USER'S GUIDE____________________________________________________________________
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0910-115
Figure 9 Ceilometer CL31 Bird Deterrent
Proceed as follows:
1. Place the sideplates on both sides of the ceilometer top cover and
attach them with two washers and screws.
2. Slide a fluorocarbon line back and forth through the designated
holes on the side plates, starting from the front of the ceilometer
and continuing until the ends of the line meet on the back side of
the ceilometer. See Figure 9.
3. Tie the line ends together with a blood knot so that the line is left
slightly loose.
4. The optional bird perches can now be attached to the side plates.
For detailed drawings of the bird deterrent installation and the blood
knot, see Appendix A, Bird Deterrent Installation.