| TROUBLESHOOTING & REPAIR | |
| TROUBLESHOOTING GUIDE | Observe Safety Guidelines |
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| detailed in the beginning of this manual. |
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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All the status lights begin to blink | 1. Make | sure | the | 1. | Perform | the | Primary Power | ||||
within 5 seconds of power up. |
| reconnected correctly for the |
| Board Resistance | Test and | ||||||
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| input voltage being applied. Be |
| Capacitor Voltage Test. | |||||||
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| sure to remove input power | 2. Perform the Input Rectifier | ||||||||
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| and wait at least one minute | |||||||||
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| Test. |
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| before changing the position |
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| of the input voltage range | 3. | The control board may be | |||||||
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| switch. |
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| faulty. Replace. |
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| 2. | If the machine is connected for | 4. | The primary power board may | |||||||
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| high input voltage, the input |
| be faulty. Replace. |
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| capacitors may need condition- |
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| ing. | See | Maintenance |
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| Section. |
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The machine powers up properly, | 1. Make sure the torch is connect- | 1. | Perform the Auxiliary Trans- | ||||||||
but there is no response when the |
| ed properly to the |
| former Test. |
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gun trigger is pulled. Only the |
| machine. |
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| 2. | Perform | the | Trigger Circuit | ||
power LED is lit. |
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2. Make sure the air supply is con- |
| Test. |
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| nected and operating properly. | 3. | Perform | the | Gas | Solenoid | ||||
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| 3. | Make sure the torch head con- |
| Test. |
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| sumable parts are in place and | 4. | Perform the Torch Continuity | |||||||
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| in good condition. | Replace if | ||||||||
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| and Solenoid Test. |
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| necessary. |
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| 5. | The control | board | may be | |
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| faulty. Replace. |
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| 6. | The output power board may | |||
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| be faulty. Perform the Output | |||
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| Board Resistance Test. | |||
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When the torch trigger is pulled, air | 1. Make | sure | the | torch consum- | 1. | Perform the Torch Continuity | |||||
begins to flow; but no pilot arc is |
| ables are in place and in good |
| and Solenoid Test. |
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established. |
| condition. | Replace if neces- | 2. | Perform | the | Low | Voltage | |||
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| sary. |
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| Circuit Test. |
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| 2. | Make | sure | the | air | pressure is | 3. The output board may be faulty. | ||||
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| set at 70 psi (448 kPa.) and the | |||||||||
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| Perform | the | Output Board | ||||||
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| flow rate is at 6 CFM. |
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| Resistance Test. |
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| 3. Make sure there are no kinks or | 4. | The control board may be | ||||||||
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| restrictions | for | air | flow in the | ||||||
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| faulty. Replace. |
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| torch cable. |
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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
