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6-6. Low Open-Circuit Voltage (VRD) Switch Mode
6-7.
Stick Start Procedure − Scratch Start Technique
.
Complete Parts List available at www.MillerWelds.com
1
1
3
1
The VRD switch can be set for low
open-circuit voltage operation in
Stick mode. When the unit is con-
figured for low open-circuit voltage
operation only a low sensing
voltage (approximately 15 volts
DC) is present between the elec-
trode and workpiece prior to the
electrode touching the workpiece.
Unit is shipped from the factory with
ON
the switch in the On position.
OFF
With Stick selected, start arc as
follows:
1
2
3
Drag electrode across workpiece like
striking a match; lift electrode slightly
after touching work. If arc goes out
electrode was lifted to high. If
electrode sticks to workpiece, use a
quick twist to free it.
VRD
open-circuit voltage is not present
before electrode touches workpiece;
only a low sensing voltage is present
2
between electrode and workpiece.
For optimal starting performance, a
good clean contact must be made be-
tween the electrode and workpiece.
Voltage Reducing Device
(VRD) Switch
907712
Electrode
Workpiece
Arc
Turned
On:
Normal
OM-275624 Page 37
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