Harrison conversion to single phase

[Richard]

Without spending too much time on the schematic - yeah, looks to be picking a supply off two phases and transforming this to 110V (if the markings on the schematic are to be believed - no reason not to). So, yeah, get a 220-110V transformer of sufficient rating - it'll be right.

Reversing a single-phase motor is a case of reversing the starter windings. The usual three-position motor switches (On-Off-Reverse) provide the necessary switchgear.

So this is what I think I need to reverse the single phase with the two contactors I have in the machine:


I took the lamp off, built like it's designed to survive a direct nuclear strike! Massive cast box with a 415v to 50v transformer, 4 fuses and isolator.

I'm sure I can replace with something simpler...