Yes, a motorized timer, 120V SPDT.
I had some time this week to disect what I had and get the ball rolling, but they haven't installed the components yet, and I think it's kind of low priority.
Had a big hassle installing a delay timer for the wash cycle for the milk tanks. The problem was that the milk truck driver would set the tank to wash cycle after draining it, but this was usually after wash down in the parlor, so the water tanks weren't hot enough and the bacteria counts became high.
No problem says I, I'll put in a time delay relay and a bypass switch... But little did I know that the first relay I bought had a bad timer (digital) and, not being real confident in my control work, I assumed that I had done something wrong. This is complicated by the fact that the only time to troubleshoot is between the time the truck empties the tank and before the wash cycle. Being further complicated by a weeks delivery time for the relay (Glad I put in a bypass). Being further complicated by not really being sure if the relay was bad...
It was. *whew*
Who pays for the time that it took me to figure it out? The customer? (not his fault) Me? (Not completely my fault) Or my supplier? (yeah, right)... I guess me.