10.2.2 Cleaning
WARNING
Electric shock when cleaning due to failing to observe the protection class
When cleaning, especially with high-pressure cleaning equipment, water can enter energized
parts and cause an electric shock.
• Clean the motor in a manner appropriate for its protection class.
• Avoid pressurized water on connectors, terminal boxes, and other live parts.
Clean the motor of dust and dirt as required. In this way, you ensure adequate heat dissipation.
10.2.3 Motor replacement on reaching the bearing life
Motor bearings are wearing parts. They must be replaced after a dened number of operating
hours.
At medium loads, the motor bearings last approx. 25000 h.
The procedure for replacing the motor bearing depends on the size of the motor.
For 1F☐2☐03 ... 1F☐2☐05 motors, it is not possible to replace the motor bearings. Replace
these motors in their entirety.
Replacement of the motor bearings is only intended as from 1F☐2☐06.
Especially favorable ambient conditions, such as low average speed, low radial force (transverse
force) and vibration load can prolong the interval until motor replacement.
Note
Premature bearing and motor replacement
Harsh operating conditions, e.g. continuous operation at n
max
, high vibration/shock loads,
frequent reversing duty reduce the bearing or motor replacement interval by up to 50 %.
The maintenance and repair of the motor can be performed in authorized Siemens Service
Centers all over the world.
Contact your personal Siemens representative if you would like to take advantage of this service.
More information is provided in Chapter "Repair, replacing the motor (Page 98)".
Maintenance
10.2 Inspection and maintenance
SIMOTICS S-1FK2 synchronous motors for SINAMICS S120
Operating Instructions, 02/2022, A5E46089564B AD 97
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