Tweco VA 4000S Ultra-Feed - Manual (Page 27)

ULTRAFEED VA 4000S
Manual No. 0-5135 4-1 OPERATION
S S S
Art # A-09218
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Figure 4-1: Front Panel Controls and Connections
6. ARC VOLTAGE CONTROL: This knob controls arc
voltage or pulse frequency from the power source.
The arc voltage (or pulse reference) control can be
adjusted during setup or actual welding.
7. FUNCTION TIMERS: These knobs provide timed
control over preflow/postflow gas, wire burnback
distance and spot weld time.
8. 2 STEP / 4 STEP SWITCH: This switch selects 2 Step
or 4 Step mode of operation.
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SECTION 4:
OPERATION
4.01 Front Panel
1. FAULT INDICATOR: This LED indicates a fault condition
exists. If it is flashing, a ground fault has occurred. If
it is on continuously, the motor protection circuit has
activated.
2. WIRE FEED SPEED (WFS) CONTROL:
This knob controls wire feed speed. The wire feed
speed control knob can be adjusted during setup or
actual welding.
3. WFS/AMP METER: This meter displays the wire feed
speed or amperage.
4. WIRE SPEED FORCE METER
5. VOLT METER: Displays possible restriction in liner or
tips.