ORIX MRW-18, MRS20-BUL, MRS20-E, MRS20-DUL, MRS20-TUL Operating Manual

HF-3004-8

© Copyright ORIENTAL MOTOR CO.,LTD. 2000

Thank you for purchasing ORIENTAL MOTOR products.
Please read this operating manual thoroughly before
installing and operating the fan, and always keep the
manual where it is readily accessible.

AC Axial Flow Fans MRS Series

MRW18 Type

OPERATING MANUAL

1. Precautions

1.1 Precautions for Installation

●Do not use in a place where there is flammable gas and/or corrosive gas.

●Fans for use only in equipment of protection class Ⅰ.

Lüfter zur Verwendung in Geräten der Schutzklasse Ⅰ.

●Connect the ground wire to the ground terminal inside the terminal box.

Das Erdungskabel wird an dem als Erde gekennzeichneten Pol im Anschluβkasten angeklemmt.

●When installing the fan into your equipment, ensure that the motor lead wires are fixed and do not move.
In addition, do not apply any pressure to these lead wires.

●Installation must be performed by a qualified installer.

1.2 Precautions for Operation

●Always turn off power to thermally protected fan before conducting checks or performing work on the fan.
These types of fans will restart automatically when fan temperature falls below a certain level.

●The enclosure temperature of this fan can exceed 70 (depending on operation conditions).

In case fan is accessible during operation, please attach the following warning label so that it is clearly visible. Warning label

●Do not touch the fan blades when the fan is in operation.

The use of the optional fingerguard is recommended to ensure protection.

Wegen der Verletzungsgefahr dürfen die Lüfterflügel bei Ventilatorbetrieb nicht berührt werden.
Der Gebrauch des als Sonderzubehör erhältlichen Fingerschutzes ist empfehlenswert, um erhöhte Sicherheit zu gewährleisten.

〈Table of Contents〉

1. Precautions････････････････････････Page 1 4. Installation ･･･････････････････････ Page 3

2. Checking the package contents

･･･････Page 1 5. Alarm Function ･･･････････････････ Page 4

3. Connection

･････････････････････････Page 2 6. Overheat Protection ･･･････････････Page 4

2. Checking the package contents

2.1 Checking the contents

Please make sure that the package contains all of the items listed below.
Contact your nearest ORIENTAL MOTOR office if any of these items are not included or are defective.

・Fan･･････････････････････････････ 1 piece
・Capacitor･････････････････････････1 piece
・Capacitor cap･････････････････････ 1 piece

(Capacitor and Capacitor cap come only with MRS20 single-phase models and MRS18/MRS16 and MRW18 single-phase models with alarm circuits.)

・Operating manual (this manual)･････ 1 piece

2.2 Checking the model name

This manual covers the products specified below.
Please make sure that the model, voltage, current as you ordered by the nameplate.

