Miller Electric Axcess Troubleshooting, Disconnect power before troubleshooting, Trouble Remedy

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7-3. Troubleshooting

	Y Disconnect power before troubleshooting
Trouble	Remedy
Wire feeds, shielding gas flows, but	Check and secure weld cable connections (see Section 4-2).
electrode wire is not energized.
Electrode wire feeding stops or feeds	Check gun trigger connection. See gun Owner’s Manual.
erratically during welding.	Check gun trigger. See gun Owner’s Manual.
	Check gun trigger. See gun Owner’s Manual.
	Readjust hub tension and drive roll pressure (see Section 4-6).
	Change to correct size drive roll (see Table 9-1).
	Clean or replace dirty or worn drive roll.
	Incorrect size or worn wire guides.
	Replace contact tip or liner. See gun Owner’s Manual.
	Remove weld spatter or foreign matter from around nozzle opening.
	Have Factory Authorized Service Agency check drive motor or motor control board PC1.
Motor runs slowly.	Check for correct input voltage.
Wire feeder power is on, displays light	Check welding gun trigger leads for continuity, and repair leads or replace gun.
up, but unit is inoperative.

OM-211 076 Page 28

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Contents OM-211 076H ProcessesDescription File Advanced Manufacturing SystemsFrom Miller to You Table of Contents Page Symbol Usage Marks a special safety messageArc Welding Hazards Electric Shock can killARC Rays can burn eyes and skin Welding can cause fire or explosionFlying Metal can injure eyes Buildup of GAS can injure or killCalifornia Proposition 65 Warnings About Pacemakers Principal Safety StandardsEMF Information Indique un message de sécurité particulier UNE Décharge Électrique peut entraîner la mortLES Fumées ET LES GAZ peuvent être dangereux LE Soudage peut provoquer un Incendie ou une explosionDES Particules Volantes peuvent blesser les yeux DES Pièces Chaudes peuvent provoquer des brûlures gravesRisque D’INCENDIE OU D’EXPLO LA Chute DE L’APPAREIL peut blesser’EMPLOI Excessif peut SUR DES Organes Mobiles peuvent provoquer des blessuresPrincipales normes de sécurité En ce qui concerne les stimulateurs cardiaques− Installation Specifications− Introduction Selecting a LocationConnection Diagram Rear Panel Connections And Rotating Drive Assembly Pin Network Receptacle Information Gun Recommendation TableInstalling And Threading Welding Wire Feeder Display At Power Up Dual Schedule Switch OptionPower Source Upper Display Lower Display Voltage Range Upper Display Lower Display− Operation Operational TermsPower Switch See Section Program Volts Time Arc Adjust Front Panel ControlsSee SectionVolts Arc Adjust Program Push ButtonUpper Display Upper DisplayLower Display Sequence Trigger Control Trigger Hold Feeder Set Up Feeder Set Up Push ButtonAdjust Control Process Set Up Push Button Make a selection, rotate the Adjust controlJog/Purge Jog/Purge Push Button Adjust Control Gun Trigger ReceptacleWelding and to preset gas pressure at the regulator Reset Mode PulseMild Steel Accu-pulseSequence Parameters − Setting Sequence ParametersSequence Parameters In a Program − Maintenance Routine MaintenanceDiagnostics Closed error Indicates a triggerTrouble Remedy TroubleshootingDisconnect power before troubleshooting OM-211 076 − Electrical Diagram Circuit Diagram211 005-E − Parts List − Fig 21 − FigPart Description Quantity Control Box PLG4 Drive Assembly, Wire 1.2 mm 1.4 mmPage Support ServiceYour distributor also gives To locate a Distributor or Service Agency visit Miller Electric Mfg. CoFor assistance in filing or settling claims, contact Your distributor and/or equipment manufacturer’s