A. Leakage past the pin valve in the maximum pressure head will cause a constant blow at the relief port in all positions of the brake valve; leakage past the pin valve in the excess pressure head will cause a blow in the first three positions of the brake valve only.
29. Q. What would be the effect if the relief port "c" stopped up?
A. The compressor will not start promptly after the pin valve seats.
30. Q. What would be the effect if the drain port "W" were stopped up?
A. Steam leaking into the chamber under the governor piston will form a pressure and prevent the piston being forced downward to close the steam valve; the compressor will therefore continue to work until the main reservoir pressure is about equal to boiler pressure.
31. Q. If the pipe leading from the feed valve pipe to the excess pressure head of the governor breaks, what effect will it have on the compressor?
A. The compressor will stop when the main reservoir pressure reaches about forty-five pounds.
32. Q. If the pipe breaks, what should be done?
A. Plug the end toward the feed valve and put a blind gasket in the pipe leading from the automatic brake valve to the governor, at the connection marked ABV.
33. Q. If the pipe leading from the automatic brake valve to the governor breaks, what should be done?