Thermal Arc C/W VFE 4C HS III, Operation Manual

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A15. Wirefeeder Control Socket outlet This Female 7 pin receptacle is used to connect
a Wirefeeder to the welding power Source circuitry: To make connections, align keyway,
insert plug, and rotate threaded collar fully clockwise. The socket information is included in
the event the supplied cable is not suitable and it is necessary to rewire a plug.
Pin 1 - 24Vac supply to WFU
Pin 2 - 0Vac
Pin 3 - Contactor return
Pin 4 - Thermal overload Signal
Pin 5 - Cooling error signal
Pin 6 - Welding volt age +
Pin 7 - Ground connection
A16. Wirefeeder Control Socket inlet , This male 7 pin receptacle is used to connect
a Wirefeeder from the welding power source circuitly.
A17. Gas inlet The Gas Inlet connections, a quick fit connector supplied via the gas
hose from the interconnecting lead.
A18. Interconnecting lead Clamp WFU
A19. Interconnecting lead Clamp Power Source
A20. Interconnecting lead inlet WFU
A21. Air Cooled Interconnecting Lead
A22. Interconnecting lead outlet Power Source
A23. Thermal Overload Indicator An indicator to inform the operator if the power
source overheats.
A24. Gas Heater Outlet – An o ption that is not installed on this unit.
WARNING
Loose welding terminal connections can cause overheating and result in the male plug
being fused in the bayonet terminal.
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