Had this dishwasher model as well. One arm wonder thats for sure. this dishwasher was used for a family of 7 and ran twice a day...we got it from my aunt that never used it and my parents bought it from her. It replaced a Kenmore RotoRack dishwasher. This lasted from 1976 when my parents got it to about 1984 when the timer went out and i bought a Maytag Portable the WC302 in harvest gold...
And yes this KA KDD67 did have the "Sanitzed Flo Thru Drying"...no water heating at all and that was no issue though since our hot water has a piping hot 150F and the kitchen was right above the water heater in the basement....The pics brought back many memories...