Risk Of Explosion When Cleaning With Compressed Air - Siemens 1LA8 Operating Instructions Manual

Explosion hazard due to overheating of the machine caused by deposits of dust
Deposits of dust have a thermal insulation effect, which can lead to the machine overheating.
The maximum surface temperature of the machine cannot be adhered to. The dust can ignite,
resulting in an explosion. This can result in death, serious injury or material damage.
● Dust the machine regularly.
● Do not switch the machine on until the dust has been removed.
Risk of explosion due to excessive bearing temperature
The surface temperature cannot be maintained within maximum permissible limits if the
bearing becomes too hot. The dust can ignite, resulting in an explosion. This can result in
death, serious injury or material damage.
● Always check the bearing temperatures.
● In addition to the current-dependent overload protection device located in the three phases
9.1.2

Risk of explosion when cleaning with compressed air

Risk of explosion when cleaning with compressed air
If you clean the machine with compressed air, 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.
Do not use compressed air to clean plastic parts in an explosive atmosphere. When cleaning
the machine, make sure that the air in the vicinity of the motor is free of gas and dust.
9.1.3 Measurement of the insulation resistance and polarization index in the context of
maintenance work
Measuring the insulation resistance and polarization index (PI) provides information on the
condition of the machine. It is therefore important to check the insulation resistance and the
polarization index at the following times:
SIMOTICS TN Series N-compact 1LA8
Operating Instructions 05/2014
WARNING
WARNING
of the connecting cable, we recommend that you also monitor the temperature rise in the
machine with the aid of the temperature sensors built into the stator winding.
For the alarm and shutdown temperatures, see the "Explanatory text for the machine
dimension drawing" section.
WARNING
Maintenance
9.1 Inspection and maintenance
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