229. A compressed air or steam hoisting plant shall have:(1) a gauge that can be read by the operator when he is at the controls of the hoist and that continuously indicates the feed pressure;
(2) an overwind limit switch, controlled directly by the conveyance or the counterweight;
(3) an underwind limit switch;
(4) a manual intake cut-off valve;
(5) a manual exhaust cut-off valve.