OM-257 798 Page 28
6-3. 30 Points Of Mechanics In MIG Welding
30 Pts MIG
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2014-09
Primary Power
S
Check primary power connection at line disconnect switch or receptacle and/or cord plug.
S
Check primary power connection at welding power source.
Secondary Power
S
Check secondary weld output connections at welding power source.
S
Inspect condition and routing of positive weld cable to wire drive motor.
S
Check connection of positive weld cable to wire drive motor.
S
Inspect condition and routing of negative weld cable to fixture.
S
Check connection of negative weld cable to fixture.
S
Inspect condition of any rotary grounds, grounding shoes or other auxiliary grounds.
S
Check installation, routing and condition of welding gun.
Shielding Gas
S
Check gas hose connection to shielding gas supply regulator.
S
Check shielding gas flow rate.
S
Check gas hose routing.
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Check gas hose connection at wire drive housing.
S
Check gun connection at wire drive and be sure O
−
rings seal at drive housing.
S
Check condition of gas diffuser.
S
Check condition of nozzle.
S
Check O-ring for proper sealing at nozzle.
Welding Wire
S
Inspect condition of de-reeler. Check for wear at quick-connect coupling and replace if necessary.
S
Check placement of payoff pack or drum for smooth feed path.
S
Inspect condition and routing of input conduit.
S
Check installation of quick-connect coupling at rear of wire drive so that it does not contact drive rolls. Check for wear and replace if necessary.
S
Check drive rolls and replace if worn.
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Check for drive roll tension setting.
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Check intermediate guide for proper size to match wire size and replace if worn.
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Check for proper length of liner at both ends and be sure it is cut without burrs.
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Check liner for proper size to match wire size.
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Check liner for wear and clean out to prevent plugging.
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Check contact tip for proper size to match wire size.
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Check contact tip for wear and change at regular intervals.
S
Check contact tip for a tight fit and secure installation at gun.
Summary of Contents for Continuum 350
Page 17: ...OM 257 798 Page 13 Notes...
Page 27: ...OM 257 798 Page 23 Notes...
Page 45: ...OM 257 798 Page 41 Notes...
Page 47: ...OM 257 798 Page 43 264 238 B...
Page 48: ...OM 257 798 Page 44 Figure 10 2 Circuit Diagram For Continuum 350 Model Page 2 of 2...
Page 49: ...OM 257 798 Page 45 264 238 B...
Page 50: ...OM 257 798 Page 46 Figure 10 3 Circuit Diagram For Contiuum 500 Model Page 1 of 2...
Page 51: ...OM 257 798 Page 47 265 841 B...
Page 52: ...OM 257 798 Page 48 Figure 10 4 Circuit Diagram For Continuum 500 Model Page 2 of 2...
Page 53: ...OM 257 798 Page 49 265 841 B...
Page 62: ...OM 257 798 Page 58 Notes...