Miller Electric XR A - Manual (Page 30)

OM-1581 Page 26
5-7. Spot Controls (Optional)
1 Spot/Continuous Switch
Use switch to select either an un-
timed continuous weld cycle or a
timed spot weld cycle. Both weld
cycles consist of the following
steps: run-in, weld (untimed or spot
time), and burnback.
2
Time Range Switch
Use switch to select spot weld time
range.
3
Spot Time Control
Use control to set spot weld time.
Welding wire feeds at speed se-
lected on the gun Wire Speed Con-
trol. Spot time starts at arc initiation.
The scale around the control is
marked in seconds.
4
Burnback Time Control
Use control to adjust time (up to 0.25
seconds) that the welding wire is
electrically energized after the wire
stops feeding.
If welding wire sticks in the weld
puddle, increase burnback time. If
wire burns back into the gun contact
tip, decrease burnback time.
The scale around the control is
marked in fractions of a second.
1 2
3
4
5-8. Remote Voltage Control (Optional)
1 Voltage Control
Use control to adjust arc voltage at
the wire feeder.
The scale around the control is
marked in percent.
1
5-9. Power Switch
1 Power Switch
Use switch to turn unit On and Off.
1