wiring grasslin dtmv40

Hi, Ok please dont call me stupid I dont do this kind of work for a living,but my family does own a resturaunt.So I try to fix as much as I can.Im not sure on the wiring of the precion to the grasslinThe wiring diagram sort of makes scence.but not sure.any help would be great.

sorry guys forgot to mention this is a traulsen 115v freezer the .the timer is a 6141-00,but you guys probably new that.thanks