ESS Uniarc 3/5 MFD TIG welder project

Hi guys,

here is the schematic diagram for TIG welder - ESS Uniarc 3/5 MFD

I am doing a complete restoration and upgrade of this great TIG welder. Soon I will update here whole project as I have some updates. Till now the whole metal is sand blasted and it's waiting for painting. In the meanwhile I have done this schematic with corel draw so everybody can download this and print if needed. Resolution is pretty much enough ;) I would like to ask for recommendations and opinions regarding upgrade!

Here are the schematic:
.

English version

German version

I hope that translate in English version is correct ;)

This was original witch was inside of the device:

Cya soon!
pallermo