I have a problem with this PAK 25. When i turn it on and plug air into it, it it gives air thru to gun immediately and stays that way rgeardless of what i do. The air just dont stop.
Now if I try to get cutting i can get a momentary arc and a quick plasma spurt for a millisecond but it wont maintain a plasma to cut, just cuts out.
Now the machine sequence says turn it on, then press the RUN/SET switch to SET and air will flow whilst you set regulator PSI. Then switch back to RUN and air should stop. Well mine doesnt, it just blows air constantly.
Now I know this points straight away towards a faulty air pressure switch, ive shown some pics of it and ive done some basic tests of it with machine off, there is no continuity thru it with my meter, which i thought i would get if this switch is stuck engaged.
Ive you yet tested the cutoff solenoid as i havent got a 24-60dcv source to do so, but i will source a couple of car batteries monday and parrallel them to get my 24vdc to test it opening/closing.
Also regarding the presure switch itself I intend on putting it back in the machine and tunring the machine on to see if it activates with the machine power, if it does then god knows where my pcb problem may be. Im hoping the switch is fine and this is just a problem solenoid, but the solenoid is showing resistance at 14.9 on my meter when meter is set to 200ohm range. Im guessing this is showing that its fine coil wise, but looking at the state of the corrosion within the inside of the pipes it couold be that the solenoid is stuck open with corrosion. BUT!!!! surely constant air flowing shouldnt be the cause of this millisecond arc from the torch when i pull the trigger... Surely the arc would fire up and stay running despite airflow stuck open?????
IM HOPING YOU GUYS COULD WEIGHT IN WITH SOME ADVICE????
Now if I try to get cutting i can get a momentary arc and a quick plasma spurt for a millisecond but it wont maintain a plasma to cut, just cuts out.
Now the machine sequence says turn it on, then press the RUN/SET switch to SET and air will flow whilst you set regulator PSI. Then switch back to RUN and air should stop. Well mine doesnt, it just blows air constantly.
Now I know this points straight away towards a faulty air pressure switch, ive shown some pics of it and ive done some basic tests of it with machine off, there is no continuity thru it with my meter, which i thought i would get if this switch is stuck engaged.
Ive you yet tested the cutoff solenoid as i havent got a 24-60dcv source to do so, but i will source a couple of car batteries monday and parrallel them to get my 24vdc to test it opening/closing.
Also regarding the presure switch itself I intend on putting it back in the machine and tunring the machine on to see if it activates with the machine power, if it does then god knows where my pcb problem may be. Im hoping the switch is fine and this is just a problem solenoid, but the solenoid is showing resistance at 14.9 on my meter when meter is set to 200ohm range. Im guessing this is showing that its fine coil wise, but looking at the state of the corrosion within the inside of the pipes it couold be that the solenoid is stuck open with corrosion. BUT!!!! surely constant air flowing shouldnt be the cause of this millisecond arc from the torch when i pull the trigger... Surely the arc would fire up and stay running despite airflow stuck open?????
IM HOPING YOU GUYS COULD WEIGHT IN WITH SOME ADVICE????