Generac Power Systems 04389-3, 04456-3, 04390-3 Introduction, Authorized Dealer Location

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INTRODUCTION

Thank you for purchasing this model of the Guardian product line by Generac Power Systems Inc. This model is a compact, high performance, air-cooled, engine-driven generator designed to automatically supply electrical power to operate critical loads dur- ing a utility power failure.

This unit is factory installed in an all-weather, metal enclosure that is intended exclusively for outdoor instal- lation. This generator will operate using either vapor withdrawn liquid propane (LP) or natural gas (NG).

‹READ THIS MANUAL THOROUGHLY

If any portion of this manual is not understood, contact the nearest Authorized Dealer for starting, operating and servicing procedures.

Throughout this publication, and on tags and decals affixed to the generator, DANGER, WARNING, CAUTION and NOTE blocks are used to alert person- nel to special instructions about a particular opera- tion that may be hazardous if performed incorrectly or carelessly. Observe them carefully. Their defini- tions are as follows:

DANGER

After this heading, read instructions that, if not strictly complied with, will result in serious person- al injury, including death, in addition to property damage.

After this heading, read instructions that, if not strictly complied with, may result in serious person- al injury or property damage.

After this heading, read instructions that, if not strictly complied with, could result in damage to equipment and/or property.

NOTE:

After this heading, read explanatory statements that require special emphasis.

These safety warnings cannot eliminate the haz- ards that they indicate. Common sense and strict compliance with the special instructions while performing the service are essential to preventing accidents.

Four commonly used safety symbols accompany the DANGER, WARNING and CAUTION blocks. The type of information each indicates follows:

This symbol points out important safety infor- mation that, if not followed, could endanger personal safety and/or property of others.

Thisard. symbol points out potential explosion haz-

This symbol points out potential fire hazard. Thishazard.symbol points out potential electrical shock

The operator is responsible for proper and safe use of the equipment. The manufacturer strongly recom- mends that the operator read this Owner's Manual and thoroughly understand all instructions before using this equipment. The manufacturer also strong- ly recommends instructing other users to properly start and operate the unit. This prepares them if they need to operate the equipment in an emergency.

‹CONTENTS

This manual contains pertinent owner’s information, including warranty, electrical diagrams, exploded views and lists of repair parts, for three different models:

•04389-3 – 6 kW NG, 7 kW LP, single-cylinder GH- 410 Engine

•04456-3 – 12 kW NG, 12 kW LP, V-twin GT-990 Engine

•04390-3 – 13 kW NG, 15 kW LP, V-twin GT-990 Engine

‹OPERATION AND MAINTENANCE

It is the operator's responsibility to perform all safety checks, to make sure that all maintenance for safe operation is performed promptly, and to have the equipment checked periodically by an Authorized Dealer. Normal maintenance service and replacement of parts are the responsibility of the owner/operator and, as such, are not considered defects in materials or workmanship within the terms of the warranty. Individual operating habits and usage contribute to the need for maintenance service.

Proper maintenance and care of the generator ensures a minimum number of problems and keep operating expenses at a minimum. See an Authorized Dealer for service aids and accessories.

‹HOW TO OBTAIN SERVICE

When the generator requires servicing or repairs, contact an Authorized Dealer for assistance. Service technicians are factory-trained and are capable of handling all service needs.

When contacting an Authorized Dealer about parts and service, always supply the complete model num- ber and serial number of the unit as given on its data decal, which is located on the generator. See Figure 1.1 or Figure 1.2 in Section 1.6 for decal location.

Model No. ____________ Serial No.______________

AUTHORIZED

DEALER LOCATION

To locate the nearest GUARDIAN AUTHORIZED

DEALER, please call this number:

1-800-333-1322

DEALER LOCATION INFORMATION

CAN BE OBTAINED AT THIS NUMBER or visit

www.guardiangenerators.com.

