Power | Lincoln Electric SVM185-A instruction

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F-7	TROUBLESHOOTING AND REPAIR						F-7
Observe Safety Guidelines detailed in the beginning of this manual.

	PROBLEMS	POSSIBLE AREAS OF		RECOMMENDED
	(SYMPTOMS)	MISADJUSTMENT(S)		COURSE OF ACTION

		OUTPUT PROBLEMS
Variable or "hunting" arc.		1. Wrong size, worn and/or melted		1. Replace the contact tip.
		contact tip.		2. Verify all	work and		electrode
		2. Worn work cable or poor work		connections are tight and that
		connection.		the cables are in good condition.
		3. Wrong polarity.		Clean/replace as necessary.
		4. The gas nozzle is	extended	3. Adjust polarity		to the recom-
		beyond the contact tip or the wire		mended procedure.
		stickout is too long.		4. Adjust the gas nozzle and short-
		5. Poor gas shielding on processes		en the stickout to 3/8 to 1/2 inch-
		requiring gas.		es.
				5. Check gas flow and			mixture.
				Remove or block sources of
				drafts.

Poor arc starts with sticking or		1. Improper procedures	or tech-	1. See "Gas Metal Arc			Welding
"blast-offs", weld porosity, narrow		niques.		Guide" (GS-100).
and ropy looking bead.

The wire	feed speed/amperage	1. The software in the	POWER	1. Contact	the	local	authorized
and voltage/trim display work dur-		FEED® 25M must be upgraded.		Lincoln Field Service Shop.
ing preset but show nothing during				2. Download	update from power-
welding.				wavesoftware.com
Can only select mode 12 or other
(Factory Reset) setting - or unit
returns to the factory setting

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed. Call 1-888-935-3877.

POWER FEED® 25M

Image 81

Lincoln Electric SVM185-A service manual Power

Contents

Power Feed 25M Power Feed 25M Safety Fumes and Gases Electric Shock can kill Iii For Electrically Sûreté Pour Soudage a L’Arc Précautions DE Sûreté Electromagnetic Compatibility EMC Safety Master Table of Contents for ALL Sections Table of Contents Installation Section Technical Specifications Power Feed 25M K2536-1 Installation Safety Precautions High Frequency Protection LocationElectric Shock can Kill Wiring Power Source Wire FeederDigital Control CABLE, K1543-XX Function Weld Cable Size Coaxial Weld CableTable A.1 Gmaw Electrode Polarity Shielding GAS ConnectionGtaw Build UP of Shielding GAS MAY OFF Changing the Drive Motor Gear Ratio Procedure to Install Drive Rolls and Wire Guides Wire Drive Configuration Loading Spools of Wire Remote Sense Lead Specifications Typical System Configurations Table of Contents Operation Section Operation Safety Precautions General Description Definition of Welding TermsDuty Cycle Recommended Power Sources Recommended ProcessesEquipment Limitations 11. ON/OFF switch Connector for a remote controlPin connector Left Display window Status LED ON-OFF SwitchTable B.1 Definition 7OPERATIONB-7 Technology Power SourcesMaking a Weld with Waveform Smaw Stick Welding 8OPERATIONB-8 Process ModeSmaw Stick Welding Display MSP4 Operation NON-SYNERGIC Gmaw and Fcaw WeldingThree non-synergic welding modes are available Non-Synergic Gmaw and Fcaw Welding Display Modes 5 MSP4 Operation Figure B.5 Gmaw MIG Synergic Welding 220 26.4 ARC Control Steel and Stainless Synergic GMAW-P Pulsed MIG Welding Stainless Steel Gmaw Migwelding 220 Aluminum Synergic GMAW-P Pulsed 16OPERATIONB-16Migand GMAW-PP Pulse on Pulse Pulse-on-Pulse Welding Aluminum Pulse Welding Aluminum GMAW-P and GMAW-PP Figure B.14 Aluminum GMAW-P and GMAW-PP Welding Aluminum Pulse and Pulse-On-Pulse Synergic Weld Display Figure B.15 GMAW-STT Welding GMAW-STT 109 Figure B.16 Tailout Gtaw TIG Welding Touch StartTIG OFF Power Feed SET-UP Features Menu10M All Models Feed 10A Quick Preflow time will not be accessible from the MSP4 Operation PROCEDURE/MEMORY Panel Opera User Memories Tion Parameter Range Units LimitsMSP4 Display Limits may be set for High Limit Low LimitParameter Name Item D Escription Internal Controls Light Switch Cold FEED/GAS Purge SwitchHeater Switch Step Trigger Operation Preflow 34OPERATIONStrike Weld Figure B.20 Figure B.21 Upslope Postflow 37OPERATIONB-37 Figure B.23 Start Rear Controls Description Flow Meter Operation on Lincnet Power SourcesScfh Liter/Min Table of Contents Accessories Section Factory Installed Equipment AccessoriesWire Type Electrode Size KP KIT Drive Roll Kits Used K2593-xx #1 Co-Axial Power Cable Accessories K1500-5 Gun Receiver Bushing compatible Cooling KIT InstallationUse a 5/16 nut driver to remove the screws holding Water cooling cover on the case front of the inner Figure C.1 Python Water Cooled Guns Power Feed 25M Table of Contents Maintenance Section Routine Maintenance MaintenancePeriodic Maintenance Calibration Specification 1TABLE of CONTENTS-THEORY of Operation Section E-1 Figure E.2 General Physical Description Theory of Operation Figure E.3 GAS Solenoid Controls Power Feed 25M Control BOX User Interface Component is causing the problem. By using the status TroubleshootingComponent Status Lights Status Light States Status Light States CON’T 1TABLE of Contents Troubleshooting and Repair F-1 HOW to USE Troubleshooting Guide 2TROUBLESHOOTING and REPAIRF-2 PC Board Troubleshooting Procedures Troubleshooting and Repair See Setting DIP Switches Wire Drive Troubleshooting and Repair Output Problems Power Power source is functioning Make certain the Power Wave Setting Dip Switches in the Wire Troubleshooting and Repair Fault Code Description Possible Adjustments ArcLink System Error Codes Power Feed 25M Voltage Sense PC Board Test Test DescriptionMaterials Needed Figure F.1 Plug J1 and J2 Locations Procedure Tach Feedback Test Blue RED Drive Motor Test #550 #551 Gear BOX and Drive Motor Removal and Replacement Procedure Gear BOX Removal and Drive Motor Figure F.4 Gear BOX and Drive Motor Removal and Replacement To Remove the Wire Drive Assembly from the Gear BOX Replacement ProceduresTo Remove the Drive Motor from the Gear BOX Retest After Repair SET UP Table of Contents Diagram Section Wiring Diagram Complete Machine Code 11313 G5585 Electrical Diagrams G5638 Schematic Complete Machine Code 11313 G5638 Schematic 42 VAC & Arclink Feeder PC Board #1 G3883-2 Schematic 42 VAC & Arclink Feeder PC Board #2 G3883-2 Schematic MSP4 Optional Display PC Board G4456 Schematic SPI Display PC Board L11756 PC Board Assembly SPI Display L11757-1 Schematic Voltage Sense Select PC Board S24779 PC Board Assembly Voltage Sense Select M19540 Schematic Spool GUN PC Board L12008 PC Board Assembly Spool GUN M20159