Make sure that you have the replacement spare part available.
-
Switch off both AC (mains) power switch and battery switch.
Make sure that there is no AC (mains)
power available for the system.
-
Remove the humidity and temperature probe and the background luminance sensor. Remove
their cables and remove their sensor support arms from the mounting frame.
-
Remove the radiation shield and cabling box.
-
Disconnect the measurement unit and obstruction light cables as needed, for example, if
the cables are routed through the mounting frame.
-
Remove the mounting frame from the mast.
-
Remove the interface unit and Termbox from the mounting frame.
-
Mount the interface unit and Termbox on the replacement mounting frame.
-
Follow the installation instructions in FD70 Installation Guide
(M212221EN).
-
Power up the system.
-
Verify operation.