9.4.3.1 Cleaning aluminum parts
The surface of untreated aluminum is always covered by a thin but dense oxide skin. This
natural oxide layer acts as surface protection and is the reason for the good weathering
resistance of aluminum materials. In most cases, this means that additional protective
measures are superfluous.
● Remove greasy layers using ethyl alcohol.
● If there are other very dirty areas, use ESD-compliant fiber or plastic brushes for cleaning.
NOTICE
Corrosion damage caused by unsuitable cleaning agents and cleaning instruments
Using unsuitable cleaning chemical agents and cleaning instruments may transfer
metallic, corrosion-inducing impurities onto the aluminum. This can result in corrosion
damage.
● Only use cleaning agents that are suitable for aluminum.
● Use ESD-compliant brushes and cloths.
● Do not use cleaning cloths and brushes that have already been used to clean copper,
brass, bronze or other heavy metals.
● Use neither brass, bronze, or steel-wire brushes nor cloths or steel wool interwoven
with copper wire.
9.4.4 Visual inspections
9.4.4.1 Equipment for visual inspections
You require the following basic equipment to carry out the visual checks and maintenance work:
● Mirror
● Flashlight
● Torque wrench for tightening screws
9.4.4.2 Checking the filter mats
● Check the air filters in the cabinet doors for pollution.
● Clean the filter mats or replace them if the air flow is obstructed.
See also
Cleaning (Page 178)
Maintenance
9.4 Inspection and maintenance
SINAMICS GM150 6SL3810-2LN31-8AA2
Operating Instructions Rev.201910281332 EXAMPLE 179
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