FORTEZA JSC
FORTEZA FMC 24 (50m, 100m, 200m)
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- the absence of foreign objects in the protected sector.
3.2.2.2. Every quarter:
- carry out all monthly works;
- check the cables and cable connections.
3.2.2.3. The grass height is controlled during seasonal works. If the grass height is
over 0,3 m, the grass should be mown down.
3.2.3. If the snow height changes, false alarms can be generated because of the signal
reduction at the Rx input. In this case it is necessary to remove the snow or to change the
height of Tx and Rx antennas.
After the height of the antennas is changed, they should be aligned. The thresholds
should be aligned as described above.
3.3. Safety measures
3.3.1. The current safety standards for the operation with electrical facilities with the
voltage up to 1000 V should be observed during mounting, preventive maintenance and
repair of the sensor.
3.3.2. The sensor’s power supply is 9…30 VDC. That’s why before the sensor
operation it is necessary to study the elements and cables arrangement in the power supply.
3.3.3. Cables should be laid, terminated and connected to the sockets only when the
supply voltage is OFF.
3.3.4. Replace a fuse in the power supply when the power supply is OFF.
3.3.5. It is prohibited to mount and maintain the sensor at thunderstorms.
3.3.6. Installation and maintenance of the sensor must be performed only by people,
who underwent special safety trainings and became acquainted with safety measures.
3.3.7. It is recommended to install a separate switch on the power supply line.
4.
TROUBLESHOOTING GUIDE
List of possible troubles is given in table 4.1.
Table 4.1
Trouble
Possible Cause
Repair
1. Receiver indicator shines
and rarely turns out, the relay
is closed.
The operation signal is in the
upper critical point (290 mV)
of the allowed operation
diapason.
Increasing of distance is
needed between Rx and Tx
or desalignment of Rx and
Tx upwards at a small angle.
2. Receiver indicator briefly
(0.1 seconds) blinks with a
period of 2 seconds, the relay
is closed.
The operation signal is in the
lower critical point (8 mV) of
the allowed diapason.
Change detectors installation
height (85 cm + 5 cm or 85
cm – 5 cm.) or
it is needed to
lower the distance between
Rx and Tx.
