WDG4D/WDP4D Locos Dual Cab Changing Procedure

WDG4D/WDP4D Locos

Dual Cab Changing Procedure

Preparation:

  1. Stop and secure the Loco.
  2. Apply Direct brake to Full (Br.Cyl.Pr.- 5.2 kg/cm2).
  3. Bring the Reverser Handle to Centre.
  4. Keep Isolation switch in Run Position.

Preparation for Working Cab to be made as Non Working:

  1. Move Auto Brake to FS.
  2. Wait till BP Exhaust sound stops.
  3. Move LT Switch from Lead to Trail (Ensure ER Pressure drops to zero).
  4. Release Direct Brake (without operating Bail OFF ring).
  5. Switch off ERS, GF, Control/FP Slider Switches and Dyn. control CB.
  6. Switch off GF CB in the Breaker panel.
  7. Switch off BL Key and remove the BL Key (in M edha Locos, Non Removable in Siemens Locos).
  8. Remove the Reverser Handle.

Preparation for Non-Working cab to be made as Working:

  1. Move LT Switch from Trail to Lead (ER Pr. builds to 3.7 kg/cm2).
  2. Move Direct Brake Handle to Full (BC Pr. builds to 5.2 kg/cm2).
  3. Move Auto Brake from FS to Run (ER and BP Pr. builds to 5.2 kg/cm2).
  4. In Medha Locos, insert BL Key and turn it to ON.
  5. In Siemens Loco, turn BL Key ON.
  6. Insert Reverser Handle.
  7. Switch ON GF CB in the Breaker panel.
  8. Switch 'ON' ERS, GF, Control/FP Slider switches and Dyn Control CB.
Note:
  1. In Siemens Locos Switch Off only GF slider switch on Drivers desk and GF CB in breakers panel/ECC4 in Non-Working Cab and Switch ON GF slider switch and GF CB in the working Cab.
  2. Classification Light Switch: Leading CAB: ON Trailing CAB: OFF.
  3. CAB FANS & Light Switch: Leading CAB: ON Trailing CAB: OFF.

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