Question about Welding Tools
Posted by Anonymous on
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Posted on Jan 02, 2017
Odd noises other than the normal sound of the spark gap working are often the result of dust and junk inside the case of your welder. That it also bogs down when it gets warmed up (fan comes on), also points to a need for some "annual maintenance" stuff being done.
Completely isolate the machine from the building power supply, pul the plug, open the circuit breaker, do whatever it is that makes the machine have no connection to any power.
Take off the covers with a 10mm or 3/8 inch socket (can't remember which)
Use a shop vac to **** out all of the dust and debris out of the machine. Low pressure (40 psi) air can sometimes be helpful to dislodge caked on dirt. Avoid any metal tools near the capacitor bank inside the welder.
Wipe off the fan blades.
Clean the spark gap electrodes by inserting and removing a matchbook cover, a business card, or a piece of white cardboard several times. Inspect the electrodes and adjust them according to the manual that came with the welder.
Check all of the power wiring connections for tightness by gently tugging on them. Look for signs of overheating on the power connections and on the internal connections to the welding terminals. Check the range switch for heating too.
With the cover still off, reconnect the power and turn the welder on. Look for obviously vibrating laminations on the main input transformer. If you see one buzzing back and forth, or if you notice lots of wear and tear on the varnish coating of the laminations, shut everything down and repair the loose laminations with some anti-fungal high voltage varnish.
Turn the welder off, disconnect the power, and put it all back together. Then turn the power back on and weld something, if htere is still a buzzing noise you'll need a Miller tech to solve the problem, you likely have a bad input transfirmer.
Posted on Jan 26, 2009
Hi, remove the machines cover with the machine unplugged then look for disconencted plugs etc within the machine. careful where you place your bare hands.
Posted on Oct 18, 2009
never heard of this as i always strike a arc ,its comes with experiance and you do not even know your doing it .But this could be a new idea that i havent come across on my old machine
Posted on Dec 10, 2011
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