Arrived on, 9/11/23 Rich Was let in by school staff. Kitchen was locked. Went to the Hobart dishwasher in the dish room. Lady who let me I. Didn’t know what was wrong other then it is heating correctly. Dishwasher was turned off. Turned on and let fill. Contractors energized and the machine heated. Power wash was at 150, wash was at 160, rinse was at 170. Final doesn’t read until it goes into final rinse. Put some trays through and each time final rinse started the temp was only going to 121°. Removed top panel to control compartment. Getting 480v across all 3 legs coming into the terminal block,and out to the contactors. Getting 480v across the contactors to the elements. Checked external Hatco booster. The power switch was turned off. Checked booster. All fuses are good. Getting 480v across all,legs. All contactors are new. All elements are good with good resistance. Turned on power switch and booster heated. Ran many trays through the dishwasher and the final rinse temp was 185°.