User`s guide

User's Guide ______________________________________________________________________
104 _________________________________________________________________ M210455EN-B
Obstruction Light
If the obstruction light gets dirty, clean it with water and mild soap
only. If the obstruction light fails, replace the whole unit.
Antenna
Antennas require a minimum amount of maintenance. Field repairs are
accomplished by changing the complete antenna.
Temperature and Relative Humidity Probe
QMH101M
Calibration and maintenance of the air temperature and relative
humidity probe should be performed at regular intervals, depending on
the conditions of use and desired accuracy. The validity of the
readings should be checked annually.
Replacing QMH101M Probe
To replace the QMH101M probe with a calibrated probe, perform the
following steps:
1. Disconnect the Temp/Humidity cable (red-coded) from the
TACMET MAWS.
2. Remove the sensor from the radiation shield by pulling gently.
3. After the sensor is detached from the radiation shield, pull the
probe head out of the handle (see Figure 54 on page 105).