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Hold with toggle switch in the DOWN position to acti- vate Gas Purge and let the shielding gas flow. The gas solenoid valve will energize but neither the power source output nor the drive motor will be turned on. The Gas Purge switch is useful for setting the proper flow rate of shielding gas. Flow meters should always be adjusted while the shielding gas is flowing.
2 STEP - TRIGGER INTERLOCK SWITCH
The 2 Step - Trigger Interlock switch changes the function of the gun trigger. 2 Step trigger operation turns welding on and off in direct response to the trigger. Trigger Interlock operation allows weld- ing to continue when the trigger is released for comfort on long welds.
Place the toggle switch in the UP posi- tion for 2 Step operation or in the DOWN position for Trigger Interlock operation.
2 Step Trigger
2 Step trigger operation is the most common. When the gun trigger is pulled, the welding power source energizes the electrode output and the wire feeder feeds wire for welding. The power source and wire feeder continue welding until the trigger is released.
Trigger Interlock
Trigger Interlock operation provides for operator com- fort when making long welds. When the gun trigger is first pulled, the welding power source energizes the output and the wire feeder feeds wire for welding. The gun trigger is then released while the weld is made. To stop welding, the gun trigger is pulled again, and when it is released the welding power source out- put turns off and the wire feeder stops feeding wire.
CAUTION
If the arc goes out while welding with trigger inter- lock operation, the electrode output from the welding power source remains energized and the wire feeder will continue to feed wire until the gun trigger is again pulled and then released.
FLOW METER
The flowmeter shows the flow rate of shielding gas and has a valve to adjust the flow. The flow meter is calibrated for CO2, Ar, and CO2/Ar blends. The mid- dle of the ball indicates the flow rate of shielding gas.
Adjust the flow rate by turning the valve at the bottom of the meter. Most weld procedures require
SCFH | Liter/Min. |
10 | 4.7 |
20 | 9.4 |
30 | 14.2 |
40 | 18.9 |
50 | 23.6 |
60 | 28.3 |
70 | 33.1 |
80 | 37.8 |
SPINDLE BRAKE
Adjust the spindle brake tension to allow the spool to spin freely, yet have enough resistance for little or no overrun when wire feeding is stopped.
SHIELDING GAS CONNECTION
WARNING
CYLINDER may explode if damaged.
• Keep cylinder upright and chained to support.
•Keep cylinder away from areas where it may be damaged.
•Never lift welder with cylinder attached.
•Never allow welding electrode to touch cylinder.
•Keep cylinder away from welding or other live electrical circuits.
WARNING
•BUILD UP OF SHIELDING GAS MAY HARM HEALTH OR KILL.
•Shut off shielding gas supply when not in use.
•See American National Standard
Customer must provide a cylinder of shielding gas, a pressure regulator, a flow control valve and a hose from the flow valve to the gas inlet fitting of the
Connect a supply hose from the gas cylinder flow valve outlet to the
