Generac 02010-2, 04164-2 Protection Systems, Do not Overload the Generator, Field Boost

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Section 2 – Operation

PRIMEPACT 50 Recreational Vehicle Generator

When the heat riser is in the WINTER (up) position, air is drawn from the lower intake tube, which is positioned to draw the heated air near the exhaust manifold.

To prevent carburetor icing, the owner/operator should physically position the heat riser to the prop- er position dependent on the temperature.

Figure 2.4 – Low Oil Pressure and

High Temperature Switches

2.8.1 DO NOT OVERLOAD THE GENERATOR

You can read the rated wattage/amperage capacity of your generator on the generator data decal (see Section 1.1 on Page 4).

Applying electrical loads in excess of the unit’s rated capacity will cause the engine/generator to automati- cally shut down.

To avoid overloading, add up the wattage of all con- nected electrical lighting, appliance, tool and motor loads. This total should not be greater than the gen- erator’s rated wattage capacity.

Most lighting, appliance, tool and motor loads indi- cate their required watts on their nameplate or data plate. For light bulbs, simply note the wattage rating of the bulb.

If a load does not show its rated wattage, multiply that load’s rated VOLTS times AMPS to obtain

WATTS.

Induction type motors (such as those that run the vehicle’s furnace fan, refrigerator, air conditioner, etc.) need about 2-1/2 time more watts of power for starting than for running (for a few seconds during motor starting). Be sure to allow for this when con- necting electrical loads to the generator. First, fig- ure the watts needed to start electric motors in the system. To that figure, add the running wattages of other items that will be operated by the generator.

Do not apply heavy electrical loads for the first two or three hours of operation.

2.9PROTECTION SYSTEMS

2.9. LOW OIL PRESSURE SWITCH

This switch (Figure 2.4) has normally closed (N.C.) contacts that are held open by engine oil pressure dur- ing cranking and operating. Should oil pressure drop below a preset level, switch contacts close, and the engine automatically shuts down. The unit should not be restarted until oil is added.

2.9.3 FIELD BOOST

The Controller Circuit Board houses a field boost diode and resistor that are not part of the automatic choke circuit. These two components are part of a “field boost” circuit (Figure 2.5). During engine cranking only, a positive DC (battery) voltage is deliv- ered through the diode, resistor, brushes and slip rings, and the generator rotor. Application of this voltage to the rotor “flashes the field” whenever it is started. Flashing of the field each time the generator starts makes sure that a sufficiently strong magnetic field is available to produce “pickup” voltage in the stator windings.

Figure 2.5 – Field Boost Circuit

2.9.2 HIGH TEMPERATURE SWITCH

This switch (Figure 2.4), which has normally open (N.O.) contacts, is mounted near the oil filter. The contacts close if the temperature should exceed approximately 293º F (145º C), initiating an engine shutdown.

10 Generac® Power Systems, Inc.

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Contents Power SYSTEMS, INC Authorized Service Dealer Location IntroductionPart II Installation Instructions Table of ContentsGeneral Hazards Electrical Hazards Generator Identification Model 02010-2 PrimepactModel 04164-2 Primepact 50LP Safety SpecificationsGenerator Applicability Generator AC Connection SystemOptional Propane Fuel System Fuel ConsumptionEngine OIL Requirements GeneratorSTART/STOP Switch Generator Control PanelOptional Remote START/STOP Panel Fuel PrimerAutomatic Choke Gasoline only Before Starting the EngineStarting the Generator Stopping the GeneratorApplying Loads to Generator SUMMER/WINTER Heat Riser SystemLOW OIL Pressure Switch High Temperature SwitchProtection Systems Do not Overload the GeneratorAdditional Information Checking the Engine OIL Level Changing the Engine OIL AND/OR OIL FilterMaintaining the Engine AIR Cleaner Clean AIR IntakeCleaning the Foam Precleaner Checking the Engine Spark PlugCleaning the Generator Battery MaintenanceSpark Arrestor Muffler WeeklyDrive Belt Exercising the GeneratorOUT of Service Procedure Removal from ServiceReturn to Service Part General Hazards Fire Hazards Purpose and Scope Manual Standards BookletsEquipment Description Generator Engine Operating SpeedMajor Features and Dimensions Location and Support Generator LocationGenerator Support Suspended MountingGenerator Compartments Generator RestraintCompartment Construction Compartment SizeAcoustics Sound Insulating MaterialsTypical Noise Abatement 2.2.5 Compartment Floor Cutouts Cooling and Ventilating AIR Generator AirflowCooling AIR Inlet Openings Testing the Installation Gasoline Fuel SystemCompensating for Restrictions LP GAS Fuel System Fuel Tank Flexible Fuel LineGenerator Fuel Supply Line Rigid Fuel LinesPrimary Regulator Some Important ConsiderationsVapor Withdrawal Gaseous CarburetionExhaust System Fuel Supply LinesExcess Flow Valve Leakage TestsExhaust System Safety Electrical ConnectionsMufflers and Spark Arrestors Type of Exhaust SystemWiring Isolating Different Power SourcesGenerator AC Connections ConduitPower Supply Cord Ground Fault Circuit InterruptersOptional Accessories Recommended BatteryBattery Cables Battery Cable ConnectionsPost Installation Tests Testing Under LoadBefore Initial START-UP Remote Panel ModelsInstallation Checklist Troubleshooting Guide Problem Cause CorrectionElectrical Data Electrical Data Exploded Views and Parts Lists QTY Description Exploded Views and Parts Lists REGULATOR, GAS Fuel Exploded Views and Parts Lists Lower Bearing Carrier Exploded Views and Parts Lists ¼/ M6-LOCK Washer To Starter SCROLL, Flywheel Exploded Views and Parts Lists Piston Ring SET Exploded Views and Parts Lists MANIFOLD, Intake Exploded Views and Parts Lists CARBURETOR, GN 410 L/P Your Warranty Rights and Obligations MANUFACTURER’S Emission Control System Warranty CoveragePURCHASER’S/OWNER’S Warranty Responsibilities Emission Control System Warranty Emission Related Parts Include the FollowingWarranty Schedule CONSUMER/PERSONAL Applications This Warranty Shall not Apply to the Following