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Return to Master TOC
Return to Master TOC
Return to Master TOC
TROUBLESHOOTING & REPAIR |
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TROUBLESHOOTING GUIDE |
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| Observe Safety Guidelines | ||||||
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| detailed in the beginning of this manual. | ||||||
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PROBLEMS | POSSIBLE AREAS OF |
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(SYMPTOMS) | MISADJUSTMENT(S) |
| COURSE OF ACTION |
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| CUTTING PROBLEMS |
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The arc starts but sputters | 1. | Make sure the torch con- | 1. |
| The | torch | and | cable | ||||||||
badly. | (If cutting expanded |
| sumables are tight and are in |
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| assembly could be | faulty. | |||||||||
metal, condition may be nor- |
| good condition. | Replace if |
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| Perform | the Torch, | Torch | ||||||||
mal, see operation section.) |
| necessary. |
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| Cable |
| Assembly, | and | |||||
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| 2. | Check the air supply for oil or |
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| Internal Trigger and Safety | |||||||||
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| Circuit Tests. |
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| water | contamination. | If |
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| there is oil or water present | 2. |
| Check | Pilot Resistor R2. | ||||||||
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| the air supply must be fil- |
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| See Wiring Diagram |
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| tered | or | the | machine |
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| switched | to | nitrogen | or | 3. |
| The Control Board could be | ||||||
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| bottled air. |
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| faulty. Replace. |
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| 3. | Make sure air pressure is |
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| Check “Jump Start Diode” - | ||||||||
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| 60 to 65 PSI. |
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| see wiring diagram. |
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| 4. | Check spark gap setting - |
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| .060” - clean if necessary. |
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The | "MALFUNCTION" or | 1. | This is an overcurrent con- | 1. |
| Perform | the | Torch, | ||||||||
"FAULT" LED starts blinking |
| dition caused by a surge of |
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| Torch |
| Cable | Assembly, | ||||||||
during cutting or gouging. |
| current the machine is not |
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| and Internal | Trigger and | ||||||||||
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| designed |
| to | handle. |
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| Safety Circuit Tests. |
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| Release | the | torch trigger |
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| and resume | cutting | or | 2. |
| Perform | the | Transistor | |||||
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| gouging. |
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| Module Test. |
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| 2. | Check | torch | consumables | 3. |
| Perform the Main Trans- | |||||||
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| for wear - replace if neces- |
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| former Test. |
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| sary. |
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| 4. |
| The Control Board could be | ||||
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| faulty. Replace. |
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Pilot arc is OK but cutting arc | 1. | Make sure work cable and | 1. |
| Perform Transistor Module | |||||||||||
will not establish. |
| clamp are secure. |
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| Test. |
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| 2. | Clean any painted or heavily | 2. |
| Perform Power Board Test. | |||||||||
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| corroded work surfaces. |
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| CAUTION |
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If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed call