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F-14 TROUBLESHOOTING & REPAIRF-14
DC EXCITER TEST (CONTINUED)
FIGURE F.1 – 120VDC RECEPTACLE
SERIES COIL CONNECTION
POINT (NEGATIVE)
POSITIVE
TEST PROCEDURE | 2. Start the engine and put the idler switch in the HIGH | ||||
| 1. Turn off the engine and remove all external loads | ||||
| to the welder terminals and auxiliary receptacle. | idle position. | |||
| 3. Using the volt/ohmmeter, carefully check the DC | ||||
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| WARNING | polarity. The large slot of the receptacle is negative. | |
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| voltage at the 120V receptacle. (Observe proper |
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| MOVING PARTS can injure. | See Figure F.1.) Normal voltage is 125 - 135VDC, | |
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| no load, with the engine at the high idle speed of | ||
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| • Remove guards only when necessary | 1600 RPM. If the voltage is normal, the DC exciter | |
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| to perform service, and replace them | is functioning correctly. If the voltage is low or not | |
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| when the service requiring their | present, proceed to the next step. | |
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| removal is complete. |
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• Keep hands, hair, clothing and tools away from V- |
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| belts, gears, fans, and all other moving parts when |
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| starting, operating, or repairing equipment. |
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• If fan guards are missing from a machine, obtain |
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| replacements from a Lincoln Distributor. (See Parts |
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| List.) Always use greatest care when working near |
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| moving parts. |
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