I used to work on 5 of their 650 lb, stacked 4 high at a truck stop once. I really enjoyed working on them, as they were a challenge. I always thought they were fascinating the way they worked. I usually managed to get them going, but being as they were 15 years old, it was tough at times. I even designed a replacement for the Water level sensing device using metal probes instead of thermistors. They just replaced four of them this last year. 20+ years of service, I still have some parts laying around. (I'm not in anyway connected to the company). Just babbling.