Hobart Welding Products 150, 120 manual Troubleshooting Table, Trouble Remedy

Page 28

5-6. 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.

 

 

 

 

 

 

 

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

 

 

 

 

 

Check circuit breaker CB (CSA model), and reset if necessary (see Section 5-2).

 

 

No weld output; wire does not feed; fan

Thermostat S3 open (overheating). Allow fan to run; thermostat closes when unit has cooled (see Section

motor continues to run.

2-2).

 

 

 

 

 

 

 

Secure gun trigger leads (see Section 3-1).

 

 

No weld output; wire feeds.

Connect work clamp to get good metal to metal contact.

 

 

 

 

 

Replace contact tip (see Section 5-4).

 

 

 

 

 

Check for proper polarity connections (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.

welding.

 

 

 

Adjust drive roll pressure (see Section 3-9).

 

 

 

 

 

 

 

Change to proper drive roll groove (see Section 5-3).

 

 

 

 

 

Readjust hub tension (see Section 3-8).

 

 

 

 

 

Replace contact tip if blocked (see Section 5-4).

 

 

 

 

 

Clean or replace wire inlet guide or liner if dirty or plugged (see Section 5-3 or Section 5-5).

 

 

 

 

 

Replace drive roll or pressure bearing if worn or slipping (see Section 5-3).

 

 

 

 

 

Secure gun trigger leads or repair leads (see Section 3-1).

 

 

 

 

 

Check circuit breaker CB or CB2 (depending on Model), and reset if necessary (see Section 5-2).

 

 

 

 

 

Check and clear any restrictions at drive assembly and liner (see Section 3-9 or Section 5-5).

 

 

 

 

 

Have nearest Factory Authorized Service Agent check drive motor.

 

 

 

 

 

OM-210 088 Page 24

Page 27 Page 29
Image 28
Page 27 Page 29
Contents Processes OM-210 088DDescription From Hobart 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 killPrincipal Safety Standards EMF Information About PacemakersSignification des symboles Consignes DE Securite Lire Avant UtilisationUN Choc É Lectrique peut tuer LES Fumé ES ET LES GAZ peuvent ê tre dangereuxDES Particules Volantes peuvent blesser les yeux LE Soudage peut provoquer un incendie ou une explosionLE Bruit peut affecter l’ouïe Risque D’INCENDIE OU LA Chute DE L’APPAREIL peut blesser’EMPLOI Excessif peut DES Organes Mobiles peuvent provoquer des blessuresInformation sur les champs é lectromagné tiques Principales normes de sé curitéConsignes relatives aux stimulateurs cardiaques Specifications SpecificationsVAC Model Duty Cycle And Overheating 30%dutycycle at 90 amps Minutes WeldingOverheating Reduce Duty Cycle MinutesVolt-Ampere Curves Installation Installing Welding GunChanging Polarity Process/Polarity TableInstalling Gas Supply Flow Adjust460 mm 18 in 457 mm of space for airflow Do not move or operate unit Where it could tipL2 L1 230 VAC Electrical Service Guide For 230 VAC Model Installing Wire Spool And Adjusting Hub TensionStandard Wire Spool 8 Lb Wire Spool 4 Adjusting Hub TensionCut off wire. Close and latch door Threading Welding WireRemove gun nozzle and contact tip Voltage Switch Power SwitchOperation ControlsWeld Parameters For 120 VAC Model Weld Parameters For 230 VAC Model Maintenance &TROUBLESHOOTING Routine MaintenanceDisconnect power before maintaining Overload ProtectionTurn Off power before replacing contact tip Changing Drive Roll Or Wire Inlet GuideReplacing Gun Contact Tip Disconnect gun from unit Cleaning Or Replacing Piecemaker 14-A Gun LinerTo Reassemble Gun Secure power cord plug in receptacle see Section Troubleshooting TableTrouble Remedy OM-210 088 Electrical Diagram OM-187 926Circuit Diagram For 120 VAC CSA Model Circuit Diagram For 230 VAC Model Regulator Flowmeter Wire Feeder Power Source Shielding Gas MIG Welding Gmaw GuidelinesTypical MIG Process Connections Gun Workpiece Work ClampTypical MIG Process Control Settings Wire Recommendation Wire SpeedSelect Wire Size Select VoltageHolding And Positioning Welding Gun Conditions That Affect Weld Bead Shape Push PerpendicularDragShort Normal Long ShortNormalLongGood Weld Bead Characteristics Poor Weld Bead CharacteristicsGun Movement During Welding Troubleshooting Excessive Spatter Troubleshooting PorosityTroubleshooting Excessive Penetration Possible Causes Corrective ActionsTroubleshooting Incomplete Fusion Troubleshooting Lack Of PenetrationTroubleshooting Burn-Through Troubleshooting Distortion Troubleshooting Waviness Of BeadWeld bead Application Common MIG Shielding GasesFlat & Horizontal1 Fillet Parts List Main AssemblyDia Part Mkgs Description Quantity Gun And Cable Assembly, Piecemaker 14-A 177282A-6 024 H 379 177282A-7 379 177 177282A-8379 177 177282A-9 379 177 177282A-10 024 H 177282A-11Optional Drive Rolls Options202 For One Small Gas CylinderService SupportHobart Welding Products Contact your Distributor forCall

120, 150 specifications

Hobart Welding Products has long been recognized for delivering high-quality welding solutions, and the Hobart 150,120 welder is no exception. This versatile, compact welder is designed to meet the needs of both hobbyists and professionals alike, making it a popular choice among welders in various industries.

One of the main features of the Hobart 150,120 is its dual voltage capability. It operates on both 120V and 240V power sources, providing users the flexibility to work in a variety of environments, whether at home or in a professional shop setting. This feature makes it particularly appealing for welding enthusiasts who may not always have access to higher voltage outlets.

The welder is equipped with a robust 30-140 amp output range, allowing users to tackle a wide range of welding tasks. This output capability supports a variety of materials, including mild steel, stainless steel, and aluminum, with thicknesses up to 1/4 inch. Whether you're working on auto repair, fabrication projects, or DIY tasks around the house, the Hobart 150,120 is well-suited for the job.

Another significant advantage of the Hobart 150,120 is its user-friendly design. The welder features an easy-to-read control panel that allows users to adjust the settings conveniently. The intuitive parameters ensure that both beginners and experienced welders can quickly achieve optimal results. Additionally, it incorporates a built-in thermal overload protection feature to prevent overheating, enhancing safety during operation.

In terms of technology, the Hobart 150,120 utilizes a MIG welding process that simplifies the welding experience. This process feeds a continuously welding wire through the welding gun, reducing the need for frequent reloading and ensuring a smooth, consistent weld. The inclusion of a gas solenoid also enables users to switch between gas-shielded and flux-cored wire, providing versatility for different applications.

Lastly, the compact design of the Hobart 150,120 makes it portable and easy to store, which is particularly advantageous for users with limited workspace. With its combination of robust features, advanced technologies, and user-friendly operation, the Hobart 150,120 welder stands out as an excellent choice for anyone looking to achieve high-quality welds with efficiency and ease. It firmly establishes Hobart Welding Products as a leader in the welding market.
Top Page Image Contents