Chapter 6 ______________________________________________________________Maintenance 
 
VAISALA______________________________________________________________________ 197 
3.  For QSA224DC (data line) and PT5-HF-12DC-ST (Ethernet) surge 
protectors, do the following:  
-  Unscrew the middle side installation plate and flip it down. 
-  Disconnect the wires from the faulty surge protector and remove 
the surge. 
-  Install a new surge protector in the reverse order. 
 
  1012-204 
Figure 116  Removing Data Line and Ethernet Surge 
Protectors