Miller Electric D-74D manual Power Switch, Left/Right Select Switch, Jog/Purge

SECTION 6 − OPERATION

6-1.	Power Switch
	1	Power Switch
	1	Ref. 803 065
6-2.	Left/Right Select Switch

	1 Left/Right Select Switch
	Pressing the Left/Right Select
	switch allows the operator to
	choose which side of the unit’s con-
1	trols will operate.

Ref. 803 048

6-3. Jog/Purge

1 Jog/Purge Push Buttons

2 2 Wire Speed Controls

3 Gun Trigger Receptacles

3

1

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

Ref. 803 048

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.

OM-1500-6 Page 18