Maybe I didn't explain what happened fully. This mashkiach was supposed to open up the place for the goyim and turn on the machines. The goyim had the keys to the place to come in whenever they please and turned on the machines.
was this for a Pesach run (tmidi needed) or for a regular Kosher run? i.e. Coca Cola and most national year-round cold and all-parve locations don't have mashgichei t'midim in an all-kosher facility, just regular checks, access and yotzei v'nichnas at any time of day or night.