Clause 806d(xvi) states: "A list of equipment changed with their serial nos. will also be handed over along with the coach."

Clause 805b(xiii) specifies: "The duration for pre cooling of the coach should be between 3 to 4 hrs."

Clause 805b(xiii) and 806d(xiii) both mention providing compensating loads for worst ambient conditions and full occupancy to test cooling capacity.

Clause 806d(xiii) specifies: "Fresh air dampers regulator permanently locked, with paint mark after setting the required fresh air on both sides."

Clause 806d(xiii) clearly states: "Compartment fans are 'OFF'" as a test condition.

Clause 806d(xiii) specifies: "Condition for airflow tests are: Voltage set at 130 volts ± 1 volts."

Clause 806d(xiii) states: "For ideal condition, the exhaust air should be equal to fresh air or it can be less by 10% but for no reason it should be not more than fresh air."

Clause 806d(xiii) specifies 0.35 m³/min for non-smoking coaches and 0.7 m³/min for smoking coaches.

Clause 806d(v) specifies: "HV test shall be performed with 2.5 KV for 1 minute. IR shall be min. 10 M ohm."

Clause 806d(iv) explains: "The deterioration might show in the form of dry cakes/flakes in sodium base grease while in the lithium base grease starts thinning and its oil content separates out."

Clause 806d(ii) explicitly states: "It is advised that CTC flushing should not be done with compressor of AC coach in circuit but a separate compressor should be used."

Clause 806d(ii) specifies: "Clean the system using carbon tetrachloride (CTC) with the help of circulating pump."

Clause 805b(xv) specifies: "Conduct vacuum test. (For 12 hrs.)" for dehydration of the refrigeration system.

Clause 805b(xv) and 806d(ii) mention vacuum test for dehydration of the refrigeration system to remove moisture.

Clause 805b(vi) states: "This should be examined for wear and if necessary, replaced by a new pin lightly covered with vaseline."

Clause 805b(v) specifies this method: run at approximately 25% of rated voltage in both directions; if brushes are at neutral axis, speed will be same in both directions.

Clause 805b(v) describes connecting a millivoltmeter across brushes of opposite polarity and rocking the brush gear to find the position where the kick is zero or minimum.

Clause 805b(v) specifically states: "In case of evaporator motor 100% bearings shall be changed," while compressor and condenser motors are replaced on condition basis.

Clause 805b(iii) and (iv) mention covering flanges so that water may not enter into the cooling coil during immersion and washing.

Clause 805b(iii) and (iv) both specify: "Immerse the heat exchanger in water tank for 24 hours."

Clause 805b(iii) and (iv) specify washing coils with compressed water jet at 12 kg/cm² pressure.

Clause 805b(ii) specifies: "The compressor shall be charged with dry air at 21 kg/cm² pressure and submerged in water."

Clause 805b(ii) states the time should not be more than 73 seconds for these compressors, compared to 53 seconds for ACCEL.

Clause 805b(ii) specifies: "The compressor shall be run with air at nominal speed of 1500 rev/min."

Clause 805b(ii) states: "Maximum temperature rise at shaft seal shall not be more than 45°C."

Clause 805b(i) lists: Piston rings, scraper ring, suction and discharge valve, shaft seal assembly/O rings, gasket packing, half section bearing, self locking nuts, and lubricating oil as 100% replacement items.

Clause 805b(i) specifies that for Carrier compressors, oil pressure developed should be 3.2 to 3.9 kg/cm², while ACCEL compressors require 4.2 to 4.9 kg/cm².

Clause 803c(i) states: "When MCCB is switched ON and tripping and fuse blowing instantaneously, it is due to IGBT problems."

Clause 803b(xii) and 803c(i) specify cleaning with dry compressor at maximum 1 bar pressure.

Clause 803b(xi) explains: "As soon as power supply is switched ON first compressor should come in circuit immediately and the second one after 2.5 minutes."

Clause 803b(i) specifies that compressor motors normally draw 7-10 Amp during cooling mode.

Clause 803a(vi) states for HP cut-outs: "Compressor should trip within 10 minutes."

Clause 803a(vi) specifies this method to verify that cooling works even if one condenser fan fails.

Clause 803a(vi) instructs: "Check for satisfactory operation of vane relay by moving the flap by hand gently."

Clause 802c(ii) states: "Remove winding of alternator and heat in the oven at 80 degrees C for 1 hour."

Clause 802b(viii) specifies: "Ensure minimum air flow of 4 meters per second through condenser."

Clause 802b(vi) instructs: "Remove inter-cell connection, take out the cells, clean thoroughly the cells, intercell and end cell connectors and fit back."

Clause 802b(ii) clearly states that the force P' should be between 31.4 to 47.0 kg for proper belt tension.

Clause 802b(ii) specifies: "Apply force P'... until the belt is deflected from the normal to the extent of 16 mm per metre of span."

Clause 802b(i) specifically mentions: "Ensure that the gap between the two halves of the pulley is 3 mm."

Clause 802a(x) states: "Feel the expansion valve by hand. It should be cold," indicating proper expansion of refrigerant.

Clause 802a(x) specifies: "Suction should be cold and sweaty," indicating proper evaporation and return of refrigerant to the compressor.

Clause 802a(ix) states: "The outlet should not be colder than inlet." If it is colder, it indicates a pressure drop due to restriction in the dehydrator.

The dark tan film is a protective layer that forms naturally and aids in proper brush contact and commutation. Removing it unnecessarily can cause rapid brush wear.

Clause 802a(iv) instructs: "In case of Valve Regulated Lead Acid (VRLA) batteries, check for abnormal bulging of cell lids."

Clause 802a(iii) specifically states: "If lock nut is damaged, replace it."

Clause 802a(ii) describes checking tension by hand: "Belt in correct tension will respond 'alive'."

Clause 802a(i) states: "Examine the indicating white mark on the pulley axle and ensure that the pulley has not shifted."

Clause 801a(ii) states that 415V, 3-phase supply is obtained with the help of 25 KVA inverters mounted on underslung as well as onboard.

Clause 801a(i) specifies that in EOG system, coaches are mounted with 50 KVA, 750V/415V, 3-phase transformers.