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www.lincolnelectric.com/assets/global/...1/e689.pdf Lincoln ElectricENGINE DRIVEN WELDERS ... 50-225A DC 15-25V CV Welding ... Ranger® 225) for aluminum and other alloy welding. .... equipped with valve for gas flow.
If it has a setting for constant volatge, that is for wire feeders, flux cored or mig. Constant current is for stick welding. Some wire feeders have a switch to use them with a constant current machine, but that doesnt work very well, and , in my opinion, is hard on the computer in the feeder.
It looks like the ones we use in the field with a ln-25 wire feeder and flux cored wire. for mig you will also need a bottle of sheilding gas.
Hi, Check the current control resistor with an ohm meter. The center terminal should have a smooth rise or fall of resistance when measured to one end or the other of the resistor. If the resistor and the wiring to it are OK, check the shunt in the output it'll be by the "electrode" terminal. If both are OK you probably have a bad control board.
I think I can help you do this, let's start with the general and you can ask questions if we don't cover everything you need.
The HF251D connects to the welding machine using 3 cables, you connect the Electrode terminal on the welding machine (the Lincoln) to the Electrode In terminal inside the HF251. Connect the Work terminal on the Lincoln to the Work In/Out inside the HF251, also connect the work (ground) clamp of your torch to this terminal. Be careful to select the correct size cables for the maximum current you intend to weld with.
The 3rd cable is the gray 14 pin round control cable that comes out the back of the HF251, it needs to be plugged into your Lincolns RMT14 socket. You'll also need to make sure that the Lincoln is set for remote control, this is usually a switch on the front panel. I'm pretty sure that the remote control cables have a standard pin layout, but we can check this by comparing the specs in both owners manuals.
After that you connect the torch and gas bottle to the HF251, start the Lincoln, and TIG weld until you're happy.
I've got a manual for the HF251 and can get a shop manual for it if we need it. What I'm not sure about is your Lincoln - what model is it exactly?
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