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| TROUBLESHOOTING & REPAIR |
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| Observe Safety Guidelines |
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| TROUBLESHOOTING GUIDE | ||
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| detailed in the beginning of this manual. |
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| PROBLEMS | POSSIBLE AREAS OF | RECOMMENDED | |||
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| (SYMPTOMS) | MISADJUSTMENT(S) | COURSE OF ACTION | |||
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| FUNCTION PROBLEMS |
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| The air begins to flow when the | 1. | Make sure the air pressure is | 1. Perform the Torch Continuity | ||
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| torch trigger is pulled. There is a |
| set at 70 psi (448 kPa.) and the |
| and Solenoid Test. | |
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| very brief pilot arc. (Normal is 3 |
| flow rate is at 6 CFM. | 2. The output board may be faulty. | ||
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| seconds.) The sequence is repeat- |
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| 2. | Make sure the torch consum- |
| Replace. | ||
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| ed with subsequent trigger pulls. |
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| ables are in place and in good |
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| 3. | The control board may be | ||
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| condition. | |||
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| faulty. Replace. | ||
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| 3. | Make sure the air flow is not |
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| restricted. |
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| 4. | Make sure the air hose and |
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| screen are not clogged. |
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| The cutting arc starts but sputters | 1. | Make sure the operating proce- | 1. Perform the Torch Continuity | ||
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| badly. |
| dure is correct for the process. |
| and Solenoid Test. | |
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| See the Operation section of | 2. The output board may be faulty. | ||
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| this manual. | |||
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| Replace. | ||
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| 2. | Make sure the work clamp is | 3. | The control board may be | |
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| connected tightly to the work- | |||
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| faulty. Replace. | ||
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| piece. |
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| 3. | Make sure the torch consum- |
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| ables are in place and in good |
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| condition. |
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| 4. | Make sure the air supply is not |
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| contaminated with oil or exces- |
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| sive water. |
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| 5. | Make sure the air pressure is |
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| set at 70 psi (448 kPa.) and the |
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| flow rate is at 6 CFM. |
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| 6. | Make sure the air hose and |
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| screen are not clogged. |
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| Nuisance safety trips | 1. | See Safety Status Indicator in | 1. | The torch may be faulty. Check | |
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| the operation section. |
| or replace. | |
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| 2. | Make sure the correct nozzles | 2. The control board may be | ||
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| are being used for the material |
| faulty. See Torch Continuity | |
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| thickness. See Operation |
| and Solenoid Test. | |
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| Section. |
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| 3. | Make sure the output control is |
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| set correctly for the process. |
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CAUTION
If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con- tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call
