Miller Electric 300 P manual Description Of Front Panel Controls See Section

Page 29

6-2. Description Of Front Panel Controls (See Section 6-1)

Engine Starting Controls

1 Preheat Switch

Use switch to energize starting aid for cold weather starting (see starting instructions fol- lowing).

2 Engine Control Switch

Use switch to start engine, select engine speed (if unit has auto idle option), and stop engine.

In Run position, engine runs at weld/power speed. In Auto position (optional), engine runs at idle speed at no load and weld speed with load applied.

3 Engine Stop Lever

Use lever to stop engine if Engine Control switch does not work.

.The Engine Stop lever shuts off the fuel

supply. However, the Engine Stop lever will not stop the engine if the engine can draw fuel-rich air from the surrounding atmosphere (oil refineries).

To Start:

YDo not use ether.

.If engine does not start, let engine come

to a complete stop before attempting re- start.

Above 325 F (05 C): turn Engine Control switch to Start. Release Engine Control switch when engine starts.

Below 325 F (05 C): turn engine control switch to Auto position. Push Preheat switch up for 60 seconds. Turn Engine Control switch to Start. Release Engine Control switch and Preheat switch when engine starts.

To Stop: turn Engine Control switch to Off position.

Engine Gauges, Meters, And Lights

4 Fuel Gauge/Hourmeter

Use gauge to check fuel level or total engine operating hours.

To check fuel level or engine hours when en- gine is not running, turn Engine Control switch to Run or Auto (optional) position.

5 Engine Indicator Light

Light goes on and engine stops if engine tem- perature exceeds 230° F (110° C) or engine oil pressure is below 10 psi (69 kPa).

.Normal engine temperature is 180 - 2035 F (82 - 955 C). Normal oil pressure is 30

-60 psi (207 - 414 kPa).

YDo not run engine until trouble is fixed.

Weld Controls

6 Remote Control Receptacle

Use receptacle to connect remote controls, wire feeders, and tools.

When a remote control is connected to the Remote receptacle, the Auto Sense Remote feature automatically switches voltage/am- perage control to the remote control (see Sec- tion 5-9).

With remote control connected, weld output is determined by a combination of front panel and remote control voltage/amperage set- tings.

If no remote control is connected to the Re- mote receptacle, the front panel Voltage/Am- perage control adjusts voltage and amper- age.

.If a remote device connected to Remote

Receptacle RC14 is faulty or is discon- nected, the meters display Help 25 (see Section8-11). Clear fault by stopping and restarting the unit or by turning Process/ Contactor switch to another position.

7 Process/Contactor Switch

See Section 6-3for Process/Contactor switch information.

8 Voltage/Amperage Control

With Process/Contactor switch in any Stick or TIG setting, use control to adjust amperage. With Process/Contactor switch in any Wire (MIG) position, use control to adjust voltage. With Voltage/Amperage Adjust Switch in Re- mote position, control limits the remote am- perage in Stick or TIG mode, but has no effect in Wire (MIG) modes.

Weld Meters

.Weld meters also work in combination to

display troubleshooting help codes (see Section 8-11).

9 DC Voltmeter

Voltmeter displays preset voltage (MIG weld- ing) with contactor off, and actual output volt- age with the contactor on. Voltmeter displays voltage at the weld output terminals, but not necessarily the welding arc due to resistance of cable and connections.

To set voltage, turn contactor off and turn Pro- cess/Contactor switch to Wire position. Turn V/A control until desired voltage is displayed on Voltmeter. When welding is finished, volt- meter displays weld voltage and then defaults to preset voltage.

10 DC Ammeter

Ammeter displays preset amperage (Stick and TIG only) when not welding, and actual output amperage when welding.

To set amperage, turn Process/Contactor switch to Stick or TIG position. Turn V/A con- trol until desired amperage is displayed on Ammeter. When welding is finished, ammeter displays weld amperage and then defaults to preset amperage.

