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TROUBLESHOOTING & REPAIR |
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Observe Safety Guidelines |
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| TROUBLESHOOTING GUIDE | ||||
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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| ENGINE PROBLEMS |
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Engine idles down to low idle but | 1. Remove any external load on | 1. The engine low idle RPM may | |||||
will not stay at low idle. | the welder terminals or auxiliary | be | set | too low. | Perform the | ||
| power receptacles. | Engine | Throttle | Adjustment | |||
| 2. The engine low idle RPM may | Test. |
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| be set too low. | Contact your | 2. With the idler control switch in | ||||
| local Lincoln | Electric Field | the “AUTO” position and all | ||||
| Service Facility. |
| external loads removed, check | ||||
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| for 12VDC at leads #208 and | ||||
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| #209. See Wiring Diagram. If | ||||
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| the 12VDC is present and the | ||||
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| solenoid does not stay activat- | ||||
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| ed, the solenoid may be faulty. | ||||
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| Replace. |
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Engine will not go to high idle when | 1. Check work and electrode | 1. Locate plug J2 on the control | |||||
attempting to weld or when the | cables for loose or faulty con- | board. | With a load on the | ||||
auxiliary power is loaded. Welding | nections. |
| machine, measure the AC volt- | ||||
output and auxiliary power output | 2. The mechanical linkage be- | age across the two leads in plug | |||||
is normal when idler control switch | J2. | Normal is 1.0 VAC mini- | |||||
tween the solenoid and engine | |||||||
is in the “HIGH” position. | mum. | If the correct voltage is | |||||
may be stuck. |
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| present, the idler P.C. board | |||||
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| may be faulty. Replace. | ||||
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| 2. If the correct voltage is NOT | ||||
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| present at Plug J2 leads, check | ||||
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| the continuity of the leads from | ||||
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| the current transformer to plug | ||||
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| J2. | See Wiring Diagram. | |||
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| 3. The current transformer may be | ||||
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| faulty. Replace. |
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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
WELDANPOWER 125
