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Miller Electric HF-251-2, HF-251D-1 Maintenance & Troubleshooting, Routine Maintenance Months

Models: HF-251-2 HF-251D-1

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SECTION 5 − MAINTENANCE & TROUBLESHOOTING

5-1.	Routine Maintenance
			3 Months
	3 Months	Disconnect all power before maintaining.
	3 Months		Replace
			Replace
	Tape Or		Cracked
	Tape Or		Parts
	Replace		Parts
	Replace			14-Pin Cord
	Cracked			14-Pin Cord
	Cracked
	Cables
	Replace
	Unreadable		Gas Hose	Torch Cable
	Labels
	Clean			Adjust
	And			Adjust
	And			Spark
	Tighten			Spark
	Tighten			Gaps
	Weld			Gaps
	Weld
	Terminals
			6 Months
			OR	Blow Out
			OR	Or
				Vacuum
				Inside
			During Heavy Service,
		155 457	Clean Monthly

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OM-611 Page 17

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Miller Electric HF-251-2, HF-251D-1 manual Maintenance & Troubleshooting, Routine Maintenance Months

Contents

OM-611 ProcessesDescription From Miller to You Table of Contents Page Marks a special safety message Symbol UsageArc Welding Hazards Electric Shock can kill Welding can cause fire or explosion ARC Rays can burn eyes and skinFlying Metal can injure eyes Buildup of GAS can injure or kill California Proposition 65 Warnings Principal Safety Standards EMF InformationAbout Pacemakers − Consignes DE Sécurité − À Lire Avant Utilisation Identifie un message de sécurité particulier LES Particules Projetées peu- vent blesser les yeux LE Soudage peut causer un incen- die ou une explosionLES Pièces Chaudes peuvent cau- ser des brûlures graves LE Bruit peut affecter l’ouïe LA Chute DE L’APPAREIL peut blesser Risque D’INCENDIE OU D’EXPLO’EMPLOI Excessif peut Faire LES Pièces Mobiles peuvent cau- ser des blessures Principales normes de sécurité Information sur les champs électromagnétiquesConsignes relatives aux stimulateurs cardiaques − Installation SpecificationsTypical Process Connections IN-GAS-OUT Installing Gas Supply Amperage Control Power Source Plug Information And Connections Operator Control Receptacle Information And Connections Operator Control Receptacle Socket InformationSocket Electrode Electrode OUT Work INPUT/OUTPUT Connecting To Weld Output Terminals Connecting Input Power High Frequency Selector Switch High Frequency Switch− Operation Controls Postflow Timer Power Switch And Pilot LightHigh Frequency Intensity Control Shielding Gas Routine Maintenance Months − Maintenance & Troubleshooting Adjusting Spark Gaps Trouble Remedy Troubleshooting Circuit Diagram For 115 Volts Model − Electrical Diagrams Circuit Diagram For 230 Volts Model − High Frequency Incorrect InstallationWelding Processes Requiring High Frequency Weld Zone Correct Installation Metal BuildingMetal Building Requirements AC − Argon AC − Argon − Amperage Range Gas Type Polarity Preparing Tungsten Electrode For Welding − Guidelines for TIG Welding GtawPositioning The Torch Preparing Tungsten For Conventional AC Welding Positioning Torch Tungsten For Various Weld Joints Torch Movement During WeldingTungsten Without Filler Rod Tungsten With Filler Rod Return To Table Of Contents Complete Assembly Part 1 of 2 115V Model − Parts List Complete Assembly Part 1 Complete Assembly Part 2 of 2 115V Model Complete Assembly Part 2 Page Page Page Support Service Miller Electric Mfg. Co Owner’s Record