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Miller D-74 MPa Plus - Section 6: Operation; Power Switch and Jog;Purge Switch

Miller D-74 MPa Plus
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OM-243 347 Page 20
SECTION 6 OPERATION
6-1. Power Switch
1 Power Switch
1
Ref. 245 239-A
6-2. Jog/Purge Switch
Ref. 245 239-A
1 Jog/Purge Switch
Pressing the Jog/Purge switch allows the op-
erator to jog wire without energizing the weld
power or gas valve circuit.
The unit provides the ability to jog the wire
feeder by means of the gun trigger or the
Jog/Purge switch.
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, in the case of a damaged
gun.
The unit displays the “TRIG ERR“ message
to inform the operator that the trigger is acti-
vated.
Jog speed can be adjusted by the Adjust
control when the unit is jogging wire. The
unit displays jog speed when the unit is be-
ing jogged.
Jogging can also be accomplished by
pressing the Jog/Purge button.
Pressing the Jog/Purge button also allows
the operator to purge gas lines before weld-
ing and to preset gas pressure at the
regulator.
1

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