Oriental motor MU Series User manual

Introduction
Before using the fan
Only qualied personnel of electrical and mechanical engineering should
work with the product. Use the product correctly after thoroughly reading
the section “Safety precautions.” In addition, be sure to observe the
contents described in warning, caution, and note in this manual.
The product described in this manual has been designed and
manufactured to be incorporated in general industrial equipment. Do not
use for any other purpose. Oriental Motor Co., Ltd. is not responsible for
any damage caused through failure to observe this warning.
Standard and CE Marking
The product is recognized by UL and certied by CSA and VDE. The CE
mark (Low Voltage Directive) is a󰀩xed to the product.
zStandards
Standards Certication body
UL 507 UL
CSA C22.2 No.113 CSA
EN 60950-1 VDE
Electrical appliance and material safety law JET
MU1025L-11 and MU825L-13 are not recognized by UL and not
certied by CSA and VDE.
MU1428S-41, MU1225M-41, MU1025S-41, MU925M-41,
MU825S-43 and MU1238 single phase 200 V type are not certied
by CSA.
MU825 type is not certied by JET.
zInstallation conditions (For EN Standards)
Overvoltage category Ⅱ , Pollution degree 2, ClassⅠequipment
When connecting to a power supply of overvoltage category Ⅲ , supply
power via the insulation transformer.
RoHS Directive
The products do not contain the substances exceeding the restriction
values of RoHS Directive (2011/65/EU).
Safety precautions
The precautions described below are intended to prevent danger
or injury to the user and other personnel through safe, correct use
of the product. Use the product only after carefully reading and fully
understanding these instructions.
WARNING
Handling the product without observing the instructions that accompany a
“Warning” symbol may result in serious injury or death.
Do not use the product in explosive or corrosive environments, in the
presence of ammable gases, locations subjected to splashing water,
or near combustibles. Doing so may result in re, electric shock or
injury.
Only qualied and educated personnel should be allowed to perform
installation, connection, operation and inspection/troubleshooting of
the product. Handling by unqualied and uneducated personnel may
result in re, electric shock or injury.
Do not transport, install the product, perform connections or
inspections when the power is on. Always turn the power o󰀨 before
carrying out these operations. Failure to do so may result in electric
shock.
The fan for classⅠequipment. Install the fan so as to avoid contact
with hands, or ground it to prevent the risk of electric shock.
Lüfter zur Verwendung in Geräten der Schutzklasse I. Die Gehäuse
der Lüfter sind mit einer Schraube und Zahnscheibe sicher mit dem
geerdeten Gehäuse des Gerätes zu verbinden.
HF-3019-16
OPERATING MANUAL Thank you for purchasing an Oriental Motor product.
This Operating Manual describes product handling procedures and safety
precautions.
Please read it thoroughly to ensure safe operation.
Always keep the manual where it is readily available.
AC Axial Flow Fans MU Series
Install the fan in an enclosure in order to prevent electric shock or
injury.
Keep the input-power voltage within the specied range to avoid re
and electric shock.
Connect the cables securely according to the wiring diagram in order
to prevent re and electric shock.
Do not forcibly bend, pull or pinch the cable. Doing so may re and
electric shock.
Turn o󰀨 the power in the event of a power failure, or the fan will
suddenly start when the power is restored and may cause injury or
damage to equipment.
Do not disassemble or modify the fan. This may cause electric shock
or injury. Refer all such internal inspections and repairs to the branch
or sales o󰀩ce from which you purchased the product.
CAUTION
Handling the product without observing the instructions that accompany
a “Caution” symbol may result in injury or property damage.
Do not use the fan beyond its specications, or electric shock, injury or
damage to equipment may result.
Keep your ngers and objects out of the openings in the fan. This may
cause injury.
Do not touch the motor during operation or immediately after stopping.
The surface is hot and may cause a skin burn(s).
Do not hold the rotating parts (blades) of the fan or lead wire. This may
cause injury.
Keep the area around the fan free of combustible materials in order to
prevent re or a skin burn(s).
To prevent the risk of damage to equipment, leave nothing around the
fan that would obstruct ventilation.
Do not touch the rotating parts (blades) when the fan is in operation.
This may cause injury. The use of the optional ngerguard is
recommended to ensure protection.
Wegen der Verletzungsgefahr dürfen die Lüfterügel bei
Ventilatorbetrieb nicht berührt werden. Der Gebrauch des als
Sonderzubehör erhältlichen Fingerschutzes ist empfehlenswert, um
erhöhte Sicherheit zu gewährleisten.
When an abnormality is noted, stop the operation immediately, or re,
electric shock or injury may occur.
The motor’s surface temperature may exceed 70 °C
(158 °F), even under normal operating conditions. If a
fan is accessible during operation, post the warning label
shown in the gure in a conspicuous position to prevent
the risk of skin burn(s). Warning label
Dispose the product correctly in accordance with laws and regulations,
or instructions of local governments.
Preparation
Verify the model number of the purchased product against the number
shown on the package label. The fan model name is listed on the fan
nameplate.
