Kawamoto Pump Showa Denki U2G-70T User manual

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Gust Blower U2G Type
Instruction Manual
(Original Instructions)
Thank you for purchasing the Gust Blower.
This instruction manual provides information for the customer to safely use this blower.
Always read this manual thoroughly and fully comprehend the contents before starting work.
Please keep this instruction manual in a handy place for quick reference.
＜ Contents ＞
‘1 Introduction ・ ・ ・ ・ ・ ・ 2 ‘7 Operation ・ ・ ・ ・ ・ ・ ・ ・ 12
‘2 Specifications ・ ・ ・ ・ ・ 2 ‘8 Maintenance and Inspection ・ ・ 15
‘3 Product Configuration ・ ・ 6 ‘9 Troubleshooting ・ ・ ・ ・ ・ ・ 16
‘4 Installation ・ ・ ・ ・ ・ ・ 7 ’10 Warranty ・ ・ ・ ・ ・ ・ ・ ・ ・ 18
‘5 Piping ・ ・ ・ ・ ・ ・ ・ ・ 9 ’11 Reference ・ ・ ・ ・ ・ ・ ・ ・ 18
‘6 Electrical Work ・・ ・ ・ 11 ’12 Disposal ・ ・ ・ ・ ・ ・ ・ ・ 18
１． This product must never be disassembled, repaired or modified by any person
other than a qualified repair technician. Improper repairs could result in electric
shocks or fires.
２． Always turn the power OFF, lock it, and make sure that power is not being supplied
before starting the maintenance service. Failure to observe this could result in electric
shocks or injuries.
３． Connect the ground wire properly, and install a dedicated earth leakage or disconnector
on the power supply side. Failure to observe this could result in earth leakages,
electric shocks or fires.
４． Do not touch the blower, motor or discharged air during operation. These sections
will be very hot, and touching them could result in burns.
Read the entire user manual l to be familiar with the features of this product before operating.
Failure to operate the product correctly can result in damage to the product, personal property,
and cause serious injury.
※ We will not be liable for any accidents if you do not comply with the above.
The precautions are classified as “Warning” and “Caution” to alert of the degree of injury or
damage that could occur if handling is mistaken. 
In either case, these are important matters related to safety, and must be observed.
 ：Details which if ignored could lead to fatalities or serious injuries.
      ：Details which if ignored could lead to personal injuries or physical damage.
Special Notes
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Please check the following items upon receipt of the product.
If there are any problems, contact your dealer.
1. Confirm the upside of the package and open the package carefully. Failure to do may result in injuries.
2. Open with care, after check top and bottom. Failure to do may result in injures.
3. Check the nameplate to ensure that the correct blower has been delivered.
Check the type, output, voltage, frequency, etc. of the delivered blower in reference with the nameplate
to verify that the correct product has been delivered.
4. Check that no parts have been damaged during transportation, and that none of the bolts, nuts, etc.,
are loose. Tighten any part that is loose.
5. Check that all ordered accessories have been delivered.
6. Out of range use, Non-compliance with precautionary statements, improper repair or modification, installation
environment, Non-compliance with laws thing, accidental or intentional failure, replacement of consumable
parts, problem due to resale may not be covered by warranty.
7. When contacting us, check 「type」 and 「serial number」.
8. For disposal method of unnecessary parts and packing material, check with each local government.
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● Always use this blower within the specified product specifications. Failure to do so could result
in electric shocks, fires or air leaks, etc.
●The blower is manufactured for general industry use, and the discharged air is required to be clean.
Do not use it directly for applications (food, chemicals, semiconductor applications, etc.).
● Select a product that matches the application. Using a product for an inappropriate application will
cause faults.
● The danger. Warning and Caution labels indicate information on matters that could cause bodily harm
or property damage. Always observe the indicated information. Failure to do so could result in device
damage, electric shocks, fires or injuries, etc.
● Do not use the air not mentioned as specifications. Failure to observe this could result in earth
leakages, electric shocks or fires.
● When using for important equipment, prepare a spare blower.
Failure to observe this could result in shutdown of equipment and affect other equipments.
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２．１ Product specifications
Contents General air (free of explosive or corrosive gases)
Air Temperature －10～40℃
Humidity 90%RH or less (with no dew condensation)
Always use the blower Indoor in a location free of flammable gas or steam and at
an altitude 1,000m or lower.
Installation
location
Ambient
temperature -10 to 40°C (Use is not possible in sealed indoor area or in case)
Humidity 90%RH or less (with no dew condensation)
Installation requirements Horizontal with blower section facing downward (excluding U2G-370B series).
Noise level
[Under
ISO3744
condition]
U2G-70T 50Hz：61 dB(A) 60Hz：64.5[68.0] dB(A)
U2G-150 50Hz：65.5dB(A) 60Hz：68.5[75.6] dB(A)
U2G-370A 50Hz：67.5 dB(A) 60Hz：70.0[73.9] dB(A)
U2G-370B 50Hz：67.5 dB(A) 60Hz：70.0[73.9] dB(A)
Minimum airflow for
continuous
Use at least the minimum amount of air.
(Refer to sections 2.4、2.5 )
Motor
Type Totally enclosed fan cooled indoor type.
Phases 3phase
Voltage
200V Type 50Hz ： 200V 60Hz ： 200-220-230V
400V Type 50Hz ： 380-400V 60Hz ： 400-440-460V
(Note) For specifications other than those listed above, please check the delivery specifications.
２．２ How to read the model
２．３ Nameplate
No. 項目
① Type
② Code No.
③ Output (kW)
④ Frequency (Hz)
⑤ Voltage (V)
⑥ Current (A)
⑦ Rotation Speed (min⁻¹)
⑧ Power Factor
⑨ Efficiency (%)
⑩ Ball Bearing
⑪ Ball Bearing
⑫ Air capacity (m³/min)
⑬ Static Press (kPa)
⑭ Serial No.
⑮ Manufactured Date
⑯ Mass (kg)

