Cleaning Aluminum Parts; Visual Inspections; Equipment For Visual Inspections; Checking Hoisting Solenoids And Security Bolts - Siemens Sinamics GM150 6SL3835-2LN44-2AA0 Operating And Installation Instructions

Maintenance
9.4 Inspection and maintenance
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.
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 hoisting solenoids and security bolts

● Check the hoisting solenoids and security bolts at regular intervals.
● Replace defective hoisting solenoids and security bolts before (re)commissioning.
9.4.4.3

Checking the isolating clearances

● Slight, dry, non-conducting contamination is permitted.
● Remove contamination caused by dust in conjunction with high humidity.
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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.
SINAMICS GM150 6SL3835-2LN44-2AA0
Operating Instructions Rev.201910281250 MUSTER