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Contents Processes OM-4433218 314KDescription File Engine DriveFrom Miller to You Table of Contents Warranty Arc Welding Hazards Symbol UsageEngine Hazards Compressed Air Hazards California Proposition 65 Warnings Principal Safety StandardsEMF Information Radiation can cause interference− Consignes DE Sécurité − Lire Avant Utilisation Signification des symbolesUN Choc Électrique peut tuer LES Fumées ET LES GAZ peuvent être dangereuxDES Particules Volantes peuvent blesser les yeux LE Soudage peut provoquer un in- cendie ou une explosionDES Pièces Chaudes peuvent provoquer des brûlures graves LE Bruit peut affecter l’ouïe’AIR Comprimé peut provoquer des blessures LA Chaleur DU Moteur peut pro- voquer un incendie’EMPLOI Excessif peut LE Surchauffement peut endom- mager le moteur électriquePour les moteurs à essence LE Soudage À L’ARC risque de provoquer des interférencesPour les moteurs diesel Boulevard, Rexdale, Ontario, Canada M9W 1R3 téléphoneStd − Definitions− 50 h Std Manufacturer’s Rating Label Symbols And Definitions Dimensions, Weights, And Operating Angles − SpecificationsWeld, Power, And Engine Specifications MIG Mode Stick ModeTIG Mode Volt-Ampere CurvesExceeding duty cycle can damage unit and void warranty Curve shows typical fuel use under weld or power loadsFuel Consumption Duty Cycle And Overheating150 125 100 AC Generator Power CurveInstalling Welding Generator − InstallationSee -2for lifting eye rating See -2for mounting information GroundingMounting Welding Generator Tools Needed 1/2 Installing Exhaust PipeStop engine and let cool Point exhaust pipe in desired diConnecting The Battery Activating The Dry Charge Battery If ApplicableDo not overfill battery cells Close door after connecting batteryEngine Prestart Checks Coolant Recovery TankFuel Do not use gasoline. Gasoline will damage engine OilStick and TIG Welding Connecting To Weld Output TerminalsMIG and Fcaw Welding Stop engine 150 ft 200 ft 250 ft Selecting Weld Cable Sizes 350 ft 400 ft 45 m 60 m 70 m 90 m 105 m 120 m Stop engine beforeSocket Information Connecting To Remote 14 Receptacle RC14Front Panel Controls See Section − Operating Welding GeneratorDescription Of Front Panel Controls See Section Process/Contactor Switch Settings Process/Contactor SwitchLift-Arc Start Method Touch Lift-ArcStart ProcedureDo not Strike Like a Match Lift-Arc t TIGRemote Voltage/Amperage Control At least once a month, run engine at Generator Power Receptacles− Operating Auxiliary Equipment Routine Maintenance − Maintenance & TroubleshootingMaintenance Label By the warranty Servicing Air CleanerTo clean air filter Do not clean housing with air hoseServicing Engine Cooling System Inspecting And Cleaning Optional Spark Arrestor MufflerStop engine and let cool. Reinstall cleanout plug Maximum Adjusting Engine Speed On Standard ModelsDo not set engine speed higher Stop engine. Close doorWeld/Power Speed Adjust- ment Engine Speed AdjustmentEngine Speed No Load Rpm max 62.6 Hz 1250 rpm 41.6 HzTo change oil and filter Servicing Fuel And Lubrication SystemsTo replace primary canister fuel filter To drain water from fuel systemOverload Protection Replace Damaged Brushes Checking Generator BrushesHelp 25 Display Voltmeter/Ammeter Help DisplaysHelp 20 Display Welding TroubleshootingEngine Generator PowerCheck for obstructed throttle solenoid Material Thickness Reference Chart Circuit Diagram For Welding Generator − Electrical Diagrams219 228−D Welding Generator − RUN-IN ProcedureWetstacking Procedure at less than Run-In Procedure Using Load BankStop engine Do not touch hot exhaust From flammables Do not PerformBank/grid Run-In Procedure Using Resistance GridFrom flammables Do not perform run-inHas this symbol − Generator Power GuidelinesSelecting Equipment Grounding Generator To Truck Or Trailer FrameHow Much Power Does Equipment Require? Grounding When Supplying Building SystemsEarth ground if supplying Use ground device as stated Electrical codesApproximate Power Requirements For Farm/Home Equipment Approximate Power Requirements For Industrial MotorsIndustrial Motors Rating Starting Watts Running Watts Farm/Home Equipment Rating Starting Watts Running WattsContractor Rating Starting Watts Running Watts Approximate Power Requirements For Contractor EquipmentHow Much Power Can Generator Supply? Power Required To Start MotorSingle-Phase Induction Motor Starting Requirements KVA/HP x HP x 1000 = Starting AmperageTypical Connections To Supply Standby Power Current Load Watts Amperes Selecting Extension Cord Use Shortest Cord Possible108 -2 107 101 102 103 100 104 106 105 − Parts List109 81 Fig 7372 71 67 66 65 PC3 Dia Part Description Quantity Mkgs Batt Panel, Front w/Components -1Item Panel, Front w/ComponentsFUEL/HM Control Panel Generator Rectifier Assembly Wiring Harnesses Support ServiceYour distributor also gives Miller Electric Mfg. Co To locate a Distributor or Service Agency visitFor assistance in filing or settling claims, contact Your distributor and/or equipment manufacturer’s
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