Hobart Welding Products TM-944C manual Volt-Ampere Curves

Page 7

2-3. Volt-Ampere Curves

E. 115 VAC Model

	30.0
	25.0
VOLTS	20.0
VOLTS
OUTPUT	15.0													Range 4
	15.0													Range 3
														Range 3
														Range 2
														Range 2
	10.0													Range 1
	5.0
	0.0	10	20	30	40	50	60	70	80	90	100	110	120	130	140	150	160
	0	10	20	30	40	50	60	70	80	90	100	110	120	130	140	150	160

LOAD AMPS

The volt-ampere curves show the minimum and maximum voltage and amperage output capabilities of the welding power source. Curves of other settings fall between the curves shown.

F. 230 VAC Model

	30.0
	25.0
VOLTS	20.0																		Range 4
																			Range 3
	15.0
OUTPUT	15.0																	Range 2
																		Range 2
																Range 1
	10.0
	10.0
	5.0
	0.0
	0	10	20	30	40	50	60	70	80	90	100	110	120	130	140	150	160	170	180	190	200

LOAD AMPS

ssb1.1 10/91 − 196 608 / 196 609

Handler 135 / 175

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TM-944 Page 5

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Contents Processes TM-944CDescription Table of Contents Symbol Usage − Safety Precautions for ServicingServicing Hazards Overuse can cause Overheating California Proposition 65 WarningsEMF Information Radiation can cause interferenceSpecifications − SpecificationsVAC Model Output Amperes Duty Cycle And OverheatingOutput Duty Cycle %Volt-Ampere Curves Installing Welding Gun Installing Work Clamp − InstallationChanging Polarity Electrode Negative For Flux Core WireFor Solid Wire Process/Polarity TableInstalling Gas Supply Up to 200 ft 61 m Rating LabelGrounded Receptacle Volt, 20 ampere individualL2 L1 230 VAC Do not move or operate unit where it could tip18 in 457 mm of space for airflow = GND/PEReference 1996 National Electrical Code NEC Electrical Service Guide For 230 VAC ModelInstalling Wire Spool And Adjusting Hub Tension 230Reinstall contact tip and nozzle Threading Welding WirePressure Indicator Scale Be sure that tip matches wire diameterControls Voltage SwitchPower Switch − OperationWeld Parameter Chart For 115 VAC Model While Starting Value only − Wire Speed Setting Can beWire Speed Also Depends on Other variables Such Stick Out Electrode Positive For Solid WireWeld Parameter Chart For 230 VAC Model Metal Etc Listed Starting Value Only − Wire Speed Setting can be− Theory of Operation Polarity Block Wire Drive MotorStablizer L1 MainTroubleshooting Table − TroubleshootingClear blockage in gun GS1 if necessaryTM-944 V8/R5 V9/R6 V10 V11/R9640 030/.035 Solid585 Or Flux CoreHandler 135 Test Equipment Needed600 510700 Control Board PC1 Testing Information 115 VAC Model Circuit common Control Board PC1 Test Point Values 115 VAC ModelControl Board PC1 Testing Information 230 VAC Model Control Board PC1 Test Point Values 230 VAC Model Overload Protection Drive Motor Protection − MaintenanceRoutine Maintenance Disconnect power before maintainingTurn Off power before replacing contact tip Changing Drive Roll Or Wire Inlet GuideReplacing Gun Contact Tip Disconnect gun from unit Cleaning Or Replacing Gun LinerTo Reassemble Gun Replacing Switch And/Or Head Tube Model Serial Or Style Number Circuit Diagram Wiring Diagram − Electrical Diagrams194 324-C 194 325-A 196 637-A 196 655-A 195 890-A 195 891-A Handler 135 H-10 Gun 11 10 − Parts ListDia Part Mkgs Description Quantity Optional Options Optional Drive Rolls195 Hobart Welding Products