QOA trips and unable to reset Action to be taken
a) Check the auxiliary power circuit equipment - all EM contactors, line voltmeters, cab 2 switch panel, Q30, cab heaters cab AC, Notch repeater, C118, R118, ARNO, all auxiliary motors, a0, a1 HVSI-1, HVSI- 2, CHBA,TFVT, for any smoke, burning smell, fire, high temperature or any abnormality. If anything found abnormal, try to isolate that equipment and resume traction accordingly.
b) If the target does not reset, check all EM contactors, if any EM contactor is in welded condition separate it, reset the relay and If QOA reset, isolate the particular auxiliary motor. c) If all EM contactors are normal, switch off BLRA in both cabs, remove CCRA1&2, CCVT & CCSPM and isolate cab AC if provided and try to reset. If successful resume traction.
d) If unsuccessful place HPH, HVSL-1, HVSL-2, HVSI-1, HVSI-2 and HCHBA in 0 and try to reset the relay target.
e) If QOA is reset, normalize switches one by one and If QOA trips after normalizing any switch isolate it and normalize other switches and resume traction accordingly.
f) If QOA does not reset, normalize all the switches, place HQOA on 0 position and resume traction duly observing the instructions.
1. If QOA not resetting even after placing HQOA on 0 place HOBA also in OFF position and reset.
2. If any independent starting auxiliary motor is burnt, place concerned isolating switch on 0 and ensure its contactor opened fully and inform TLC.
Instructions to be followed after keeping HQOA in '0' position
1. Depute ALP for 5 minutes in the corridor while closing DJ and starting the auxiliaries to watch for any smoke, burning smell, fire or any abnormality in the auxiliary power circuit equipment.
2. Loco pilot to watch for any abnormality in EM contactors, switchboard, driving desk if he is driving from cab2.
3. Report the matter to TLC and make an entry in the loco logbook.
4. If QOA drops even after placing HQOA in ‘0’, Place HOBA also in OFF position, if unsuccessful, contact TLC for further instructions.
a) Check the auxiliary power circuit equipment - all EM contactors, line voltmeters, cab 2 switch panel, Q30, cab heaters cab AC, Notch repeater, C118, R118, ARNO, all auxiliary motors, a0, a1 HVSI-1, HVSI- 2, CHBA,TFVT, for any smoke, burning smell, fire, high temperature or any abnormality. If anything found abnormal, try to isolate that equipment and resume traction accordingly.
b) If the target does not reset, check all EM contactors, if any EM contactor is in welded condition separate it, reset the relay and If QOA reset, isolate the particular auxiliary motor. c) If all EM contactors are normal, switch off BLRA in both cabs, remove CCRA1&2, CCVT & CCSPM and isolate cab AC if provided and try to reset. If successful resume traction.
d) If unsuccessful place HPH, HVSL-1, HVSL-2, HVSI-1, HVSI-2 and HCHBA in 0 and try to reset the relay target.
e) If QOA is reset, normalize switches one by one and If QOA trips after normalizing any switch isolate it and normalize other switches and resume traction accordingly.
f) If QOA does not reset, normalize all the switches, place HQOA on 0 position and resume traction duly observing the instructions.
1. If QOA not resetting even after placing HQOA on 0 place HOBA also in OFF position and reset.
2. If any independent starting auxiliary motor is burnt, place concerned isolating switch on 0 and ensure its contactor opened fully and inform TLC.
Instructions to be followed after keeping HQOA in '0' position
1. Depute ALP for 5 minutes in the corridor while closing DJ and starting the auxiliaries to watch for any smoke, burning smell, fire or any abnormality in the auxiliary power circuit equipment.
2. Loco pilot to watch for any abnormality in EM contactors, switchboard, driving desk if he is driving from cab2.
3. Report the matter to TLC and make an entry in the loco logbook.
4. If QOA drops even after placing HQOA in ‘0’, Place HOBA also in OFF position, if unsuccessful, contact TLC for further instructions.
