Miller Electric 300 P manual Process/Contactor Switch Settings

6-3. Process/Contactor Switch

11 Process/Contactor Switch

Y Weld output terminals are ener- gized when Process/Contactor switch is in a Weld Terminals Al- ways On position and the engine is running.

Use switch to select weld process and weld output on/off control (see table be- low).

Place switch in Remote On/Off Switch Required positions to turn weld output on and off with a device connected to the Remote 14 receptacle.

Place switch in Weld Terminals Always On positions for weld output to be on whenever the engine is running.

Use Stick mode for air carbon arc (CAC-A) cutting and gouging.

When switch is in Stick mode, select one of four arc drive (dig) settings to provide additional amperage during low voltage (short arc length) conditions and prevent “sticking” electrodes. Turn control from A to D to increase arc drive (dig) from min to max.

Use the Lift-Arc TIG mode for TIG (GTAW) welding using the Lift-Arc TIG starting procedure (see Section 6-4).

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	Process/Contactor Switch Settings
Switch Setting	Process	Output On/Off Control	Engine Auto Idle (Optional)
Remote On/Off Switch Re-	GTAW With HF Unit, Pulsing
quired −TIG HF Required Or		At Remote 14 Receptacle	Active
	Device, Or Remote Control
Scratch Start
Remote On/Off Switch	Stick (SMAW) With Remote On/Off	At Remote 14 Receptacle	Active
Required − Stick
Remote On/Off Switch	MIG (GMAW)
Required − CV Feeder		At Remote 14 Receptacle	Active
	w/Constant Speed Feeder
Using Remote
Weld Terminals Always On −	MIG (GMAW)	Electrode Hot	Active
Wire	w/Voltage Sensing Feeder
Weld Terminals Always On −	Stick (SMAW),
	Air Carbon Arc (CAC-A) Cutting	Electrode Hot	Active
Stick
	And Gouging
Weld Terminals Always On −	TIG Lift-Arc (GTAW)	Electrode Hot	Active
TIG Lift-Arc

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