User manual
Maintenance 
34  HLX-40 User Manual 
10.  Maintenance 
10.1  Dismounting the Control Panel 
To release the panel from the mounted back-plate: 
1.  Unlock the locking hooks on the top of the back plate by lifting them up 
and out of the recesses on top of the panel. 
2.  Pull the top of the panel away from the wall to disconnect the connector 
from the back-plate. 
3.  Remove the panel from the lower posts of the back-plate. 
10.2  Replacing the Backup Battery 
To replace the backup battery: 
1.  Dismount the panel. 
2.  Remove the battery cover. 
3.  Replace the battery. 
4.  Replace the cover. 
Figure 6: Replacing the Backup Battery 










