User's Guide ______________________________________________________________________
80 __________________________________________________________________ M210482EN-B
Repair and service must be done according to the instructions in
Chapter 7, Troubleshooting, on page 83 and Chapter 8, Repair, on
page 91.
Window Cleaning
Data messages include a warning that informs when the window is
contaminated. After the system has detected contamination on the
window, it will start the blower, which is designed to remove light
contaminants and dry off rain drops. If the contamination cannot be
removed, CL31 will issue a
Window Contaminated
warning which
indicates that the window must be cleaned.
To clean the window, proceed as follows:
1.
First flush the window with clean water to remove coarse grains.
Remember to keep the enclosure door closed.
2.
Then clean the window with a soft, lint-free cloth moistened
with a mild detergent. Be careful not to scratch the window
surface.
While cleaning the window, you can also check the operation of the
window blower. Unless it is already running, the blower should start
when you block the laser beam with the cleaning cloth for some 5
seconds or more. This will verify that the blower is functional. If there
are no low clouds, precipitation, or fog present, the blower should stop
after the window is cleaned. In case of a malfunction, the window
blower has to be replaced.
Calibration
After 5 years of operation, calibrate the window contamination
measurement.
Also if the CL31 system starts issuing
Window Contamination
warnings frequently without a real reason, this may indicate that the
window is worn out or the window contamination measurement has
drifted. In that case, the window contamination measurement can be
calibrated to ensure proper functioning.
