Miller Electric 255 Cleaning Or Replacing Gun Liner, Disconnect gun first, To Reassemble Gun

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4-6. Cleaning Or Replacing Gun Liner

Y Disconnect gun first.

Head tube

Remove nozzle, contact tip, adapter, and wire outlet guide.

3/8 in

Lay gun cable out straight before installing new liner.

Blow out gun casing.

Tools Needed:

3/8 in

Remove liner.

To Reassemble Gun:

Insert new liner.

Install and tighten wire outlet guide.

Cut liner off 3/4 in (20 mm) (3/8 in [9.5 mm] for aluminum) from head tube.

Install adapter, contact tip, and nozzle.

Ref. ST-800 797-C

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Contents Auto ArcR M-25 Gun Page Table of Contents Page Marks a special safety message Symbol UsageArc Welding Hazards ARC Rays can burn eyes and skin Principal Safety Standards Fire or Explosion hazardEMF Information About PacemakersVolt-Ampere Curve SpecificationsWeight Stainless SteelWelding Gun Duty Cycle And Overheating Welding Power Source Duty Cycle And OverheatingExceeding duty cycle can damage unit and void warranty 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 Months Routine MaintenanceDisconnect power Circuit Breaker CB1Fuses F1 And F2 Changing Drive Roll And Wire Inlet GuideTurn Off unit, and disconnect input power Replacing Gun Contact TipDisconnect gun first Cleaning Or Replacing Gun LinerTo Reassemble Gun 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