V8/R5 V9/R6 V10 V11/R9 | Hobart Welding Products TM-944C guide

6-2. Troubleshooting Circuit Diagram For Welding Power Source (115 VAC Model)

	V1
	R3
	V8/R5
	R1
	R2
	V9/R6	V10
	R4	R7
	V6
	V2	R8
	V7	R8
	V7
	V3
V4		V11/R9
		V11/R9
	V5
	See also Section 6-4
	for PC1 data
		Test Equipment Needed:
TM-944 Page 22	Return To Table Of Contents	Handler 135 / 175

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Hobart Welding Products TM-944C manual V8/R5 V9/R6 V10 V11/R9

Contents

TM-944C ProcessesDescription Table of Contents − Safety Precautions for Servicing Symbol UsageServicing Hazards California Proposition 65 Warnings EMF InformationRadiation can cause interference Overuse can cause Overheating − Specifications SpecificationsVAC Model Duty Cycle And Overheating OutputDuty Cycle % Output Amperes Volt-Ampere Curves − Installation Installing Welding Gun Installing Work Clamp Electrode Negative For Flux Core Wire For Solid WireProcess/Polarity Table Changing Polarity Installing Gas Supply Rating Label Grounded ReceptacleVolt, 20 ampere individual Up to 200 ft 61 m Do not move or operate unit where it could tip 18 in 457 mm of space for airflow= GND/PE L2 L1 230 VAC Electrical Service Guide For 230 VAC Model Installing Wire Spool And Adjusting Hub Tension230 Reference 1996 National Electrical Code NEC Threading Welding Wire Pressure Indicator ScaleBe sure that tip matches wire diameter Reinstall contact tip and nozzle Voltage Switch Power Switch− Operation Controls Weld Parameter Chart For 115 VAC Model Starting Value only − Wire Speed Setting Can be Wire Speed Also Depends on Other variables Such Stick OutElectrode Positive For Solid Wire While Weld Parameter Chart For 230 VAC Model Listed Starting Value Only − Wire Speed Setting can be Metal Etc − Theory of Operation Block Wire Drive Motor Stablizer L1Main Polarity − Troubleshooting Troubleshooting Table GS1 if necessary Clear blockage in gun V8/R5 V9/R6 V10 V11/R9 TM-944 030/.035 Solid 585Or Flux Core 640 Test Equipment Needed Handler 135 510 600700 Control Board PC1 Testing Information 115 VAC Model Control Board PC1 Test Point Values 115 VAC Model Circuit common Control Board PC1 Testing Information 230 VAC Model Control Board PC1 Test Point Values 230 VAC Model − Maintenance Routine MaintenanceDisconnect power before maintaining Overload Protection Drive Motor Protection Changing 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 Diagram 194 324-C 194 325-A 196 637-A 196 655-A 195 890-A 195 891-A Handler 135 H-10 Gun − Parts List 11 10 Dia Part Mkgs Description Quantity Optional Optional Drive Rolls Options195 Hobart Welding Products