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Contents US Listed Introduction Authorized Dealer LocationTroubleshooting Post Installation Start-up AdjustmentsMaintenance Introduction Inside Front Cover Warning   Electrical Hazards  ‹ Standards IndexBreaker for Bedrooms UNPACKING/INSPECTIONProtection Systems Generator Gfci‹ 1.5.2 Engine Specifications‹ 1.5.1 Generator Fuel Requirements Recommendations Reconfiguring the Fuel SystemSystem SET LED Fuel Consumption‹ 1.10.1 Generator Location‹ 1.9.2 12KW and 15KW, V-TWIN Engines ‹ 1.10.2 Transfer Switch Battery InstallationBattery 10.2.1 7 kW, 12 kW and 15 kW UnitsElectrical Checks Check Transfer Switch OperationBefore Initial START-UP Generator Tests Under Load Checking Automatic OperationAdjusting the Regulator Natural GAS only Adjustment Screw‹ 2.7.1 7 KW Units Engine Governor Adjustment‹ 2.7.2 12 KW and 15 KW Units ‹ 3.2.1 Auto Position Voltage Regulator AdjustmentBREAK-IN Procedure Sequence of Automatic Operation ‹ 3.3.1 12 VDC Accessory OutletAutomatic Transfer Operation ‹ 3.2.2 OFF Position‹ 3.5.2 Transfer Back to Utility Power Source Manual Transfer Operation‹ 3.7.1 LOW OIL Pressure Switch Setting the Exercise Timer‹ 3.7.2 High Temperature Switch ‹ 3.7.3 Overcrank‹ 3.7.4 Overspeed FusesChecking the Engine OIL Level Changing the OIL Filter ‹ 4.3.2 OIL Change ProcedureChanging the Engine OIL ‹ 4.3.1 Engine OIL RecommendationsBattery Maintenance Spark PlugsValve Clearance Cooling System‹ 4.12.2 Return to Service OUT of Service Procedure‹ 4.12.1 Removal from Service Corrosion ProtectionService Schedule Be performed by the nearest Authorized DealerTroubleshooting Guide Problem Cause CorrectionAir-cooled 7 kW, 12 kW and 15 kW Generators Air-cooled 7 kW, 12 kW and 15 kW Generators Air-cooled 7 kW, 12 kW and 15 kW Generators Electrical Data Customer Connection Battery 1VA Engine Wiring Control Panel BOX Electronic Voltage Regulator Utility Electrical Data Electrical Data Electrical Data Electrical Data ATS N1A N2A Exploded Views and Parts Lists Part NO. QTY. Description Exploded Views and Parts Lists Part NO. QTY Description Exploded Views and Parts Lists QTY Description Exploded Views and Parts Lists COVER, 12 Circuit GTS Load Center 1310 Sleeve 124 125 139 136 135 123 120 137 143 133 134 132 KNOB, AIR Cleaner Exploded Views and Parts Lists QTY 32 31 Stator 12KW Exploded Views and Parts Lists PIN, Piston D20 Exploded Views and Parts Lists SCREW, Taptite M6-1.0X8 Yellow Chrome 7KW Mounting Dimensions PURCHASER’S/OWNER’S Warranty Responsibilities Your Warranty Rights and ObligationsMANUFACTURER’S Emission Control System Warranty Coverage Emission Control System Warranty Emission Related Parts Include the FollowingWarranty Schedule

04389-3, 04456-3, 04390-3 specifications

Generac Power Systems has established itself as a leading name in power generation equipment, and models 04389-3, 04456-3, and 04390-3 exemplify the company’s commitment to reliability and technology. These models are particularly popular among homeowners and businesses that need dependable backup power solutions.

The Generac 04389-3 is a 22 kW standby generator designed to provide seamless power during outages. It boasts a powerful 999cc engine that can handle heavy loads, making it suitable for larger homes or commercial settings. The generator features Generac’s patented True Power Technology, which ensures clean and stable power delivery, making it safe for sensitive electronics. It also comes equipped with an innovative shutdown system that prevents damage during low oil conditions and features a five-year limited warranty for added peace of mind.

Similarly, the 04456-3 model also serves as a robust standby generator, offering 24 kW of power output. This model highlights an advanced alternator that provides a reliable source of energy for running essential appliances like refrigerators, air conditioners, and heating systems. The 04456-3 includes an automatic exercise mode, allowing it to run tests periodically to ensure it’s always ready to operate when needed. Additionally, it utilizes a user-friendly digital controller that simplifies monitoring and operational management.

The Generac 04390-3 model offers a slightly lower output at 20 kW but retains high efficiency and reliability. Like its counterparts, it features an innovative design that operates quietly while delivering consistent power. This model is particularly aimed at residential users who require dependable backup solutions without the noise commonly associated with generators. It incorporates Generac’s Smart Management modules, enabling users to manage power loads effectively and avoid overloading the system.

All three models benefit from Generac’s Mobile Link technology, which enables remote monitoring via mobile devices. This feature allows users to check the status of their generators, including maintenance alerts and operational history, providing a convenient way to manage energy needs. In summary, Generac models 04389-3, 04456-3, and 04390-3 offer cutting-edge features, dependable technology, and robust capabilities, making them an ideal choice for anyone seeking reliable backup power solutions.
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