Ceilometer CT25K
User’s Guide CT25K-U059en-2.1
118
NOTE
If the Ceilometer is installed outdoors and a replacement
unit is not immediately available, it is advisable either to
bring the unit indoors or cover the exposed opening with
tape to protect the interior against water, insects. etc.
1. If the Ceilometer is mounted on a pedestal, loosen the two attachment
screws and tilt the Ceilometer to a horizontal position. If the Ceilometer is
already demounted from the pedestal and brought indoors, place the unit
on a table with the door upwards.
2. Remove the protective cap of the External Connector J4 (Maintenance
Line), if the cap is attached. (All cables must be disconnected from the
External Connectors J1-J4).
3. There are 6 screws at the bottom of the CT25K that are situated around
the rectangular opening of external connectors J1...J4 (See Figure 8-8).
Loosen these screws so that they come out approx. 1 cm (do not remove
them completely), releasing the flange of the CTP241.
4. Turn the ceilometer to a vertical position again.
5. Detach the Internal Heater Cable by pressing the right and left clips of the
mating connector at J5 on the CTP241.
6. Disconnect the AC Power Interface Connector P6 from the Board Frame
DMF51 (J15). Ref. Figure 8-1.
7. Disconnect the plug-in Connectors P7 and P8 from the DMC50 Processor
Board and modem, if installed.
8. Open and remove the screw and spacer that connects the CTP241 to the
battery holder, see Figure 8-8.
9. Lift the left front corner of the CTP241 approx. 1 cm and pull it out.
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