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Miller Electric 350, 350P, Millermatic 350 SECTION 6 MAINTENANCE &TROUBLESHOOTING

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OM-1327 Page 41

SECTION 6 − MAINTENANCE &TROUBLESHOOTING

6-1. Routine Maintenance

!Disconnect power

before maintaining. .Maintain more often

during severe conditions

n = Check Z = Change ~ = Clean l = Replace

* To be done by Factory Authorized Service Agent Reference

Every

Months

l Damaged Or Unreadable

Labels l Repair Or Replace

Cracked Weld Cable ~ Clean And Tighten Weld

Terminals n Check Gun Cable

Every

Months

~ Inside Unit Clean Drive Rolls

6-2. Overheating

Thermistors RT1 and R T2 protect the unit from damage due to overheating. If output diode heatsink or IGBT heatsink

gets too hot, RT1 and/or RT2 opens and output stops. The fan keeps running to cool the unit. Wait several minutes

before trying to weld.

Contents

Main Millermatic 350 And Millermatic 350P From Miller to You Page TABLE OF CONTENTS SECTION 1 SAFETY PRECAUTIONS - READ BEFORE USING 1-1. Symbol Usage . 1-2. Arc Welding Hazards ELECTRIC SHOCK can kill. ARC RAYS can burn eyes and skin. WELDING can cause fire or explosion. FLYING M E TAL o r DIRT can injure eyes. BUILDUP OF GAS can injure or kill. MAGNETIC FIELDS can affect Implanted Medical Devices. 1-3. Additional Symbols For Installation, Operation, And Maintenance FIRE OR EXPLOSION hazard. FALLING UNIT can cause injury. OVERUSE can cause OVERHEATING FLYING SPARKS can cause injury. 1-4. California Proposition 65 Warnings 1-5. Principal Safety Standards 1-6. EMF Information SECTION 2 2-1. Symboles utiliss . 2-2. Dange rs relatifs au soudage larc UNE DCHARGE LECTRIQUE peut entraner la mort. DES PICES CHAUDES peuvent provoquer des brlures graves. et ro- tre LES FUMES ET LES GAZ peuvent 2-3. e Risque DINCENDIE OU DEXPLO- SION. LA CHUTE DE LAPPAREIL peut blesser. LEMPLOI EXCESSIF peut SUR- CHAUFFER LQUIPEMENT. 2-4. Proposition californienne 65 Avertissements 2-5. Principales normes de scurit 2-6. Information EMF Page SECTION 3 INSTALLATION 3-1. Specifications WELDING AMPERES % DUTY CYCLE 3-2. Duty Cycle And Overheating 3-3. Volt-Ampere Curve 3-4. Connecting To Weld Output Terminals ! 3-5. Installing W ork Clamp 3-6. Installing Welding Gun/Cable Holder 3-7. Installing W elding Gun 3-8. Connecting Spoolmatic) 15A Or 30A Gun 3-9. Connecting XR Edge, XR-A Gun, XR-A Python, Or XR - Aluma-Pro . 3-10. Setting Gun Polarity For Wire Type Changing Polarity + - 3-11. Installing Gas Supply 3-12. Installing Wire Spool and Adjusting Hub Tension 3-13. Electrical Service Guide 3-14. Selecting Input Voltage (200/230/460 Volt Models Only) ! . 3-15. Selecting A Location And Connecting 3-Phase Input Power ! 3 3-16. Selection A Location And Connecting 1-Phase Input Power ! 1 3-17. Threading Welding Wire For MIG Gun . 3-18. Threading W elding Wire For XR Edge, XR-A Gun, XR-A Python, Or XR - Aluma-Pro . IMPORTANT! For Aluminum PushPull welding. Thread hub tension nut loosely IMPORTANT! For Aluminum PushPull welding. 3-19. Threading Welding Wire Through XR Guns ! . SECTION 4 OPERATION 4-1. Controls . 4-2. MIG Mode 4-3. Jog Mode . 4-5. MIG Gun-On-Demand 4-6. Pulse MIG Mode Voltage Adjustment 4-7. Pulse MIG Gun-On-Demand 4-8. Tip Saver 4-9. Weld Parameters For MIG Mode Wire Gas Material 23.5 /220 Volts/Wirefeed Reference 4-10. Weld Parameters For Pulse Mode WELDCHARTS PULSECHART PULSECHARPULSECHART Gas WireMaterial SECTION 5 PROGRAMMING 5-1. MIG Welding Mode SETUP OPERATION ARC CONTROL 5-2. Pulse MIG Welding Mode SETUP OPERATION ARC LENGTH ARC CONTROL 5-3. Timers 5-4. Arc Times, Arc Starts, Hot Start (Aluminum Pulse Only), And Crater Fill . 5-5. Setting Hot Start (Aluminum Pulse Only) Parameters On . 5-6. Setting Crater Fill WFS VOLT (MIG program) or ARCL (pulse . Page Page 5-8. System Reset SRST will appear on the left display and OFF . 5-9. Motor Calibration Function . Data sav e . 5-10. Set Up Push Motor Torque (SUP) Or Reset (rES) SECTION 6 MAINTENANCE &TROUBLESHOOTING 6-1. Routine Maintenance ! 6-2. Overheating ! 6-3. Measuring Input Capacitor Voltage 6-4. Changing Drive Roll and Wire Inlet Guide Page . 6-6. Troubleshooting Trouble Remedy Page Page Page Page Page SECTION 8 PARTS LIST 8-1. Drive Roll And Wire Guide Kits . . Wire Diameter Fraction Decimal Metric Kit No. Page Page Warranty Questions? Call 1-800-4-A-MILLER for your local Miller distributor. Effective January 1, 2007 (Equipment with a serial number preface of LH or newer) Please complete and retain with your personal records. For Service Always provide Model Name and Serial/Style Number. Contact a DISTRIBUTOR or SERVICE AGENCY near you. Owners Record