help needed again

[Milton]

While fillet welding 18 gauge to 1/8' steel , I am getting a yellow flashing , that is too bright to see the weld . Material is 18 cold rolled to 1/8 hot rolled . Hot rolled was sanded and wiped with non chlorinated brake cleaner . The welder is a 300 Dynasty DX with knobs . Gas flow at 17.5 CFM . I have seen this occasionally before , but this piece seems to be unweldable .

[Milton]

solved

The problem was the automatic helmet sensor not seeing arc and the bright yellow is the normal welding color . Repositioning the assembly solved mystery .

[H80N]

CFM vs CFH

While fillet welding 18 gauge to 1/8' steel , I am getting a yellow flashing , that is too bright to see the weld . Material is 18 cold rolled to 1/8 hot rolled . Hot rolled was sanded and wiped with non chlorinated brake cleaner . The welder is a 300 Dynasty DX with knobs . Gas flow at 17.5 CFM . I have seen this occasionally before , but this piece seems to be unweldable .

Am Curious...

what brand and model helmet...?? might need new batteries..

BTW... Argon flow would be in CFH (Cubic Feet per Hour)... 17.5 CFM would be a hurricane at the torch... and you would be trading gas bottles a couple times an hour..

[Milton]

Helmet

Helmet is a Hobart 770098 . I am guessing 12 years old . Never had a new battery .

[H80N]

Helmet is a Hobart 770098 . I am guessing 10 years old . Never had a new battery .

flaky batteries can drive you crazy..

Am betting it takes a pair of Panasonic CR2450 button cells..

http://store.cyberweld.com/reliba.html

Here is a thread on helmet batts.. and probs

http://www.millerwelds.com/resources...ghlight=CR2450

[Milton]

helmet battery

Does anyone have experience replacing the battery or batteries in the Hobart 770098 helmet . It appears to be a sealed unit .

[H80N]

Does anyone have experience replacing the battery or batteries in the Hobart 770098 helmet . It appears to be a sealed unit .

I have done my Miller BWE a few times..

the battery tray is not readily apparent the Hobart may be similar..

[Milton]

helmet battery

Just checked again , no sign of a drawer , a two piece case , snapped together or glued .

[H80N]

Just checked again , no sign of a drawer , a two piece case , snapped together or glued .

Have you checked the Hobart site for your helmet??

is it one of these?? have been unable to cross it by the "770098" number

http://www.hobartwelders.com/om/6digit/o261661b_hob.pdf

http://www.hobartwelders.com/om/6digit/o245869f_hob.pdf

http://www.hobartwelders.com/om/6digit/o257076c_hob.pdf

They all seem to use just one battery that is behind a threaded door..
like a miniature manhole cover..

There are more manuals here

http://www.hobartwelders.com/service/owners-manuals/

[nfinch86]

Solar

Maybe it's a Solar Welding Shield ?

Norm