Hobart Welding Products 300 DC, 300 AC manual Operation, Controls

SECTION 3 – OPERATION

3-1. Controls

1 2 3

4

5

8 6 7 Ref. SC-168 810-B

1 Arc Force (Dig) Control

For SMAW, control increases short-circuit amperage which allows the operator to use a very short arc length without sticking the electrode.

Set control at 0 for GTAW. When set at 0 (zero), short circuit amperage at low arc volt- age is the same as normal welding amper- age.

2Amperage/Voltage Adjustment Control For AC or DC CC welding, such as GTAW

and SMAW welding, adjust control accord- ing to amperage (A) scale. For GMAW and FCAW welding, adjust control according to voltage (V) scale.

3Power Switch

4Output Selector Switch

5Amperage/Voltage Control Switch

Switch selects front panel or remote amper- age/voltage control.

For remote amperage/voltage control, front panel control setting is the maximum output

available. For example: If front panel control is set to 200 A, the range available at the remote amperage control is 0 to 200 A.

6 Output (Contactor) Switch

Switch selects front panel or remote output control.

YWeld output terminals are energized when Output (Contactor) switch is On and Power is On.

7Ammeter (Optional)

8Voltmeter (Optional)

OM-318 Page 15