Miller Electric 255 warranty Routine Maintenance, Months, Circuit Breaker CB1, Disconnect power

Page 20

SECTION 4 – MAINTENANCE & TROUBLESHOOTING

4-1. Routine Maintenance

	Y	Disconnect power	. Maintain more often
	Y	Disconnect power	during severe conditions.
		before maintaining.	during severe conditions.
		before maintaining.

		3 Months
	Replace	Repair Or
		Replace
	Damaged Or
		Cracked
	Unreadable
		Cables And
	Labels
		Cords

Clean And

Tighten

Weld

Terminals

6 Months

Blow Out Or

Vacuum Inside

Remove drive roll and carrier. Apply light coat of oil or grease to drive motor shaft.

4-2. Circuit Breaker CB1

1

2

1 Circuit Breaker CB1

If CB1 opens, wire feeding stops.

2 Welding Gun

Check gun liner for blockage or kinks.

3 Wire Drive Assembly

Check for jammed wire, binding drive gear or misaligned drive rolls.

Allow cooling period and reset breaker. Close door.

3

Ref. ST-800 924-C

OM-157 066 Page 16

Image 20

Contents Auto ArcR M-25 Gun Page Table of Contents Page Arc Welding Hazards Symbol UsageMarks a special safety message ARC Rays can burn eyes and skin Principal Safety Standards Fire or Explosion hazardEMF Information About PacemakersSpecifications WeightVolt-Ampere Curve Stainless SteelWelding Power Source Duty Cycle And Overheating Exceeding duty cycle can damage unit and void warrantyWelding Gun Duty Cycle And Overheating OverheatingInstalling Work Clamp Installing Gas SupplyRef. ST-800 921-C Setting Gun Polarity Positioning Jumper LinksElectrical Service Guide Selecting a Location And Connecting Input PowerThreading Welding Wire ScaleFront Panel Controls Controls For Standard UnitsDo not Switch Under Load Center Baffle ControlsWeld Parameter Chart OM-157 066 Routine Maintenance Disconnect powerMonths Circuit Breaker CB1Changing Drive Roll And Wire Inlet Guide Turn Off unit, and disconnect input powerFuses F1 And F2 Replacing Gun Contact TipTo Reassemble Gun Cleaning Or Replacing Gun LinerDisconnect gun first Replacing Switch And/Or Head Tube Remove handle locking nut Slide handleTroubleshooting Welding Trouble RemedyElectrical Diagram OM-157 066 Parts List 089 Baffle, Center w/Components Baffle, Center w/Components -1 Item Wire Drive And Gears Drive Roll And Wire Guide Kits Wire Drive And Gears -2 Item Panel, Rear w/Components Panel, Front w/Components Exploded View Of Gun Exploded View Of Gun Item Page Page Warranty Owner’s Record