Miller Electric D-74D, Owner'S Manual

Page: 22 / 40

OM-1500-6 Page 18
SECTION 6 − OPERATION
6-1. Power Switch
1 Power Switch
1
Ref. 803 065
1 Left/Right Select Switch
Pressing the Left/Right Select
switch allows the operator to
choose which side of the unit’s con-
trols will operate.
6-2. Left/Right Select Switch
1
Ref. 803 048
6-3. Jog/Purge
Pressing the Jog/Purge switch allows the op-
erator to jog wire without energizing the weld
power or gas valve circuit.
•
The unit also provides the ability to jog the
wire feeder by means of the gun trigger,
however, the contactor is energized for 3
seconds.
• If the welding arc does not initiate in 3 sec-
onds after the gun trigger is activated, the
unit will perform a jog operation for a maxi-
mum of two minutes. If the gun trigger is still
activated after two minutes, the jog opera-
tion is terminated to prevent complete des-
pooling of the wire, as in the case of a dam-
aged gun.
• Jog speed can be adjusted with the Wire
Speed control when the unit is jogging
wire. If equipped with meters, the unit dis-
plays jog speed while the unit is being
jogged.
•
Pressing the Jog/Purge button also allows
the operator to purge gas lines before
welding and to preset gas pressure at the
regulator.
1
Ref. 803 048
2
1 Jog/Purge Push Buttons
2 Wire Speed Controls
3 Gun Trigger Receptacles
3