Siemens Sinamics S120 Manual page 813

Release and withdraw the connector (1).
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Release the catch (2) and remove the fan.
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Table 14- 2 Installing a fan
Size 50 mm
Before installing the fan, please note the airflow direction. The arrow on the fan must point toward the cooling ribs.
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Push the fan into a position where it is completely latched.
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Caution: Do not crush the connecting cables!
Insert the connector until it latches into place.
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Attach the fan cover.
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Booksize Power Units
Manual, (GH2), 04/2014, 6SL3097-4AC00-0BP6
Size 100 mm
Service and Support Booksize
Sizes 150 mm and 200 mm
14.2 Replacing the fan
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