Miller Electric S-74D - Manual (Page 21)

OM-1500-10 Page 17
SECTION 6 − OPERATION
6-1. Power Switch
1 Power Switch
1
802 827-A
6-2. Jog/Purge
1
802 828-A
2
1 Jog/Purge Push Button
2 Wire Speed Control
3 Gun Trigger Receptacle
Pressing the Jog/Purge switch al-
lows the operator to jog wire without
energizing the weld power or gas
valve circuit.
• The wire feeder can also be
jogged by using the gun trigger.
However, the contactor is ener-
gized for 3 seconds.
• If the welding arc does not initiate
in 3 seconds after the gun trigger
is activated the unit will perform a
jog operation for a maximum of
two minutes. If the gun trigger is
still activated after two minutes,
the jog operation is terminated to
prevent complete despooling 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 displays 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 regu-
lator.
3