9-17. Troubleshooting Guide For Semiautomatic Welding Equipment
Problem | Probable Cause | Remedy | |
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Wire feed motor operates, but | Too little pressure on wire feed rolls. | Increase pressure setting on wire feed rolls. | |
wire does not feed. |
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Incorrect wire feed rolls. | Check size stamped on wire feed rolls, replace to match | ||
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| wire size and type if necessary. | |
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| Wire spool brake pressure too high. | Decrease brake pressure on wire spool. | |
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| Restriction in the gun and/or assembly. | Check and replace cable, gun, and contact tip if | |
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| damaged. Check size of contact tip and cable liner, | |
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| replace if necessary. | |
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Wire curling up in front of the | Too much pressure on wire feed rolls. | Decrease pressure setting on wire feed rolls. | |
wire feed rolls (bird nesting). |
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Incorrect cable liner or gun contact tip size. | Check size of contact tip and check cable liner length | ||
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| and diameter, replace if necessary. | |
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| Gun end not inserted into drive housing properly. | Loosen gun securing bolt in drive housing and push gun | |
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| end into housing just enough so it does not touch wire | |
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| feed rolls. | |
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| Dirty or damaged (kinked) liner. | Replace liner. | |
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Wire feeds, but no gas flows. | Gas cylinder empty. | Replace empty gas cylinder. | |
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| Gas nozzle plugged. | Clean or replace gas nozzle. | |
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| Gas cylinder valve not open or flowmeter not adjusted. | Open gas valve at cylinder and adjust flow rate. | |
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| Restriction in gas line. | Check gas hose between flowmeter and wire feeder, and | |
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| gas hose in gun and cable assembly. | |
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| Loose or broken wires to gas solenoid. | Have Factory Authorized Service Agent repair wiring. | |
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| Gas solenoid valve not operating. | Have Factory Authorized Service Agent replace gas | |
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| solenoid valve. | |
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| Incorrect primary voltage connected to welding power | Check primary voltage and relink welding power source | |
| source. | for correct voltage. | |
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Welding arc not stable. | Wire slipping in drive rolls. | Adjust pressure setting on wire feed rolls. Replace worn | |
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| drive rolls if necessary. | |
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| Wrong size gun liner or contact tip. | Match liner and contact tip to wire size and type. | |
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| Incorrect voltage setting for selected wire feed speed on | Readjust welding parameters. | |
| welding power source. |
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| Loose connections at the gun weld cable or work cable. | Check and tighten all connections. | |
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| Gun in poor shape or loose connection inside gun. | Repair or replace gun as necessary. | |
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