Power Module PM240
Hardware Installation Manual, 07/2009, A5E00807525B AD
51
Service and maintenance
5
5.1 Maintenance
The purpose of maintenance is to preserve the specified condition of the Power Module. Dirt
and contamination must be removed regularly and parts subject to wear replaced. The
Power Module comprises mostly electronic components. Apart from the fan(s), the unit,
therefore, contains hardly any components that are subject to wear or that require
maintenance or servicing.
The following points must generally be observed.
Dust deposits
Dust deposits inside the Power Module must be removed at regular intervals by qualified
personnel in line with the relevant safety regulations. The unit must be cleaned using a brush
and vacuum cleaner, and dry compressed air (max. 1 bar) for areas that cannot be easily
reached.
Ventilation
When installing the devices in a cabinet, make sure that the cabinet ventilation slots are not
obstructed. The fan must be checked to make sure that it is functioning correctly.
Cable and screw terminals
Cable and screw terminals must be checked regularly to ensure that they are secure in
position, and if necessary, retightened. Cabling must be checked for defects. Defective parts
must be replaced immediately.
Note
The actual intervals at which maintenance procedures are to be performed depend on the
installation conditions and the operating conditions.
Siemens offers its customers support in the form of a service contract. For further details,
contact your regional office or sales office.
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