Nord Drivesystems B1091, Руководство по эксплуатации с инструкциями по установке

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Motors – Manual with installation instructions
36 B 1091 en-1221
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3.3 Motors for use in Zone 21 and Zone 22 according to EN 60079 and
IEC 60079
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DANGER!
Explosion hazard
All work must only be carried out with the machine at a standstill and the power to the
system switched off .
Higher temperatures than the maximum permitted surface temperature of the housing may be
present inside the motor. The motor must therefore never be opened in an explosive
atmosphere!
Failure to comply with this may result in the ignition of an explosive atmosphere.
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WARNING
Explosion hazard
Excessively heavy dust deposits must be avoided, as these impair the cooling of the device!
Impairment or obstruction of the flow of cooling air, for example due to partial or large area
coverage of the fan cover or the entry of foreign bodies fall into the fan must be avoided in
order to ensure adequate cooling.
Only cable glands and reducers which are approved for use in explosion hazard areas may be
used.
All cable glands which are not used must be closed with blind screw plugs which are approved
for potentially explosive areas.
Only the original seals may be used.
Failure to comply increases the risk of ignition of an explosive atmosphere.
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For these motors, the following information specifically or complimentarily apply.
Motors which comply with EN 60079 and IEC 60079 are suitable according to their labelling for use in
Zone 21 or Zone 22 - non-conductive dust.
Type suffix:
according to
EN 60079 Zone 21 2D e.g.: 80 L/4 2D TF
Zone 22 3D e.g.: 80 L/4 3D TF
according to
IEC 60079 Zone 21 EPL Db e.g.: 80 L/4 IDB TF
Zone 22 EPL Dc e.g.: 80 L/4 IDC TF
Labelling:
according to
IEC 60079 and
2014/34 EU
0102
II 2D Ex tb IIIC T125°C Db For Category 2 (Zone 21)
1)
II 3D Ex tc IIIB T125°C Dc For Category 3 (Zone 22 –
non-conducting dust)
1)
according to
IEC 60079 EX tb IIIC T125°C Db For Category 2
1)
Ex tc IIIB T125°C Dc For Category 3 (Zone 22 –
non-conducting dust)
1)
1) The indicated surface temperature may deviate from 125°C and can be found on the name plate.
If the motor is connected to a gear unit, the gear unit’s Ex labelling must also be observed.