Operation 'B' Part - I
ABONRMAL SIGN:
After extinguishing LSCHBA DJ trips (5.6 seconds)
CAUSES:
1. MVSL-1 not working or defective QVSL-1
2. MVSL-2 not working or defective QVSL-2
3. MPH not working or defective QPH
4. Defective QCVAR N/O interlock (in ARNO locos only)
Troubleshooting
a) Stop the train at convenient place.
b) Place HVSL-1 & HVSL-2 on `3' position and HPH & HQCVAR on ‘0’ position.
c) Close DJ, release BLRDJ and wait. If DJ trips normalize the switches HVSL-1, HVSL2, HPH & HQCVAR and wedge Q118 in energized condition, work onwards observing Q118 wedging precautions.
d) If DJ holds, get down from the loco check the working of MVSL-1 & 2 by feeling adequate air flow from VSL1and VSL2 outlet.
e) If there is no air flow from VSL1, place by HVSL-1 HVMT-1, HVSI-1 & on 0 to isolate RSI-1 and work onwards with 50% of maximum permissible load with normal current ratings. Inform TLC.
f) If there is no air flow from VSL2, isolate RSI-2 by keeping HVSL-2, HVMT-2, HVSI-2 and on '0' and work onwards with 50% of maximum permissible load with normal current ratings. Inform TLC.
g) If MVSL-1 and MVSL-2 are working normal, trip DJ, place HPH in '1' position and close DJ and wait. If DJ trips, keep HPH in '0' and normalize other switches. Inform TLC, clear section with starting current of 920 A for 5 min and continuous 500 A duly watching the TFR oil level.
h) If DJ holds, clear the block section with normal current rating duly watching the working of SL blowers. After clearing section inform TLC and find out the actual cause as given below.
i) Open DJ, place HVSL-1 on 1 position, close DJ and wait j) If DJ trips, QVSL-1 is defective. Place HVSL-1 on '3', normalize the other switches and work onwards duly watching the working of VSL-1 blower.
k) If DJ holds, open DJ, place HVSL-2 on 1 position, close DJ and wait
l) If DJ trips, QVSL-2 is defective. Place HVSL-2 on 3, normalize the other switches and work onwards duly watching the working of VSL-2 blower.
m) If DJ holds, QCVAR N/O interlock is defective. Retain HQCVAR in 0 and work onwards duly watching the working of ARNO.
NOTE:
1. If both MVSL-1 and MVSL-2 are not working, contact TLC.
2. If MPH equalizing pipeline is leaking, stop the train, open DJ, take safety measures and try to arrest the leakage with insulation tape or by some other means. If the leakage is stopped, energize the loco and resume traction. Otherwise trip DJ place HPH on ‘0’, ensure the TFR oil level above 15° C, clear the block section with the restricted current and contact TLC for advice.
3. If MPH equalizing pipe line is broken, stop the train, open DJ, take safety measures and crush the copper pipe at both ends with help of cutting-pliers and ensure that there is no oil leakage. Place HPH on ‘0’, ensure the TFR oil level above 15° C, clear the block section with restricted current and contact TLC for advice.
ABONRMAL SIGN:
After extinguishing LSCHBA DJ trips (5.6 seconds)
CAUSES:
1. MVSL-1 not working or defective QVSL-1
2. MVSL-2 not working or defective QVSL-2
3. MPH not working or defective QPH
4. Defective QCVAR N/O interlock (in ARNO locos only)
Troubleshooting
a) Stop the train at convenient place.
b) Place HVSL-1 & HVSL-2 on `3' position and HPH & HQCVAR on ‘0’ position.
c) Close DJ, release BLRDJ and wait. If DJ trips normalize the switches HVSL-1, HVSL2, HPH & HQCVAR and wedge Q118 in energized condition, work onwards observing Q118 wedging precautions.
d) If DJ holds, get down from the loco check the working of MVSL-1 & 2 by feeling adequate air flow from VSL1and VSL2 outlet.
e) If there is no air flow from VSL1, place by HVSL-1 HVMT-1, HVSI-1 & on 0 to isolate RSI-1 and work onwards with 50% of maximum permissible load with normal current ratings. Inform TLC.
f) If there is no air flow from VSL2, isolate RSI-2 by keeping HVSL-2, HVMT-2, HVSI-2 and on '0' and work onwards with 50% of maximum permissible load with normal current ratings. Inform TLC.
g) If MVSL-1 and MVSL-2 are working normal, trip DJ, place HPH in '1' position and close DJ and wait. If DJ trips, keep HPH in '0' and normalize other switches. Inform TLC, clear section with starting current of 920 A for 5 min and continuous 500 A duly watching the TFR oil level.
h) If DJ holds, clear the block section with normal current rating duly watching the working of SL blowers. After clearing section inform TLC and find out the actual cause as given below.
i) Open DJ, place HVSL-1 on 1 position, close DJ and wait j) If DJ trips, QVSL-1 is defective. Place HVSL-1 on '3', normalize the other switches and work onwards duly watching the working of VSL-1 blower.
k) If DJ holds, open DJ, place HVSL-2 on 1 position, close DJ and wait
l) If DJ trips, QVSL-2 is defective. Place HVSL-2 on 3, normalize the other switches and work onwards duly watching the working of VSL-2 blower.
m) If DJ holds, QCVAR N/O interlock is defective. Retain HQCVAR in 0 and work onwards duly watching the working of ARNO.
NOTE:
1. If both MVSL-1 and MVSL-2 are not working, contact TLC.
2. If MPH equalizing pipeline is leaking, stop the train, open DJ, take safety measures and try to arrest the leakage with insulation tape or by some other means. If the leakage is stopped, energize the loco and resume traction. Otherwise trip DJ place HPH on ‘0’, ensure the TFR oil level above 15° C, clear the block section with the restricted current and contact TLC for advice.
3. If MPH equalizing pipe line is broken, stop the train, open DJ, take safety measures and crush the copper pipe at both ends with help of cutting-pliers and ensure that there is no oil leakage. Place HPH on ‘0’, ensure the TFR oil level above 15° C, clear the block section with restricted current and contact TLC for advice.
