Generac 005030-0 (15kW) Main Circuit Breaker, Generator Fuel System, Engine Protective Devices

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Section 1 - General Information

Liquid-cooled 15, 20 and 25 kW Generators

Figure 1.1 - Generator AC Connection System

 

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NEUTRAL

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1.6MAIN CIRCUIT BREAKER

The generator’s main circuit breaker is included with the unit as shipped from the factory. The breaker for each unit is described in Figure 1.2.

1.7GENERATOR FUEL SYSTEM

This unit has been factory tested and adjusted using a natural gas fuel system. If propane (LP) gas is pre- ferred, refer to Section 1.13, Reconfiguring the Fuel System for LP Vapor.

Fuel pressure for a natural gas set up should be five inches to 14 inches of water column (0.18 to 0.5 psi) at all load ranges.

Fuel pressure for an LP vapor set up should be 11 inches to 14 inches of water column (0.4 to 0.5 psi) at all load ranges.

NOTE:

A seperate gas line and regulator may be needed to assure proper gas pressure to the generator. Improper gas pressure can cause hard starting and affect engine durability.

Gaseous fuels such as natural and LP (propane)

!gas are highly explosive. Even the slightest spark can ignite such fuels and cause an explo- sion. No leakage of fuel is permitted. Natural gas, which is lighter than air, tends to collect in high areas. LP gas is heavier than air and tends to settle in low areas.

Figure 1.3 - Engine Protective Devices

‹1.8.1 LOW OIL PRESSURE SWITCH

This switch is normally-closed (N.C.) but is held open by engine oil pressure during engine running. Should operating oil pressure drop below about 8-10 psi (55-68 kPa), the switch contacts close and the engine shuts down automatically (Figure 1.4).

Figure 1.4 - Low Oil Pressure Switch

1.8ENGINE PROTECTIVE DEVICES

The engine has several safety switches which cause the engine to automatically shut down under the fol- lowing conditions: low oil pressure, high coolant tem- perature, engine overspeed, low coolant level or over- crank (Figure 1.3).

‹1.8.2 HIGH COOLANT TEMPERATURE SWITCH

Normally open (N.O.) thermostatic switch has sens- ing tip which is immersed in captive coolant. Should coolant temperature exceed about 230°F (110°C), the switch contacts close, which causes the engine to shut down automatically (Figure 1.5).