［Standard type］

MRS20-BUL, MRS20-DUL, MRS20-E, MRS20-TUL, MRS18-BUL, MRS18-DUL, MRS18-E, MRS18-TUL,

MRS16-BUL, MRS16-DUL, MRS16-E, MRS16-TUL, MRS14-TUL

［with electronic type Alarm circuit］

MRS20-BM, MRS20-DM, MRS20-EM, MRS20-TM, MRS18-BTM, MRS18-DTM, MRS18-ETM, MRS18-TTM,

MRS16-BTM, MRS16-DTM, MRS16-ETM, MRS16-TTM, MRS14-TTM

［with contact type Alarm circuit］

MRS16-BTA, MRS16-DTA, MRS16-TTA, MRW18-BTA*, MRW18-DTA*, MRW18-TTA*

C

1

3.Connection

3.1ConnectionDiagrams

MRS20

MRS18,MRS16

MRW18

MRS14

MRS16

single-phase models
with electronic type alarm circuit

Black
Gray
White

Black

Ground

Capacitor

Line

Orange
Alarm lead wires

Black
Gray
White

Black

Ground

Orange
Alarm lead wires

U
V

W

Black
Gray
White

Ground

Capacitor

Line

Black
Gray
White

Ground

U
V

W

1
2
3

Line

Capacitor

Ground

Orange

Black

Alarm lead wires

1
2
3

Line

Capacitor

Ground

White

Black

Alarm lead wires

1
2
3

Ground

Orange

Black

Alarm lead wires

U
V

W

1
2
3

Ground

White

Black

Alarm lead wires

U
V
W

1
2
3

Line

Ground

1
2
3

Ground

U
V

W

1
2
3

Ground

Orange

Black

Red

Alarm lead wires

U
V
W

Alarm lead wires

White

Black

Ground

Capacitor

Line

1
2
3
4

Alarm lead wires

White

Black

Ground









1
2
3
4

U
V
W

MRS18

MRS16

MRW18

3.2Inside the terminal box

MRS14

1

2

3

123

Ground terminal (green)

Ｍ4×8

Terminal screws

3-M4×12

1

2

3

1234

Terminal screws
3-M4×12

Ground terminal (green)
Ｍ4×8

1

2

3

132

Terminal screws

Ground terminal (green)

Ｍ4×8

3-M4×12

Ground terminal (green)

1

2

3

1

2

4

3

4

Terminal screws
4-M4

The recommended tightening torque for the terminal screws is 1.4Ｎ･ｍ(198.26oz-in).

single-phase models
with electronic type alarm circuit

single-phase models
with contact type alarm circuit

single-phase models
with contact type alarm circuit

three-phase models
with contact type alarm circuit

three-phase models
with electronic type alarm circuit

three-phase models
with electronic type alarm circuit

three-phase models
with electronic type alarm circuit

three-phase models
with contact type alarm circuit

Fans are recognized by UL and certified by CSA and VDE.

・Standards UL507, CSA C22.2 No.113, EN60950
・Approval Conditions for EN Standards Overvoltage categoryⅡ, Pollution degree 2, Class Ⅰ equipment

*The certificate of the MRW18 types by VDE is valid only for the fan assembly itself. The capacitor is not included in the certificate.

However, both the fan assembly and capacitor combined have been tested against and have passed EN60950 Annex B.8.
The

MRW18 types are recognized by UL under CSA standard (C-UL).

three-phase models standard type

three-phase models standard type

single-phase models standard type

single-phase models standard type

2

4.1 Mounting the fan

To mount the fan, drill holes in the machinery in which it will be installed
referring to Panel-Cut-Out ( see General Catalog ) and then fasten the
fan with screw.
The direction of airflow is indicated by the AIRFLOW mark on the side
of the fan frame. The arrow points in the direction of the outlet.
The rotation arrow indicates the direction of rotation. Screws for attaching are not provided.

Please use the proper screws.

4.2 Mounting the capacitor

(MRS20 Single-phase models and MRS18/MRS16 and MRW18 single-phase models with alarm circuits.)

Before mounting the capacitor, check to see that the capacitance of the capacitor provided,
matches the capacitance indicated on the fan's nameplate.

Use M4 screw (not provided) to mount the capacitor.
Note : Tighten the capacitor mounting screw with a torque of 1 N

･m(141.61oz-in)

or less in order to prevent damaging the mounting leg.

4.3 Mounting the capacitor cap

(MRS20 Single-phase models and MRS18/MRS16 and MRW18 single-phase models with alarm circuits.)

Use the capacitor cap provided for insulation of the capacitor terminal connections.

① Pass the lead wires through the capacitor cap as shown in figure.
② Connect the lead wires to the terminals or use terminal ends.
③ Cap the capacitor with the capacitor cap.

4.4 Capacitor Connection (case of 4-terminal type : MRW18 type)

The capacitor internal wiring is as follows:
Capacitor terminals are internally electrically connected in twos;
A-B and C-D for easy connection.
For easy to install terminals use #187 series AMP terminals.
For lead wire connection, use one lead wire for each individual terminal.

φ4.3(.17DIA.)

4. Installation

Install the fan and capacitor in locations that meet following conditions.

・Indoors (the product is designed and manufactured to be mounted in a machine.)
・Ambient temperature −10 (14ºF)〜＋60 (140ºF) (Non-freezing)

(

−10 (14ºF)〜＋50 (122ºF) for MRW18 type)
・Ambient humidity 0〜85% (Non-condensing)
・No explosive, flammable, and/or corrosive gas.
・No exposure to direct sunlight.
・No splashing of water, or exposure to dust or debris.
・No oil or grease, organic solvents, acid or alkaline chemicals.
・No continuous vibration or excessive shock.
・Overvoltage categoryⅡ, Pollution degree 2, ClassⅠequipment (EN standard).

