Siemens SINAMICS DCM Operating Instructions Manual page 520

Maintenance
11.2 Replacing components
Pull the slide-in fan unit out towards you.
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Insert the new fan module and screw into place, tightening torque = 6 Nm
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Re-insert the connector
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Swivel back the support plate for the electronics and screw into place, tightening torque = 3 Nm
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Re-attach the front plate and the top cover
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Figure 11-8 Replacing fans in 1,500 - 3,000 A units (2)
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Operating Instructions, 1.2012, C98130-A7066-A1-05-7619
SINAMICS DCM DC Converter