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Contents This manual should remain with the unit Introduction Authorized Service Dealer Location‹ Operation and Maintenance ‹ HOW to Obtain ServiceTable of Contents General Hazards ‹ Standards Index Electrical HazardsGenerator Transfer SwitchAutomatic Transfer Switch ATS Mode Engineered Transfer Switch Wire Start GTS ModeGenerator Fuel System ‹ 1.8.1 LOW OIL Pressure Switch‹ 1.8.2 High Coolant Temperature Switch Main Circuit BreakerLifting the Generator UnpackingFuel Consumption SpecificationsAWSF-52-C Coolant Recommendations Before InstallationEngine OIL Recommendations ‹ 2.1.2 Other Published Standards Generator LocationGenerator Mounting Support ‹ 2.1.1 Nfpa StandardsEmergency Circuit Isolation Method Basic Standby Electric SystemTotal Circuit Isolation Method Grounding the GeneratorGenerator AC Neutral Connections Connection Diagram ATS ModeConnection Diagram GTS Mode ‹ 2.11.1 Vented Batteries Battery InstallationPreparation Before START-UP Manual Transfer START-UP Control Console ComponentsBat Red Oil Red Temp Red Speed Red Crank Red Engine Governor Gain AdjustmentsAutomatic Operation Manual Retransfer ShutdownWeekly Exercise Cycle Voltage Regulator Adjustment Control Board DIP Switch SettingsIntake Manifold Procedure Exhaust Manifold ProcedureChecking Fluid Levels Cylinder Head ProcedureCooling System Overload Protection for Engine DC Electrical System‹ 4.8.1 Check Engine OIL Level ‹ 4.7.2 Battery Fluid ‹ 4.8.6 Perform Visual Inspection‹ 4.8.2 Check Battery ‹ 4.7.3 Engine Coolant‹ 4.8.13 Coolant Change Miscellaneous Maintenance‹ 4.8.11 Changing the Engine AIR Cleaner ‹ 4.9.1 Cleaning the Generator‹ 4.9.4 Battery Replacement ‹ 4.9.3 Battery MaintenancePeriodic Replacement Parts Service Maintenance Interval Information Scheduled MaintenanceLevel Maintenance Level Problem Cause Correction Troubleshooting PointsLiquid-cooled 15, 20 and 25 kW Generators Liquid-cooled 15, 20 and 25 kW Generators Electrical Data Electrical Data Electrical Data Electrical Data Electrical Data Electrical Data Electrical Data Electrical Data Page Battery Post Cover Black Support Battery TrayHold Down Battery Assembly Battery TrayTo B Duct Discharge RH AL 2.5L Assy Wire 14AWG 7.5 #0 GRN/YELDoor Battery Compartment Duct Intake MID AL 2.5LPage TOP, Control Panel Switch ROC Dpst 125V SPDSwitch ROC Dpdt ON-OFF-ON Hang TAG 2 Wire Start not ShownPage Harness Ctrl PNL 2.5L Ford AL not Shown 13 17 NUT HEX M10-1.5 G8 YEL CHR Tank Coolant RecoveryEngine 2.5L Ford STARTER, 12 VoltTo Engine Bracket Fuel Regulator Body Carburetor AssemblyCover AIR Cleaner GASKET, AIR Cleaner AdapterLocktight Rotor 390 40KW 1P Direct HSB 3.9L Chrysler Rotor 390 15KW 1P Direct HSB 2.5L FordRotor 390 20KW 1P Direct HSB 2.5L Ford Rotor 390 25KW 1P Direct HSB 2.5L FordSaddle 2 Inch Pipe Muffler OUTPipe Exhaust 2.5L Ford Muffler 2.5L FordHarn GOV 2.5L Ford Housing Governor ConnectorCover Connector Housing ASM Motor StepperRadiator 2.5L Ford HOSE, 2.5L Ford LowerBarbed STR 1/4 NPT X 3/8 ALMInstallation Diagram MANUFACTURER’S Emission Control System Warranty Coverage Your Warranty Rights and ObligationsPURCHASER’S/OWNER’S Warranty Responsibilities Emission Related Parts Include the Following Emission Control System WarrantyThis Warranty Shall not Apply to the Following

005030-0 (15kW), 005031-0 (25kW) specifications

Generac has long been recognized as a leader in backup power solutions, and its 005031-0 (25kW) and 005030-0 (15kW) home standby generators exemplify the brand's commitment to reliability and performance. Designed for residential use, these generators provide peace of mind during outages, ensuring that homes remain powered even in the most challenging conditions.

One of the standout features of both models is their advanced Generac G-Force engine, which is engineered for longevity and impressive power output. The G-Force engine is built from the ground up for generator use, refined to handle the unique demands of continuous operation. This results in a highly durable system that requires little to no maintenance, making it a favored choice for homeowners looking for a reliable energy solution.

Another important characteristic is the True Power technology featured in both generators. This technology delivers clean, stable power that is safe for sensitive electronics and appliances. It ensures that devices such as computers and medical equipment operate smoothly without the risk of damage from power fluctuations. Additionally, the Generac 005031-0 and 005030-0 generators are equipped with the Quiet-Test mode, allowing them to run at lower RPMs during routine weekly self-tests. This innovation significantly reduces the noise produced during tests, making it less disruptive for residents.

Furthermore, these generators come with a user-friendly interface and a mobile link app, enabling homeowners to monitor their generator's performance remotely via a smartphone. This feature enhances convenience, allowing users to receive alerts and notifications about their generator's status, maintenance needs, and operation conditions right from their devices.

Both the 25kW and 15kW models are also designed with a robust transfer switch, which seamlessly shifts power from the grid to the generator in case of any outages. This automatic transfer feature ensures that homes maintain power without needing manual intervention, making them ideal for those who want uninterrupted electricity.

In terms of fuel source, both models operate on natural gas or propane, providing flexibility to homeowners regarding fuel availability and preferences. With excellent warranty options and Generac's reputation for quality, both the 005031-0 (25kW) and 005030-0 (15kW) generators stand as dependable choices for safeguarding homes from the unpredictability of power outages.