Chapter 9 Maintenance
Mini-Switch LB 471
9.4.5 Dismantling the GM Detector
The following parts of the GM detector can be replaced:
Counter tube
detector electronics
1
Take off cover on connection box and disconnect cables as de-
scribed on page 75.
2
Unscrew 6 Allen screws (size 4).
3
Carefully pull electronic base
with electronics
and coun-
ter tube
out of the detector case
.
Electronics
Counter tube
Detector case
4
Now you can do a visual inspection of electronics and counter
tube. Both parts can be replaced separately, if necessary. The
counter tube is fixed to the board by two cable ties and a sili-
con sealing compound.
Dismantling the
GM detector
Figure 48:
Detector
connection box
Figure 49:
GM detector
dismantled
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