A. (a) =All lamps fail to burn.= If turbine is not running the wrong
steam valve in the cab may have been opened, or there may be a second
valve, closed, in the steam pipe. The screen on the governor valve in
the turbine may be clogged. Remove brass cap at top of turbine and
unscrew screen or strainer-cap.
(b) =Turbo-generator runs, but no lights.= Wires may be
"short-circuited" (crossed) which will cause brushes to spark badly, and
turbo-generator to pull hard. The "short" can usually be found by an
occasional sparking or smoke at the point of trouble. Separate and
protect wires when short is found. The brushes may be "cocked up" as
left by some repair man. Open the dynamo door and see that the brushes
bear on the copper commutator. A wire may be loose at the dynamo binding
posts (which may be seen when the dynamo door is open), or at the main
switch in the cab. A main wire may have broken. (All locomotives are not
equipped with fuse plugs.) A fuse plug may have become loose or burnt
out. Replace with new fuse plugs or break an incandescent lamp and twist
the leads in the base together, when the base may be screwed into the
fuse plug socket, answering the purpose of a fuse plug, temporarily.
(c) =Headlight fails to burn.= Examine the wires between cab switch and
head lamp for breaks or disconnections. Examine fuse plugs (which are
sometimes in head lamp circuit only) and proceed as in (b) if trouble is
found there. Headlight bulb may not be screwed in far enough to make
contact in the socket, as the lock-sockets provided to prevent lamps
loosening cause lamp to screw in hard. Lamp may have broken fillament.
Replace with proper type of lamp or use a cab lamp.
(d) =Lamps burn dim.= Steam valve not open wide enough. Boiler pressure
too low. Brushes sparking badly on commutator of dynamo--due to poor
contact. Governor or steam-valve of turbine improperly adjusted.
(e) =Lamps burn too brightly.= Improper turbine regulation. Throttle the
steam valve in cab until lamps are reduced to proper brilliancy. Report
all irregularities on arriving at terminal.
=SCHROEDER HEADLIGHT=