EM 74 23E Locomotive Assessment

EM 74 23E Locomotive Assessment

CCB II Brake System

• The CCB II brake system provides Penalty brake, Independent brake, Automatic brake, and Emergency brake applications.

Locomotive Startup

• When the locomotive starts, the AC/DC system change must initially be set to DC system operation.

Depot Supply and Safety Measures

• During Depot supply operation, a traction cut-off is applied as a safety measure to prohibit the locomotive from starting.
• There are two track magnet detectors, one on each end of the locomotive.

REMB Abbreviation

• REMB stands for Rear Emergency Master Button.

Parking Brake

• The parking brake can be manually operated via two pushbuttons located on the Bi-Stable Valve (P03) in the Machine Room zone 2.
• There are six Parking Brake units installed on the locomotive.
• Pressing Pushbutton (Item 1, Figure 5) will release the applied Parking Brakes, and pressing Pushbutton (3) will apply the released Parking Brakes.

Fire Alarm and Warning Systems

• When a fire is detected, the TCMS will activate visual and auditory alarm warnings on the driver's display, in the occupied cab, and in the toilet cubicle of the affected locomotive.
• The alarm is transmitted to the leading locomotive via WTB and as a "General Fault Alarm" via the Train Line.

Equipment Location

• The air conditioner compartment is located on the B-side of the locomotive.
• The transformer air outlets are located on the B-side of the locomotive.
• The cooling tower 2 air inlet is located on the B-side of the locomotive.
• The battery cover is located on the B-side of the locomotive.

Parking Brake and Pressure Indication

• The emergency release of the park brake can be reset through applying compressed air to the parking brake cylinders.
• The parking brake status is shown on two indicators in the cab of the locomotives.
• The Park Brake is activated by two pushbuttons on the left control panel located on the Train Driver's desk.

Automatic Brake Handle

• A locking pin is used to lock the Automatic Brake handle in the neutral position when the locomotive is a trailing locomotive in a consist.
• The Automatic Brake handle has switching positions: OVR, PARK, NEUTRAL, RELEASE, and RUN.

Fire Extinguisher

• A 7kg portable carbon dioxide fire extinguisher is equipped within the machinery room.
• The fire extinguisher is fixed to the machinery room wall with a harness and the harness is secured by two pins.

Interlocking System

• The yellow key is used to release the red key after the earthing switch was moved to "earthed".
• The interlocking system is used to lock and unlock doors and lids.

HVAC System

• The HVAC unit is side-mounted and located behind the rear wall of the driver's cab.
• The foot well heaters will be able to operate when the HVAC is in cooling mode.
• The control panel of the HVAC system LED's will switch off after 45 seconds.

Derailment Protection Beams

• Derailment protection beams are intended to avoid massive damages to the bogie mounted equipment following a derailment.

Air Supply and Sand

• Air supply to the sand is supplied by D01.

Equipment Location on the Roof

• Traction motor blower air inlets are located on the roof of the locomotive.
• Headlights are located on the roof of the locomotive.
• Antennas are located on the roof of the locomotive.
• Brake resistors air outlet is located on the roof of the locomotive.

Assessment questions about the EM 74 23E Locomotive, covering topics such as brake systems and AC/DC operations.