Main Rectifier Assembly | Miller Electric Big Blue 452P specification

.Hardware is common and not available unless listed.

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						802 279-A
					Figure 13-7. Main Rectifier Assembly
Item			Dia.	Part
	No.		Mkgs.	No.	Description	Quantity
					Figure 13-7. Main Rectifier Assembly (Figure 13-1Item 115)

. . .	. . .	. . . .	SR3 . . .	201 747 . .	RECTIFIER (consisting of)	. . . 1
. . .	. . .	. . . .	SR3 . . ♦203 381 . .		RECTIFIER, environmental (consisting of)	. . . 1
. . .	1	. . . .	. . . . . . . . .	188 137 . . .	. CONNECTION BOARD, rectifier AC	. . . 1
. . .	2	. . . .	. . . . . . . . .	188 517 . . .	. BUS BAR, connection board	. . . 3
. . .	3	. . . .	. . . . . . . . .	188 135 . . .	. ENCLOSURE, rectifier	. . . 2
. . .	4	. . . .	. . . . . . . . .	134 201 . . .	. STAND-OFF, support	. . . 3
. . .	5	. . . . PC3 . . .		201 449 . . .	. CIRCUIT CARD ASSEMBLY, protection	. . . 1
. . .	6	. . . .	. . . . . . . . .	188 136 . . .	. INSULATOR, heat sink	. . . 8
. . .	7	. . . .	. . . . . . . . .	188 493 . . .	. HEAT SINK, rectifier al	. . . 2
. . .	8	. D3, D5, D7		208 334 . . .	. DIODE, rect 275A 300V SP	. . . 3
. . .	9	. D2, D4, D6		208 335 . . .	. DIODE, rect 275A 300V RP	. . . 3

To maintain the factory original performance of your equipment, use only Manufacturer’s Suggested Replacement Parts. Model and serial number required when ordering parts from your local distributor.

OM-496 Page 86

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Miller Electric Big Blue 452P, Big Blue 302P manual Main Rectifier Assembly

