A. Work the steam off with engine after covering fires heavy with coal or ashes, and when the boiler is sufficiently cool put safety valve in working order.
Q. If water in boiler is suffered to get too low, what may be the result?
A. Burn top of combustion chamber and tubes, perhaps cause an explosion.
Q. If water is allowed to get too high, what result?
A. Cause priming, perhaps cause breaking of cylinder covers or heads.
Q. What are the principal causes of foaming in boilers?
A. Dirty and impure water.
Q. How can foaming be stopped?
A. Close throttle and keep closed long enough to show true level of water. If that level is sufficiently high, feeding and blowing off will usually suffice to correct the evil.
Q. What would you do if you should find your water gone from sight very suddenly?