Hobart Welding Products TM-944C manual Test Equipment Needed, Handler 135

Page 26

6-3. Troubleshooting Circuit Diagram For Welding Power Source (230 VAC Model)

	V1
	R3
	V8/R5
	R1
	R2
	V9/R6	V10
	R4	R7
	V6
	V2	R8
	V7	R8
	V7
	V3
V4
		V11/R9
	V5
	See also Section 6-6
	for PC1 data
		Test Equipment Needed:
TM-944 Page 24	Return To Table Of Contents	Handler 135 / 175

Image 26

Contents Description TM-944CProcesses Table of Contents Servicing Hazards − Safety Precautions for ServicingSymbol Usage Radiation can cause interference California Proposition 65 WarningsEMF Information Overuse can cause OverheatingVAC Model − SpecificationsSpecifications 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 135700 510600 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 ProtectionReplacing Gun Contact Tip Changing Drive Roll Or Wire Inlet GuideTurn Off power before replacing contact tip To Reassemble Gun Cleaning Or Replacing Gun LinerDisconnect gun from unit 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 195 Optional Drive RollsOptions Hobart Welding Products