Originally Posted by
Feras
i have HPR 400XD with hypertherm edge pro CNC and arc glide THC and for more than 5 years it worked perfect
lately i cannot cut through 40mm mild steel with 400 amps...pierce or edge start
i checked the following:
1- all gas supply (O2 , AIR) pressures are 8.5 bars
2- performed all the gas leak tests from CNC and passed all
3- replaced the whole torch assembly , automatic selection gas console, metering console and the hoses between them, even the gas regulator but no changes
4- when i perform the cutflow or preflow the inlet gas pressure 1&2 is around 8 bars. when turned off, the pressure drops sometimes to 0 bar
5- i performed cutflow or preflow then blocked the lines between selection and metering console and watched the pressure and no drop at all on the manometer on the output of selection console
6- i performed cutflow or preflow then blocked the lines after metering console and watched the pressure and no drop at all on the manometer on the output of selection console
7- tried to cut 40 mm steel but cannot go through..there's about 1 mm uncut at the bottom
8- all cut parameters is ok and checked
9- all consumables are genuine
9- machine works perfect on 260 , 160 amps
any advise?
Best Regards