Miller Electric 301 G Description Of Front Panel Controls, Engine Speed, Generator Power Output

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6-2. Description Of Front Panel Controls

1 Process Switch

See Section 6-3for Process switch informa- tion.

2Voltage/Amperage Adjust Switch And Remote Receptacle

Use switch to select front panel or remote voltage/amperage control. For remote con- trol, place switch in Remote position and connect remote control to Remote recep- tacle RC4 (see Sections 5-8and 6-4).

3 V/A Control

Use control to select weld voltage or amperage. Control may be adjusted while welding.

.For maximum weld output (above 220 Amps), run unit at 3600 rpm. For weld output below 220 Amps, operate unit at 3000 or 3600 rpm.

With Process/Contactor switch in Stick or TIG setting, use control to adjust amperage. With Process/Contactor switch in Wire posi- tion, use control to adjust voltage. With V/A Adjust Switch in Remote position, control limits the remote amperage in Stick and TIG modes, but has no effect in MIG modes.

4 Engine Hour Meter

Use hour meter to help schedule routine maintenance (see Section 8-1).

5 Engine Choke Control

Use control to change engine air-fuel mix when starting engine. Pull control out when starting a cold engine. Push control in when engine starts.

.Do not run engine with Choke control partially on or spark plugs will foul.

6 Engine Control Switch

Use switch to start engine, stop engine, and select engine speed. (Use switch in com- bination with Speed Control switch to select engine speed.) In Run/Idle 3600/2400 RPM position, engine runs at 2400 rpm at no weld load, and 3600 rpm under weld load. In Run/ Idle 3000/1800 RPM position, engine runs at 1800 rpm at no weld load, and 3000 rpm under weld load. In either position, engine speed is determined by weld load and posi- tion of Speed Control switch (see item 7 and table below).

.Generator power is available at recep-

tacles RC1 and RC2 only at 1800 rpm. If generator is not locked at 1800 rpm,

engine speed increases in response to weld load and generator power output stops at receptacles RC1 and RC2. Generator power load does not affect engine speed.

7 Speed Control Switch

Use switch to control engine auto idle func- tion. Place switch in Generator Lock position when not welding to lock engine speed at 1800 rpm for generator power at 60 Hz ac re- ceptacles RC1 and RC2. (Generator power is always available at 60-120 Hz receptacle RC3.)

Place switch in Weld position to allow engine speeds to be determined by position of En- gine Control switch. The Speed Control switch is not needed at start-up.

To Start: pull out choke and turn Engine Control switch to Start position. Release switch and slowly push choke in when engine starts.

.If the engine does not start, let the

engine come to a complete stop before attempting restart.

To Stop: turn Engine Control switch to Off position.

Controlling Engine Speed And Weld/Generator Power Output

Engine Controls

Speed Control Switch In Generator Lock. Engine Control Switch in either Run/Idle position.

Speed Control Switch In Weld.

Engine Control Switch in 3600/2400 RPM.

Speed Control Switch In Weld.

Engine Control Switch in 3000/1800 RPM.

Engine Speed

1800 rpm (Power Speed)

Continuous

No Load: 2400 rpm (Idle Speed) Load: 3600 rpm (Weld Speed)

No Load: 1800 rpm (Idle Speed) Load: 3000 rpm (Weld Speed)

Generator Power

Output

5 kW/kVA Total From

All AC Receptacles

2.4kW/kVA at 60-120 Hz From AC Receptacle

RC3 Only

5 kW/kVA Total From

All AC Receptacles At 1800 rpm.

