Network Router User Manual

Maintenance
7-13
Automation System S7-400 Hardware and Installation
A5E00850741-01
7.7 Replacing the Fuse of the Fan Subassembly
Fuse Type
The fuse of the fan subassembly is a standard 5 x 20 mm cartridge fuse to DIN and
not a spare part.
Use the following fuse:
• 160 mA slow blow if the v oltage selector switch is set to 230 V
• 250 mA slow blow if the v oltage selector switch is set to 120 V
Replacing the Fuse
To replace the fuse of the module, follow the steps outlined below:
1. Disconnect the power cable of the fan subassembly from the supply.
2. Use a screwdriver to unscrew the fuse cap.
Fuse cap
Voltage selector switch
3. Remove the blown fuse from the fuse cap.
4. Insert the new fuse in the fuse c ap and screw the c ap into the fan subassembly.
5. Connect the power cable of the fan subassembly to the supply.