Have a crossfire w/ XL extension that has been working fine. Attempted to use and forgot to attach ground lead and unit fired and appropriately stopped w/in seconds. Attached ground to the metal being cut and unit has not fired since. Changed to all new consumables. Rechecked Sheetcam file setup. Reground/cleaned metal where attached ground lead. Read in the forum that airflow should be around 75psi when active. Although it has never been an issue previously using the factory setting the flow when active was around 45 psi. Increased unit flow and highest I can get it is 65psi (not a compressor issue and flow meter reading entering unit is 90 psi. Disconnect cutter from CNC unit and still won’t fire under manual triggering. Completely stumped, any opinions? Thanks Tom M
I’m not familiar with the Razorweld at all, but since it won’t fire manually, check the simple stuff.
Does shorting the torch on/off plug cause the machine to fire?
Are your consumables installed correctly?
One member recently showed one of the two pins under the retaining cap stuck in the down position, which causes an open circuit leading to a failure to fire. Have you checked that as well?
consumables oriented correctly.
pins under the retaining cap move freely up/down.
Not sure how/what shorting the torch on/off plug entails
RW air regulators are a fairly common failure item. Are you taking the cover off to adjust air pressure? And are you using the button on the front to check the air pressure while it’s flowing?
Cover off and adjusting air flow w/ the regulator - airflow the same (about 65psi) on unit’s front gauge when manually triggering torch or when use the button.
If you have 90psi going in and you adjusted the internal regulator all the way open and can only get 65psi out the regulator is bad as @Knick said. You need to buy pass the internal regulator.
You can check and see if you get a spark by removing the cnc shield pressing the trigger and touching the cutting tip to the metal.
In most cases not hooking up the work clamp will not cause it but if there is no spark it may have fried the board,
is the “cnc shield” the same as the cap on the torch
Are you using a hand torch or machine torch. If your using a hand torch you most likely have the drag shield on it. That will never work on the table anyway.
Drag shield
CNC shield
torch is dedicated to the cnc, have tried it w/o going thru fire control and manually triggering - any plasma hand cutting I use my Lincoln tomahawk - tried as suggested and get no spark
You still have not said if its a hand torch or machine torch?
sorry for reply delay - Langmuir sent me an email last PM that my reply failed to be sent. Razorweld Hand Torch
George also asked if you were using the drag shield or the CNC shield.
I don’t know RazorWeld but on my Hypertherm, if it throws an alarm, it will not do anything until it is cleared. Is there a chance RazorWeld has thrown an alarm on the display?
no drag shield. RW cut 45 does not have a display. As initially noted, torch (hand type) appropriately stopped firing due to no ground, ground attached to work piece, re-ran program and it cut a penetration hole then completely stopped firing since - regardless of running thru fire control or independent of the CNC.
I read on another thread that someone with your hand torch found that there was excessive resistance in the wiring/contacts of the torch trigger. He cleaned and worked on it until the resistance was down to 1 ohm. Perhaps something there to look at.
Thanks for idea to “clean” the torch. Wasn’t expecting to find this catastrophic failure. Since electrical trouble shooting isn’t my forte, given this damage, any suggestions on what else might have gotten damaged before I purchase a new torch and air regulator for the RW cut 45? Thanks to all that responded to my posting.
That looks like the screw was driven right through the wire during assembly of the torch. Was that screw damaged?
Within specification.
That didn’t just happen. That has been going on for some time. The positive pilot arc wire was shorting out to the negative power wire. When you forgot to hook up the work clamp it finished it off.
Hard to tell if the screw is burned because they are all black and burn residue on other parts wipe off easily so when backing out screw it may have been wiped clean. Excellent theory given that the damage is directly adjacent to one of the screws. Can I assume the rest of the unit is OK and can proceed with replacing the torch (going to get a machine torch this time) and a new filter regulator (initial try at removing hoses unsuccessful because fittings likely have no Teflon tape or similar and they very tightly seated) don’t want to put in anymore effort if I will end up having to buy a whole new plasma cutter.