20

2-7
2.7 Internal structure drawing
(1) Models VKA-AH-e (VKA16AH-e to VKA76AH-e)
Code Part name Material
1 Pump leg FC150
2 Mechanical seal SIC/SIC
3 Washer SUS304
4 Collar SUS304
5 Teflon packing PTFE
6 Casing (without guide blade) SUS304
7 Casing (with guide blade) SUS304
8 Impeller SUS304
9 Suction chamber FC150
10 Screw SUS304
11 U-nut SUS304
12 Washer SUS304
13 Wide strainer SUS304
14 Tie bolt SUS304
15 Seal ring PTFE
16 Metal presser SUS304
17 Spring washer SUS304
18 Strainer presser plate SUS304
19 Cross-recessed pan head screw SUS304
20 Sleeve
Note 1 WC
21 Bearing ring
Note 1 CERAMIC
22 Oil seal NBR
23 Oil seal NBR
24 Terminal Box ADC
25 Terminal box cover SS400
26 Motor shaft S35C+SUS403
27 Motor -
Note 1) A pump with six or fewer casing stages does not come
with the sleeve and bearing ring.
(2) Models VKA-AH-e /VKC-AH-e (VKA86AH-e, VKA96AH-e, all VKC-AH-e models)
Material
Code Part name VKA-AH model VKC-AH model
1 Pump leg FC150 SCS14A
2 Mechanical seal SIC/SIC SIC/SIC
3 Washer SUS304 SUS304
4 Collar SUS304 SUS304
5 Teflon packing PTFE PTFE
6 Casing (without guide blade) SUS304 SUS304
7 Casing (with guide blade) SUS304 SUS304
8 Impeller SUS304 SUS304
9 Suction chamber FC150 SCS14A
10 Screw SUS304 SUS304
11 U-nut SUS304 SUS304
12 Washer SUS304 SUS304
13 Wide strainer SUS304 SUS304
14 Tie bolt SUS304 SUS304
15 Seal ring PTFE PTFE
16 Metal presser SUS304 SUS304
17 Spring washer SUS304 SUS304
18 Strainer presser plate SUS304 SUS304
19 Cross-recessed pan head
screw SUS304 SUS304
20 Sleeve
Note 1 WC WC
21 Bearing ring
Note 1 CERAMIC CERAMIC
22 Oil seal NBR NBR
23 Oil seal NBR NBR
24 Air vent Brass SUS304
25 Companion flange FC150 SCS16A
26 Oil seal FKM FKM
27 Hexagon socket head cap
screw SCM SUS304
28 Terminal Box ADC ADC
29 Terminal box cover SS400 SS400
30 Motor shaft S35C+SUS403 S35C+SUS403
31 Motor - -
The structure and other specifications are subject to change without notice.

2-8
(3) Models VKA-AQ-e (VKA16AQ-e to VKA46AQ-e)
Code Part name Material
1 Pump leg FC150
2 Mechanical seal SIC/SIC
3 Washer SUS304
4 Collar SUS304
5 Teflon packing PTFE
6 Casing (without guide blade) SUS304
7 Casing (with guide blade) SUS304
8 Impeller SUS304
9 Suction chamber FC200
10 Screw SUS304
11 U-nut SUS304
12 Washer SUS304
13 Wide strainer SUS304
14 Tie bolt SUS304
15 Spring washer SUS304
16 Strainer presser plate SUS304
17 Cross-recessed pan head screw SUS304
18 Bearing ring
Note 1 CERAMIC
19 Sleeve
Note 1 WC
20 Oil seal NBR
21 Oil seal NBR
22 Terminal Box ADC
23 Terminal box cover SS400
24 Motor shaft S35C+SUS403
25 Motor -
(4) Models VKA-AQ-e /VKC-AQ-e (VKA56AQ-e to VKA66AQ-e, all VKC-AQ-e models)
Material
Code Part name VKA-AH model VKC-AH model
1 Pump leg FC150 SCS14A
2 Mechanical seal SIC/SIC SIC/SIC
3 Washer SUS304 SUS304
4 Collar SUS304 SUS304
5 Teflon packing PTFE PTFE
6 Casing (without guide blade) SUS304 SUS304
7 Casing (with guide blade) SUS304 SUS304
8 Impeller SUS304 SUS304
9 Suction chamber FC200 SCS14A
10 Screw SUS304 SUS304
11 U-nut SUS304 SUS304
12 Washer SUS304 SUS304
13 Wide strainer SUS304 SUS304
14 Tie bolt SUS304 SUS304
15 Spring washer SUS304 SUS304
16 Strainer presser plate SUS304 SUS304
17 Cross-recessed pan head
screw SUS304 SUS304
18 Bearing ring
Note 1 CERAMIC CERAMIC
19 Sleeve
Note 1 WC WC
20 Oil seal NBR NBR
21 Oil seal NBR NBR
22 Air vent Brass SUS304
23 Companion flange FC150 SCS16A
24 O-ring FKM FKM
25 Hexagon socket head cap
screw SCM SUS304
26 Terminal Box ADC ADC
27 Terminal box cover SS400 SS400
28 Motor shaft S35C+SUS403 S35C+SUS403
29 Motor - -
The structure and other specifications are subject to change without notice.

