B-3
OPERATION
internal controls
1. Pressure Arm Adjustment Knob
2. Spool Retainer
3. Spindle Brake
4. Gun Bushing
5. Thumb Screw
6. Socket Head Cap Screw for Gun Bushing
7. Drive Hubs
8. Inlet Wire Guide
9. COLD FEED / GAS PURGE SWITCH
- Place the toggle
(momentary) switch in the UP position for cold feeding, or in
the DOWN position for gas purge. When cold feeding, the
wire drive will feed electrode but neither the feedplate nor the
gas solenoid will be energized. Adjust the speed of cold
feeding by rotating the WFS knob. Cold feeding, or "cold
inching" the electrode is useful for threading the electrode
through the gun. When gas purging, 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.
10. 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
welding to continue when the trigger is released for comfort
on long welds.
Place the toggle switch in the DOWN position for 2 Step
operation or in the UP 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 comfort 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 output turns off and the
wire feeder stops feeding wire.
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