Fault No: F0103P1 (Low Pressure Panto/Faulty Panto)

Introduction (Fault No: F0103P1)

Fault No: F0103P1 appears when the “Auxiliary Reservoir Pressure” less then the required level of 5.2kg/cm2. When this occurs, the Driver Dispay Unit (DDU) will show one of the following messages, “Low Pressure Panto/Faulty Panto – check Isolating Cock, check Auxiliary Reservoir Pressure.” This fault prevents the “Pantograph” from rising.

Action to be taken by Loco Pilot

• “Acknowledge fault” by pressing “BPFA” button.

• Ensure ” IG-38 Blue key” is
  • “Horizontal” position in “E70 Brake Locomotives” (Pn. Panel),
  • “Vertical” position in “KNORR-CCB2 brake locomotives”.

• Check that “auxiliary compressor” is working or not. Check MCB 48.1 (SB-2) of MCPA.

• If not working, “gently tap pressure switch No. -26” on pneumatic panel.
• Located (“5^th from left” on pneumatic panel in “E70” and labeled “PANS-PS” in CCB2)

• Ensure “Aux. Reservoir pressure more than 5.2kg/cm²“, using guage provided on pneumatic panel,
  • check and confirm the “drain cock is closed” ( Handle parallel to pipe).

• Check position of “Panto isolating and VCB cocks” on Pn. Panel.
  • Operate them 2-3 times,
  • Ensures that these are in “horizontal position”.

• Try to raise pantograph,
• If not successful, try to raise other pantograph by panto selector switch (85) on pneumatic panel.

Monitor pressure in Pan Circuit:

Pressure Controlled by “Pressure Switches 130.4/1 (Pan-1) & 130.4/2 (Pan-2).

• After giving panto raising cammond,
  • if pressure switch not picked up within “35 seconds” then VCB will be disable.
  • If already closed, VCB will open after “2 second delay”.
• Tap very gently above pressure switch (130.4/1 & 130.4/2).
• Marked “9/1 & 9/2″ provided on top of the “E70” panel,
• and labeled “PAN1- PS & PAN2- PS” in CCB2 panel.
  • Raise panto and close VCB.

• If not successful,
  • try changing the cab,
  • Use alternate Panto by “changing panto selector switch No. 85” on pneumatic panel.
• If still uresolved:
• The switch OFF and ON the MCE once again.

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