3-1
3. Transportation, conveyance, storage and installation
3.1 Precautions for transporting, moving and storing the pump
(1) Do not unpack the container unnecessarily.
If you unpack the container unnecessarily, securely pack again in such a manner that the product
body does not jump out of it and fall down during transportation, conveyance or storage.
(2) When you transport, move, or store the pump, ensure that the pump is located in a well-ventilated
place with minimum exposure to dust and moisture in an environment at an ambient temperature
of -25 to 55 degrees Celsius and humidity of lower than 85%RH. The packing materials, made
mainly of corrugated cardboards, break more easily when they absorb moisture.
(3) Check the orientation of the container and then place it in the correct orientation (not upside
down).
(4) Do not stack the containers of the product more than the allowable number of units indicated on
the packing material.
The maximum permissible number of stacks for this product is three.
(5) Use extreme care so as not to give an impact or offset load to the pump during conveyance or
transportation. The container may greatly incline depending on its center of gravity.
Warning
Before transporting or moving the product, confirm the weight of each unit
by referring to the catalog, dimensional outline drawing, and other
documents, and then determine the appropriate method.
Caution
When you lift the product by hand, pay attention to its center of gravity and
weight. Do not allow a single person to lift a product heavier than 15 kg.
Otherwise, it may put strain on the body, thus leading to an injury.
3.2 Before using the pump
When you receive the pump, check the following points first.
If there are any problems, contact the vendor from which you purchased the product.
Caution
Ensure that the delivered container is placed in the correct orientation (not
upside down) before unpacking. Pay special attention to nails especially
when opening a wooden crate. Otherwise, you may get injured.
(1) Check the nameplate to verify that the delivered product is exactly what you ordered. (Refer to 2.4.
Information indicated on the nameplates [page 2-3].)
(2) No part of the product is damaged during transportation.
(3) All fastening parts including bolts and nuts are securely tightened.
(4) All the accessories that you ordered have been delivered.
Warning
Do not hold the strainer on the tip of the pump during handling. Failure to
observe this may cause the strainer to come off, resulting in an injury or
damage.

3-2
Caution
Do not run the pump at a frequency exceeding 60 Hz. Failure to observe
this may overload the motor, causing it to burn out.
3.3 Precautions for installation
Warning
Before rotating the main shaft by hand to check it, be sure to turn off the
main power. Sudden operation of the pump may cause an accident.
(1) Install the product in a well-ventilated place with minimum exposure to dust and moisture. (Refer
to the Installation location in 2.3. Standard specifications [page 2-2]). In particular, avoid
installing the product in a place where the liquid used is splashed on the motor section.
Warning
Do not install the product in a place exposed to high temperature and
moisture.
Failure to observe this may cause heating, ignition and electric leakage.
(2) Install the product in such a way that the motor can take in air.
(3) Select a flat place for the mounting surface and then install the product
so as not to rattle.
(4) Select a place convenient for maintenance and inspection. Ensure
maintenance clearances.
(5) The mounting surface should be strong enough to prevent vibration
from being amplified when the pump is running.
(Restrict the total amplitudes in X, Y and Z directions (see the right
figure) to 33μm at 50 Hz and 29μm at 60 Hz during pump operation.)
(6) It is necessary to make a mounting hole larger than the outside
diameter of the pump section so as to put the pump section into the
tank (oil tank). See the dimensional outline drawing.
(7) Install the product so that the main shaft becomes vertical.
(8) Use the product with the pump section immersed under the oil level.
The suction port should be at least 5 mm away from the bottom surface
of the tank (oil tank) to prevent the strainer from getting clogged with
cutting powder, dirt, or other materials. If it is predicted that cutting
powder, dirt, or other materials accumulate on the bottom of the tank,
ensure as large a distance as possible at the design stage.
Note
The liquid level in the tank (oil tank) should always be above the minimum
liquid level.
Keep the suction port of the pump at least 5 mm away from the bottom of
(oil tank).
(9) The product is coated, but if it is overcoated to another color for unavoidable reasons, lightly
roughen the product surface with sand paper and then coat it. The adhesion properties of the
coating film are improved. (Be sure to check that a paint to be used is applicable to overcoating.)
(10) When the liquid leaks from the product, install it in a place where it is not subjected to secondary
damage.
X: Measurement
direction
Z: Measurement poin
t
X, Y: Measurement
point
Y: Measurement
direction
Z: Measurement
direction
Min. 5mm
Suction
Bottom of
the tank
Highest
liquid level
Lowest
liquid level
Discharge

