System Sensor B402B - Manual (Page 2)

D450-03-00 2 I56-0374-006R
Once all the detector bases have been wired and mounted, and the loop wir-
ing has been checked, the detector heads may be installed in the bases. The
shorting spring in the base will disengage automatically when the detector
head is removed from the base. DO NOT remove the shorting spring since it
reengages as the detector head is turned into the base, completing the circuit.
tAmperprooF FeAture
CAUTION
Do not use the tamperproof feature if the XR5 removal tool is to be used.
This detector base can be made tamperproof to prevent the removal of the
detector head without the use of a tool. To activate this feature, break off the
tab on the detector base as shown in Figure 3A, then install the detector. To
remove the detector from the base once the tamperproof feature has been ac-
tivated, place a small-bladed screwdriver into the small hole on the side of the
base and push the plastic lever away from the detector head (see Figure 3B).
This will allow the detector to be rotated counterclockwise for removal.
NOTE: Head removal after the tamperproof feature has been activated first
requires removal of the decorative ring.
The tamperproof feature may be defeated by breaking and removing the plas-
tic lever from the base; however, this prevents ever using the feature again.
SNAP ON
DECORATIVE
RING
SCREWS
(NOT SUPPLIED)
DETECTOR
BASE
BOX
(NOT SUPPLIED)
SHORTING
SPRING
Figure 1. mounting BAse to Box:
C0503-00