If the injector fails to take hold at once don't get ruffled but repeat
the above move a few times and you will soon start it, and if you have
tact, (it is only another word for natural ability) you will need no
further instructions to start your injector. But remember that no
injector can work coal cinders or chaf and that all joints must be air
tight. Don't forget this.
It is now time to give some attention to the heater. While the heater
is no part of the pump, it is connected with it and does its work
between the two horizontal check valves. Its purpose is to heat the
water before it passes into the boiler. The water on its way from the
pump to the boiler is forced through a coil of pipes around which the
exhaust steam passes on its way from the cylinder to the exhaust nozzle
in the smokestack.
The heaters are made in several different designs, but it is not
necessary to describe all of them, as they require little attention and
they all answer the same purpose. The most of them are made by the use
of a hollow bedplate with steam fitted heads or plates.
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