Miller Electric S-74D, S-74S manual Power Switch, Jog/Purge

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SECTION 6 − OPERATION

6-1. Power Switch

1 Power Switch

1

802 827-A

6-2. Jog/Purge

2

3

1

1Jog/Purge Push Button

2Wire Speed Control

3Gun 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.

802 828-A

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Contents Processes OM-1500-10 207 748KDescription File MIG GmawFrom Miller to You Table of Contents Standards DirectivesMarks a special safety message Symbol UsageArc Welding Hazards Electric Shock can killWelding can cause fire or explosion ARC Rays can burn eyes and skinFlying Metal can injure eyes Buildup of GAS can injure or killCalifornia Proposition 65 Warnings Principal Safety Standards EMF InformationAbout Pacemakers UNE Décharge Électrique peut entraîner la mort LES Fumées ET LES GAZ peuvent être dangereuxIndique un message de sécurité particulier Incendie ou une explosion LE Soudage peut provoquer unDES Particules Volantes peuvent blesser les yeux DES Pièces Chaudes peuvent provoquer des brûlures gravesLA Chute DE L’APPAREIL peut blesser Risque D’INCENDIE OU D’EXPLO’EMPLOI Excessif peut SUR DES Organes Mobiles peuvent provoquer des blessuresEn ce qui concerne les stimulateurs cardiaques Principales normes de sécurité+ + Rating Label For CE Products Symbols And DefinitionsType of Input Welding Power Wire Feed Overall SpecificationsSite Selection RatingRear Panel Connections And Rotating Drive Assembly Motor Speed Wire Type Wire Size Feed Speed Capability Wire Type, Size, And Feed Speed Capability TablePin Plug PLG12 Information Gun Recommendation TableNonconductive Surface Installing And Threading Welding WireSetting Current Detect Override S1-1 Setting Internal DIP SwitchesCurrent Detect Override OFF Factory Default S1-1 And S1-2 Automatic Run-In OFF S1-1 And S1-2Equipment DIP Switch Settings For Models With Meters Only Jog/Purge Power SwitchYou can adjust the preset volt Trigger Hold SwitchRoutine Maintenance Disconnect power before maintainingMonths Diagnostics Indicated ErrorError Indications Troubleshooting Disconnect power before troubleshootingTrouble Remedy − Electrical Diagram OM-1500-10 − Parts List Part Description Quantity Control Box Diagram Part Quantity Model Marking Description 74S 74D Drive Assembly, Wire PLG5 Drive Roll And Wire Guide Kits Wire Size GuideInlet Roll Kit Drive Roll Fraction MetricRoll Kit Drive Roll Support ServiceMiller Electric Mfg. Co Owner’s Record