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Hobart Welding Products TM-944C manual Electrical Service Guide For 230 VAC Model

Models: TM-944C

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3-8. Electrical Service Guide For 230 VAC Model

Input Voltage	230

Input Amperes At Rated Output	20

Max Recommended Standard Fuse Or Circuit Breaker Rating In Amperes	20

Min Input Conductor Size In AWG/Kcmil	14

Max Recommended Input Conductor Length In Feet (Meters)	66 (20)

Min Grounding Conductor Size In AWG/Kcmil	12

Reference: 1996 National Electrical Code (NEC)	S-0092-J

3-9. Installing Wire Spool And Adjusting Hub Tension

Installing 4 in (102 mm) Wire Spool

When a slight force is needed to turn spool, tension is set.

Installing 8 in (203 mm) Wire Spool

Adapter used with

8 in (203 mm)

spool only.

When a slight force is needed to turn spool, tension is set.

Retaining ring used with 8 in (203 mm) spool only.

Tools Needed:

1/2 in

803 012 / 803 013-B / Ref. 802 971-C

Handler 135 / 175

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TM-944 Page 11

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Hobart Welding Products TM-944C Electrical Service Guide For 230 VAC Model, Reference 1996 National Electrical Code NEC

Contents

Processes TM-944CDescription Table of Contents Symbol Usage − Safety Precautions for ServicingServicing Hazards EMF Information California Proposition 65 WarningsRadiation can cause interference Overuse can cause OverheatingSpecifications − SpecificationsVAC Model Output Duty Cycle And OverheatingDuty Cycle % Output AmperesVolt-Ampere Curves Installing Welding Gun Installing Work Clamp − InstallationFor Solid Wire Electrode Negative For Flux Core WireProcess/Polarity Table Changing PolarityInstalling Gas Supply Grounded Receptacle Rating LabelVolt, 20 ampere individual Up to 200 ft 61 m18 in 457 mm of space for airflow Do not move or operate unit where it could tip= GND/PE L2 L1 230 VACInstalling Wire Spool And Adjusting Hub Tension Electrical Service Guide For 230 VAC Model230 Reference 1996 National Electrical Code NECPressure Indicator Scale Threading Welding WireBe sure that tip matches wire diameter Reinstall contact tip and nozzlePower Switch Voltage Switch− Operation ControlsWeld Parameter Chart For 115 VAC Model Wire Speed Also Depends on Other variables Such Stick Out Starting Value only − Wire Speed Setting Can beElectrode Positive For Solid Wire WhileWeld Parameter Chart For 230 VAC Model Metal Etc Listed Starting Value Only − Wire Speed Setting can be− Theory of Operation Stablizer L1 Block Wire Drive MotorMain PolarityTroubleshooting Table − TroubleshootingClear blockage in gun GS1 if necessaryTM-944 V8/R5 V9/R6 V10 V11/R9585 030/.035 SolidOr Flux Core 640Handler 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 Routine Maintenance − MaintenanceDisconnect power before maintaining Overload Protection Drive Motor ProtectionTurn 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