Hi All,
I hope you all are feeling well. I am writing to seek advice and help in troubleshooting of false fire alerts in Camp Residential Fire Alarm System (Tyco : Minerva -4000) located in gas field.
Its Minerva 4000 system having following specs:
Loop A: 132 Devices
Loop B: 132 Devices
Loop C: 177 Devices
Loop D: 120 Devices.
Problem:
Random false fire alerts appeared and cleared after 5 sec from different zones in evening on Loop D. It happens only in evening up to early morning (Timing 19:00 to 6:00) rest all time system work normally.
Note: (Nothing from Loop A, B, C as all working properly for 24/7)
Event Log Details:
Different SDs from Loop D INPUT ON for 5 or 10 sec then INPUT OFF (19:00 to 6:00 only)
Sometimes Auto Function Test Failed for random Smoke detectors.
Fire Alerts coming from random smoke detectors from different zones. (Not specific Area but in Loop D)
Remedial Actions:
Following remedial action performed but still problem exists:
1- Replaced Loop D card with new one.
2- Interchanged power supplies.
3- Replaced Interface card with new one.
4- Isolated individual JBs (1~8) and powered up rest all system to check faulty device.
5- Cleaned dirtiness of all devices Max threshold 25%.
6- Isolated complete Loop D from card and transfer its 30% load to Loop A. Assigned IPs from 133 onwards , configured and connected Loop D devices into Loop A. Result: False Fire alert started in Loop A at same timing from different A loop locations.
7- Performed Megger test to check insulation all found Ok.
Q: What do we mean by Input ON and Input OFF ?
Q: What is Force Day Mode?
Any suggestion would be highly appreciated
Contact Details:
Whats app:
+92-3013116328
I hope you all are feeling well. I am writing to seek advice and help in troubleshooting of false fire alerts in Camp Residential Fire Alarm System (Tyco : Minerva -4000) located in gas field.
Its Minerva 4000 system having following specs:
Loop A: 132 Devices
Loop B: 132 Devices
Loop C: 177 Devices
Loop D: 120 Devices.
Problem:
Random false fire alerts appeared and cleared after 5 sec from different zones in evening on Loop D. It happens only in evening up to early morning (Timing 19:00 to 6:00) rest all time system work normally.
Note: (Nothing from Loop A, B, C as all working properly for 24/7)
Event Log Details:
Different SDs from Loop D INPUT ON for 5 or 10 sec then INPUT OFF (19:00 to 6:00 only)
Sometimes Auto Function Test Failed for random Smoke detectors.
Fire Alerts coming from random smoke detectors from different zones. (Not specific Area but in Loop D)
Remedial Actions:
Following remedial action performed but still problem exists:
1- Replaced Loop D card with new one.
2- Interchanged power supplies.
3- Replaced Interface card with new one.
4- Isolated individual JBs (1~8) and powered up rest all system to check faulty device.
5- Cleaned dirtiness of all devices Max threshold 25%.
6- Isolated complete Loop D from card and transfer its 30% load to Loop A. Assigned IPs from 133 onwards , configured and connected Loop D devices into Loop A. Result: False Fire alert started in Loop A at same timing from different A loop locations.
7- Performed Megger test to check insulation all found Ok.
Q: What do we mean by Input ON and Input OFF ?
Q: What is Force Day Mode?
Any suggestion would be highly appreciated
Contact Details:
Whats app:
+92-3013116328