Risk of explosion due to static charging
If you clean the motor, plastic components may become statically charged and ignite a
potentially explosive atmosphere. An explosion can occur. This can result in death, serious injury
or material damage.
• When cleaning, ensure that there is absolutely no explosive atmosphere present.
• Clean the plastic parts and components so that absolutely no static charging occurs
• Do not use compressed air for cleaning.
Explosion hazard due to increased surface temperature
Components within the motor may be hotter than the maximum permissible surface
temperature for the enclosure. For machines in type of protection Ex d or Ex t, an atmosphere
can be ignited and can cause an explosion. This can result in death, serious injury or material
damage.
• Do not open the motor in an explosive and dusty atmosphere when it is still at normal
operating temperature.
• Allow the machine to cool down before opening it.
Danger as a result of stationary parts under voltage (live parts)
Live parts represent a hazard. Touch protection against active (live) parts is no longer
guaranteed if covers are removed. The minimum air and creepage distances may be fallen below
(violated) when coming close to active parts. Touching or coming close can result in death,
serious injury or material damage.
• Carefully ensure that all of the covers are closed while operational.
• First switch o and disconnect the machine if you must remove covers. Carefully comply with
the "5 safety rules" (Page16).
• In operation, the terminal box must always be kept closed. It is only permissible to open the
terminal box when the motor is stationary and in a no voltage condition.
Risk of injury due to rotating parts
Rotating parts are dangerous. Touch protection against rotating parts is no longer guaranteed
if covers are removed. Touching rotating parts can cause sparking with subsequent ignition of
an explosive atmosphere resulting in death, serious injury or material damage.
• Carefully ensure that all of the covers are closed while operational.
• First switch o and disconnect the machine if you must remove covers. Carefully comply with
the "5 safety rules (Page16)".
• Only remove the covers when the rotating parts have come to a complete standstill.
Maintenance
9.2Inspection and maintenance
1MB..1/2/3/4 - shaft heights 63 ... 355
Operating Instructions, 11/2023, A5E52779900A 117
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