In from the field for a moment...
Dad tested the temperature from the scalder with his finger, only to retract and say the water was electrified! A few breaker flips later, a thorough troubleshooting session was complete and Dad figured out the upper heating element was dysfunctional.
The elevator called earlier today saying the hog grain was ready, so Dad is now on his way to pick up the grain and a new heating element. Four dead chickens are in the tin cones as I write and I'm waiting for the remaining element to finish heating up to 148 degrees.
Signing off -