Contents

Description OM-496Processes From Miller to You Table of Contents 11-3 11-111-2 Deccon1 11/02 DirectivesStandards Sound Level Information Deccon1 5/98 Symbol Usage Arc Welding Hazards Engine Hazards Compressed Air Hazards Principal Safety Standards California Proposition 65 WarningsEMF Information Radiation can cause interference Signification des symboles − Consignes DE Sécurité − Lire Avant UtilisationUN Choc Électrique peut tuer LES Fumées ET LES GAZ peuvent être dangereux LE Soudage peut provoquer un in- cendie ou une explosion DES Particules Volantes peuvent blesser les yeuxDES Pièces Chaudes peuvent provoquer des brûlures graves LE Bruit peut affecter l’ouïe ’EXPLOSION DE LA Batterie peut DES Organes Mobiles peuvent provoquer des blessuresLA Chaleur DU Moteur peut pro- voquer un incendie ’AIR Comprimé peut provoque r des blessures Principales normes de sécurité Information sur les champs électromagnétiques − Definitions + − Starting Instructions Are possible hazards as Hot muffler and exhaust pipesCan cause severe burns. Do Engine Return To Table Of Contents Manufacturer’s Rating Labels For CE Products − 50 h StdStd CC Models CC/CV Models Symbols And Definitions Dimensions, Weights, And Operating Angles − SpecificationsWeld, Power, And Engine Specifications Volt-Ampere Curves For CC Models Stick Mode MIG ModeTIG Mode Volt-Ampere Curves For CC/CV Models Fuel Consumption Duty Cycle And Overheating AC Generator Power Curve Optional Three-Phase Generator Curves12 kVA/kW Single-Phase AC Output No Weld Load 15 kVA/kW Three-Phase AC Output No Weld Load − Installation Installing Welding Generator See Sections 5-2AndLocation Grounding Airflow Clearance Using Lifting Eye Work like a Pro Mounting Welding Generator Supporting The UnitMounting Surface To Bolt Unit In Place Installing Exhaust Pipe Stop engine and let cool Activating The Dry Charge Battery If Applicable When electrolyte is low, addRead and follow all instruc Charger Connect Negative − Cable Last Connecting The BatteryReinstall cover after connecting battery Coolant Recovery Tank Engine Prestart Checks Connecting To Weld Output Terminals Selecting Weld Cable Sizes Ref 862-A / 048 720-K / 802 Connecting To Remote 14 Receptacle RC14 On CC/CV Models Socket − Operating Welding Generator − CC Models Front Panel Controls For CC Models See Section To Start Do not use ether. Using ether voids warranty Engine Indicator LightsDo not switch under load Engine Starting Controls Remote Amperage Control On CC Models Optional Weld Control/Arc Condition Information LabelExample Combination Remote Amperage Control Stick Set weld controls as shown to Return To Table Of Contents − Operating Welding Generator − CC/CV Models Front Panel Controls For CC/CV Models See Section Use switch to select weld amperage range Voltage/Amperage Adjust Switch And Remote 14 Receptacle Process/Contactor Switch On CC/CV Models Process/Contactor Switch Settings Remote Voltage/Amperage Control On CC/CV Models Optional Example Combination Remote Amperage Control TIG − Operating Auxiliary Equipment Volt And 240 Volt ReceptaclesAt least once a month, run en Open, contact Factory Autho Close panel opening if no connections are made to generator Three-Phase Power ConnectionRear Of Panel Circuit Breaker CB2 Circuit Breaker CB3 Optional Generator Power Receptacles240 V 15 a AC South African Receptacle RC1 For Non-CE Products − Maintenance & TroubleshootingMaintenance Labels Routine Maintenance Every 8 hEvery 50 h Every 100 h Clean/Set Injectors Every 1000 hEvery 2000 h Change Fuel Servicing Air Cleaner By the warrantyTo clean air filter Do not clean housing with air hose Inspecting And Cleaning Optional Spark Arrestor Muffler Reinstall cleanout plug Tools Needed Adjusting Engine Speed On Standard Models MaximumDo not set engine speed higher than specified Close door Tools Needed 10 mm Idle Speed Adjustment Weld/Power Speed AdjustmentEngine Speed No Load Rpm max 61.6 Hz 1250 rpm 41.6 Hz Servicing Fuel And Lubrication Systems Overload Protection Diagnosing Causes Of Engine Fault Shutdowns Diagnostic Checks While RunningCorrect the cause of the shut Down before operating Troubleshooting Welding − CC Models Welding − CC/CV Models Engine Standard Generator PowerOptional Three-Phase Generator Power CC/CV Models Only Wiring harness and components Shutdown switch is released OutTemperature is too high see Sections 5-7and Air in fuel system. See engine manual Return To Table Of Contents − Electrical Diagrams Circuit Diagram For CC Welding Generator 215 296-B Circuit Diagram For CC/CV Welding Generator 215 297-B Ment damage may occur − RUN-IN ProcedureWetstacking Run-In Procedure Using Load Bank Procedure at less thanStop engine Do not touch hot exhaust From flammables Do not Perform Run-In Procedure Using Resistance Grid Bank/gridFrom flammables Do not perform run-in − Generator Power Guidelines Has this symbolSelecting Equipment Grounding Generator To Truck Or Trailer Frame Grounding When Supplying Building Systems How Much Power Does Equipment Require?Earth ground if supplying Use ground device as stated in electrical codes Approximate Power Requirements For Industrial Motors Approximate Power Requirements For Farm/Home EquipmentIndustrial Motors Rating Starting Watts Running Watts Farm/Home Equipment Rating Starting Watts Running Watts Approximate Power Requirements For Contractor Equipment Contractor Rating Starting Watts Running Watts Power Required To Start Motor How Much Power Can Generator Supply?Single-Phase Induction Motor Starting Requirements KVA/HP x HP x Typical Connections To Supply Standby Power Selecting Extension Cord Use Shortest Cord Possible Current Load Watts Amperes − Parts List 109 111 -4 or 118 85 Fig Dia Part Mkgs Description Quantity 209 Figures 13-2 Control Box Assembly − CC Models PLG3 Control Box Assembly − CC/CV Models PC7 195 Panel, Front w/Components − CC Models RC13 032 Panel, Front w/Components − CC/CV Models 41 40 Panel, Front w/Components − CC/CV Models -1Item PC4, PC5 189 Generator Generator -1Item 602 SCREW, .312−18x .75 hexwhd.66d stl pld slffmg tap−rw 601 Main Rectifier Assembly Page Page Support ServiceYour distributor also gives Miller Electric Mfg. Co For assistance in filing or settling claims, contactYour distributor and/or equipment manufacturer’s Transportation Department