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NOTICE
Machine damage caused by foreign bodies
Foreign bodies such as dirt, tools or loose components, such as screws etc., can be left by
accident inside the machine after maintenance is performed. These can cause short circuits,
reduce the performance of the cooling system or increase noise in operation. They can also
damage the machine.
● When carrying out maintenance work, make sure that no foreign bodies are left in or on
● Securely attach all loose parts again once you have completed the maintenance
● Carefully remove any dirt.
Note
Operating conditions and characteristics can vary widely. For this reason, only general
intervals for inspection and maintenance measures can be specified here.
Risk of explosion due to static charging
If you clean the machine with compressed air, plastic components may become statically
charged and create 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 machine is free
9.1.2
Measuring the insulation resistance during the course 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:
● Before starting up a machine for the first time
● After an extended period in storage or downtime
● Within the scope of maintenance work
The following information is provided regarding the state of the winding insulation:
● Is the winding head insulation conductively contaminated?
● Has the winding insulation absorbed moisture?
SIMOTICS FD 1MH1
Operating Instructions 08/2017
the machine.
procedures.
WARNING
of gas and dust.
Maintenance
9.1 Inspection and maintenance
135
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