Maico MV 25-1 설치 지침 매뉴얼 - 페이지 5

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MV 16-1, MV 25-1 motor protection switch

MV 16-1, MV 25-1 motor protec-

tion switch

1 Preface

Please read these instructions carefully be-

fore installation and using for the first time.

Also read the installation instructions of the

fan to be connected. Follow the instructions.

• Installation, electrical connection, commission-

ing, fault rectification, maintenance and repair

may only be undertaken by qualified electri-

cians in accordance with the applicable elec-

trical engineering regulations → DIN EN

50110-1, DIN EN 55011 (VDE 0875), DIN EN

60204-1, DIN EN IEC 60947-4-1 VDE

0660-102:2020-05 Low voltage switching

devices.

• Requirements for qualified electricians: Spe-

cialist training and knowledge of technical

standards, EU Directives and EU Ordinances.

• Pay attention to the valid accident prevention

regulations.

2 Overview

1 Housing cover with splash water protec-

tion

2 OFF button (red)

3 ON button (black)

3 Scope of delivery

Motor protection switch and these installation in-

structions.

4 Intended use

Motor protection switch for protecting the

three-phase AC fans. With main contactor and

control fuses. For fans with integrated thermal

switch and fitted TB thermal contacts. For indoor,

surface-mounted wall installation.

5 Function

The motor protection switch protects the fan mo-

tor against over-voltage/overheating. If the permit-

ted temperature in the motor winding (control cir-

cuit – TB thermal contact) is exceeded, the main

contactor drops out and disconnects the motor

from the mains. After the motor winding has

cooled down, which can take up to 30 minutes

depending on the fan, a restart interlock in the

unit prevents the automatic switch-on of the mo-

tor.

To switch back on → Fault rectification.

6 Safety instructions

CAUTION Risk of injury due to fan start-

ing up after a power failure or when working

in the fan's danger zone.

The motor protection switch reacts to overheat-

ing, e.g., in the event of over-voltage. If cooled

after a power failure, the fan motor can start up

automatically. Do not reach into the area

around the fan impeller and do not stick in

objects near the impeller.

Generally disconnect the fan from the power sup-

ply when working in the fan's danger zone (dur-

ing installation, cleaning, maintenance and repair

work).

DANGER Risk of explosion if explosive

gases/dusts are ignited.

Never use unit in an explosive atmosphere.