Manuals / Miller Electric / Power Tools / Welding System

Miller Electric 145 DXR, 145 Adjusting Engine Speed DX Models Only, Weld/Power Speed Adjustment

Models: 145 DXR, 145 Blue Star 145

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. Complete Parts List available at www.MillerWelds.com

8-4. Adjusting Engine Speed (DX Models Only)

2500 ± 100 rpm (42 Hz)

3750 ± 30 rpm (62 Hz)

After tuning engine, check engine speed. See table for proper no load speed. If necessary, adjust speed as follows:

Start engine and run until warm. Set Weld Output Control to Max.

Weld/Power Speed Adjustment

1 Adjustment Screw

To increase speed, turn screw in (clockwise). To decrease speed, turn screw out (counterclockwise).

Idle Speed Adjustment

2Throttle Solenoid TS1

3Adjustment Screw

Loosen two screws on side of throttle solenoid TS1. Adjust TS1 until idle speed is approximately 2500 rpm. Use adjustment screw to fine tune idle speed. Be sure TS1 plunger bottoms at idle. Tighten two screws on TS1.

!	Stop	engine.	Close	fuel
	valve.

Tools Needed:

803 595−B

OM-4417 Page 28

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Contents

OM-4417210 403F ProcessesDescription File Engine DriveFrom Miller to You Table of Contents Page Symbol Usage Arc Welding HazardsElectric Shock can kill HOT Parts can cause severe burnsFumes and Gases can be hazardous Buildup of GAS can injure or killARC Rays can burn eyes and skin Welding can cause fire or explosionEngine Hazards Compressed Air HazardsWelding Wire can cause injury HOT Parts can cause burns and injuryFire or Explosion hazard Falling Unit can cause injuryPrincipal Safety Standards California Proposition 65 WarningsEMF Information Radiation can cause interferenceUN Choc Électrique peut tuer Signification des symboles− Consignes DE Sécurité − Lire Avant Utilisation LE Soudage peut provoquer un in cendie ou une explosion DES Pièces Chaudes peuvent provoquer des brûlures gravesLES Fumées ET LES GAZ peuvent être dangereux DES Organes Mobiles peuvent pro voquer des blessures LE Bruit peut affecter l’ouïe’EXPLOSION DE LA Batterie peu Risque D’INCENDIE OU D’EXPLO- Sion LA Chaleur DU Moteur peut pro- voquer un incendie’AIR Comprimé peut provoquer des blessures LE Surchauffement peut endom- mager le moteur électrique DES Organes Mobiles peuvent provoquer des blessuresLES Fils DE Soudage peuvent provoquer des blessures ’EMPLOI Excessif peutInformation EMF Proposition californienne 65 AvertissementsPrincipales normes de sécurité − Specifications Symbol DefinitionsWeld, Power, And Engine Specifications − DefinitionsVolt-Ampere Curves Dimensions, Weights, And Operating AnglesDimensions Fuel Consumption Generator Power Curve Duty Cycle100% Duty Cycle at 80 Amperes CC/DC Minutes Welding− Installation Installing Welding GeneratorMovement HazardsOil Grounding Generator When Supplying Building SystemsEngine Prestart Checks − Standard Model Connecting The Battery DX Models Only Engine Prestart Checks − DX ModelConnecting To Weld Output Terminals Selecting Weld Cable Sizes45 m 60 m 70 m 90 m 105 m 120 m 10 − Put terminals− Operating the Welding Generator Controls Standard Models See SectionTo Start Description Of Controls Standard Models See SectionStop engine and add oil if light goes on see Section Controls DX Models See Section Description Of Controls DX Models See Section AC Receptacle RC1 Generator Power Panel Receptacles− Operating Auxiliary Equipment − Maintenance Routine MaintenanceServicing Air Cleaner Precleaner Paper ElementStop engine Standard Model ShownAdjusting Engine Speed Standard Models Only Stop Engine CloseValve Tools NeededIdle Speed Adjustment Adjusting Engine Speed DX Models OnlyWeld/Power Speed Adjustment − Troubleshooting TroubleshootingGenerator Power WeldingEngine Recommended Spare Parts − Parts ListRecommended Spare Parts − Electrical Diagrams Circuit Diagram For Standard ModelsCircuit Diagram for DX Models Grounding Generator To Truck Or Trailer Frame − Generator Power GuidelinesSelecting Equipment Grounding When Supplying Building Systems How Much Power Does Equipment Require?Approximate Power Requirements For Industrial Motors Approximate Power Requirements For Farm/Home EquipmentIndustrial Motors Rating Starting Watts Running Watts Farm/Home Equipment Rating Starting Watts Running WattsApproximate Power Requirements For Contractor Equipment Contractor Rating Starting Watts Running WattsPower Required To Start Motor How Much Power Can Generator Supply?Single-Phase Induction Motor Starting Requirements KVA/HP x HP x 1000 / Volts = Starting AmperageTypical Connections To Supply Standby Power Selecting Extension Cord Use Shortest Cord Possible Cord Lengths for 120 Volt LoadsCurrent Load Watts Amperes Cord Lengths for 240 Volt LoadsStick Welding Procedure − Stick Welding Smaw GuidelinesStriking an Arc − Tapping Technique Electrode and Amperage Selection ChartStriking an Arc − Scratch Start Technique Poor Weld Bead Characteristics Good Weld Bead CharacteristicsPositioning Electrode Holder 10-30 9090 End View of Work AngleConditions That Affect Weld Bead Shape Electrode Movement During WeldingButt Joints Lap JointTee Joint 16 in 30 1.6 mm Tack WeldsTroubleshooting − Porosity Troubleshooting − Excessive SpatterWeld Test Possible Causes Corrective ActionsTroubleshooting − Excessive Penetration Troubleshooting − Incomplete FusionTroubleshooting − Lack Of Penetration Troubleshooting − Distortion Troubleshooting − Burn-ThroughTroubleshooting − Waviness Of Bead Support ServiceYour distributor also gives To locate a Distributor or Service Agency visit Miller Electric Mfg. CoFor assistance in filing or settling claims, contact Your distributor and/or equipment manufacturer’s

8-4. Adjusting Engine Speed (DX Models Only)

Weld/Power Speed Adjustment

Idle Speed Adjustment

Stop

valve.

Tools Needed: