64. Q. What is the duty of the superheater damper, and how does it
operate?

A. The duty of the damper is to control the flow of gases through the
large flues, thereby protecting the units which are contained therein
from being overheated after throttle is closed. The position of damper
when the engine is not working steam, is closed.

65. Q. What will be the effect on the steaming of the engine if the
damper does not open properly?

A. Engine will steam poorly for the reason that there will be no draft
through the large flues. The steam will not be superheated because
heated gases cannot come in contact with superheated units contained in
the large flues.

66. Q. How may steam failure be avoided in case the damper fails to
operate?

A. The counterweight may be tied up, thereby opening the damper.




=AIR BRAKE QUESTIONS=


1. Q. What is an air brake?

A. A brake operated by compressed air.