Lincoln Electric 7FH manual Troubleshooting Guide

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TROUBLESHOOTING GUIDE

WARNING

ELECTRIC SHOCK can kill.

•Do not touch electrically live parts such as output terminals or internal wiring.

•When inching with gun trigger, electrode and drive mechanism are “hot” to work and ground.

•Turn OFF welding power source before installing or changing drive roll and/or guide tubes.

•Welding power source must be connected to system ground per the National Electrical Code or any applicable local codes.

•Only qualified personnel should do maintenance or troubleshooting work.

Observe all additional Safety Guidelines detailed throughout this manual.

WARNING

This Troubleshooting Guide is designed to be used by the machine Owner/Operator. Unauthorized repairs performed on this equipment may result in danger to the technician and machine operator and will invalidate your factory warranty. For your safety, please observe all safety notes and precautions detailed in the Safety Section of this manual to avoid electrical shock or danger while troubleshooting this equipment.

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CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your local Authorized Field Service Facility for technical troubleshooting assistance before you proceed.

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Contents Synergic 7F and Synergic 7FH ARC Welding can be hazardous Apr. ‘93Cylinder may explode if damaged Mar. ‘93Précautions DE Sûreté Sûreté Pour Soudage a L’ArcTable of Contents Please Examine Carton and Equipment For Damage Immediately Standard Features Wire Feed FeaturesGeneral Description Recommended Processes and EquipmentControl Features Causes mode lights to sequence Y P a D a N D D I S P L a Y DescriptionKeypad Seven key, membrane type with snap tactile feel Top to bottom starting fromOptional Features Drive Roll and Guide Tube KitsMiscellaneous Options Type K678-1 K679-1 K679-2 Wire Speed Range Specifications for Synergic 7F Synergic 7FHModel Installation Safety PrecautionsProcedure to Install Drive Roll and Guide Tubes Wire Feed Drive Roll and Guide Tube KitsSteel Wire Sizes Roll Aluminum Wire SizesGun and Cable Assemblies with Standard L. E. Connections Gun Cable ConnectionGmaw Guns Innershield GunsSynergic 7F Water Connections for Water-Cooled Guns Gun Cable Connections Wire Feeder to GunGmaw Shielding Gas Electrical Installation Work CableCurrent 60% Duty Cycle Up to 100 ft Length 30mK648 or K649 Input Cable Assembly See Electrical Optional Features InstallationInstallation section for instructions Power-Down Save Operation Keys Mode SelectionOperating Instructions Current indicated positionDisplay Control Keys Selection of English or Metric Speed Display Units Acceleration SelectionRun-In Selection Feeding Electrode and Brake Adjustment Step Trigger Mode SelectionTo Mount 10 to 44 lb 4.5-20kg Spool 12/300mm Diameter To Mount a 50-60lb 22.7-27.2kg Coil Feeding ElectrodeIdle Roll Pressure Setting Wire Loading of 13-14lb 6kg Innershield CoilsGas Guard Regulator Setting Optional K659-1 Wire Feed Overload Protection Wire Reel ChangingMaking a Weld Explanation of Prompting Error Messages Maintenance Routine MaintenanceWire Reel Mounting 50 22.7kg and 60lb 27.2kg Coils Avoiding Wire Feeding ProblemsTroubleshooting Guide Problems Communications in control cableProblems For continuity Refer to Wiring Wiring & connectionsWhen trigger is closed and no Gun connector Trigger sockets on gun connectorProblems Cold Feed key does not turn Defective keypad or Display PC Dual Procedure is not Gun has not been selected at With the remote switch open. If aFor replacing PC boards Problems with serial Troubleshooting information. SeeHXX Procedure for Replacing PC Boards Electric Shock can kill Switch RequirementsInside Input I NControl BOX Dimension Print Wire Feed Unit Dimension Print How To Read Shop Drawings New Lessons in Arc WeldingNeed Welding Training? $700.00Precaucion Warnung