Replacing Fans In The Fan Subassembly During Operation - Siemens SIMATIC S7-400 Installation Manual

Maintenance
7.8 Replacing Fans in the Fan Subassembly During
Operation
Removing the Fans
1. Use a screwdriver to make a quarter turn counter-clockwise and open the two
quick-release locks on the front of the fan subassembly.
Quick-release locks
2. Grasp the base with both hands, press it down slightly and pull it fully out of the
fan subassembly.
3. Release the fan to be replaced by pressing the fan grip away from the housing
with your thumb.
Base
4. Pull out the fan to be replaced.
7-14
Fan 1
LEDs: F 1 = Fan 1
F 2 = Fan 2
F 3 = Fan 3
Fan 2 Fan 3
Base
Automation System S7-400 Hardware and Installation
Reset button
Fan
Fan grip
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