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My review of the CT-312 3 in one Tig/MMA/plasma cutter DC Inverter welder. The kind you purchase off Ebay from China and the USA. While Ive not actually run the machine yet this video will let you in on what you get in the box and what you will have to get or have in order to actually start using the unit. They come with most the stuff you need to set it up but will have to provide a power cord end to your 120v outlet, some misc Air compressor connections and of course an Argon tank (required for TIG welding)
Do not trust the compressed air fittings they provide while the threaded components are satisfactory I would replace them as soon as possible.
3 x 3/8" International pipe thread to what ever size line you choose I believe they provide 1/4 " but you can use other similar sizes.
The hose clamps are junk and as soon as you get them near tight enough to stop air from escaping they strip so do yourself a favor and pick some up before you unbox your welder.
You will need a plug end for the power cord a male cord end to go into your house receptacle (standard 120v male) Id suggest 14/3 or better so as not to limit the machines draw and or start a fire. black white and yellow/green the white and black are the 120 push 120 pull the green/yellow is the ground.
When you go to pressurize the system including the moisture filter pull down on the release valve on the bottom until such time as there is enough pressure in the system to hold it closed or it will leak as fast as you fill.
Do teflon or pipe fitter tape the threads on all the connections
I would also add quick connects to the system so you can easily connect and disconnect your compressor from the welder Id also use the ones with check valves so you do not lose all pressure while doing it.
the first few times you pressurize the system get air in the tank then shut off the compressor and listen for leaks if you cannot pinpoint it a spray bottle with a little soapy water carefully sprayed on the connections and then watch for bubbles will show you where they are.
Be careful with the actual pressure in the system too little and your plasma cutter will not work and ruin the tip.
Information on the moisture trap can be found here its not identical but dam close
www.plasmapart....
manuals.hobbico...
the actual unit is a DT ARF2000