Cooling Coils

[TxBoy]

I was watching an older VHS welding video and the narrator mentioned that in order for the coils to cool properly after welding would be to leave the welder power switch ON.

Is there a real difference by leaving the welder power switch ON or OFF after welding when it comes to taking extra care precautions for the coils?

[Zrexxer]

Umm, yes. If you turn the machine off the fan is no longer pulling cool air across the components.

[Dave F.]

Tx Boy, I would say it probably is a good Ideal. Several post back in the earier part of the month. I posted about shorted diode in a Lincoln 225 A.C./D.C welder, any how The service shop guy who I got the diode from, told me I didn't allow the welder to cool long enought before turning off the welder. So I going to allow mine to run/cool down alittle longer Dave F.

[Blacksmith]

Maybe I'm overly cautious, but I always leave mine running for 5 minutes or so after the last arc. Considering that it only draws about 3 amps this way, that's about 40 watts of power; way less than a penny at my electric rates. If I save the cheapest component from a premature death, I'm probably way ahead!

[Brianstick]

If you turn the machine off it won't be able to finish it's cycle. Remember, first you weld, then you let the machine idle for the remainder of the ten minute cycle period. As stated, the fan cools the welder and prepares the power supply for the next ten minutes of cycling.

[Mr Meck]

Unless of course you have a 100% duty cycle machine. In all cases of how long to leave the welder running after welding consult your Owners Manual. IT will tell you. In my case its 4 minutes as Per the Owners Manual. If none mentioned then none needed. Consult your manual and let there be no guessing anymore.