Chapter 6 _______________________________________________________________ Maintenance
VAISALA _______________________________________________________________________ 169
CHAPTER 6
MAINTENANCE
Cleaning FSM102 Windows
The cleaning of windows and hoods is the only periodic maintenance
task required. The FS11P sensor can compensate for a reasonable amount
of window contamination, but when a certain limit is exceeded, cleaning
is required.
The windows and hoods must be cleaned at least every six months or
more often, depending on the conditions (for example, if there are roads
nearby). In an airport environment the cleaning should be done every
three months. The cleaning should be done immediately if the warning
WINDOW CONTAMINATED has been received in the status message.
The cleaning is done as follows:
1. Wipe the windows with a soft, lint-free cloth and isopropyl alcohol.
Be careful not to scratch the window surfaces. The windows should
dry up rapidly to indicate that the window heating is functioning.
Use a flashlight to look into the hoods to verify visually that the
window is clean.
2. Check that the assembly of the hoods and optics is free of water
condensation and ice or snow deposits.
3. Wipe the dust from the inner and outer surfaces of the hoods.
NOTE
Do not use any sharp tools to remove ice or snow from the hoods,
especially from their heated surfaces. This can easily break the heating
foil
s. Do not try to insert any tools under the foils, because the foil glue
may then fail to hold the foil on the hood surface. It is essential that the
foils are firmly attached to the hood surface, otherwise the heat transfer
from the foil piece to the hood
is impaired resulting in a burned foil.
To Next Page
Loading...
