Miller Electric MARK VIII-2 manual Maintenance & Troubleshooting, Routine Maintenance, Months

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SECTION 6 − MAINTENANCE & TROUBLESHOOTING

6-1. Routine Maintenance

Y Turn Off polyweld system, and disconnect input power before inspecting, maintaining, or servicing.

	3 Months
	Clean
	And
See	Tighten
Section	Weld
4-6	Terminals
	Tape Or
	Replace
	Cracked
− −	Cables
− −
	Replace
	Unreadable
10	Labels
10

6 Months

Blow Out

OROr

Vacuum

Inside

	During Heavy Service,
− −	Clean Monthly
	Fan
	Motor
	Sealed
	Bearings
	− No Oil
− −	Needed
− −

ST-144 567-A

6-2. Overload Protection

A. Overload Supplementary Protector CB1 And Module Supplementary Protectors CB11 Through CB81

YTurn Off polyweld system, and dis- connect input power before inspect- ing, maintaining, or servicing.

2

1Overload Supplementary Protecotr CB1

Supplementary protector CB1 pro- tects the 115 volts ac windings of control transformer T3 from over- load. If CB1 opens, the 115 volts ac duplex receptacle RC2 would not work. Manually reset CB1.

2Module Supplementary Protectors CB11 Through CB81

The control circuitry in each of the eight modules is protected from overload by a supplementary pro- tector CBX1 (“X” represents the number of the applicable module, 1−8). If a module supplementary protector opens, output from the affected module would drop to mini- mum and can not be regulated. Manually reset the affected protector.

115V AC 115V AC OVERLOAD

10A BREAKER

CLOSED

OPEN

1ST-144 570-A / Ref. ST-174 143 / Ref. SC-085 382

OM-218 Page 22

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Contents OM-218 DescriptionFrom Miller to You Table of Contents Page Arc Welding Hazards Symbol UsageMarks a special safety message Electric Shock can killFlying Metal can injure eyes ARC Rays can burn eyes and skinWelding can cause fire or explosion Buildup of GAS can injure or killCalifornia Proposition 65 Warnings About Pacemakers Principal Safety StandardsEMF Information Indique un message de sécurité particulier UNE Décharge Électrique peut entraîner la mortLES Fumées ET LES GAZ peuvent être dangereux DES Particules Volantes peuvent blesser les yeux LE Soudage peut provoquer unIncendie ou une explosion DES Pièces Chaudes peuvent provoquer des brûlures graves’EMPLOI Excessif peut SUR Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser DES Organes Mobiles peuvent provoquer des blessuresPrincipales normes de sécurité En ce qui concerne les stimulateurs cardiaquesVolt-Ampere Curves − SpecificationsSpecifications Amperes Input at Rated Load Output, 60 HzFor Main Transformer Duty Cycle And OverheatingFor Each Module And Total System OverheatingMovement − InstallationSelecting a Location And Moving Polyweld System Location And AirflowWeight Dimensions, Weights And Base Mounting Hole LayoutDimensions Selecting And Preparing Weld Output Cables350 ft 400 ft 15m 30m 45 m 60 m 70 m 90 m 105 m 120 m Weld Cable Size150 ft 200 ft 250 ft Connecting Weld Output Cables Connecting To Weld Output TerminalsCommon Work Cable Size Read Safety Blocks at start of -6before proceedingStandard Module Connections Separate Work ConnectionsParallel Module Connections Separate Work Connections Common WorkRemote Amperage Control Receptacle Remote Contactor Control Connections OptionalPositioning Jumper Links Connecting Input PowerVolts AC Duplex Receptacle TE3 TE2Close and secure access door on welding power source Connecting Input PowerWelding Power Source Input Power Con- nections Disconnect Device Input Power Connec- tions− Operation Electrical Service GuideTime-Delay ControlsMin 35 a Max 125 a Set Switch Set Desired Maximum Amperage Amperage Adjustment ControlsPower Switch Push Buttons And Pilot Light Hz Model ShownMonths − Maintenance & TroubleshootingRoutine Maintenance Overload ProtectionModule Fuse Links F11 And F12 Through F81 And F82 Blank Module PanelControl Fuses F3 And F4 Before inspecting, maintaining, or servicing TroubleshootingTurn Off polyweld system, and disconnect input power OM-218 − Electrical Diagram Circuit Diagram For Polyweld SystemSD-082 527-C Amperage Range Gas Type Polarity − Selecting and Preparing Tungsten ElectrodeSelecting Tungsten Electrode Preparing Tungsten For DC Electrode Negative Dcen Welding Torch Movement During Welding − Guidelines for TIG Welding GtawPositioining The Torch Positioning Torch Tungsten For Various Weld Joints Butt Weld And Stringer Bead Joint Lap Joint Corner Joint− Parts List Main Assembly Section aTP1 Main Assembly Section B CR1 194 Panel, Front Module w/Components -1Item Panel, Front Lower w/Components -1Item Panel, Front Lower w/ComponentsPage Support ServiceYour distributor also gives For assistance in filing or settling claims, contact To locate a Distributor or Service Agency visitMiller Electric Mfg. Co Your distributor and/or equipment manufacturer’s