Re: [MW:5986] Problem wk\hile root run

change the purging to 6-8 ltr.

reduce the root gap 

Thanks & Regards
Muhammed Ibrahim PK

On 15 July 2010 10:27, waman nilesh <wamannp@gmail.com> wrote:

I have problem while doing root run the weld get black from backside as we have maintain the backing 10 lpm & Shielding 12 lpm as per WPS. 

Can anybody tell me the reason & how to avid it.

Nilesh 

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