3-3
(11) If the system could be exposed to the freezing temperature in winter, be sure to apply antifreeze
measures such as heat insulation and heater installation to the pump, valves, piping, etc.
(12) Install the pump securely.
Recommended size of pump mounting bolt: M6
Note
Securely tighten the bolts. Otherwise, it may cause abnormal vibration or
other problems.
(13) To lift the pump, install an eyenut and a hexagon head bolt at two
(diagonally-located) mounting holes of the pump, and pass a rope
etc. through the eyenuts.
Eyenut size: M6,
Bolt size: M6 x 20L (nominal length [length below the head]: 20
mm)
(14) Before installing the pump to equipment, place crossties (with a
height enough for the hexagon head bolts to be removed)
between the pump flange surface and pump mounting surface as
shown in the right figure, and remove the eyenuts and hexagon
head bolts installed for lifting. Afterwards, pull out the crossties
and install the pump.
Warning
When installing the pump, do not put your hands between the pump flange
and the pump mounting surface. Failure to observe this may cause an
injury.
(15) Do not lift the equipment with the pump attached. Failure to observe this may cause the units to
break and fall down.
(16) Use extreme care so as not to give an impact or offset load to the pump section during pump lifting
or conveyance. The pump may greatly incline depending on its center of gravity.
Warning
Before hoisting the equipment, refer to the catalogue or dimensional
outline drawing etc. and ensure that the total weight of the equipment does
not exceed the rated load of the hoisting device.
Caution
When lifting the product by hand, give attention to its center of gravity and
weight. Do not allow any product heavier than 15 kg to be lifted by a single
person. Failure to observe this may put a burden on the body, leading to an
injury.
(17) If the pumping liquid is cold, condensation may occur inside the motor while the pump is stopped.
Take condensation prevention measures such as installing in a fully dry room or heating and
insulating the motor during a stop.
(18) Carry out refinish painting with a period appropriate to a use environment. Threaded parts, worked
areas, coated parts for rust prevention and other parts may rust may depending on use
environments such as high humidity and dew condensation.
(19) Do not put a cover or a filter over the motor, or it may increase the temperature inside the motor
and lead to damage, fire, etc. of the product.
Eyenut
Hexagon
head bolt
Crosstie
(Height: at
least 30 mm
Pump
mounting
surface
Mounting hole
Install at two diagonally-located positions.

3-4
3.4 Precautions for piping work
(1) The pipes should be as short and straight as possible (with minimal joints and valves). Use pipes
whose bore size is equal to or larger than that of the pump. Piping which is thin and has many
bends may decrease the discharge rate.
(2) Be sure to provide pipe supports so as to prevent the weight of the pipes from acting on the pump
body.
Caution
Avoid the weight of the pipes from acting on the pump.
Failure to observe this may cause the main shaft from coming off center,
resulting in equipment damage, vibration and noise.
(3) Do not forcibly screw the pipe into the pump. Doing so may break the joint.
(4) Lay the pipes securely in such a way that the pipe connections are kept completely airtight without
leakage. Prevent liquid leakage and air leakage by use of seal tape, liquid packing or other means.
The seal tape should be wound reliably so as not to block up the piping.
(5) Use a tank (oil tank) with as larger a capacity as possible.
* A recommended capacity is at least three times the discharge volume per minute.
Too small a capacity may cause problems such as causing the liquid temperature to rise up,
causing the strainer to get clogged with cutting powder, and causing the discharge rate to
decrease due to the occurrence of air bubbles.
When pouring a liquid used into a tank (oil tank), slowly pour air so as not to trap air in.
(6) Do not allow a large amount of cutting powder, dirt, or other contaminants to get into the pump
section. Failure to observe this may clog the pump strainer, damage the pump, or significantly
deteriorate the performance. Use liquids that are subjected to secondary treatment through a net
cage, a chip conveyor, a magnetic separator, etc.
(7) If water hammer may occur, attach a pressure damper (e.g. accumulator).
(8) The companion flange type pump is packaged with a companion flange for the discharge port.
Use it as needed. When using the flange, be sure to install the supplied O-ring.
(9) If there is an upward curve of the discharge pipe, ensure that air can be vented from the section.
(10) If you provide an escape pipe on the pump discharge side, provide a sluice valve in the middle of
the escape pipe to adjust the relief volume.
Note
If the amount released from the escape pipe is too much, the temperature
of the liquid in the tank (oil tank) comes to rise easily.
(11) On completion of the piping work, clean the inside of the tank (oil tank) to prevent the suction of
foreign matter.
3.5 Precautions for wiring work
Danger
Use high-quality wiring equipment and devices, and carry out wiring work
safely and securely according to the technical standards for electrical
facilities, as well as the indoor wiring regulations.
Only qualified personnel such as licensed electrical engineers are allowed
to carry out electrical wiring work. Unqualified persons are prohibited by
law to carry out wiring work, and it is very dangerous.