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２．４ Table
Type U2G-70T U2G-150 U2G-370A U2G-370B
Output [kW] 0．75 1．5 3．7 3．7
Frequency [Hz] *1 50 60 50 60 50 60 50 60
Rated voltage [V] *2
200V class 200
200
220
230
200
200
220
230
200
200
220
230
200
200
220
230
Rated current [A]
200V class 2.6
3.6
3.4
3.3
5.9
7.5
7.1
6.9
10
13
12.3
12
12.3
16.3
15.3
15
Rated voltage [V] *2
400V class
380
400
400
440
460
380
400
400
440
460
380
400
400
440
460
380
400
400
440
460
Rated current [A]
400V class
1.3
1.3
1.8
1.7
1.7
2.9
3
3.8
3.6
3.5
4.9
5
6.5
6.2
6
6.2
6.2
8.2
7.7
7.5
Airflow [m
3
/min] 1.6 2 2.5 3.15 3.15 4 5 6.5
Static pressure [kPa] 6.2 7.8 7.2 8.8 9.8 12 8.5 10
Minimum airflow for continuous discharge
[m
3
/min] *3 0 0.1 0.2 1.3 0.8 1.6 1 2.7
Minimum airflow for continuous suction
[m
3
/min] *3 0 0 0 0 0 0 0.7 1.5
Approx. weight [kg] 22.5 33 48 55
※１：Within -5～+3% rated frequency at motor. ※２：Within ±10% rated voltage at motor.
(Note) For specifications other than those listed above, please check the delivery specifications.
Type U2G-70TC U2G-150C U2G-370AC U2G-370BC
Output [kW] 0．75 1．5 3．7 3．7
Frequency [Hz] *1 50 50 50 50
Rated voltage [V] *2
200V class 200 200 200 200
Rated current [A]
200V class 2.6 5.9 10 12.3
Rated voltage [V] *2
400V class 380 380 380 380
Rated current [A]
400V class 1.3 2.9 4.9 6.2
Airflow [m
3
/min] 1.6 2.5 3.15 5
Static pressure [kPa] 6.2 7.2 9.8 8.5
Minimum airflow for continuous discharge
[m
3
/min] *４ 0 0.2 0.8 1
Minimum airflow for continuous suction
[m
3
/min] *４ 0 0 0 0.7
Approx. weight [kg] 22.5 33 48 55
※１：Within -5～+3% rated frequency at motor. ※２：Within ±10% rated voltage at motor.
(Note) For specifications other than those listed above, please check the delivery specifications.

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Type U2G-70TU U2G-150U U2G-370AU U2G-370BU
Output [kW] 0．75 1．5 3．7 3．7
Frequency [Hz] *1 60 60 60 60
Rated voltage [V] *2
200V class
208
230
208
230
208
230
208
230
Rated current [A]
200V class
3.4
3.2
6.9
6.4
11.5
11.0
16
15
Rated voltage [V] *2
400V class 460 460 460 460
Rated current [A]
400V class 1.6 3.2 5.6 7.5
Airflow [m
3
/min] 2 3.15 4 6.5
Static pressure [kPa] 7.8 8.8 12 10
Minimum airflow for continuous discharge
[m
3
/min] *４ 0.1 1.3 1.6 3.3(208V) 2.7
Minimum airflow for continuous suction
[m
3
/min] *４ 0 0 0 1.5
Approx. weight [kg] 22.5 33 48 55
※１：Within -5～+3% rated frequency at motor. ※２：Within ±10% rated voltage at motor.
(Note) For specifications other than those listed above, please check the delivery specifications.
※４：Minimum airflow for continuous
２．５ Outline drawing
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Minimum airflow for continuous use 
Continuous use possible
at solid line