Model

Screw

Dimensions

Tightening

torque

MRS14 type
Other MRS series

MRW18 type

M4

M5

0.6N･m(84.97oz-in)

1.2N･m(169.93oz-in)

(case of 2-terminal type)

2

1

3

Capacitor cap

Capacitor

(case of 2-terminal type)

A

B

C

D

AMP #187

＜Crimp style terminals that can be used＞ Unit=mm(inch)

●Round terminal type with insulation ●U-shaped terminal type with insulation

V1.25-4 AV1.25YS4A

(JAPAN SOLDERLESS TERMINAL MFG. CO., LTD.) (JAPAN SOLDERLESS TERMINAL MFG. CO., LTD.)

or other equivalent product or other equivalent product

3

Unit=mm(inch)

φ

4.3(.17DIA.)min.

9(.35)min.

9(.35)min.

4.3(.17)min.

8(.31)max.

8(.31)max.

5. Alarm Function

■with electronic type alarm circuit

An alarm (high-level) signal is output when the fan's rotation speed falls below 1800±300 r/min.
Maximum voltage : Vout max.

＝30V DC

Leakage current : I

＝250μA max.

Maximum current : lout max.

＝15mA

Output saturated voltage : Vout(sat)

＝0.4V max.

■with contact type alarm circuit

Contact to be made when the fan's rotation speed falls below 1800±300 r/min.
Output rating : resistance load 10VA max. (100V max. and 0.5A max. )

Alarm Wiring
with electronic type alarm circuit with contact type alarm circuit
except for the

MRS14-TTM MRS14-TTM

Note :Except for the MRS14-TTM, the alarm circuits do not have a delay function.

Avoiding detection, when starting the fan, for example, requires an external delay function.
Set the delay time to 10 seconds (min.)

6. Overheat Protection

To prevent burning out the windings as a result of overheating, MRS series and MRW18 type fans have been designed with a
protector explained below.

Thermal protector ; Automatic return type
Operating temperature of thermal protectors

Open : 120

± 5 (248ºF±9ºF)

Close : 77

±15

(170ºF

± 27ºF)

Black

White

Alarm output

Black

Red

Orange

Alarm output

GND

5VDC

Black

Orange

Alarm output

GND

4

●Characteristics, specifications and dimensions are subject to change without notice.

●Please contact your nearest ORIENTAL MOTOR office for further information.

TAIWAN ORIENTAL MOTOR CO.,LTD.

Tel:[phone] Fax:[phone]

SINGAPORE ORIENTAL MOTOR PTE LTD.

Tel:[phone] Fax:[phone]

ORIENTAL MOTOR KOREA CO.,LTD.

Tel:[phone] Fax:[phone]

ORIENTAL MOTOR CO.,LTD.
Headquarters

Tel:[phone] Fax:[phone]

ORIENTAL MOTOR (EUROPA) GmbH
Headquarters and Düsseldorf Office

Tel:[phone] Fax:[phone]

Munich Office

Tel:[phone] Fax:[phone]

Hamburg Office

Tel:[phone] Fax:[phone]

ORIENTAL MOTOR (UK) LTD.

Tel:[phone] Fax:[phone]

ORIENTAL MOTOR (FRANCE) SARL

Tel:[phone] Fax:[phone]

ORIENTAL MOTOR ITALIA s.r.l

Tel:[phone] Fax:[phone]

ORIENTAL MOTOR U.S.A. CORP.

Los Angeles Office Tel:[phone] Fax:[phone]

San Jose Office Tel:[phone] Fax:[phone]
Chicago Office Tel:[phone] Fax:[phone]
Cincinnati Office Tel:[phone] Fax:[phone]
Austin Office Tel:[phone] Fax:[phone]
New York Office Tel:[phone] Fax:[phone]
Boston Office Tel:[phone] Fax:[phone]
Atlanta Office Tel:[phone] Fax:[phone]
Canada Office Tel:[phone] Fax:[phone]

Technical Support Line:[phone]

Available from 8:30 AM to 8:00 PM, Eastern Time