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what causes this on a water cooled torch...

Posted: Sun Feb 08, 2015 11:30 pm
by Rick_H
Last week the hose blew on our Miller Snycrowave 350LX, we swapped the torxh out for another Weldmark/CK 20/series torch....same thing happened tonight to the same guy...lol

Re: what causes this on a water cooled torch...

Posted: Sun Feb 08, 2015 11:34 pm
by Oscar
Hard to tell, but is that the hose that is also the power lead, or is it just the water return hose with a copper crimp that I'm seeing?

Re: what causes this on a water cooled torch...

Posted: Sun Feb 08, 2015 11:56 pm
by weldin mike 27
Using deionised water?

Re: what causes this on a water cooled torch...

Posted: Mon Feb 09, 2015 12:22 am
by Braehill
Rick,
Last winter I cooked a hose on a fairly new torch and what I found was my return line to the water cooler had froze and it boiled the water in the torch but never made it to the water cooler. If your shop is not heated that might be something to look at.

Len

Re: what causes this on a water cooled torch...

Posted: Mon Feb 09, 2015 12:28 am
by Rick_H
Heated shop, dionzied water with Miller coolant.

Re: what causes this on a water cooled torch...

Posted: Mon Feb 09, 2015 12:36 am
by Braehill
Rick,
Can you see if you have flow? Maybe a restriction in the return system? Other than that, not a clue.

Len

Re: what causes this on a water cooled torch...

Posted: Mon Feb 09, 2015 2:57 am
by Rick_H
Braehill wrote:Rick,
Can you see if you have flow? Maybe a restriction in the return system? Other than that, not a clue.

Len
I'll have to check tomorrow I was knee deep in a big sanitary pipe job and didn't have time to mess with it this evening.

Re: what causes this on a water cooled torch...

Posted: Mon Feb 09, 2015 9:18 pm
by Otto Nobedder
Rick_H,

The deformation at the "burst" looks like melt, rather than simple "blowout". Note the swollen lip of the poly at the opening. This suggests severe local heating.

You must have a flow restriction of some sort, or, somehow (and this makes NO sense), a short path for the HF at this point.

Steve S

Re: what causes this on a water cooled torch...

Posted: Mon Feb 09, 2015 10:23 pm
by Rick_H
Otto Nobedder wrote:Rick_H,

The deformation at the "burst" looks like melt, rather than simple "blowout". Note the swollen lip of the poly at the opening. This suggests severe local heating.

You must have a flow restriction of some sort, or, somehow (and this makes NO sense), a short path for the HF at this point.

Steve S

Agreed...definitely melted the hose,

Re: what causes this on a water cooled torch...

Posted: Tue Feb 10, 2015 10:40 pm
by Rick_H
I had time to check tonight, getting great flow through the torch and cable, so if I do have a blockage it is inside the unit.