Re: Hypertherm Powermax 380 problems

Scale is really nasty sometimes.  I had a slab of 3/8" IIRC on the table and it was
hot rolled - scale thick.  The table wouldn't connect.  I had to grind a shinny spot
and clamp onto the slab myself. (slab is slang :-) ).   I later determined that even on
nice metal - the work clamp was really a post clamp (a.k.a. Battery charger) and had little
contact surface to pass current.  I replaced it with a 300 amp that (I don't use 300 but it
improves the connection!!) has three rods that clamp on the metal.  Easy task.  Lower resistance
and lower inductance - both killers to DC current and HF arc.

Martin
Martin Eastburn
@ home at Lions' Lair with our computer lionslair at consolidated dot net
NRA LOH, NRA Life
NRA Second Amendment Task Force Charter Founder


bob wrote: 
cl wrote:

bob wrote:

thanks for the tips, i will try again


What is your powersource (110 or 220) and air comp capacity? 


 I am plugged into a Generac 4000 xl generator, 230 volts ,4000 watts.
I can pull maybe 17 amps out of it (220 v). I could wire the plug  110
if necessary ?. I can pull 30 amps then on 110v.
 My air compressor is a Ingersol Rand 5 hp, gas engine air compressor,
the ones u see with two small tanks but volume is NO PROBLEM, I have 50
feet of air hose going to two air filters. I a pretty sure the air is
dry and oil free. But I could be very wrong.


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