Miller Electric Millermatic 155 And M-15 Gun Owner's Manual

OWNER’SMANUALJune 1996 Form: OM-1314Effective With Serial No. KG171523cover_om 4/95 − ST-800 091-C PRINTED IN USA© 1996 MILLER Electric Mfg. Co.Miller

OM-1314 Page 12SECTION 3 − MAINTENANCE & TROUBLESHOOTING3-1. MaintenanceY Disconnect powerbefore maintaining.. Maintain more oftenduring severe co

OM-1314 Page 133-4. Replacing Gun Contact TipST-149 326-BY Turn Off power beforereplacing contact tip.1 Nozzle2 Contact TipCut off welding wire at con

OM-1314 Page 143-6. Cleaning Or Replacing Gun LinerRef. ST-800 797-A3/8 inTo Reassemble Gun:Insert new liner.Install and tighten wire outlet guide.Cut

OM-1314 Page 153-7. Replacing Switch And/Or Head TubeRef. ST-800 795-ADo not disturb cable connection betweencable connector and connector nut.1 Remov

OM-1314 Page 163-8. Cleaning Or Repairing Drive AssemblyRef. ST-150 093-A / ST-149 266-BY Turn Off power beforecleaning or repairing driveassembly.1 W

OM-1314 Page 173-9. TroubleshootingWelding Trouble RemedyNo weld output; wire does not feed. Secure power cord plug in receptacle (see Section 1-4).Ch

OM-1314 Page 1SECTION 4 − SAFETY PRECAUTIONS FOR ARC WELDINGsafety_som1 4/95OM-1314 − 6/964-1. Symbol UsageMeans Warning! Watch Out! There are possibl

OM-1314 Page 2CYLINDERS can explode if damaged.Shielding gas cylinders contain gas under highpressure. If damaged, a cylinder can explode. Sincegas cy

OM-1314 Page 3OVERUSE can cause OVERHEATEDEQUIPMENT.1. Allow cooling period.2. Reduce current or reduce duty cycle beforestarting to weld again.3. Fol

OM-1314 Page 4SECTION 5 − ELECTRICAL DIAGRAMSB-180 784-AFigure 5-1. Circuit Diagram

OM-1314 Page 5SECTION 6 − WELDING METHODS & TROUBLESHOOTINGmod4.1* 9/92A. Welding Methods6-1. Holding And Positioning Welding GunWire Extension (S

OM-1314 Page 66-2. Conditions That Affect Weld Bead ShapeS-0634Short Normal LongShort Normal Long10°10°GUN ANGLES AND WELD BEAD PROFILESWIRE EXTENSION

OM-1314 Page 76-4. Weld Bead CharacteristicsRef. S-0052-B1 Large Spatter Deposits2 Rough, Uneven Bead3 Slight Crater During Welding4 Bad Overlap5 Poor

OM-1314 Page 8Table 6-2. PorosityPorosity − small cavities or holes resulting from gas pockets in weld metal.S-0635Possible Causes Corrective ActionsI

OM-1314 Page 9Table 6-5. Lack Of PenetrationLack Of Penetration − shallow fusion between weld metal and base metal.Lack of Penetration Good Penetratio

OM-1314 Page 10Table 6-8. Waviness Of BeadWaviness Of Bead − weld metal that is not parallel and does not cover joint formedby base metal.Possible Cau

OM-1314 Page 11SECTION 7 − PARTS LIST1Fig 7-323456 789101112 131415161723242526221920182127 28293031323334353637383940414243Fig 7-24445465049ST-801 63

OM-1314 Page 12DescriptionPartNo.Dia.Mkgs.ItemNo.Figure 7-1. Main AssemblyQuantity1 131 315 DRIVE ASSEMBLY, wire (Fig 7-3) 1. . . . . . . . . . . . .

OM-1314 Page 131ST-801 140234567689101113162417281819141819171611109823252712**Includes Item 171526222021Figure 7-2. M-15 Gun

OM-1314 Page 14QuantityDescriptionPartNo.169 903ItemNo.Figure 7-2. M-15 Gun (Fig 7-1 Item 43)1 169 715 NOZZLE, slip type .500 orf flush 1. . . . . .

OM-1314 Page 5SECTION 1 − INSTALLATION1-1. Installing Work Clamp1 Insulator2 Bolt3 Smaller Hole4 Work Clamp TabsBend tabs around work cable.5 Work Cab

OM-1314 Page 15Description QuantityPartNo.Dia.Mkgs.ItemNo.Figure 7-3. Drive Assembly, Wire (Fig 7-1 Item 1)1 MOT 173 446 MOTOR, 12VDC 1. . . . . .

OM-1314 Page 61-3. Electrical Service GuideInput Voltage230Input Amperes At Rated Output20.5Max Recommended Standard Fuse Or Circuit Breaker Rating In

OM-1314 Page 71-5. Installing Wire Spool And Adjusting Hub TensionS-049915/16 inStandard Wire Spool1 Lb Wire SpoolWhen a slight force is neededto turn

OM-1314 Page 81-6. Installing Drive Roll And Threading Welding WireRef. ST-149 266-B / Ref. ST-149 326-B / Ref. 150 093-A / Ref. 180 968 / S-0627-AIns

OM-1314 Page 9SECTION 2 − OPERATION2-1. ControlsRef. ST-180 9681 Wire Speed ControlUse control to select a wire feedspeed. As Voltage switch setting i

OM-1314 Page 10NOTES

OM-1314 Page 112-2. Duty Cycle And Overheating3 Minutes Welding 7 Minutes RestingDuty Cycle is percentage of 10 min-utes that unit can weld at rated l