LOCO PILOT STUDY MATERIAL

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WDG4/WDP4 Locos Recycling procedure in GTO LOCOS Keep Throttle Handle in Idle. Keep the Reverser handle in Neutral. Loco Brakes Applied condition. Keep the isolation switch in isolate position. Switch OFF the Computer Control Breaker. Switch OFF Circuit Breaker TCC1 Computer. Switch OFF Circuit Breaker TCC2 Computer. Switch OFF Circuit Breaker AC GTO 1 PWR Supply. Switch OFF Circuit Breaker AC GTO 2 PWR Supply. Wait for 20-30 seconds. Switch ON Circuit Breaker AC GTO 2 PWR Supply. Switch ON Circuit Breaker AC GTO 1 PWR Supply. Switch ON Circuit Breaker TCC2 Computer. Switch ON Circuit Breaker TCC1 Computer. Switch ON the Computer Control Breaker. Recover the BP by keeping the A9 in FS for 10 sec. Recycling procedure in IGBT LOCO'S Keep Throttle Handle in Idle. Keep the Reverser handle in Neutral. Keep the isolation switch in isolate position. Switch OFF the Computer Control Breaker. Switch OFF TRACTION CONTROL Circuit Breaker. Switch OFF Circuit Br

WDG4/WDP4 Locos Air Brake Self Test Occasions to conduct: This test is to be conducted when Air Brake Failure Message displayed in the LCC or EM2000 display. When it is not possible to recover the penalty brake by placing the Auto brake handle to Full Service for 10 seconds or 60 seconds in Emergency. BC Pressure is not dropping to zero when direct brake handle is released. Before conducting Air Brake Self Test: Stop the train/loco and secure as per the instructions. Recycle the MAB and recover the penalty as per LCC Display. If unable to recover the penalty then only Air brake self-test to be done. Ensure the following to before conducting Air Brake Self Test: MR Pressure should be above 8.0 kg/cm2 and no external leakage. Front truck Brake cylinder COC is in open position. Loco is fully secured to prevent rolling of the loco during the test. (Apply hand brake and place wooden wedges). Loco is isolated from the formation.(Close all BCEQ, MREQ COCs, BP, FP COC)

WDG4/WDP4 Locos OSTA Tripping Indications: During cranking engine will not fire. During running engine will shut down. Message in Display: No start - Mechanical OSTA Tripped, Reset before Start. Action to be Taken by LP: Reset OSTA and crank the loco. Message will go off automatically after engine gets hold. Message in Display in SIEMENS Loco No Aux. gen. output/check all breakers. Action to be Taken by LP: Press EFCO button or recycle computer breaker ad crank the loco. LLOB Tripping Indications: During cranking engine will not CRANK. During running engine will shut down. Message in Display: Engine protection shut down – Low Oil Pressure. Action to be Taken by LP: Ascertain the reason, reset LLOB. Ensure Low Water Button is in normal position then. Re-crank the loco. Low Water Button in EPD Tripping Indications: During cranking engine gets hold and shut down automatically within 180 seconds. During running engine will shut dow

WDG4/WDP4 Locos MR1 Pressure is available and MR safety valve blowing Probable Reasons: If computer breaker is tripped. Compressor is defective during loading. MR1 J Filter COC is closed (sanders, wipers, horns, Auto drain and Radar blow down is also not achievable. Action to be taken by LP: Reset the same. Inform shed and work onwards. Keep MR1 J Filter COC in open. MR1 Pressure is low with PCS open indication Probable Reasons: Compressor is defective in unloading. (MVCC - Trouble). MR1 - Auto blow down valve blowing continuously. Feed pipe leakage. MR Equalizer leakage. Leakage in Air Drier. Sander or horn valves blowing continuously. Action to be taken by LP: Close MR1 J Filter COC and drain MR1 J- Filter and open the MR1 J Filter COC, when MR safety valve starts bowing.. Close to shut off position (manual position –spindle inside). Close additional FP COC. Close both end MR Equalizer COC. Put off Air drier breaker and disconnect electrical c