Miller Electric RGC Optional Remote Grid Amperage Control, Paralleling Switch Dual Models Only

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4-6. Optional Remote Grid Amperage Control

1

2

3

Remote amperage control only works when Fine Amperage control and optional 2-1/2 Ampere switch are in the Off position (see Section 4-5).

1Remote Grid Amperage Control

See Section 3-8 for installation.

2 Fine Amperage Control

Use control to add amperage, in 5 ampere steps, to weld output.

For front panel amperage adjust- ment, place control in Off position.

3 2-1/2 Ampere Switch

Use switch to add 2-1/2 amperes to weld output.

To add 2-1/2 amperes to weld output, place switch in On position.

For front panel amperage adjust- ment, place control in Off position.

ST-080 370-A / Ref. ST-122 903-D

4-7. Paralleling Switch (Dual Models Only)

CAUTION

ARCING can damage switch.

•Do not change Paralleling switch position while welding or under load.

Arcing inside switch can damage contacts, causing switch to fail.

warn5.1* 2/93

1 Paralleling Switch

Use switch to select weld output at one or both Electrode terminals.

For weld output at both Electrode terminals, place switch in Single position.

For total weld output at the left Electrode terminal, place switch in Parallel position. Output at the right terminal is 0 (zero).

1When switch is in Parallel position, all front panel amperage controls (left and right) adjust weld output (see Section 4-5).

Ref. ST-122 903-D

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Contents

Description OM-808Processes 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 eyesPrincipal Safety Standards About Pacemakers EMF InformationLES Fumé ES ET LES GAZ peuvent ê tre dangereux Signification des symbolesConsignes DE Securite Lire Avant Utilisation UN Choc É Lectrique peut tuerLE Bruit peut affecter l’ouïe LE Soudage peut provoquer un incendie ou une explosionDES Particules Volantes peuvent blesser les yeux DES Organes Mobiles peuvent provoquer des blessures Risque D’INCENDIE OULA Chute DE L’APPAREIL peut blesser ’EMPLOI Excessif peutConsignes relatives aux stimulateurs cardiaques Principales normes de sé curitéInformation sur les champs é lectromagné tiques Grid Rack SpecificationsResistance Grid Typical Multiple Operator System Component Relationships InstallationMulti-Grid Rack Turn Off welding power source Before moving grid or rackResistance Grid Tools Needed Weld Input/Output Cables For Multi-Grid Rack Male Camlok Connector Assembly Female Camlok Connector Assembly45 m 60 m 70 m 90 m 105 m 120 m Weld Cable SizeOptional Remote Receptacle Information And Connections 150 ft 200 ft 250 ft 300 ft 350 ftControls Dual Model Shown Safety EquipmentOperation Work Clamp Optional Polarity SwitchArcing can damage switch Amperage Controls Optional Remote Grid Amperage Control Paralleling Switch Dual Models OnlySequence Of Shielded Metal Arc Welding Smaw Maintenance & TroubleshootingRoutine Maintenance Months Turn Off all power before maintainingOverload Protection TroubleshootingCircuit Diagram For 300 Ampere Model Electrical DiagramsCircuit Diagram For 400 Ampere Model Circuit Diagram For 250/250 Ampere Model Circuit Diagram For 350/350 Ampere Model Main Assembly Parts ListDia Part Panel, Front w/Components Nameplate Resistor Assembly, Current 049 BUS BAR, interconnecting resistors MOG-Pak 6 APR Optional Equipment MOG-Pak 2, 4Remote Control Support ServiceMiller Electric Mfg. Co Owner’s Record