Miller Electric 172 M-10 Gun manual Troubleshooting Table, Trouble Remedy

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5-8. Troubleshooting Table

 

 

 

 

 

 

 

 

 

 

 

Trouble

 

 

Remedy

 

 

No weld output; wire does not feed; fan

Secure power cord plug in receptacle (see Section 3-5).

does not run.

 

 

 

Replace building line fuse or reset circuit breaker if open (see Section 3-5).

 

 

 

 

 

 

 

Secure gun trigger plug in receptacle (see Section 3-2).

 

 

 

 

 

Place Power switch in On position (see Section 4-1).

 

 

No weld output; wire does not feed; fan

Check Voltage control knob. Switch must “click” into detent position 1, 2, 3, or 4 for proper contact (see

motor continues to run.

Section 4-1).

 

 

 

 

 

Thermostat TP1 open (overheating). Allow fan to run; thermostat closes when unit has cooled (see

 

 

Section 2-3).

 

 

 

 

 

Check and replace motor fuse F1, if necessary (see Section 5-2).

 

 

 

 

 

Have Factory Authorized Service Agent check all board connections and shut down PC1 board.

 

 

No weld output; wire feeds.

Connect work clamp to get good metal to metal contact.

 

 

 

 

 

Replace contact tip (see Section 5-5).

 

 

 

 

 

Check for proper connections at polarity changeover board (see Section 3-2).

 

 

Low weld output.

Connect unit to proper input voltage or check for low line voltage.

 

 

 

 

 

Place voltage switch in desired position (see Section 4-1).

 

 

Electrode wire feeding stops during

Straighten gun cable and/or replace damaged parts (see Section 5-6).

welding.

 

 

 

Adjust drive roll pressure (see Section 3-7).

 

 

 

 

 

 

 

Change to proper drive roll groove (see Section 3-7).

 

 

 

 

 

Readjust hub tension (see Section 3-6).

 

 

 

 

 

Replace contact tip if blocked (see Section 5-5).

 

 

 

 

 

Clean or replace wire inlet guide or liner if dirty or plugged (see Section 5-4 and/or 5-6).

 

 

 

 

 

Replace drive roll or pressure bearing if worn or slipping (see Section 5-4).

 

 

 

 

 

Secure gun trigger plug in receptacle or repair leads, or replace trigger switch (see Section 3-2).

 

 

 

 

 

Check motor fuse F1, and replace if necessary (see Section 5-2).

 

 

 

 

 

Check and clear any restrictions at drive assembly and liner (see Section 5-4 and/or 5-6).

 

 

 

 

 

Have nearest Factory Authorized Service Agent check drive motor.

 

 

 

 

 

OM-1318 Page 22

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Contents Description OM-1318187923FProcesses From Miller to You Table of Contents Page Arc Welding Hazards Symbol UsageMarks a special safety message Electric Shock can killFlying Metal can injure eyes ARC Rays can burn eyes and skinWelding can cause fire or explosion Buildup of GAS can injure or killPrincipal Safety Standards EMF Information About PacemakersUN Choc É Lectrique peut tuer Signification des symbolesConsignes DE Securite Lire Avant Utilisation LES Fumé ES ET LES GAZ peuvent ê tre dangereuxLE Bruit peut affecter l’ouïe LE Soudage peut provoquer un incendie ou une explosionDES Particules Volantes peuvent blesser les yeux ’EMPLOI Excessif peut Risque D’INCENDIE OULA Chute DE L’APPAREIL peut blesser DES Organes Mobiles peuvent provoquer des blessuresConsignes relatives aux stimulateurs cardiaques Principales normes de sé curitéInformation sur les champs é lectromagné tiques Volt-Ampere Curves SpecificationsSpecifications Overheating Welding Power Source Duty Cycle And OverheatingWelding Gun Duty Cycle And Overheating DefinitionInstalling Welding Gun And Changing Polarity InstallationInstalling Work Clamp Installing Gas Supply Flow AdjustDo not move or operate unit Where it could tip Electrical Service GuideSelecting a Location And Connecting Input Power 18 in 457 mm of space for airflowTools Needed 15/16 Installing Wire Spool And Adjusting Hub TensionStandard Wire Spool Standard Wire Reel Assembly, and let go of wire Reinstall contact tip, and nozzleWeld Parameter 14 ga 16 ga 18 ga 20 ga 22 gaOperation Wire Speed ControlVoltage Switch ControlsDrive Motor Fuse F1 Maintenance &TROUBLESHOOTINGRoutine Maintenance Short Circuit ShutdownWire Spool Nozzle Cleaning Or Repairing Drive AssemblyTurn Off power before cleaning or repairing drive assembly Turn Off power before replacing contact tipBlow out gun casing Tools Needed Remove liner Cleaning Or Replacing Gun LinerDisconnect gun from unit To Reassemble GunRemove handle locking nut Slide handle Replacing Switch And/Or Head TubeDisconnect gun first Trouble Remedy Troubleshooting TableSecure power cord plug in receptacle see Section Motor continues to run SectionElectrical Diagram OM-1316Typical MIG Process Connections Regulator Flowmeter Wire Feeder Power Source Shielding GasMIG Welding Gmaw Guidelines Gun Workpiece Work ClampSelect Wire Size Typical MIG Process Control SettingsWire Recommendation Wire Speed Based on 1/8 in material thickness Ipm = inch per minuteHolding And Positioning Welding Gun Short Normal Long Conditions That Affect Weld Bead ShapePush PerpendicularDrag ShortNormalLongGun Movement During Welding Poor Weld Bead CharacteristicsGood Weld Bead Characteristics Troubleshooting Excessive Penetration Troubleshooting Excessive SpatterTroubleshooting Porosity Possible Causes Corrective ActionsTroubleshooting Burn-Through Troubleshooting Lack Of PenetrationTroubleshooting Incomplete Fusion Weld bead Troubleshooting Waviness Of BeadTroubleshooting Distortion Flat & Horizontal1 Fillet Common MIG Shielding GasesApplication OM-1318 Parts List Includes ItemsDia Part Description Mkgs Quantity M-10 Gun Figure -2. M-10 Gun Page Support ServiceYour distributor also gives Owner’s Record Miller Electric Mfg. Co