61. Q. What lift is given the different air valves?
A. All valves have 3/32-inch lift.
DEFECTS OF THE COMPRESSOR
62. Q. What are some of the common causes for the compressor stopping?
A. Lack of lubrication; bent, worn or broken reversing rod; loose or worn reversing plate; nuts on air end of piston rod coming off; defective compressor governor; and, in addition with the cross-compound compressor, final discharge valve broken or stuck open, or packing rings in main valve pistons breaking and catching in the steam ports.
63. Q. What will cause the piston to make an uneven stroke?
A. This may be caused by a broken or stuck open air valve, or air valves not having proper lift. Where the piston short strokes, it is generally caused by over-lubrication of the steam end.
64. Q. What are some of the common causes for the compressor running hot?
A. The overheating of the compressor may be due to any one of the following causes: Running at high speed; working against high pressure; packing rings in air piston badly worn; air cylinder worn; defective air valves; air passages or air discharge pipe partially stopped up; leaky piston rod packing; lack of lubrication.
65. Q. What will cause the compressor to run slow?