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3
10 1
2
4
14 15
13 12 11
5
8
9
7
6
※Caution label
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３．１ Structural drawing
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No.
Name Material No. Name Material
1 Bearings ― 9 Bolt SWRM
2 Bearings ― 10 Casing cover FCD500
3 Motor bracket FC200 11 Support SPCC
4 Casing ADC12（AC4A） 12 Sound absorbing material PUR（MF）
5 Spacer C2801P 13 Case cover ADC12（AC4A）
6 Impeller ADC12（AC4A） 14 Fan PA
7 Impeller washer SPCC 15 Fan cover SPCC
8 Washer with outer claw SPCC
(Note) The specifications and structure, etc., are subject to change without notice.
※( ) is for U2G-370B series.
３．２ Standard attachment
Name Q’ty
Instruction Manual 1
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●Before hoisting the blower unit during unloading, loading, and installation, check the product
catalog, the installation drawing, and instruction manual, etc., to verify the blower unit weight
and the hoist method. Do not attempt to hoist a blower unit that exceeds the hoist’s rated
load. Incorrect hoisting can result in drops or injuries.
●Security install the blower as explained in the instruction manual. Install the blower horizontally
and secure it with bolts. Improper installation could result in electric shocks, fires or injuries
from dropping.
●Install the product according to applicable laws and regulations (Electrical Installation
Technical Standards, Wiring Regulations). Failure to do so is not only illegal, it may result in
air leaks, electric shocks or injuries.
●Do not install in places such as machine or chemical plants where harmful gases from acids,
alkalis, organic solvents, or paints, or gases containing corrosive elements are produced, or in
dusty locations. Failure to observe this could lead to earth leakages or fires.
●Do not incinerate resin and rubber parts on site.There is a risk of generating harmful gas.
Please check with each local government for the processing method.
●In consideration of the device life, make sure that the area around the equipment is well
ventilated. Select a place that is free of dust, corrosive or explosive gas, salt, moisture, steam,
and dew condensation, and where the product protected from wind and rain or direct sunlight.
A poor environment could degrade motor or control panel's insulation, etc., and can cause
earth leakages, electric shocks or fires.
●Do not use in an explosive atmosphere. There is a risk of fires.
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●Do not apply impact on the devices, or tilt over. There is a risk of damage.
●Prepare a spare blower in case the blower stop working. Equipment may stop working.
●Screw the companion flange into the piping after removed from the blower. There is a risk of damage.
●Do not place objects or people on top of the device. There is a risk of injuries or damage to equipments.
●Please install a warning buzzer or the like in case of a malfunction so that you can check the situation.
If a malfunction occurs, it may lead to a serious accident before you know it.
●Install in the place of altitude 1,000m or less. It may result failure and risk of cannot function
properly.
●Tighten certainly in the screw part of piping using seal adhesive. Failure to observe this could
result in air leaks.
●Always clean the area before starting installation or inspection, etc. There is a risk of injuries
from slipping or tripping, etc.
●Please install the piping as below. There is risk of cannot function properly.
・As short as possible, reduce bending points.
●Do not install in location where there are obstacles that may obstruct ventilation for motor cooling.
It may cause damage, burnout, or fire.
●When installing a terminal box cover, be careful not to get your fingers caught.
Failure to do so may cause injuries to fingers.
●When unpacking, be careful of needles and staples. There is a risk of injuries.
●Do not cover the product with the plastic bag from the packaging. There is a risk of suffocation.
４．１ Installation
１．Select the location below for installation.
・ Flat and strong place with no irregularities.
(Place with external vibration acceleration about 6.9 m/s (0.7G) or less).
・ Well ventilation location, not exposed to direct sunlight and any liquid.
・ The place that the ambient temperature around motor does not exceed 40℃.
・ The place that you can clearly read the product nameplate.
(Do not remove the nameplate)
・ The space required for maintenance and inspection.
(Install the product 30mm or more away from walls and
ceiling.)
(Please open one side.)
２．Wear appropriate protective equipment such as helmets and
gloves when working.
３．When transporting the blower by hanging it, attach the hook to
the eye bolt on the main body, or use a nylon sling.
Be careful not to injure yourself when carrying by hand.
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４．Installation direction
Acceptable Acceptable Acceptable Not acceptable Not acceptable
※U2G-370B series is horizontal only.
５．When installing, make sure to fix it using the mounting holes in the blower securely.
Dimensions for installation is as follows.
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５．1 Piping
１．Install piping supports so that the piping’s load is not applied directly onto the blower.
２．Secure a flexible hose or pipe length of 1 m or more.
Do not put fingers in the discharge or suction port while driving. There is a risk of injuries.
３．Attach a special accessory or a commercially available air filter to the discharge and suction port.
Do not inhale the release powder of the sound absorbing material. There is a risk of suffocations or
damaged.
(Note) If the piping is long or thin, or has many bents or obstacles, the static pressure and air volume will drop.
TYPE D E F H K M
U2G-70T
U2G-70TC
U2G-70TU
U2G-150
U2G-150C
U2G-150U
U2G-370A
U2G-370AC
U2G-370AU
U2G-370B
U2G-370BC
U2G-370BU
14
18
159 12 12 225
14 115 187 12 15 260
95
202 15 15 290
15 140 146 15 15 300
140

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４． Connection
For hose
Select a flexible hose that can withstand the blower pressure.
The temperature on the discharge side will be high depending on the amount of air used,
please use a pipe made from metal or high heat resistance.
For threaded piping
Fix the piping with suspension fittings or brackets, etc., so that the weight of the pipe or external
loads is not applied on the blower connection.
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