Miller Electric Shopmaster 300 AC/DC Owner'S Manual Download Page 4 | Manualshive

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Summary of Contents for Shopmaster 300 AC/DC

Page 1: ...ster 300 AC DC Processes Description TIG GTAW Welding Stick SMAW Welding Flux Cored FCAW Welding Arc Welding Power Source OM 322 203 118A April 2002 MIG GMAW Welding Visit our website at www MillerWel...

Page 2: ...value established in 1929 This Owner s Manual is designed to help you get the most out of your Miller products Please take time to read the Safety precautions They will help you protect yourself again...

Page 3: ...NSTALLATION 9 2 1 Specifications 9 2 2 Volt Ampere Curves 9 2 3 Duty Cycle And Overheating 10 2 4 Selecting A Location 11 2 5 Dimensions And Weights 11 2 6 Weld Output Terminals And Selecting Cable Si...

Page 4: ......

Page 5: ...that cord plug is connected to a properly grounded receptacle outlet D When making input connections attach proper grounding conduc tor first double check connections D Frequently inspect input power...

Page 6: ...lding wire at contact tip when not in use D Wear oil free protective garments such as leather gloves heavy shirt cuffless trousers high shoes and a cap D Remove any combustibles such as a butane light...

Page 7: ...intained D Keep high frequency source doors and panels tightly shut keep spark gaps at correct setting and use grounding and shielding to minimize the possibility of interference ARC WELDING can cause...

Page 8: ...a human health hazard However studies are still going forth and evidence continues to be examined Until the final conclusions of the research are reached you may wish to minimize your exposure to ele...

Page 9: ...ation est bien raccord la borne de terre du sectionneur ou que la fiche du cordon est raccord e une prise correctement mise la terre D En effectuant les raccordements d entr e fixer d abord le conduct...

Page 10: ...des v tements de protection d pourvus d huile tels que des gants en cuir une chemise en mat riau lourd des pantalons sans re vers des chaussures hautes et un couvre chef D Avant de souder retirer tou...

Page 11: ...rements et dispositifs de protection LE RAYONNEMENT HAUTE FR QUENCE H F risque de provoquer des interf rences D Le rayonnement haute frequence peut provoquer des interf rences avec les quipements de r...

Page 12: ...hamps magn tiques basse fr quence Le courant de soudage pendant son passage dans les c bles de sou dage causera des champs lectromagn tiques Il y a eu et il y a encore un certain souci propos de tels...

Page 13: ...s AC 85 4 6 74 4 37 2 29 1 6 16 8 0 91 8 2 0 58 60 Hz NEMA Class II 50 300 CC 68 Volts DC 105 4 6 91 4 46 2 36 1 6 20 9 0 91 13 6 0 58 Amperes 32 Volts DC 50 Duty Cycle CV 40 Volts DC 103 7 90 6 2 45...

Page 14: ...erheating If unit overheats thermostat opens output stops and cooling fan runs Wait fifteen minutes for unit to cool Reduce amperage or duty cycle be fore welding Y Exceeding duty cycle can damage uni...

Page 15: ...label to determine input power needs 4 Line Disconnect Device Locate unit near correct input pow er supply Y Special installation may be required where gasoline or volatile liquids are present see NE...

Page 16: ...0 2 4 0 802 933 FCAW GMAW 500 2 0 3 0 4 0 2 2 0 2 3 0 2 4 0 3 3 0 3 3 0 Weld cable size AWG is based on either a 4 volts or less drop or a current density of at least 300 circular mils per ampere S 0...

Page 17: ...ommended Standard Fuse Or Circuit Breaker Rating In Amperes Circuit Breaker1 Time Delay 2 125 110 50 45 Normal Operating 3 150 125 70 50 Min Input Conductor Size In AWG Kcmil 4 6 8 10 Max Recommended...

Page 18: ...Select size and length using Section 2 9 4 Line Disconnect Device Select type and size of overcurrent protection using Section 2 9 Reinstall side panel Y Special installation may be required where gas...

Page 19: ...ge Control Switch Switch selects front panel or remote amperage voltagecontrol For remote amperage voltage control front panel control setting is the maximum output available For example If front pane...

Page 20: ...Clean And Tighten Weld Terminals 6 Months Blow Out Or Vacuum Inside During Heavy Service Clean Monthly OR 4 2 Circuit Breakers CB1 And CB2 Ref 802 932 Ref S 143 930 A 1 Circuit Breaker CB1 If CB1 open...

Page 21: ...proper size and type of weld cable see Section 2 6 Clean and tighten all weld connections Check position of Output Selector switch see Section Figure 3 1 Have Factory Authorized Service Agent check co...

Page 22: ...OM 322 Page 18 SECTION 5 ELECTRICAL DIAGRAM Figure 5 1 Circuit Diagram...

Page 23: ...OM 322 Page 19 203 057 B...

Page 24: ...OM 322 Page 20 SECTION 6 PARTS LIST 802 882 9 6 1 2 3 19 FIG 6 4 21 22 23 FIG 6 2 3 4 5 7 8 10 11 12 17 24 13 14 26 25 20 18 16 15 27 Figure 6 1 Main Assembly...

Page 25: ...4 CR1 110386 RELAY ENCL 24VAC DPDT 5A 120VAC 8PIN 1 1 15 203066 BRACKET XFMR REACTOR 1 1 16 203064 BRACKET RECTIFIER 1 1 17 T1 203053 XFMR POWER MAIN 200 230 460 1 17 T1 203268 XFMR POWER MAIN 230 460...

Page 26: ...OM 322 Page 22 802 885 Hardware is common and not available unless listed 17 18 19 1 2 3 4 5 5 6 7 8 9 10 11 6 12 13 11 14 12 15 16 20 21 Figure 6 2 Panel Front w Components...

Page 27: ...STR DX GRD 2P3W 15A 125V 5 15R 1 1 14 C13 16 128750 CAPACITOR CER DISC 1 UF 500 VDC W TERMS 4 4 15 203060 PANEL FRONT 1 1 16 097922 KNOB POINTER 875 DIA X 250 ID W SET SCREWSPLSTC 1 1 17 203 010 LABEL...

Page 28: ...4 203065 BRACKET MTG CAPACITOR 2 2 5 082902 STRIP MTG CENTER CAPACIT0R 1 1 6 191374 CAPACITOR ELCTLT 30000 UF 45 VDC CAN 1 75 DIA 8 8 7 R4 119998 RESISTOR WW FXD 300 W 5 OHM 1 1 8 180165 BLADE FAN 14...

Page 29: ...Notes...

Page 30: ...Notes...

Page 31: ...tting Torches Remote Controls Accessory Kits Replacement Parts No labor Spoolmate Spoolguns Canvas Covers Miller s True Blue Limited Warranty shall not apply to 1 Consumable components such as contact...

Page 32: ...complete and retain with your personal records Always provide Model Name and Serial Style Number Call 1 800 4 A Miller or see our website at www MillerWelds com to locate a DISTRIBUTOR or SERVICE AGEN...

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