HF-3127-9
O P E R A T I N G M A N U A L
AC Axial Flow Fans
MRE
Series
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.
Introduction
Before using the fan
Only qualified personnel should work with the product. Use the product correctly
after thoroughly reading the section “Safety precautions”.
The product described in this manual has been designed and manufactured for
use in general industrial machinery, and must not be used for any other purpose.
Oriental Motor Co., Ltd. is not responsible for any damage caused through
failure to observe this warning.
Standards and CE Marking
The
MRE16
and
MRE18
types are recognized by UL and certified by CSA, and
bears the CE Marking (Low Voltage Directives) in compliance with the EN
Standards.
For the safety standards, the model name in the nameplate is recognized by UL.
•
Standards
Standards
UL507, CSA C22.2 No.113
Certification Body
UL
•
Applicable standards
EN60950-1
•
Installation conditions (EN Standard)
Overvoltage category
II
, Pollution degree 2, Class
I
equipment
When connecting to a power supply of overvoltage category
III
, supply power
via the insulation transformer.
Hazardous substances
RoHS (Directive 2002/95/EC 27Jan.2003) compliant
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 flammable gases, locations subjected to splashing water, or near
combustibles. Doing so may result in fire, electric shock or injury.
•
Assign qualified personnel the task of installing, wiring, operating/controlling,
inspecting and troubleshooting the product. Failure to do so may result in fire,
electric shock or injury.
•
Do not transport, install the product, perform connections or inspections when
the power is on. Always turn the power off before carrying out these
operations. Failure to do so may result in electric shock.
•
Turn off the power in the event the overheat protection device (thermal
protector) is triggered. Failure to do so may result in injury or damage to
equipment, since the fan will start abruptly when the overheat protection
device (thermal protector) is automatically reset.
•
To prevent the risk of electric shock, use the fan for class I equipment only.
Lüfter zur Verwendung in Geräten der Schutzklasse I.
•
Install the fan in an enclosure in order to prevent electric shock or injury.
•
Be sure to ground the Protective Earth Conductor when installing the fan.
Failure to do so may result in electric shock.
Erden Sie den Motor bei der Installation mit einem Schutzerdungskabel.
Nichtbeachtung dieses Hinweises könnte einen elektrischen Schlag
verursachen.
•
Keep the input power voltage within the specified range to avoid fire and
electric shock.
•
Connect the cables securely according to the wiring diagram in order to
prevent fire and electric shock.
•
Do not forcibly bend, pull or pinch the cable. Doing so may fire and electric
shock.
•
Turn off 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 office
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 specifications, or electric shock, injury or
damage to equipment may result.
•
Keep your fingers 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
fire 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 finger guard is recommended to ensure protection.
Wegen der Verletzungsgefahr dürfen die Lüfterflügel bei Ventilatorbetrieb nicht
berührt werden. Der Gebrauch des als Fingerschutzes ist empfehlenswert, um
erhöhte Sicherheit zu gewährleisten.
•
When an abnormality is noted, stop the operation immediately, or fire, 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 figure in a
conspicuous position to prevent the risk of skin burn(s).
Warning
label
•
To dispose of the fan, disassemble it into parts and components as much as
possible and dispose of individual parts/components as industrial waste.
Preparation
Checking the product
Verify that the items listed below are included. Report any missing or damaged
items to the branch or sales office from which you purchased the product.
•
Fan ...................................................................................1 pc.
•
Power supply lead wire (
MRE10
/
MRE12
only) ..................1 pc.
•
Power supply cable (
MRE16
/
MRE18
only)........................1 pc.
•
Alarm cable (Alarm type only) ...........................................1 pc.
•
Finger guard .....................................................................1 pc.
•
Set of mounting screws.....................................................1 set
(Cross-recessed pan head screws with captive washer, hexagonal nuts with
flange, 4 pcs. each)
Screw size: M4 for
MRE10
/
MRE12
, M5 for
MRE16
/
MRE18
•
OPERATING MANUAL (this manual)................................1 copy
Note
Do not conduct insulation-resistance measurement or dielectric
voltage-withstand testing between the primary circuit (coil) and
secondary circuit (alarm circuit). Doing so may damage the alarm
circuit.
Installation
Location for installation
The fan is designed and manufactured for installation in equipment. 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 (provide vent holes)
•
Operating ambient temperature
MRE10
,
MRE12
:
−
30 to +50 °C (
−
22 to +122 °F) (non-freezing)
MRE16
,
MRE18
:
−
30 to +60 °C (
−
22 to +140 °F) (non-freezing)
−
20 to +60 °C (
−
4 to +140 °F) for low-speed alarm type
•
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 (rain, water droplets), oil (oil droplets) or
other liquids
•
Area not subject to continuous vibration or excessive shocks
•
Area free of radioactive materials, magnetic fields 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 flow inside the fan due to electromagnetic noise
(conductive noise, radiative noise). If the induced current flows, 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.
