Siemens 1MB115 Installation And Maintenance Manual page 76

2.4.3.4 Releasing the rotor shipping brace before commissioning
If one is being used, release the rotor shipping brace before
commissioning.
2.5 Ensure cooling
!
Overheating and failure of the motor
Death, severe injury or material damage can occur if you do not carefully
observe the following points.
• Do not obstruct ventilation.
• Prevent the air expelled by neighboring equipment from being
• For machines with a vertical type construction with air entry from
• If the shaft extension is facing upwards, liquid must be prevented from
!
Damage caused by small parts falling in
Material damage and injury can occur if the fan is destroyed and therefore
the motor overheats.
• For types of construction with the shaft extension facing downwards,
• Ensure that the cooling air flow is not reduced as a result of covers and
For machines with external fans, install an interlock circuit that prevents the
main machine being switched on if the external fan is not operational.
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WARNING
immediately sucked in again.
above, prevent the ingress of foreign bodies and water in the air entry
openings (standard IEC / EN 60079-0).
entering by moving along the shaft.
WARNING
prevent small parts from falling into the fan cover by providing suitable
covers (standard IEC / EN 60079-0).
that the minimum air clearances are maintained.