KNF AC Motor M 43 Ex
Safety
Translation of original Operating and Installation Instructions, english, KNF 121218-121646 01/13
6
3. Safety
Note the safety precautions in sections
6. Installation and
connection,
and
7. Operation
.
The motor is built according to the generally recognized rules of
technology and in accordance with the occupational safety and
accident prevention regulations. Nevertheless, dangers can result
during its use which lead to injuries to the user or others, or to
damage to the motor or other property.
Only use the motor in proper technical condition and in accordance
with its intended use in a safety and danger-conscious manner
while observing the operating and installation instructions.
Make sure that only trained and instructed personnel or specially
trained personnel work on the motor. This especially applies to
assembly, connection and servicing work.
Make sure that the personnel has read and understood the operat-
ing and installation instructions, and in particular the "Safety"
chapter.
Work on motor which could affect the explosion prevention and
protection must be performed only by the motor manufacturer.
Such work includes, for example
Repairs to the stator or rotor winding and on the terminals,
Repairs to the ventilation system,
Disassembly of machines and parts with flameproof enclo-
sure
Observe the accident prevention and safety regulations when
performing any work on the motor and during operation.
When classifying a motor environment in a hazardous area (zone),
observe the "Guidelines for the Avoidance of Dangers due to
Explosive Atmospheres with Collection of Examples – Explosion
Protection Guidelines – (EX-RL)".
In as much as special cases are concerned or there is doubt as to
the specification of the hazardous areas, inform the supervisory
authorities and have them decide.
For use in hazardous environments containing combustible gases,
vapours an aerosols the lowest ignition temperature of a possible
hazardous atmosphere must be higher than the so-called “maxi-
mum surface temperature” of the motor.
The maximum surface temperature is defined in EN 60079-0 as
the highest temperature obtainable in operation (under the least
favourable conditions, but within recognized tolerances) by any
part or surface of the motor.
The maximum surface temperature is determined by the construc-
tion of the motor, and indicated on the type-plate as the tempera-
ture class.
The motor may be used with a typical thermal motor protection
switch (see Chapter
6. Installation and connection)
only in continu-
Personnel
Work on motor
Working in a safety-
conscious manner
Classifying motor environment
Use in hazardous environment
Thermal motor protection
switch
