A computer system compnses a processor, memory and a plurality of devices, the processor and the memory being operable to effect the operation of a fault response processor, and a device driver for each of the devices. A part of the system outside the first enclosure makes use of a motor position signal from the rotary potentiometer that is processed by a microcontroller that a worker can interact with at a switch panel to set and adjust motor travel limits without needing access into the motor enclosure. The shuttle valve has a plug that is forced by gas pressure entering the second inlet opening, to move to and seal against a first sealing surface, thereby forming a passageway between the second inlet opening and the outlet opening. The network component is placed in a standby mode. 0 seconds, wherein the yield of light-fraction olefins can be enhanced.