At 3000 rpm, Output Available Only At 2.4 kW/kVA 60-120 Hz AC Receptacle RC3

Weld Output

Welding Not Recommended

3600 rpm:

20 − 300 A

3000 rpm:

20 − 220 A

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Contents OM-4411207 283E ProcessesDescription From Miller to You Table of Contents Options and Accessories Warranty Arc Welding Hazards Symbol UsageEngine Hazards Compressed Air Hazards Radiation can cause interference Principal Safety StandardsCalifornia Proposition 65 Warnings EMF InformationLES Fumées ET LES GAZ peuvent être dangereux Signification des symboles− Consignes DE Sécurité − Lire Avant Utilisation UN Choc Électrique peut tuerLE Bruit peut affecter l’ouïe LE Soudage peut provoquer un in- cendie ou une explosionDES Particules Volantes peuvent blesser les yeux DES Pièces Chaudes peuvent provoquer des brûlures graves’AIR Comprimé peut provoquer des blessures ’EXPLOSION DE LA Batterie peutDES Organes Mobiles peuvent provoquer des blessures LA Chaleur DU Moteur peut pro- voquer un incendieInformation sur les champs électromagnétiques Principales normes de sécurité− Definitions Symbol DefinitionsDescription − SpecificationsWeld, Power, And Engine Specifications Dimensions, Weights, and Operating AnglesGenerator Power Curve Fuel Consumption While Welding And Using Generator PowerExceeding duty cycle can damage unit and void warranty Duty Cycle100% Duty Cycle at 280 Amperes DC/CC Stick And MIG Mode Volt-Ampere Curves CC/DC Stick ModeCV/DC MIG Mode DC TIG Mode Volt-Ampere Curves Installing Welding Generator − InstallationEngine Prestart Checks OilFull Gasoline Charger Activating The Dry Charge Battery If ApplicableDo not overfill battery cells Read and follow all instrucConnect negative − cable last Connecting The BatteryInstalling Exhaust Pipe + −Selecting Weld Cable Sizes Connecting To Weld Output TerminalsSocket Information Remote Receptacle InformationFor wetter weld puddle for mild steel Adjusting Wire MIG Weld Puddle ConsistencyReinstall side panel OM-4411 Tools Needed 7/16Front Panel Controls − Operating Welding GeneratorWeld Output Generator Power OutputDescription Of Front Panel Controls Engine SpeedProcess Switch Process Switch SettingsSwitch Setting Process Output On/Off Control Example Combination Remote Amperage Control Stick Remote Amperage/Voltage ControlCircuit Breaker CB3 Hz Generator Power Receptacles And Circuit Breakers− Operating Auxiliary Equipment 240 V 50 a AC Receptacle RC1AC Receptacle RC3 Variable Frequency Hz Generator Power Receptacle RC3Ceptacle RC3 120 V 20 a Variable FrequencyReceptacle Current Available in Amperes− Maintenance & Troubleshooting Maintenance Label Servicing Optional Spark Arrestor Oil Servicing Air CleanerFull Tools Needed Changing Engine Oil, Oil Filter, And Fuel FilterOverload Protection Located behind front panel Tools NeededCircuit Breaker CB5 Troubleshooting WeldingTrouble Remedy Variable Frequency Generator Power Receptacle RC3 Hz Generator Power Receptacles RC1 And RC2Engine Start Your Professional Welding Career Now Circuit Diagram For Welding Generator − Electrical Diagram211 395-C − Generator Power Guidelines Selecting EquipmentGrounding Generator To Truck Or Trailer Frame Amperes x Volts = Watts Grounding When Supplying Building SystemsHow Much Power Does Equipment Require? Earth ground if supplyingFarm/Home Equipment Rating Starting Watts Running Watts Approximate Power Requirements For Industrial MotorsApproximate Power Requirements For Farm/Home Equipment Industrial Motors Rating Starting Watts Running WattsContractor Rating Starting Watts Running Watts Approximate Power Requirements For Contractor EquipmentKVA/HP x HP x 1000 = Starting Amperage Power Required To Start MotorHow Much Power Can Generator Supply? Single-Phase Induction Motor Starting RequirementsTypical Connections To Supply Standby Power Current Load Watts Amperes Selecting Extension Cord Use Shortest Cord PossibleMaterial Thickness Reference Chart − -3 41− -4 Main AssemblyBatt 182367 Panel Front w/Components -1Item Panel Front w/ComponentsPanel, Front w/Components Bracket w/Components Generator -1Item Service Your distributor also givesSupport Transportation Department Miller Electric Mfg. CoFor assistance in filing or settling claims, contact Your distributor and/or equipment manufacturer’s
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