Troubleshooting
52
SharpEye
TM
IR3 Flame Detector User Guide
8.4
Maintenance Records
It is recommended that maintenance operations performed on a detector
are recorded in a logbook. The record should include the following:
•
Installation date
•
Contractor
•
Serial and tag number
•
Entries for every maintenance operation performed, including the
description of the operation, date, and personnel ID.
If a unit is sent to SPECTREX or a distributor for service, a copy of the
maintenance records should accompany it.
8.5
Troubleshooting
8.5.1
Fault Indication
To identify the fault indication:
1
Check power supply for correct voltage, polarity, and wiring.
2
Check detector window and reflector for cleanliness. If necessary, clean
the window as indicated in
Periodic Maintenance Procedures
on page 51,
and then repeat the test.
3
Disconnect the power supply to the system and check the detector's
internal wiring.
Reconnect the power supply and wait approximately 60 seconds. Repeat
the test. If the 4Hz LED still flashes yellow, the unit requires service.
8.5.2
False Alarm or Warning Indication
To identify the false alarm or warning indication:
1
Disconnect the power supply from the system and check the internal
wiring.
2
Reconnect the power supply and wait approximately 60 seconds. If the
indication remains, the unit requires service.
8.5.3
RS-485 Communications Network
Using the RS-485 network capability of the IR3 detector and control
software, you can connect up to 32 detectors in an addressable system with
only 4 wires (2 for power and 2 for communication). Using repeaters, the
number of detectors can be much larger (32 detectors for each repeater) up
to 247 on the same 4 wires. When using the RS-485 network, you can read
each detector status (FAULT, WARNING, ALARM) and initiate a BIT for each
detector individually.