Miller Electric HF-251-2, HF-251D-1 Installation, Specifications, Typical Process Connections

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SECTION 3 − INSTALLATION

3-1. Specifications

Welding	Input Power	Type Of Input Power			Dimensions				Weight
Circuit Rat-	Cord With
Circuit Rat-	Cord With	115 Volts	230 Volts	Height		Width		Length	115 Volts	230 Volts
ing	Plug	115 Volts	230 Volts	Height		Width		Length	115 Volts	230 Volts


250 Amperes		115 Volts AC	230 Volts AC	15 in		9-1/4 in		16 in	Net:	Net:
250 Amperes		Single-Phase	Single-Phase						34 lb (15 kg)	36 lb (16 kg);
At 60% Duty	10 ft (3 m)	Single-Phase	Single-Phase						34 lb (15 kg)	36 lb (16 kg);
At 60% Duty	10 ft (3 m)	50/60/100 Hz,	50/60 Hz,	(381 mm)		(235 mm)		(406 mm)	Ship:	Ship:
Cycle		50/60/100 Hz,	50/60 Hz,	(381 mm)		(235 mm)		(406 mm)	Ship:	Ship:
Cycle		1.5 Amperes	0.75 Amperes						37 lb (17 kg)	39 lb (18 kg)
		1.5 Amperes	0.75 Amperes						37 lb (17 kg)	39 lb (18 kg)

3-2. Typical Process Connections

	Y Read and follow entire Sec-
		tion 8 for proper location and
	1	installation requirements for
		high-frequency equipment
Typical Welding Power		before installing unit.
Source Installation	1	Welding Power Source
	1	Welding Power Source
	2	Gas Cylinder
	2	HF Unit
	3	HF Unit
	4	Torch
	5	Work Clamp
3	6	Foot Control
	7	Welding Generator
4

5

6

Typical Welding

Generator Installation

7

2

3

4

5	Ref. 159 606-B / 159 607-A

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OM-611 Page 9

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Contents Processes OM-611Description From Miller to You Table of Contents Page Marks a special safety message Symbol UsageArc Welding Hazards Electric Shock can killWelding can cause fire or explosion ARC Rays can burn eyes and skinFlying Metal can injure eyes Buildup of GAS can injure or killCalifornia Proposition 65 Warnings EMF Information Principal Safety StandardsAbout Pacemakers − Consignes DE Sécurité − À Lire Avant Utilisation Identifie un message de sécurité particulierLES 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’ouïeLA Chute DE L’APPAREIL peut blesser Risque D’INCENDIE OU D’EXPLO’EMPLOI Excessif peut Faire LES Pièces Mobiles peuvent cau- ser des blessuresInformation sur les champs électromagnétiques Principales normes de sécuritéConsignes relatives aux stimulateurs cardiaques Specifications − InstallationTypical Process Connections IN-GAS-OUT Installing Gas SupplyAmperage Control Power Source Plug Information And ConnectionsOperator Control Receptacle Socket Information Operator Control Receptacle Information And ConnectionsSocket Electrode Electrode OUT Work INPUT/OUTPUT Connecting To Weld Output TerminalsConnecting Input Power High Frequency Selector Switch High Frequency Switch− Operation ControlsPostflow Timer Power Switch And Pilot LightHigh Frequency Intensity Control Shielding GasRoutine Maintenance Months − Maintenance & TroubleshootingAdjusting Spark Gaps Trouble Remedy TroubleshootingCircuit Diagram For 115 Volts Model − Electrical DiagramsCircuit Diagram For 230 Volts Model − High Frequency Incorrect InstallationWelding Processes Requiring High Frequency Weld ZoneMetal Building Correct InstallationMetal Building Requirements AC − Argon AC − Argon − Amperage Range Gas Type PolarityPreparing Tungsten Electrode For Welding − Guidelines for TIG Welding GtawPositioning The Torch Preparing Tungsten For Conventional AC WeldingPositioning Torch Tungsten For Various Weld Joints Torch Movement During WeldingTungsten Without Filler Rod Tungsten With Filler RodReturn To Table Of Contents Complete Assembly Part 1 of 2 115V Model − Parts ListComplete Assembly Part 1 Complete Assembly Part 2 of 2 115V Model Complete Assembly Part 2 Page Page Page Support ServiceMiller Electric Mfg. Co Owner’s Record