No manual here, but that machine is DC only, as there is no way to select AC or DC on the front panel anywhere, nor are there even the most basic AC adjustments on the machine (Balance for example)
Red knobs from left to right
Gas preflow - Amperage setting (dual scales for high/low amps) - Downslope time (and maybe gas afterflow)
In between the 2 left knobs the small toggle switch sets welding current to low or high level
To the right of the most right red knob thats a TIG/arc toggle switch, so you can weld electrodes as well as tig.
Green light - Could be anything, my guess is that it lights up when actually welding.
White light, power on/off??
Red turning switch is for setting input voltage
2 fuses are below the 2 green/white lights
On the bottom
Leftmost = negative dinse terminal, connect tig torch here
Rightmost = positive dinse terminal , connect work return here.
(When stickwelding the work clamp should be set on the negative, and the stinger/electrode clamp to the positive terminal for most electrodes)
The grey seems to be a blank for remote control (or another option not fitted)
The 2 smaller connectors are for a torch switch and for your argon gas to the torch.
There is a white grommet in the bottom row next to the Positive terminal and I wondered if there had been a polarity switch in there at some time in the past? I think you are right with the gas pre-flow and post flow timers for the two small turning knobs either side of the amperage knob. The green and white lights I will find out shortly what those do if anything at all? It is currently (no pun intended) wired up to operate on 415/3phase.
In due course I will acquire a Tig torch and gas and have a go with it but for now it will be my transformer type DC stick welder. Inverter welders are fine but I find not all rods are happy when put through them, particularly 6010.
Many thanks for the information, it is much appreciated.
I ran a few test stick welds with it last night and all was good. To be fair it is a well built bit of kit and has good big and heavy transformer too. I will probably leave it as a stick welder and look for an AC/DC Tig unit to add to my growing collection of welders!