Hobart Welding Products TM-944C manual Threading Welding Wire, Pressure Indicator Scale

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3-10. Threading Welding Wire

4

6

Tools Needed:

1

2

3

5

1Wire Spool

2Welding Wire

3Inlet Wire Guide

4Pressure Adjustment Knob

5Drive Roll

6Gun Conduit Cable

Lay gun cable out straight.

.Hold wire tightly to keep it from unraveling.

4 in (102 mm)

6 in (150 mm)

Open pressure assembly.

Tighten

1

2

3

4

Be sure that wire is positioned

in proper feed roll groove. Close and tighten pressure assembly, and let go of wire.

Press gun trigger until wire comes out of gun.

Pull and hold wire; cut off end.

Push wire thru guides into gun;

 

continue to hold wire.

.Use pressure indicator scale to set a desired drive roll pressure.

Pressure

Indicator

Scale

INPUT

POWER

Remove gun nozzle and contact tip.

Turn power on.

 

Tighten

 

 

 

1

 

 

2

 

 

3

 

WOOD

4

Be sure that tip matches wire diameter.

Feed wire to check drive roll pressure.

Tighten knob enough to prevent slipping.

Reinstall contact tip and nozzle.

Cut off wire. Close door.

 

 

 

Ref. 802 444-C

TM-944 Page 12

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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