Chapter 6 _______________________________________________________________ Maintenance
VAISALA _______________________________________________________________________ 189
Replacing FS11P Modules
This section describes in detail how to remove and replace the Visibility
Sensor Controller FSC102, transmitter module FST102, receiver module
FSR102 as well as the optical units PWT11 Transmitter and PWC12
Controller/Receiver. Removing the units comes into question, when there
is reason to suspect that malfunction of FS11P is caused by faults in the
optical units or the rain detector.
CAUTION
The servicing of the equipment must be performed by qualified
personnel only.
CAUTION
AC (mains) power switch and the optional battery backup switch
must always be turned off before attempting any service actions
described in this section.
NOTE
When replacing any assembly, do not let water or moisture enter the
unit.
NOTE
er replacing the optical units PWT11 Transmitter and PWC12
/Receiver you need factory calibration. (See section PWD32
Calibration Check Procedure
on page 184).
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