93-340-74 Issue 5 CirrusPro Locator Operating Manual Page 7 of 12
6. Slowly sample the half of the area, which
had a higher reactivity on the initial
sampling, then divide it in half again. If
percentage level is above 90% at fire level
4, stop, press the “Decrease Sensitivity”
button to lower the sensitivity and then
continue.
NOTE:
It may be necessary to decrease the
sensitivity more than one setting to
decrease the levels enough to search further
for the fire threat.
7. Slowly continue with this divide and sample
approach until you isolate the area down to
a single room.
8. When sampling in smaller areas, there will
be a higher concentration of combustion.
You may need to greatly decrease the
sensitivity, perhaps several settings, before
the percentage level and audible tones are
reset.
9. Once you have determined in which room
the fire threat is occurring, use the probe to
sample above drop ceilings, in equipment
cabinets, return air ducts, and other hard to
reach areas. All equipment in the area
must be thoroughly examined including
outlets, power strips, light fixtures and
switches.
NOTE:
Keep probe away from machinery or
equipment with moving parts or high
voltage.
