User's Guide ______________________________________________________________________
108 _________________________________________________________________ M210482EN-B
6.
To get to the internal heater, you also need to remove the
Ceilometer Optics assembly CLO311. To do this, detach all the
cables and remove the optics holder by loosening the four Allen
screws on its front cover. Then detach the internal heater
connector and holding the cable aside gently pull out the optics
tube with its upper end first.
7.
To remove the internal heater, use an Allen key or a short
screwdriver and loosen the three screws attaching the heater to
the left wall of the measurement unit enclosure. Then slide out
the internal heater.
8.
Slide the new internal heater to its place and hold it there while
tightening the three screws.
9.
Slide the optics tube to its place with the bottom end first
making sure no cables get stuck between the optics tube and
other ceilometer components.
10.
Snap the internal heater connector to its place.
11.
Place the optics holder to its place setting the internal heater
cables to their place on the upper left corner of the optics holder.
Tighten the three screws of the optics holder.
12.
Reattach the metal plate protecting the internal heater by
tightening its two screws.
13.
Reconnect the battery and data cables to the CLE311 board and
attach all the detached cables.
14.
Reattach the measurement unit by placing it inside the shield,
reconnecting the blower cable to connector J1, and tightening
the three attachment screws.
15.
Connect the CT3839 power cable.
16.
Switch the power on with all three switches. Wait until the
Laser on
LED starts blinking at 2-second intervals. Ensure that
all six diagnostic LEDs are lit. Refer to Figure 19 on page 99.
The ceilometer unit should now return to normal operation. Verify
that the unit is working properly and that there are no other failures
with the system. If other failures exist, separate troubleshooting may
be necessary.
