Maintaining and servicing your device   
7.4 Removing and installing hardware 
  SIMATIC IPC677E 
92  Operating Instructions, 04/2019, A5E45117996-AA 
7.4  Removing and installing hardware 
7.4.1  Replacing device fans 
Requirement 
●  The device is disconnected from the mains and all connecting cables have been 
removed. 
●  The device is open, see important information regarding this under Opening the Device 
(Page 71). 
●  An original spare part, that is a fan of the same type, see information under Accessories: 
Hardware (Page 22). 
Procedure - Removal 
1.  Remove the two screws ① and remove the air guide pulling it up vertically. 
 
2.  Loosen the plastic rivets.