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AUTOMATIC ALARMS AND SAFEGUARDS

CIRCUIT BREAKERS (See Figure 2)

Circuit breakers operate like a toggle switch to open a circuit manually.

An overload in a breaker circuit causes the breaker to open the circuit automatically and the toggle moves into the center position, indicating that the breaker has tripped.

A circuit breaker is reset by moving to OFF, then to ON, after allowing a few minutes for the thermal element in the breaker to cool. The breaker should only be reclosed if there is no visible reason for the automatic opening of the circuit. If it trips after reclosing, it should be left open unless instructed otherwise.

COLORED LIGHTS AND BELL
(CONTROL CONSOLE AND ENGINE CONTROL PANEL)

During normal locomotive operation, the bell and all colored lights are off. When the locomotive consists of more than one unit, colored lamps will light on the affected unit only. The bell will sound on all units.

NOTE : (In Freight Service only) If troubles occur on two or more units at the same time which cause the alarm bell to ring, turn the EC switch on all affected units to START position before attempting to restart any unit.

NOTE : All pilot lights are arranged with "push to test" feature to check the reliability of the light.

LEAD SAND LIGHT

Depending on operating conditions, the operator may require sanding for the wheels of the lead axle only. At such times the LAS switch on the control console is closed for as long as such sanding is desired. The LEAD SAND light will come on to remind the operator that this sanding is continuing.

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