Miller Electric TM-353E manual SC-137

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SC-137 431

Figure 9-7. Circuit Diagram For Syncrowave 250 Effective With Serial No. KA806713 Thru KA877024

TM-353 Page 48

Syncrowave 250

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Contents SyncrowaveR Table of Contents Declaration of Conformity For European Community CE Products Page Safety Precautions for Servicing Symbol UsageMarks a special safety message Servicing HazardsEMF Information About Pacemakers+ + + DefinitionsISO/IEC Rating Label For CE ProductsSymbols And Definitions Some symbols are found only on CE productsInstallation SpecificationsVolt-Ampere Curves 220 230 260 380 415 46060% Duty Cycle At 200 Amperes Duty Cycle And OverheatingOverheating Selecting a Location Dimensions And WeightsMovement Location And Airflow Be careful when placing or moving unit over uneven surfaces TippingWeld Output Terminals And Selecting Cable Sizes ARC Welding can cause Electromagnetic InterferenceTurn Off power before connecting to receptacle Remote 14 ReceptacleVolts AC Duplex Receptacle And Shielding Gas Connections SocketElectrical Service Guide All values calculated at 60% duty cyclePlacing Jumper Links And Connecting Input Power Check label inside your unit- only one label is on unitOperation ControlsOutput Selector Switch MetersSpot Time Controls Crater Time ControlsApplication AC Balance Control Setting Output WaveformsBalance Control AC Gtaw Amperage Adjustment Controls Output Contactor Control SwitchPostflow Time Control Arc ControlsFor AC And DC Smaw Welding High Frequency Controls Preflow Time Control OptionalTheory of Operation SCRHD1 Troubleshooting Troubleshooting TableNecessary parts Dition of contacts. Replace CR5 if necessary Contacts. Replace CR2 if necessary Troubleshooting Circuit Diagram For Welding Power Source See -1 for HD1 locationV24 D, EWaveforms For Section GndAC Output, 100 Amperes, 24 Volts AC Re- sistive Load Control Board PC1 Testing Information Use With Section Control Board PC1 Test Point Values Reference for gate pulse to SCR4 RC54 Not usedReceptacle Pin Value Remote Board PC2 Testing Information Use With Section RC3 Meter Calibration Input Voltage Labels And Connections Maintenance Routine MaintenanceMonths Circuit Breaker CB1Turn Off power before adjusting spark gaps Adjusting Spark GapsFuses F1 And F2 Sources Of HF Radiation From Incorrect Installation Welding Processes Using HFHigh Frequency HF Correct Installation Electrical Diagrams Model Serial Or Style Number Circuit Diagram Wiring DiagramSC-114 SC-120 SC-121 SC-124 SC-124 785-B SC-132 697-A SC-137 SC-135 SC-142 SC-148 SC-154 649-C SC-178 SC-179 303-A SC-181 109-E SC-188 161-A Syncrowave TM-353 TM-353 SD-188 162-A TM-353 SD-187 644 1 TM-353 SD-187 644 2 SA-121 SA-044 725-C TM-353 Description Parts List Main AssemblyPLG51 114 BASE, Prior to KE727074 170 Panel, Front w/Components Panel, Front w/ Components Rectifier, Si Diode -1 Item Panel, Mtg Components -1 Item Control Panel, Lower Front 126 Capacitor ASSEMBLY, Eff w/JK537589 thru JK690986 C14 124 COIL, HF coupling Eff w/JK572898 thru KF959378 174 Optional Equipment Page Miller