45XP cannot adjust air pressure above 77psi

Cook · Post by **Cook** » Thu Apr 01, 2021 2:50 pm

I have a hypertherm 45xp. Wont let me adjust the air pressure past 77psi . Im not sure if I’m losing pressure from the compressor to the machine. Does anyone know why the machine won’t allow me to go above 77psi ?

Post by **weldguy** » Fri Apr 02, 2021 10:19 am

Cook wrote: Thu Apr 01, 2021 2:50 pm I have a hypertherm 45xp. Wont let me adjust the air pressure past 77psi . Im not sure if I’m losing pressure from the compressor to the machine. Does anyone know why the machine won’t allow me to go above 77psi ?

What it the air pressure in the compressor tank?

Do you have a gauge at the air inlet if your 45xp so you can compare pressure before it goes into the plasma?

mechanic416 · Post by **mechanic416** » Mon Apr 05, 2021 8:54 pm

The question is why would you need more then 77 psi you only have a 45 amp plasma cutter. You should only need 70 psi max for 1/2" metal.

Post by **adbuch** » Mon Apr 05, 2021 10:37 pm

Per the Hypertherm manual the 45xp requires a minimum of 188 l/min (400 scfh) @ 5,9 bar (90 psi) at the air/gas inlet to the machine. I run 100 psi at the inlet to both my 45xp and 85 as measured with an inline gauge mounted directly at the inlet and with the air/gas flowing.
David

Post by **adbuch** » Mon Apr 05, 2021 10:38 pm

Cook wrote: Thu Apr 01, 2021 2:50 pm I have a hypertherm 45xp. Wont let me adjust the air pressure past 77psi . Im not sure if I’m losing pressure from the compressor to the machine. Does anyone know why the machine won’t allow me to go above 77psi ?

Where are you measuring your air pressure?
David

45XP cannot adjust air pressure above 77psi

45XP cannot adjust air pressure above 77psi

Re: Machine will pierce but not cut

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