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My lincoln ranger 250 no weld output

My lincoln ranger 250 engine driven welder has no welding output. Each time its used the current dial has to be turned up higher to maintain the same output. Now it won't even start an arc. The 240vac side works normal.

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  • Master
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Sounds like the transformer winddings which generate the amperage for the arc are breaking down

Posted on Jul 07, 2010

  • technoid52 Jul 07, 2010

    The is an engine driven generator welder. I thought you guys knew your stuff on here. I called up Lincoln tech service and got free information for the problem to be solved.

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[PDF]Ranger 225 Product Info - Lincoln Electric

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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.

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My welder revs up but wont put out full power


We need a better description of what is happening. I see many engine driven welders that when loaded up heavily the engine rpm drops because of needing a tune up or complete engine overhaul. Since the engine can't run at designed r.p.m. the welder won't put out "full power" With a better description of problem, Such as engine is not slowing down but will only weld at 100 amps experts here could help you better.

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Ranger 10,000 has low weld output and ac output


This is not a simple question. Take this magnificent machine to a service shop.

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Welder will weld for about 30 minutes and then will not weld until the unit cools down. generator function is normal. the repair shop told me that the welding leads were bad so I replaced them and have the...


If you check the wire A4 which connects the bridge to the current selector switch, make sure the connections are clean and tight. The sense wire parallels it and dirty connections on A4 can make more current flow through the sense wire than normal.

It is also possible the current sensor may be faulty, or has a bad connection, or is even seeing transient spikes from brush noise. The sensor connects to terminals 3 and 4 of J2 the 4 terminal connector on PCB1. And looks like a plastic and metal donut The sense loop for welding is supposed to be a single loop through and the generator sense should be 3 loops through.

Sep 12, 2010 | Lincoln Ranger 250 Gxt Welder Generator...

1 Answer

No or little ac output


By ac you mean receptacles, not ac welding? 
If so what about welding output on AC (DC)?

If welding is OK then you may have breaker or fuse problem.
If welding output is also low or no output your problem is the generator.
You should check your gen rpm to be normal. If so you may have field problem: rectifier, AVR etc.
If you can measure the field DC voltage at rated rpm, if it is missing (very low) try to find any circuit broken.
If you do not succeed answer this instruction in order to give you more.

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Will not weld or arc , I bought my ranger after hurricane ke ask a generator, and never elded with it. today for the first time I tried to weld with it and it will not arc


Make sure the WELD TERMINALS SWITCH is in correct position.: In the WELD TERMINALS
ON position, the output is electrically hot all the time.
In the REMOTELY CONTROLLED position, the output is
controlled by a wire feeder or amptrol device, and is electrically
off until a remote switch is depressed. If you don't have your manual, you can download one at http://www.mylincolnelectric.com/Catalog/operatorsmanualdatasheet.aspx?p=104081

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Welding in TIG mode. Weld for 10 minutes, stop


the unit will need to go in for service there is a control bord issue there 4 in the unit these boards have to be tested by Lincoln i have the same welder and what they will do is swap out the boards till the bad one found if the unit is not under warranty they can be expensive mine coast 500.00 for the 1 control board there is not a clear way to say it is a particular one do to there all inter linked as to functions. go to the web site and search for a service center in your area hope this helps

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WHEN I TRY STRIKE AN ARC WITH A ROD YOU HAVE TO HIT IT 5 OR 6 TIMES TO GET IT TO WELD ITS HARD TO KEEP IT GOING BUT AFTER 4 OR 5 SECONDS IT WILL BURN LIKE NORMAL (USING PROPER AMPERAGE)


Is this on new rods as well as one's you'be been already welding with? Depending on rod types, some will "flux over" the end, after welding insulating the tip. When you're welding at a low setting, with a small rod, sometimes it is hard to start an arc. A 7018 rod is a good example of this. Strike the rod like a woodden match, or drag it on the metal, to expose the rod. It also depends on your welder. Some have settings to help start an arc and then control the current. Older transformer welders arn't that smart and are less forgiving on low current thin metal settings.

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Lincoln ranger 250 voltage problem


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.

Regards,
Carl

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