Model FS24X
™
Fire and Flame Detectors
INSTALLATION GUIDE and OPERATING MANUAL
Fire Sentry Corporation
Document No. 6178-001 - Rev. Q
© Copyright 2011
All Rights Reserved
Page 15
3.6
Fault Conditions
When a
Fault
(Trouble) condition occurs, the
Yellow LED
will illuminate. See Figure 3-6 for the location of
the
Yellow LED
.
The Detector has the following outputs with
a
Fault
condition:
Fault Relay activation
4-20 mA (
sink
) Output
3
2 mA (
Dirty Window Fault
)
0 mA (
All Other Faults
)
4-20 mA (
source
) Output
3
2 mA (
Dirty Window Fault
)
0 mA (
All Other Faults
)
RS-485 FireBus
II
Fault Notification
3
RS-485 ModBus Fault Notification
3
3
Only One Active
Fault
output from this group
Figure 3-6
Detector Module, Front View
Fault
(Trouble) conditions can be caused by:
Under Voltage Input Power (< 18 VDC).
Over Voltage Input Power (> 32 VDC).
Over Temperature (> 85° C or 185° F for the Standard Version).
Over Temperature (> 110° C or 230° F for the Extended Temperature Version).
Under Temperature (< -40° C or -40° F for the Standard Version).
Under Temperature (< -50° C or -58° F for the Extended Temperature Version).
One or more Microprocessor Failures.
One or more Relay Coil Failures.
Communication Fault.
Electronic Self-Test Failure.
Dirty Window Lens (
Yellow
LED flashes, the
Yellow
LED is ON [solid] for all other Faults).
3.7
Maintenance
After the FS24X Detector is installed and commissioned, there is little maintenance required. However, a
complete “end-to-end” test of the entire fire detection system should be performed periodically depending on
the application. Additionally, semi-annual or quarterly testing should be performed, using the correct Fire
Sentry Test Lamp, to ensure the integrity of the entire fire protection system.
In order to ensure the Detector is operating properly at all times, it may be necessary to establish a periodic
cleaning
schedule. Some industrial environments may necessitate more frequent cleaning of the Detector’s
optical surfaces than others.