Lincoln Electric K2704-3, K2704-2 manual Testing the Torch, Motor Check, Testing the Potentiometer

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Troubleshooting Guide

TESTING THE TORCH

Motor Check.	Remove the torch connector from the cabinet.
	Using the torch Control Cable Connector, check the resistance across pins “A”
	and “B” (motor leads). The resistance across the motor should be between 5-10
	ohms. If an open circuit or short exist, check the motor leads and motor
	independently.

Testing the Potentiometer.	Using the torch Control Cable Connector, check the resistance across pin “D”
	(wiper) and pin “C”. The resistance should vary from 5K - 0 ohms.
	Check the resistance across pin “D” (wiper) and pin “G”. The resistance should
	vary from 5K - 0 ohms.

Testing the Trigger Switch.	Using the torch Control Cable Connector, check for continuity across pins “E”
	and “F” when the trigger is pressed.

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Contents Safety depends on you CougartmPowered equipment For EngineElectric Magnetic Fields May be dangerousFumes and Gases Electric Shock can kill ARC Rays can burnCan be dangerous For Electrically Cause fire or explosionIii Précautions DE Sûreté Safety Précautions DE Sûreté PourLES Machines À Souder À Transformateur ET ÀThank You Table of Contents Cougar Push Pull Gun General Information Model Cougar Push-Pull Gun with Remote Wire Speed ControlSupplied with Safety Precautions Cougar Push Pull Gun InstallationUnpacking the Push-Pull Gun Connecting to Power Source Push-pull Gun FamiliarizationSetup Procedure Cougar Push Pull Gun Operating InstructionsDrive Roll Groove Selection Procedure Settings Setting Gas Flow RateCOUGARPush Pull Gun Operating Instructions Making a WeldMaintenance Cougar Push Pull Gun ACCESSORIES/MAINTENANCEAccessories consult Lincoln Sales Bulletin E12.16 Cougar Push Pull Gun Troubleshooting Guide Problem Symptoms RemedyTesting the Torch Testing the PotentiometerTesting the Trigger Switch Motor CheckCougar Push Pull Gun Part DescriptionCougar LX Push Pull Gun S26374-14Precaucion Aviso DE Page LNC.0016