FlexZone Product Guide
Page 87
4
Maintenance
Recommended maintenance
The FlexZone sensor requires minimal maintenance to ensure proper operation. However, setting
up and following a maintenance schedule based on your site-specific requirements can ensure
proper detection performance, prevent nuisance alarms and extend the operational lifetime of the
system. The frequency at which the maintenance should be scheduled depends on your security
requirements and on the installation environment. This section includes the recommended
maintenance activities along with suggested intervals.
1. Perform a visual inspection of the installation (once per month). Check for the following:
•
fence condition - ensure the fence is in good condition and that there are no loose panels,
loose fittings or metal bits that can move with the wind and cause nuisance alarms (a
shake test in which you grip the fence fabric in the middle of a panel and gently shake it
with an increasing motion can help identify any loose pieces)
•
there are no washouts or depressions under the fence
•
vegetation beside and above the fence is cut back and cannot make contact with the
fence
•
there is no loose sensor cable; the sensor cables are held snugly against the fence fabric
and the cable ties are holding the cable securely in place
•
connectors and terminator enclosures are properly mounted according to the installation
instructions
•
there is no corrosion or moisture inside the processor enclosure
2. Physically test the system (once per week).
•
use a screwdriver to simulate a series of cut intrusions and verify that alarms are declared
and accurately located each time
•
climb the fence at several locations and verify that alarms are declared and accurately
located each time
3. Record a UCM sensor response plot (quarterly).
Connect the UCM to the processor and record a sensor response plot while conducting tap
tests of the protected fence. Note the environmental conditions at the time of the recording.
Review the plot to examine the response and the ambient noise level, and compare the plot to
any previously recorded plots. Depending on the weather conditions, the recorded plots
should be quite similar. During inclement weather the noise level will be higher, and during
good weather with very little wind, the noise level should be extremely low. If there is a
significant amount of noise indicated during good weather, examine the cable and cable
connections for possible problems.