Miller Electric XLT 165, XLT 135 Duty Cycle And Overheating, Output Duty Cycle %, Output Amperes

Page 14

2-2. Duty Cycle And Overheating

A. 115 VAC Model

 

200

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

135

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

100

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Amperes

80

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

60

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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40

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

2

4

6

8 10

20

40

60

80 100

Duty Cycle %

20% duty cycle at 90 amps

Duty Cycle is percentage of 10 min- utes that unit can weld at rated load without overheating.

If unit overheats, thermostat(s) opens, output stops, and cooling fan runs. Wait fifteen minutes for unit to cool. Reduce amperage or duty cycle before welding.

YExceeding duty cycle can damage unit or gun and void warranty.

2 Minutes Welding

8 Minutes Resting

 

 

B. 230 VAC Model

200

Output Amperes

130

100

80

60

40

20

10

10

20

30

40

50

60

70

80

100

Duty Cycle %

30% duty cycle at 130 amps, 60 Hz

20% duty cycle at 130 amps, 50 Hz

3 Minutes Welding

 

7 Minutes Resting

 

Overheating

 

 

 

 

0

 

A or V

 

 

 

 

 

15

OR

 

 

 

 

Minutes

 

Reduce Duty Cycle

 

 

 

duty1 4/95 − 196 617 / 196 618

OM-198 076 Page 10

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Contents Description OM-198 076AProcesses AprilPage 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 killPrincipal Safety Standards EMF Information About PacemakersUN Choc Électrique peut tuer Signification des symboles− Consignes DE Securite − Lire Avant Utilisation LES Fumées ET LES GAZ peuvent être dangereuxDES Pièces Chaudes peuvent pro- voquer des brûlures graves LE Soudage peut provoquer un incendie ou une explosionDES Particules Volantes peuvent blesser les yeux LE Bruit peut affecter l’ouïe’EMPLOI Excessif peut Risque D’INCENDIE OULA Chute DE L’APPAREIL peut blesser DES Organes Mobiles peuvent provoquer des blessuresConsignes relatives aux stimulateurs cardiaques Principales normes de sécuritéInformation sur les champs électromagnétiques VAC Model − SpecificationsSpecifications Output Amperes Duty Cycle And OverheatingOutput Duty Cycle % OverheatingVolt-Ampere Curves − Installation Installing Welding Gun Installing Work ClampProcess/Polarity Table Changing PolarityCO2 Adapter Customer Sup- plied Installing Gas SupplyFlow Adjust Regulator/flowmeter and CO2 cylinder CO2 GasVolt, 20 ampere individual Rating LabelGrounded Receptacle Up to 200 ft 61 mReceptacle Do not move or operate unit where it could tipPlug See SectionStandard Wire Spool 8 Lb Wire Spool 4 Electrical Service Guide For 230 VAC ModelInstalling Wire Spool And Adjusting Hub Tension Adjusting Hub TensionThreading Welding Wire − Operation Voltage SwitchPower Switch OM-198 076 ControlsWeld Parameters For 115 VAC Model Weld Parameters For 230 VAC Model Overload Protection − Maintenance &TROUBLESHOOTINGRoutine Maintenance Drive Motor ProtectionReplacing Gun Contact Tip Changing Drive Roll Or Wire Inlet GuideTurn Off power before replacing contact tip To Reassemble Gun Cleaning Or Replacing Gun LinerDisconnect gun from unit Replacing Switch And/Or Head Tube Does not run Troubleshooting TableTrouble Remedy − Electrical Diagram Circuit Diagram For 115 VAC ModelCircuit Diagram For 230 VAC Model − MIG Welding Gmaw Guidelines Typical MIG Process ConnectionsSelect Wire Size Recommendation Wire Speed Typical MIG Process Control SettingsWire Size Amperage Range Select VoltageHolding And Positioning Welding Gun Short Normal Long Conditions That Affect Weld Bead ShapePush Perpendicular Drag ShortNormalLongGun Movement During Welding Poor Weld Bead CharacteristicsGood Weld Bead Characteristics Troubleshooting − Excessive Penetration Troubleshooting − Excessive SpatterTroubleshooting − Porosity Possible Causes Corrective ActionsTroubleshooting − Burn-Through Troubleshooting − Lack Of PenetrationTroubleshooting − Incomplete Fusion Base metal to move Troubleshooting − Waviness Of BeadTroubleshooting − Distortion DirectionFlat & Horizontal1 Fillet Common MIG Shielding GasesApplication − Parts List Main AssemblyDia Part Description Quantity Mkgs Gun 024 .6 and .045 042024 .6 and .030/.035 .8 Page Warranty Owner’s Record
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