3-5
Danger
Securely connect the terminals of the power cable. Loose terminals may
cause an open phase fault, which causes the motor to burn out.
(1) For the size of the power cable, refer to the following:
Model Minimum size of the cable
(200-volt class)
All models 1.6mm
(2) Be sure to install a ground fault interrupter and an overload protection device on the primary
power side of the pump.
* The starting current of the premium efficiency (IE3) motor-equipped product tends to become
higher than that of the standard efficiency (IE1) motor-equipped product. Therefore, it is necessary
to apply and verify an earth leakage circuit breaker and overload protection device on the
occasion of replacement from the IE1 motor-equipped product.
Refer to Starting current value and Rated current value in “2.5. Specification table (page 2-4).” If
you have any questions, contact Teral Inc.
Note
It is necessary to apply and verify a protective device on the primary side of
the pump on the occasion of replacement from the IE1 motor-equipped
product.
If not applied, the protective device may operate at the time of startup.
(3) When connecting to terminals, securely connect to the power
according to the right figure. (Standard voltage product)
* If there are four or more terminals, follow the connection
nameplate in the terminal box.
(4) Be sure to attach a ground wire to prevent an electric shock.
Connect the ground wire to the ground terminal inside the
control panel.
(5) Fasten the power cable to the terminal box with a cable lock so
that no tensile load acts on the motor terminal block.
(6) The position of the terminal box relative to the discharge port
can be changed in steps of 90 degrees by rearranging the frame
of the motor.
If you rearrange the frame of the motor, ask Teral Inc. about the
operating procedures.
Warning
Do not change the orientation of the terminal box.
Failure to observe this may cause the liquid to get into the terminal box,
thus imparting an electric shock.
(7) To prevent the motor from being overloaded and burned out, it is recommended to use a thermal
relay for motor protection.
(8) Carry out adequate dust-proofing and drip-proofing by a connector or gland so that cutting powder
and liquid coolant do not get into the terminal box through the external wiring hole.
Warning
Connecting a ground wire to gas or water pipes is
illegal and extremely dangerous.
Layout in the terminal box
Motor terminal
Power terminal
Ground terminal
M5
M5 M4
Standard orientation
of terminal box
Cable outlet
Discharge port

3-6
(9) Pass the power cable through a metal tube or a metal conduit for shielding, and connect a ground
wire to the outer surface of the tube.
(10) Limit the fluctuations of the supply voltage within ±10% of the rated voltage, and also limit the
fluctuations of the frequency within -5% to +3% of the rated value. Although you can run the pump
in these ranges, avoid continuous operation if the voltage is not within the range of ±5% of the
rated value or if the frequency is not within the range of ±2% of the rated value. Failure to observe
this may cause the pump to be overloaded, resulting in motor damage or a fire.
Even if the power fluctuations fall within the allowable ranges, the pump characteristics, motor
characteristics, and the temperature rise of the motor may differ from those at the rated voltage
and frequency.
(11) Precautions for using the inverter drive
• Ensure that the operation current value does not exceed 90% of the rated value.
• Ensure that the minimum frequency is set to 20 Hz.
(Contact us for operation at 20 Hz or below.)
• If the motor is powered at a different voltage, it cannot be inverter-driven. (If it is necessary to
use the motor with an inverter, contact Teral Inc.)
• An inverter-driven motor generates a magnetic sound which may sound more annoying than
those generated by the drives using unconverted commercial power.
• Although this magnetic sound does not cause an adverse effect on the quality of the motor,
some inverters allow the user to adjust the tone by changing the carrier frequency. However,
changing the frequency may reduce the allowable output of the inverter. Pay particular
attention when selecting the inverter.
• If the pump and motor produce resonance during normal operation, do not run them in the
range of the rotation speed.
Caution
Do not run the pump at a frequency exceeding 60 Hz. Failure to observe
this may overload the motor, causing it to burn out.