Fuse Replacement - Siemens SIPLUS HCS Operating Instructions Manual

Service and maintenance

12.3 Fuse replacement

12.3 Fuse replacement
Safety information
Voltage hazards
May cause death or serious injury
• Before changing a fuse, you must isolate the load circuit from the supply.
• Before working on the heating control system or the connected components, ensure the
NOTICE
Use only the prescribed fuse types (see section Ordering data (Page 148)). If you operate
the device with unapproved fuses, the device could be destroyed.
Removing the POM
To replace the channel fuses, the Power Output Module (POM) on which the fuse to be
replaced is located must be removed from the rack.
NOTICE
ESD-sensitive components
Before you remove the board, please note the ESD information in Section ESD guidelines
(Page 149).
1. Proceed as described in Section Replacing the Power Output Module (POM) (Page 120).
2. Place the board on an ESD-compatible surface
116
WARNING
system is disconnected.
Operating Instructions, 11/2015, A5E35066204A/RS-AA/002
SIPLUS HCS4200