I am working on an old McQuay Freezer Evaporator Coil. It is model: ELC-105-CM33, circa 1986.
Some previous service person removed the Defrost Termination/Fan Delay control from the coil. The Evaporator goes into defrost and stays as determined by the Defrost Timer, and the fan come on immediately coming out of defrost.
The Electrical Junction Box is on the LH side of the coil (return bend end). I "assume" the DT/FD control is mounted in that area. The DT/FD control, is the "flat flange type" . The question is.......where was the control originally mounted.