Hobart Welding Products 250A manual Operation, Controls, Trigger Safety Lock

Page 17

SECTION 5 − OPERATION

5-1. Controls

OFF	POWER
OFF
	CUP
ON	TEMP
	TEMP
	INPUT VOLTAGE

1Power Switch

2Power Light

Use light to tell if unit is energized and ready to operate. Light goes off if input power is not with specified range (see trouble light infor- mation).

3 Trouble Light

Trouble light comes on for the following conditions:

aIf cup is removed from torch (unit power must be turned off and back on again)

		196 630
b	If unit overheats
c	If	input power is not within

specification (93 to 137 vac). If input power is outside of specified range, cycle power by placing the power switch in the off position and back on again. Check input power if problem continues.

5-2. Trigger Safety Lock

1 Trigger

Trigger Locked

1
Trigger Unlocked	801 545-A

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Contents Description ProcessesFrom Hobart to You Table of Contents Page Marks a special safety message Symbol UsagePlasma Arc Cutting Hazards Cutting can cause fire or explosionFlying Sparks can cause injury Exploding Parts can injureARC Rays can burn eyes and skin Noise can damage hearingCalifornia Proposition 65 Warnings About Pacemakers Principal Safety StandardsEMF Information LE Coupage présente un risque de feu ou d’explosion Signification des symbolesUNE Décharge Électrique peut entraîner la mort Identifie un message de sécurité particulierLE Bruit peut endommager l’ouïe Risque de blessure en casLES Fumées ET LES GAZ peuvent être dangereux LE Plasma D’ARC peut entraîner des blessuresDES Pieces Chaudes peuvent pro- voquer des brûlures graves LES Bouteilles peuvent exploser si elles sont endommagéesDES Organes Mobiles peuvent provoquer des blessures DES Particules Volantes peuvent blesser les yeuxConsignes relatives aux stimulateurs cardiaques Principales normes de sécuritéInformation sur les champs électromagnétiques I1eff − DefinitionsI1max Specifications For Power Source − InstallationSpecifications For Torch Duty Cycle And OverheatingDimensions And Weight Torch Dimensions And WeightSelecting a Location Movement Location And AirflowConnecting Input Power Connecting Work ClampControls Trigger Safety Lock− Operation 197 196 Pilot arc starts immediately when trigger is pressedSequence Of Operation Months − Maintenance & TroubleshootingChecking Torch Shield Cup Shutdown System Trouble Light And Checking Shield Cup Shutdown SystemWork Cable Connections Torch And Work Cable ConnectionsTorch Connections Checking/Replacing Retaining Cup, Tip, And Electrode Turn Off power source before checking torch partsTroubleshooting Power Source Troubleshooting Torch Circuit Diagram − Electrical DiagramMain Assembly − Parts ListDia Part Description Quantity Mkgs Cup 196928 RingRing 196935 196929 197567 196926 196925 196927 Page Page Support ServiceHobart Welding Products Contact your Distributor for

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Manual 32 pages 47.66 Kb

SECTION 5 − OPERATION

5-1. Controls

OFF

POWER

CUP

TEMP

INPUT VOLTAGE

5-2. Trigger Safety Lock