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Miller 300D I'm having issues striking an arc even when I have it turned up to 140. Or when welding the rod just sticks in the middle of a pass. Welding structural steel with 7018 1/8 Excalibur rod. Any suggestions???

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The problem might be with your rods. It sometimes happen that the flux around te metal becomes soft if the rods were kept where there is a lot of moisture. If that is the case you can 'bake' the rods in the oven to dry it our. The flux must have a lower melting poit than the metal rod so that it can make a cup. The edges of the cup keep the rod away from the metal, allowing the arc to jump.
How do you 'strike' an arc? One method is to tick on the metal. A better method is to stike the rod over the metal like you stike a match. This action will give you the 'cup' that you need to start welding.
I hope it helps.

Posted on Oct 20, 2013

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SOURCE: miller bobcat 225g plus welding problem

If the idle is not working, then it is either you idle solenoid attached to the carberator or your idle board is bad. If you apply 12Vdc to the idle solenoid is should move, if not then the solenoid is shot, no good. If it works then you idle board is bad. Also, check to see if you are 60Hertz by measuring at the outlet with a frequency meter. I recommend a Fluke meter. You should have 120Vac and 60HZ at the outlet. If the frequency is low then your engine speed needs to be increased. The idle solenoid could be causing all these problems.

Posted on May 08, 2009

co7196
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SOURCE: i have a airco super hornet welding

Adequate ground?
Power output at receptacles?. Connections are yusually the problem Engine speed 1800 rpms (high idle) good luck

Posted on Jul 26, 2009

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SOURCE: welder loses arc while welding any rod bigger than

Amps too low

Posted on Nov 12, 2009

dmftrucker
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SOURCE: Problems with welding with a Forney 180 amp. Arc Stick Welder

check your input power connections on the primary side of the welders transformer, then if its an infinite control welder check that control,otherwise if it's a plug- in selectable amperage check these connections,it sounds like the infinite control is getting dirty and not passing all the current it shows on the control, also double your O.C.V. on the secondary and see if its with-in welder specs

Posted on Nov 17, 2009

  • 1 Answer

SOURCE: Miller welder 225 arcs but wont continue welding

There is an electrical connector that the wiring harness for the engine plugs into at the rear of the generator case. On the one that I had, there was corrosion in that connector. Once I fixed the wiring there, the voltage sensing feature worked correctly. The connector was located on the right side if you were looking at the controls. Hope this helps.

Posted on Jul 16, 2012

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1 Answer

What electronic part is damaged?


Does the electrode stick to the metal? In which case your problem is with the elctrode or your method of striking the arc.

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What are 4 common welding processes?


There are four common welding processes utilized through out the work industry today. They are :
(Stick Welding or SMAW) Shield Metal Arc Welding
(Mig Welding or GMAW) Gas Metal Arc Welding
(Tig Welding or TMAW) Tungsten Metal Arc Welding
(FCAW) Flux Cored Arc Welding

There are many many welding processes, however these are the most common. The type I am going to discuss briefly today is SMAW. The most economical and cheapest way to learn if welding is for you or not is to start with stick welding. It has the least amount of variables that can go wrong for a beginner. It is not fast paced like mig or flux core, so you have time to watch the molten puddle to see what it is doing and make necessary adjustments to correct the size, shape, and contour of your weld bead. The hardest part for a beginner is to keep the electrode from sticking to the work piece. Thus is the reason it got the name of "stick welding". There are three common ways to strike an arc in SMAW. Tap Start, Scratch Start, and the last is to place the electrode upon your fingers like a pool cue, and shoot the rod like your playing pool.

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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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check your input power connections on the primary side of the welders transformer, then if its an infinite control welder check that control,otherwise if it's a plug- in selectable amperage check these connections,it sounds like the infinite control is getting dirty and not passing all the current it shows on the control, also double your O.C.V. on the secondary and see if its with-in welder specs

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Need code number to be exact, but sounds like the wiring to the current transformer is incorrect.

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