Safety guidelines
2.1 Safety notes
Working on the device or on components connected to it
Electric shock hazard
Can cause death or serious injury
• Voltages of more than 60 V can occur in the control cabinet. Suitable safety precautions
• Before working on the heating control system or the connected components, ensure the
Fuse replacement
NOTICE
Use only the prescribed fuse types. If you operate a heating controller with unapproved
fuses, the device could be destroyed.
Repairs
No user-serviceable parts
Can cause death or serious injury
Incorrectly performed repairs can result in substantial damage to equipment or endanger
the user. Return the device to Siemens for repair.
12
WARNING
to prevent contact must therefore be taken before and during commissioning and
maintenance work.
system is disconnected.
WARNING
SIPLUS HCS4300 PROFINET/PROFIBUS DP
Operating Instructions, 10/2019, A5E35452705A/005