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THEORY OF OPERATION | ||
| FIGURE E.4 – OPTIONAL CIRCUITS. |
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ELECTRODE INPUT CABLE
TO WORK
SENSING LEAD
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| OPTIONAL |
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| CONTACTOR |
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| CONDUCTOR | GUN CABLE | |
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| BLOCK |
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COLD |
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| GUN |
| OPTIONAL | O | HALL | TRIGGER | |
INCH |
| T | CONNECTOR | ||
SWITCH | CONTACTOR | O | EFFECT |
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| BOARD | R | MODULE |
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P |
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O S |
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L W |
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| ARMATURE VOLTAGE |
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A I | VOLT |
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R T |
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I C | METER | CONTROL | RPM FEEDBACK |
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T H |
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Y |
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WIRE FEED |
| RANGE |
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| SWITCH |
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MODE SWITCH |
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| WIRE SPEED |
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| CONTROL |
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| SOLENOID | GAS |
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| PC BOARD | SOLENOID |
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| EARLY MODELS ONLY - LATER MODELS HAVE CIRCUITRY |
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| INCLUDED ON CONTROL BOARD |
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OPTIONAL CIRCUITS
CONTACTOR
The contactor, contactor PC board, and cold inch switch are commonly incorporated in the
GAS SOLENOID
Early Models Only (Below 10500)
The gas solenoid feature permits the
Later Models Only (Above 10500)
The solenoid PC board circuitry has been added to the Control board and the solenoid PC board has been eliminated.
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LATER MODELS
Codes above 11144 have the Contactor circuitry added to the Control Board and the Contactor PC Board has been eliminated. Older codes that have been upgraded to the newew PControl Board may have had the Contactor PC Board removed
NOTE: Unshaded areas of block logic diagrams are the subject of discussion.
