The force of the steam tends to drive
the air out of the stack and the smoke box, this creates a strong
draught. But you say, "What if I have no steam?" Well, then don't blow,
and be patient till you have enough to create a draught; and it has been
my experience that there is nothing gained by putting on the blower
before having fifteen pounds of steam, as less pressure than this will
create but little draught and the steam will escape about as fast as it
is being generated. Be patient and don't be everlastingly punching at
the fire. Get your fuel in good shape in fire box and shut the door and
go about your business and let the fire burn.
Must the blower be used while working the engine. No. The exhaust steam
which escapes into the stack, does exactly what we stated the blower
does, and if it is necessary to use the blower in order to keep up
steam, you can conclude that your engine is in bad shape, and yet there
are times when the blower is necessary, even when your engine is in the
best of condition. For instance, when you have poor fuel and are
working your engine very light, the exhaust steam may not be sufficient
to create enough draught for poor coal, or wet or green wood.
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