Hobart Welding Products OM-949 manual Routine Maintenance, Months

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SECTION 5 − MAINTENANCE & TROUBLESHOOTING

5-1. Routine Maintenance

Y Disconnect power before maintaining.

3 Months

Replace

Unreadable

Labels

Repair Or

Replace

Cracked

Cables

6 Months

12 Months

Blow Out Or Vacuum

Inside,

ORDuring Heavy Service,

Clean Monthly

Lubricate Shunt Block

(See Section 5-2)

5-2. Lubricating Shunt Block And Anti-Noise Adjustment

1

2

Tools Needed:

1/2 in

5/16, 3/8 in

YTurn Off welding power source and disconnect input power.

1Wrapper Remove wrapper.

2Shunt Block

.Do not grease screw threads on shunt block.

Apply light coating of high-tempera- ture grease to shaded areas of both shunt blocks. Turn amperage con- trol handle to spread grease evenly.

3 Noise Adjustment Screws

If shunt block vibrates and

2becomes noisy, tighten adjustment screws 1/4 turn. Install wrapper, turn On unit, and check for shunt noise. Repeat procedure until noise stops. Do not overtighten. Call your nearest Factory Authorized Ser- vice Agent if noise continues.

Y Install wrapper before

3turning On power.

803 564-B

OM-949 Page 15

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Contents Description ProcessesFrom Hobart to You Table of Contents Page Electric Shock can kill Symbol UsageMarks a special safety message Arc Welding HazardsBuildup of GAS can injure or kill ARC Rays can burn eyes and skinWelding can cause fire or explosion Flying Metal can injure eyesCalifornia Proposition 65 Warnings EMF Information Principal Safety StandardsAbout Pacemakers LES Fumées ET LES GAZ peuvent être dangereux UNE Décharge Électrique peut entraîner la mortIndique un message de sécurité particulier DES Pièces Chaudes peuvent provoquer des brûlures graves LE Soudage peut provoquer unIncendie ou une explosion DES Particules Volantes peuvent blesser les yeuxDES Organes Mobiles peuvent provoquer des blessures Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser ’EMPLOI Excessif peut SUREn ce qui concerne les stimulateurs cardiaques Principales normes de sécuritéDuty Cycle Charts SpecificationsAmps Volt-Ampere CurvesSelecting a Location Volt ModelRemoving Barrel From Elec- trode Holder Installing Electrode Holder And Work ClampInstalling Electrode Cable and Barrel onto Electrode Holder Installing Work Cable onto Work ClampPut terminals Weld Output Cables150 ft 200 ft 250 ft 350 ft 400 ft 45 m 60 m 70 m 90 m 105 m 120 mConnecting Input Power Electrical Service GuideControls Lubricating Shunt Block And Anti-Noise Adjustment Routine MaintenanceMonths Wrapper Remove wrapper from unit Crank Handle Shunt Shaft Reinstalling Amperage Adjustment IndicatorTrouble Remedy Troubleshooting− Electrical Diagrams Welding Methods Shielded Metal Arc Welding Smaw Procedure − Welding Methods & Troubleshooting6013 7014 Electrode And Amperage Selection ChartPositioning The Electrode Holder Striking An ArcArc Length Weld Bead CharacteristicsConditions That Affect Weld Bead Shape Electrode AngleButt Joints Electrode Movement During WeldingPorosity Welding TroubleshootingLap Joints Tee JointsIncomplete Fusion Excessive SpatterLack Of Penetration Distortion Excessive PenetrationBurn-Through Waviness Of BeadStart Your Professional Welding Career Now − Parts List Dia Part Description Quantity Page Support ServiceAssistance Hobart Welding Products Contact your Distributor for