Polon-Alfa 4000, Operation And Maintenance Documentation

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86 ID-E316-001GB
Fig. 9.9 Monitoring line circuit to perform EXTERNAL ALARM OUTPUT function
9.3.9 fK9 NON-ELECTRICAL BLOCKADE monitoring function
The function may be executed using monitoring lines no. 1 ÷ 11. Monitoring line no. 9 is recommended
for monitoring the non-electrical blockade position. Typical connections are shown in Fig. 9.10. If a K
contact is closed, the active blocking position is indicated. A LED in the monitoring line circuit indicates
the blockade position and circuit operation.
Fig. 9.10 Monitoring line circuit to perform NON-ELECTRICAL BLOCKADE function
9.3.10 fK10 FIRE EXTINGUISHING AGENT OUTFLOW END function
The control panel makes it possible to cancel the alarming mode and the initiated fire extinguishing
procedure in any operation mode. However, in some cases, unintentional cancellation of an alarming
mode may have detrimental impact on fire extinguishing procedure effectiveness. It may be prevented
by programming the procedure of cancelling function disablement for a set time of 0.30 min. from the
moment of initiating a fire extinguishing procedure. After the fire extinguishing agent outflow is
finished, the cancelling function disablement is not advisable. Using the outflow end signal through a
monitoring line makes it possible to optimally unblock the cancelling function.
The function may be fulfilled using monitoring lines no. 1 ÷ 11. Line no. 10 is recommended for
monitoring the end of fire extinguishing agent outflow. When a K contact is closed, it is interpreted as
the end of the fire extinguishing agent outflow. In case the cancelling function is disabled due to the set
time, a signal from the line results in its resetting to zero and re-enablement of the alarming mode
cancelling function. The fact that a K contact is in the detection position is of no significance here.