View Single Post
  #5   Report Post  
Posted to rec.crafts.metalworking
Bruce L. Bergman
 
Posts: n/a
Default Troubleshooting a plasma cutter

On Sun, 16 Apr 2006 18:04:56 -0400, Jack Hunt wrote:

On 16 Apr 2006 10:55:10 -0700, "Lefty" wrote:

Easy test is to jumper the switch.


I'll try that first thing in the morning. Thanks.


I can't find instructions listed, "650" is not a complete model
number, is it...?

If you don't have the instructions, try looking them up at
www.esab.com - they might have a troubleshooting flow chart in the
back of the book that will lead you right to the problem. Either
that, or you find out you did something seriously wrong.

Failing that, you open it up (carefully!) and look. Make sure there
are no popped fuses, any safety switches (like the air pressure
failure switch mentioned above) are working properly. As in, connect
an ohm-meter across the contacts, apply air to the inlet as a function
test, and see what happens. And make sure the supply air pressure is
high enough - if the safety is set to cut out below 50 PSI, you have
to be running over that point...

DO NOT jumper switches or safeties randomly while you try to run the
machine unless you are sure of what you're doing, and you are sure
that the air pressure is in fact there - there is a good reason why
the safeties were put in there. If it wasn't totally blown before,
it will be after you jump the safety...

And you look and sniff for any components that have "gone all
melty." You'd be surprised how obvious that is sometimes...

-- Bruce --

--
Bruce L. Bergman, Woodland Hills (Los Angeles) CA - Desktop
Electrician for Westend Electric - CA726700
5737 Kanan Rd. #359, Agoura CA 91301 (818) 889-9545
Spamtrapped address: Remove the python and the invalid, and use a net.