Miller Electric HF-251-2, HF-251D-1 manual Correct Installation, Metal Building Requirements

Page 27

7-3. Correct Installation

 

Weld Zone

7

3

50 ft

 

 

(15 m)

50 ft

 

 

(15 m)

 

 

5

6

8

1

2

8

4

Ground all metal ob- jects and all wiring in welding zone using #12 AWG wire.

Nonmetal

Building

Ground workpiece if required by codes.

9

1High-Frequency Source (welding power source with built-in HF or separate HF unit)

Ground metal machine case, work output terminal, line disconnect device, input supply, and worktable.

2 Center Point of Welding Zone

Midpoint between high-frequency source and welding torch.

3 Welding Zone

A circle 50 ft (15 m) from center point in all directions.

4 Weld Output Cables

Keep cables short and close together.

Metal Building

8

11

8

 

10

 

 

Ref. S-0695 / Ref. S-0695

5 Conduit Joint Bonding and Grounding

Metal Building Requirements

Electrically join (bond) all conduit sections

9 Metal Building Panel Bonding

using copper straps or braided wire.

Methods

Ground conduit every 50 ft (15 m).

Bolt or weld building panels together, install

6 Water Pipes and Fixtures

copper straps or braided wire across

seams, and ground frame.

 

Ground water pipes every 50 ft (15 m).

10 Windows and Doorways

7

External Power or Telephone Lines

Cover all windows and doorways with

 

 

Locate high-frequency source at least 50 ft

grounded copper screen of not more than

(15 m) away from power and phone lines.

1/4 in (6.4 mm) mesh.

8

Grounding Rod

11 Overhead Door Track

 

Consult the National Electrical Code for

Ground the track.

 

specifications.

 

Return To Table Of Contents

OM-611 Page 23

Page 26 Page 28
Image 27
Page 26 Page 28
Contents
OM-611 ProcessesDescription From Miller to You Table of Contents Page Electric Shock can kill Symbol UsageMarks a special safety message Arc Welding HazardsBuildup of GAS can injure or kill ARC Rays can burn eyes and skinWelding can cause fire or explosion Flying Metal can injure eyesCalifornia Proposition 65 Warnings Principal Safety Standards EMF InformationAbout Pacemakers − Consignes DE Sécurité − À Lire Avant Utilisation Identifie un message de sécurité particulierLE Bruit peut affecter l’ouïe LE Soudage peut causer un incen- die ou une explosionLES Particules Projetées peu- vent blesser les yeux LES Pièces Chaudes peuvent cau- ser des brûlures gravesLES Pièces Mobiles peuvent cau- ser des blessures Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser ’EMPLOI Excessif peut FairePrincipales normes de sécurité Information sur les champs électromagnétiquesConsignes relatives aux stimulateurs cardiaques − Installation SpecificationsTypical Process Connections IN-GAS-OUT Installing Gas SupplyAmperage Control Power Source Plug Information And ConnectionsOperator Control Receptacle Information And Connections Operator Control Receptacle Socket InformationSocket Electrode Electrode OUT Work INPUT/OUTPUT Connecting To Weld Output TerminalsConnecting Input Power Controls High Frequency SwitchHigh Frequency Selector Switch − OperationShielding Gas Power Switch And Pilot LightPostflow Timer High Frequency Intensity ControlRoutine Maintenance Months − Maintenance & TroubleshootingAdjusting Spark Gaps Trouble Remedy TroubleshootingCircuit Diagram For 115 Volts Model − Electrical DiagramsCircuit Diagram For 230 Volts Model Weld Zone Incorrect Installation− High Frequency Welding Processes Requiring High FrequencyCorrect Installation Metal BuildingMetal Building Requirements AC − Argon AC − Argon − Amperage Range Gas Type PolarityPreparing Tungsten For Conventional AC Welding − Guidelines for TIG Welding GtawPreparing Tungsten Electrode For Welding Positioning The TorchTungsten With Filler Rod Torch Movement During WeldingPositioning Torch Tungsten For Various Weld Joints Tungsten Without 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