Vaisala AWS330 - Manual (Page 99)

Chapter 4 _______________________________________________________________ Installation
VAISALA _______________________________________________________________________ 97
Powering Up System
WARNING Electrical installations must be carried out by licensed experts as
governed by local and state authorities, legislation, and regulations.
WARNING Always consult local authorities on decisions that relate to aviation
safety, grounding, lightning protection, safe installation, and power
supply. It is the responsibility of the customer to see that local
regulations, laws, and authorities have been properly observed.
WARNING Failure to provide proper grounding may result in personnel injury or
death from electrical shock and may severely damage equipment.
When the station is ready for powering, the backup batteries and the solar
panel are connected first and then the AC (mains) power.
For battery connection, make sure the backup batteries are properly
fastened into place before connecting the battery cables; see section
Mounting Backup Batteries on page 99.