Checking the product
Verify that the items listed below are included. Report any missing or
damaged items to the branch or sales o󰀩ce from which you purchased
the product.
Fan
□ Fan
□ OPERATING MANUAL
(this document)
□ Plug cord
Fan kit
□ Fan
□ OPERATING MANUAL
(this document)
□ Finger guard
□ Mounting screws
□ Plug cord
 A plug cord is not included with the MU825 fans because of the lead
wire type.

Unauthorized reproduction or copying of all or part of this manual is
prohibited.
Characteristics, specications and dimensions are subject to change
without notice.
 and are registered trademarks or trademarks of
Oriental Motor Co., Ltd., in Japan and other countries.
© Copyright ORIENTAL MOTOR CO., LTD. 2011
Published in December 2019
T
echnical Support Tel:[phone]
8:30
A.M. to 5:00 P.M., P.S.T. (M-F)
7:30
A.M. to 5:00 P.M., C.S.T. (M-F)
www
.orientalmotor.com
Schiessstraße 44, 40549 Düsseldor
f, Germany
T
echnical Support Tel:[phone]
www
.orientalmotor.de
T
el:01256-347090
www
.oriental-motor.co.uk
T
el:01 47 86 97 50
www
.orientalmotor.fr
T
el:02-93906346
www
.orientalmotor.it
T
el:[phone]
www
.orientalmotor.com.br
• Please contact your nearest Oriental Motor oce for further information.
4-8-1Higashiueno
,Taito-ku,Tokyo 110-8536
Japan
T
el:03-6744-0361
www
.orientalmotor.co.jp
Tel:[phone]
www.orientalmotor.com.tw
Singapore
Tel:[phone]
www.orientalmotor.com.sg
Tel:[phone]
www.orientalmotor.com.my
Korea
Tel:[phone]
www.inaom.co.kr
Tel:[phone]
www.orientalmotor.co.th
Tel:[phone]
www.orientalmotor.com.cn
Tel:[phone]
www.orientalmotor.co.in
Hong Kong Branch
Tel:[phone]
How to identify the fan model
MU1225S-11 - 1
Fan model
-1: Plug cord (1m)
Blank: without plug cord
T- MU1225S-11 - GP
-G: Finger guard
Mounting screws
-GP: Finger guard
Plug cord
Mounting screws
Fan kit Fan model
Installation
Location for installation
Install it in a well-ventilated location that provides easy access for
inspection. The location must also satisfy the following conditions:
Inside an enclosure that is installed indoors
Operating ambient temperature
−30 to +60 °C (−22 to +140 °F) (non-freezing)
Operating ambient humidity 85% or less (non-condensing)
Area that is free of explosive atmosphere or toxic gas (such as sulfuric
gas) or liquid
Area not exposed to direct sun
Area free of excessive amount of dust, iron particles or the like
Area not subject to splashing water (rains, water droplets), oil (oil
droplets) or other liquids
Area not subject to continuous vibration or excessive shocks
Area free of radioactive materials, magnetic elds or vacuum
Area free of excessive electromagnetic noise (from welders, power
machinery, etc.)
When using near a switching circuit or high-frequency power supply,
the induced current may ow inside the fan due to electromagnetic
noise (conductive noise, radiative noise). If the induced current ows,
the electric corrosion is caused in the bearings of the fan. As a result,
it may generate the noise or shorten the service life of the products.
Use the fan in the environment that the electromagnetic noise does
not cause.
How to install the fan
Install the fan onto an appropriate at metal plate having excellent
vibration resistance and heat conductivity.
For air orientation and rotational direction, see the indications shown
on the fan’s side frame.
Drill holes on the mounting plate and x the fun on the plate using
screws (not supplied).
Model Screw size Tightening torque
MU825 MU1025 MU1225
MU1238 MU1428 M4 0.6 N·m (5.3 lb-in)
MU925 M3 0.4 N·m (3.5 lb-in)
For the MU925 type and MU1025 type, it is not possible to secure with
a ange on one side. Secure with anges on both sides using a screw
for piercing. When securing with a ange on one side for the MU1238
type fan, use a plain washer which outside diameter is 8 mm (0.315 in.)
or less.
Securing with flanges
on both sides
Securing with a flange
on one side
Mounting plate
Fan
Connection
 2-terminal type
Input terminal
Power supply
AIR FLOW
ROTATION
Use an optional plug code for the terminal type fan.
Note If the plug code is not used, be sure to properly insulate the
terminal.
 Lead wire type (MU825)
Power
supply
Connecting Protective Earth Terminal
Ground the motor using the motors with a Protective Earth
Terminal .
Applicable crimp terminal:
Insulated round crimp terminal
Terminal screw size: M4
Tightening torque:
1.0 to 1.3 N·m (8.8 to 11.5 lb-in)
Applicable minimum lead wire size:
AWG18 (0.75 mm2) or more
Unit [mm (in.)]
Ø4.1 (0.16) min.
4.8 (0.19) max.
9.5 (0.37) max.
Note Be sure to use the screw for grounding attached on the
product.
Overheat protection
Impedance protection means the fan will not burn out in the event of a
lockup.