Miller Electric and DS-74DX16 Troubleshooting, Disconnect power before troubleshooting, Pull

Page 35

8-2. Troubleshooting

 

 

 

 

! Disconnect power before troubleshooting.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Trouble

Remedy

 

 

Wire feeds, shielding gas flows, but elec-

Check interconnecting cord connections. If secure, check cord for continuity and repair or replace (see

trode wire is not energized.

Sections 4-5and 4-6).

 

 

Wire feeder is on, meter(s) do not light

Check and reset circuit breaker at welding power source.

up, motor does not run, gas valve and

 

welding power source contactor do not

 

pull in.

 

 

 

Electrode wire feeding stops or feeds er-

Check gun trigger connection. See gun Owner’s Manual.

ratically during welding.

 

 

 

 

 

 

 

 

 

 

Check gun trigger. See gun Owner’s Manual.

 

 

 

 

 

 

 

 

 

Readjust hub tension and drive roll pressure (see Section 4-11).

 

 

 

 

 

 

 

 

 

Change to correct size drive roll (see Table 10-1).

 

 

 

 

 

 

 

 

 

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 does not feed until trigger is pulled,

Check for a short between welding gun trigger leads and weld cable. Repair short or replace welding gun.

but continues to feed after trigger is re-

 

leased, and trigger hold is not on.

 

 

 

Gas valve in feeder is rattling loudly

Check for a short between welding gun trigger leads and weld cable. Repair short or replace welding gun.

along with possible erratic or slow wire

 

feed speed.

 

 

 

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-1500-14 Page 31

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Contents File MIG Gmaw OM-1500-14 207 499HProcesses DescriptionFrom Miller to You Table of Contents Options and Accessories Warranty HOT Parts can cause severe burns Symbol UsageArc Welding Hazards Electric Shock can killFlying Metal or Dirt can injure eyes Fumes and Gases can be hazardousARC Rays can burn eyes and skin Welding can cause fire or explosionMoving Parts can cause injury Welding Wire can cause injuryFire or Explosion hazard Falling Unit can cause injuryAbout Implanted Medical Devices Principal Safety StandardsCalifornia Proposition 65 Warnings EMF InformationIndique des instructions spécifiques Symboles utilisésUNE Décharge Électrique peut entraîner la mort LE Soudage peut provoquer un in cendie ou une explosion DES Pièces Chaudes peuvent provoquer des brûlures gravesLES Fumées ET LES GAZ peuvent être dangereux LA Chute DE L’APPAREIL peut blesser LE Bruit peut endommager l’ouïeLES Bouteilles peuvent exploser si elles sont endommagées Risque D’INCENDIE OU D’EXPLO- SionLE Soudage À L’ARC risque de provoquer des interférences Proposition californienne 65 AvertissementsLES Fils DE Soudage peuvent provoquer des blessures En ce qui concerne les implants médicaux Principales normes de sécuritéInformation EMF OM-1500-14 − Introduction − InstallationSpecifications Installing Swivel Into Pipe PostInstalling Boom And Reel Support Installing Control Box And Adjusting TiltInstalling Wire Guide Extension Exceed 100 PSI 689 kPa Equipment Connection DiagramShielding gas pressure not to Pin Information Control Box ConnectionsPin Plug Information Gun Recommendation Table Removing Safety Collar And Adjusting BoomWire Type, Size, And Feed Speed Capability Table Motor Speed Wire Type Wire Size Feed Speed CapabilityMent above. Cut wire off. Close cover Installing And Threading Welding WireAgainst surface. Tighten knob so wire Slip at the feeder see pressure adjustPosition Settings And Results For DIP Switch S1 Setting Internal DIP SwitchesWhen DIP switch positions are changed, DIP Switch S1 DIP Switch S4 Not For Customer UsePower Source Selection Menu Operational Terms Power SwitchLeft/Right Select Switch − OperationTime sec Jog/Purge SwitchFront Panel Controls Upper Display To set the correct voltage range for a particular powerProgram Push Button Lower Display Setup Push ButtonStart Weld Adjust ControlWelding Sequence Diagram Sequence Push ButtonAuxiliary Menus Trigger Program Select Trigger Hold SetupWire Feed Speed Units BurnbackFor more information on Sequence Push Button see Section − Setting Sequence ParametersSequence Parameters In a Program Optional Dual Schedule Switch Diagrams − Setting Dual Schedule ParametersThere is a two-position DIP DiagnosticsError Error IndicationsMonths − Maintenance & TroubleshootingDiagnostics For User Defined Options Routine MaintenancePull TroubleshootingDisconnect power before troubleshooting Trouble RemedyCircuit Diagram − Electrical Diagram204 144-C 10-3 10-2 10-4 29 28 − Parts ListOptional Control Box PLG117 165 Harness Connectors/ReceptaclesBoom Assembly Boom Assembly -1Item Drive Assembly, Wire -1Items 26 Drive Assembly, WirePLG5 Not available unless listed Hardware is commonKit Roll Drive Roll and Wire Guide KitsFraction Metric RollPage Start Your Professional Welding Career Now Page Support ServiceYour distributor also gives Your distributor and/or equipment manufacturer’s To locate a Distributor or Service Agency visitMiller Electric Mfg. Co For assistance in filing or settling claims, contact
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