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Medha Servo Drives Pvt Ltd.
MAS 696 Operator’s Manual
10.13 Changing Operating Ends
Use the following procedures to change the Lead from the Locomotive on
one end of a tandem to the Locomotive on the opposite end:
ON END BEING CUTOUT
1. Set Independent Brake in FULL (Full application).
2. Set Automatic Brake handle in service zone and make a 1.4 kg/cm
2
(20 psi) reduction.
3. After Brake pipe exhaust sound stops, set Control console Brake
system CCU set up Valve in TRL (TRAIL).
4. Set Independent Brake handle in REL (release).
5. Set Automatic Brake handle in RUN (running).
6. Set Throttle/Dynamic Brake handle in IDLE and Set Reverser in
CENTER, then remove it to lock the controls.
7. Set all off, make sure that the Gen. Field switch and Eng. Run switch
are OFF.
8. At the Engine Control Panel, set switches on as needed.
9. All the Circuit Breakers on No.1 and No.2 ECC cabinet Circuit
Breakers are to be remained ON.
10. After completing the preceding steps, move to the cab of the new
LEAD UNIT.
ON END BEING CUTIN
1. At the No. 2 Control Console, make sure that the Gen. Field switch is
OFF (slider down).
2. Insert Reverser (direction handle) and leave it in CENTERED.
3. Set Automatic Brake Handle in FS (full service) for at least 10
seconds to clear any power-up penalty.
4. Set Independent Brake in FULL (full application).
5. To avoid an Emergency Brake application :
(a) Set Control Console Brake system CCU set up valve in LEAD-OUT.
(b) Set Automatic Brake handle in REL (release), then wait for
equalizing reservoir Air pressure to raise to 5.17 kg/cm
2
(73.5 psi)
(c) Set Brake system CCU set up valve in LEAD-IN.
6. All the Circuit Breakers on No.1 and No.2 ECC cabinet Circuit
Breakers are to be remained ON.
7. At the Engine Control Panel, set switches as needed.
8. Set ENG. RUN, CONTROL & FP and GEN. FIELD switches ON and
other switches as needed.