Miller Electric 300 Tools Needed 16, 3/8 Cut tie wraps, Turn Off unit and disconnect input power

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4-8. Internal Connections For Operating 115/230 Volts, 225 Amperes AC And AC/DC Models From 115 Volts

NOTE

Follow applicable electrical codes and have a competent electrician make internal connections. Note the input amperes as stated in Section 4-7.

1

Power Switch

S1 Terminals

2

230V Connection

	6	1
	6	To Fan
		To Fan

To Fan

73

4

3

2

To Fan

2

11

115V Connection

6	To Fan

3

2
8	4

8

10

5

	5
Tools Needed:
5/16, 3/8 in	9
(cut tie wraps)

4

7/16 in

Ref. 802 247-E

YTurn Off unit and disconnect input power.

1Wrapper Remove wrapper.

2Jumper Leads

Cut tie wrap securing jumper leads to power cord lead and remove jumper leads.

3Lead 2

4Lead 3

Remove insulated sleeving, and disconnect lead 2 from lead 3.

5Lead 4

6Power Switch S1 (As Viewed From Rear Of Switch)

Disconnect lead 4 from terminal 2 on S1.

Connect lead 3 and one end of jumper lead to terminal 2.

Connect other end of jumper lead to terminal

4 on S1. Be sure existing connection to that terminal remains.

7230 V Input Power Cord Black Leads

8Green Ground Lead (On Rear Panel)

Disconnect input power cord black leads from S1, and disconnect green ground lead from ground terminal on rear panel.

9 Input Power Cord Strain Relief

Loosen strain relief, and remove 230 volt in- put power cord.

Obtain correct size and length 115 volt input power cord (see Section 4-7). Install correct size ring terminals to cord leads.

Route cord through strain relief, and connect green lead to ground terminal.

.To install large power cords, remove

knock-out located on lower rear panel of unit, insert power cord, and install plug into original power cord hole.

YMake sure paint has been removed from area where ground terminal is secured on unit.

10 115 V Input Power Cord White Lead

Connect lead 2, lead 4, and white input power cord lead together, and secure with existing hardware. Reinstall insulated sleeving.

11 115 V Input Power Cord Black Lead

Connect black input power cord lead and jumper lead to terminal 3 on S1.

Connect other end of jumper lead to terminal 1 on S1.

Use tie-wraps to secure all leads away from transformer, stabilizer and fan. Be sure leads are clear of movable shunt.

Tighten strain relief, and install wrapper.

Connect input power according to Section 4-10.

OM-316 Page 17

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Contents Description ProcessesVisit our website at OM-316087 083Q August Stick Smaw WeldingFrom 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 Principal Safety Standards EMF InformationAbout Pacemakers − Consignes DE Sécurité − À Lire Avant Utilisation Signification des symbolesLES Décharges Électriques peuvent être mortelles LES Fumées ET LES GAZ peuvent être dangereuxLES 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 sécuritéRexdale, Rexdale Ontario Canada M9W 1R3 téléphone Consignes relatives aux stimulateurs cardiaquesSymbols And Definitions − DefinitionsManufacturer’s Rating Labels Specifications − InstallationAC/DC Models AC ModelsVoid warranty Duty Cycle ChartsFor AC/DC Models For AC ModelsVolt-Ampere Curves For 115/230, 230 And 460 Volt Models 225/150 AmperesFor 220, 230/400, And 460 Volt Models 300/200 Amperes For 115/230 And 230 Volt Models 225 Amperes For 220 Volt Model For 230/400 Volt Model AmperesAC Amperes 18 in 457 mm for airflow Selecting a LocationInstalling Electrode Cable and Barrel onto Electrode Holder Installing Electrode Holder And Work ClampInstalling Work Cable onto Work Clamp Weld Output Cables115 220 230 400 460 Electrical Service Guide47.5 15010 115 V Input Power Cord White Lead Turn Off unit and disconnect input powerTools Needed 16, 3/8 Cut tie wraps Wrapper Remove wrapper Jumper LeadsConnected For 400 Volts Connected For 230 Volts Connecting Input Power Controls − OperationControls For AC/DC Models For DC Weld OutputControls For AC Models Routine Maintenance − Maintenance & TroubleshootingLubricating Shunt Block And Anti-Noise Adjustment MonthsReinstalling Amperage Adjustment Indicator Wrapper Remove wrapper from unit Crank Handle Shunt ShaftTorx Trouble Remedy TroubleshootingCircuit Diagram For AC/DC 230 Volts Models − Electrical DiagramsCircuit Diagram For AC/DC 115/230 Volts Models Circuit Diagram For 300/200 AC/DC 230/400 Volts Models Circuit Diagram For 225 230 Volts Models Circuit Diagram For 300 220 Volts Models Welding Methods Shielded Metal Arc Welding Smaw Procedure − Welding Methods & TroubleshootingElectrode And Amperage Selection Chart Striking An Arc Positioning The Electrode Holder10−30 Conditions That Affect Weld Bead Shape Weld Bead CharacteristicsElectrode Angle Arc LengthButt Joints Electrode Movement During WeldingDo not let weave width Tack WeldsLap Joints Welding TroubleshootingTee Joints PorosityExcessive Spatter Incomplete FusionLack Of Penetration Burn-Through Excessive PenetrationWaviness Of Bead DistortionMain Assembly AC/DC model illustrated − Parts ListMain Assembly Page Work like a Pro TM-188 304 Invision 354MP Service Your distributor also givesSupport For assistance in filing or settling claims, contact Miller Electric Mfg. CoYour distributor and/or equipment manufacturer’s Transportation Department