Problem with Wire feed unit on my RA-320 DC

[SuperStar 13]

I would like to see a wiring diagram for this unit to solve a problem. Could any one direct me to where i could get one? my problem is when i stop welding the main current and the gas flow dont switch off. I have changed the plug in relays which have failed prevoiusly which has not helped. The 24v DC reley operates when you start to weld but does not switch off unless you turn the welder off. I dont know what is keeping it on . Any suggestions?

 

[zzr1200]

If it has a 2T/4T switch, make sure it's in the 2T position.....

A picture of the control panel would help, no end...

 

[eddie49]

Hello and welcome to the Forum !

If it has a 2T/4T switch, make sure it's in the 2T position.....

A picture of the control panel would help, no end...

This Swedish auction advert has a picture of an RA-320 DC:

Svets Kemppi RA-320 DC inklusive Kemppi LISA-15

Buda på Svets Kemppi RA-320 DC inklusive Kemppi LISA-15 idag

www.bidpal.se

If you click on "Se hela annonsen" there are photos of the front panels of the power source and the LISA 15 WFU.

Which wirefeed unit are you using? Does it have burnback? If so, a fault in that circuit may be keeping the weld current and gas flow enabled.
Does weld current stop if you disconnect the multi-pin control cable from the wirefeed to the power source?

There is a user manual for various WFUs here, but no schematics:

https://resources.userdoc.kemppi.com/manuals/archive/classic/lisa-selectolisa-om-fi-sv-en-de.pdf

 

[zzr1200]

Page 20, explains 2t/4T.

Page 3. The 2T/4T switch is on the left hand side (blue circle), in the middle, of the wire feed unit, also check to see if the switch is actually switching with a meter