Maintenance & Troubleshooting | Hobart Welding Products 700I, HP-70

.A complete Parts List is available at www.MillerWelds.com

SECTION 6 MAINTENANCE & TROUBLESHOOTING

6-1. Routine Maintenance

!	Disconnect power	. Maintain more often
	before maintaining.	during severe conditions.

n = Check	Z = Change	~ = Clean	l = Replace	Reference
* To be done by Factory Authorized Service Agent

Each					Section 4-1,
Use					6-5
	n Gas/Air Pressure	n Torch Tip, Electrode,
		And Shield Cup
Every					Section 6-4
Week					Section 6-4
Week	n Shield Cup Shutdown
	n Shield Cup Shutdown
	System
Every	l Damaged Or Unreadable	~ Air Filter/Regulator	l Cracked Parts	n l Gas/Air Hose	Section 6-2,
3	Labels				Section 6-2,
3	Labels				8
Months					8
Months
	n l Torch Body, Cable
Every	OR
6	OR
6
Months
	~ Inside Unit

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Hobart Welding Products 700I Maintenance & Troubleshooting, Routine Maintenance, Disconnect power, Before maintaining

Contents

Processes OM-244 013CDescription File Plasma Cutters From Miller to You Table of Contents Page Plasma Arc Cutting Hazards Symbol UsageCutting can cause fire or explosion Electric Shock can kill ARC Rays can burn eyes and skin Flying Sparks can injureNoise can damage hearing Fumes and Gases can be hazardous Moving Parts can injure HOT Parts can burnFlying Metal or Dirt can injure eyes Overuse can cause Overheating California Proposition 65 Warnings Principal Safety StandardsEMF Information About Implanted Medical Devices Consignes DE Sécurité Lire Avant Utilisation Signification des symbolesLE Coupage présente un risque de feu ou d’explosion UN Choc Électrique peut tuer LES Étincelles Projetées peuvent provoquer des blessures Risque de blessure en casLE Bruit peut endommager l’ouïe LES Fumées ET LES GAZ peuvent être dangereux LES Bouteilles peuvent exploser si elles sont endommagées ’ARC Plasma peut provoquer des blessuresLES Pièces Chaudes peuvent provoquer des brûlures Les Pièces Mobiles peuvent provoquer des blessures LA Chute DE L’ÉQUIPEMENT peut provoquer des blessures ’EMPLOI Excessif peutRisque D’INCENDIE OU LE Coupage Ã L’ARC peut causer des interférence Principales normes de sécurité Proposition californienne 65 AvertissementsInformations relatives aux CEM En ce qui concerne les implants médicaux I1eff DefinitionsI1max Specifications Installation Torch Dimensions And Weight Power Source Dimensions And WeightDimensions And Weight Duty Cycle And Overheating Connecting Work Clamp Connecting Gas/Air SupplyDo not move or operate unit where it could tip Selecting a Location Extension Cord Data Electrical Service Guide Serial Number And Rating Label Location Connecting 1-Phase Input Power For 240 VAC Prong Not Used Engine Control Switch must be set at RUNAlways connect green or Terminal, never to a load Cable Management Strap Installing Alternative Plug Electrode Wrench Controls Operation Mild Steel Recommended Cut Speed Trigger Safety Lock Plasma Cutting System Practices Pilot arc starts immediately when trigger is pressed Example Of Cutting Operation Sequence Of Cutting Operation Example Of Cutting Using Stand-off Guide Sequence Of Cutting Using Stand-off Guide Sequence Of Piercing Operation Routine Maintenance Maintenance & TroubleshootingDisconnect power Before maintaining Checking Or Replacing Filter Element Checking Shield Cup Shutdown System Status/Trouble Lights Electrode Wrench Turn Off power source before checking torch partsChecking/Replacing Retaining Cup, Tip, And Electrode Work Cable Connections Torch And Work Cable ConnectionsTorch Connections Trouble Remedy Troubleshooting Power Source Arc goes on and off while cutting Troubleshooting Torch Circuit Diagram Electrical Diagram 244 011-B Recommended Spare Parts Parts ListRecommended Spare Parts Support Service Miller Electric Mfg. Co Owner’s Record

SECTION 6 MAINTENANCE & TROUBLESHOOTING

6-1. Routine Maintenance

Disconnect power

. Maintain more often

before maintaining.