Turning to this forum because I’ve gone through every resource I can find and still can’t fix this issue. been trying to get through first cuts on an xr + razorweld cut45 that I didn’t assemble. The pilot light flashes, but no arc voltage.
I started from the recommended settings - pierce height 0.15 cut height 0.06, but gradually went down to pierce height 0.08 cut height 0.05 with no change. Also tried using both smart voltage and voltage set to 117 (found in a cut chart for 14 gauge mild steel), and with varied amperage settings - nothing. Voltage testing all comes back green. Compressed air setup is a little anemic but meets minimum requirements as far as I can tell, especially for short cuts, and has no problems I can see or hear getting through the torch. Every air problem I know how to diagnose results in low-quality cuts, not failure to pierce or cut at all, but please correct me if i’m wrong.
Unless I am gravely mistaken about what a work clamp is, the work clamp is attached to the material.
I set up a straight test cut in firecontrol, manually setting z as close to the material as possible without literally touching it, which pierced maybe 1/4-1/2 through the metal, still no arc.
I feel like I’m going crazy, frankly. I’ve already had to fix a lot of issues with how this thing was installed - couldn’t get voltage at all initially - but I know how to operate a plasma cutter, not how to install or repair one. I would really appreciate some advice here.
So the pilot arc fires?
Did it throw any codes in Firecontrol?
Is the Razorweld set to 2t or 4t mode?
In 4t mode, you may see the issue you are having.
Low air pressure will prevent the torch from firing, but it won’t pilot arc either.
You want the setting with one arrow pointing up and the other down. Not the one with points on both ends of each. The top light in this picture.
Did you check the torch height manually? If its to high it can not transfer the pilot arc to cutting arc. Yes the work clamp that is positive goes on the metal and the torch is negative.
thank you very much for the response - the pilot arc fires, yeah, and it’s set to 2t. firecontrol eventually throws up a standard ‘cutting voltage lost during cut’ message, suggests making sure the work clamp is connected or lowering pierce and cut height, both of which i’ve done and neither has worked.
thanks for the response - pierce and cut height have both been appearing higher than I programmed, but programming new increasingly low heights didn’t change anything. set up a test cut directly in firecontrol, as low as possible without literally dragging on the material, still nothing. pilot arc clearly made contact with the material but didn’t fully pierce or transfer to cutting arc.
Torch height is set manually with feeler gauges not with the program
I feel like we’re talking about different things, can you elaborate?
Torch height is the distance from the cutting tip or cnc shield and the metal being cut.
He has an XR table with a powered Z axis. The heights are set in the program.
Ok, but if the torch is not set correctly on the mount and its to height then it will never give you the right height with out checking it. It just don’t give you the height magickly.
We haven’t seen any pictures of the torch mounted. If he followed the assembly instructions, they tell you how to mount the torch properly to reach the material without bottoming out the Z travel.
The number of people who take no interest in how their machine works is troubling. Many seem to think there is some magic involved in making it work.
If you’re still having issues don’t hesitate to give us a call at our support line or email us here: support@langmuirsystems.com
Sometimes these issues can also occur if the VIM/THC aren’t setup properly. It’s especially possible if you didn’t assemble it yourself and don’t know what to look for.