Hobart Welding Products TM-944C manual 195 891-A

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195 891-A

Figure 8-6. Circuit Diagram For 230 VAC Model Control Board PC1

Effective With Serial No. KK213350 And Following

TM-944 Page 40

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Contents TM-944C ProcessesDescription Table of Contents − Safety Precautions for Servicing Symbol UsageServicing Hazards Radiation can cause interference California Proposition 65 WarningsEMF Information Overuse can cause Overheating− Specifications SpecificationsVAC Model Duty Cycle % Duty Cycle And OverheatingOutput Output AmperesVolt-Ampere Curves − Installation Installing Welding Gun Installing Work ClampProcess/Polarity Table Electrode Negative For Flux Core WireFor Solid Wire Changing PolarityInstalling Gas Supply Volt, 20 ampere individual Rating LabelGrounded Receptacle Up to 200 ft 61 m= GND/PE Do not move or operate unit where it could tip18 in 457 mm of space for airflow L2 L1 230 VAC230 Electrical Service Guide For 230 VAC ModelInstalling Wire Spool And Adjusting Hub Tension Reference 1996 National Electrical Code NECBe sure that tip matches wire diameter Threading Welding WirePressure Indicator Scale Reinstall contact tip and nozzle− Operation Voltage SwitchPower Switch ControlsWeld Parameter Chart For 115 VAC Model Electrode Positive For Solid Wire Starting Value only − Wire Speed Setting Can beWire Speed Also Depends on Other variables Such Stick Out WhileWeld Parameter Chart For 230 VAC Model Listed Starting Value Only − Wire Speed Setting can be Metal Etc− Theory of Operation Main Block Wire Drive MotorStablizer L1 Polarity− Troubleshooting Troubleshooting TableGS1 if necessary Clear blockage in gunV8/R5 V9/R6 V10 V11/R9 TM-944Or Flux Core 030/.035 Solid585 640Test Equipment Needed Handler 135510 600700 Control Board PC1 Testing Information 115 VAC Model Control Board PC1 Test Point Values 115 VAC Model Circuit commonControl Board PC1 Testing Information 230 VAC Model Control Board PC1 Test Point Values 230 VAC Model Disconnect power before maintaining − MaintenanceRoutine Maintenance Overload Protection Drive Motor ProtectionChanging Drive Roll Or Wire Inlet Guide Turn Off power before replacing contact tipReplacing Gun Contact Tip Cleaning Or Replacing Gun Liner Disconnect gun from unitTo Reassemble Gun Replacing Switch And/Or Head Tube − Electrical Diagrams Model Serial Or Style Number Circuit Diagram Wiring Diagram194 324-C 194 325-A 196 637-A 196 655-A 195 890-A 195 891-A Handler 135 H-10 Gun − Parts List 11 10Dia Part Mkgs Description Quantity Optional Optional Drive Rolls Options195 Hobart Welding Products