Miller Electric OM-1500-4 - Manual (Page 20)

OM-1500-4 Page 16
SECTION 4 – OPERATION
4-1. Power Switch
1 Power Switch
1
802 827-A
4-2. 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.
• Despooling protection is not available if
current detect override is enabled (when
DIP switch S1-1 on motor board PC1 is in
On position as shown in Section 3-7).
•
Jog speed can be adjusted with the Wire
Speed control when the unit is jogging
wire. If equipped with optional meters, the
unit displays jog speed while the unit is be-
ing 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
802 828-A
2
1 Jog/Purge Push Button
2 Wire Speed Control
3 Gun Trigger Receptacle
3