Generac Locate the Nearest Dealer for Your Generator Service

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INTRODUCTION

Thank you for purchasing the Guardian product line by Generac Power Systems. This model is a compact, high performance, liquid-cooled, engine-driven gen- erator designed to automatically supply electrical power to operate critical loads during a utility power failure.

This unit is factory installed in an all-weather, metal enclosure that is intended exclusively for outdoor installation.

‹READ THIS MANUAL THOROUGHLY

If any portion of this manual is not understood, contact the nearest Generac/Guardian 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 operation that may be hazardous if performed incorrectly or carelessly. Observe them carefully. Their definitions are as follows:

DANGER

After this heading, read instructions that, if not strictly complied with, will result in personal injury or property damage.

After this heading, read instructions that, if not strictly complied with, may result in personal 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 hazards that they indicate. Common sense and strict compli- ance 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 is as follows:

This symbol points out important safety informa- ! tion that, if not followed, could endanger personal

safety and/or property.

This symbol points out potential explosion hazard.

This symbol points out potential fire hazard.

This symbol points out potential electrical shock hazard.

The operator is responsible for proper and safe use of the equipment. Generac strongly recommends that the operator read this Owner's Manual and thor- oughly understand all instructions before using this equipment. Generac also strongly 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 Guardian models:

0043736 and 0046265.

‹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 a Generac/ Guardian Authorized Dealer. Normal maintenance service and replacement of maintenance 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 mainte- nance service.

Proper maintenance and care of the generator ensure a minimum number of problems and keep operating expenses at a minimum. See a Generac/Guardian Authorized Dealer for service aids and accessories.

‹HOW TO OBTAIN SERVICE

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

When contacting a Generac/Guardian Authorized Dealer about parts and service, always supply the complete model number and serial number of the unit as given on its data decal, which is located on the generator.

Model No. ____________ Serial No. ______________

AUTHORIZED

DEALER LOCATION

To locate the nearest GENERAC/GUARDIAN

AUTHORIZED DEALER, please call this number:

1-800-333-1322

DEALER LOCATION INFORMATION

CAN BE OBTAINED AT THIS NUMBER.

Generac® Power Systems, Inc.

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Contents Liquid-cooled, Prepackaged Standby Generators Models Introduction Authorized Dealer LocationInstallation Diagram General Hazards Electrical Hazards Generator Prepackaged Transfer SwitchUNPACKING/INSPECTION Generator AC Connection SystemsEngine Protective Devices SpecificationsMain Circuit Breaker ‹ 1.9.1 Conversion to LP GAS Vapor Fuel Requirements Recommendations‹ 1.8.2 Generator and Load Compatibility ‹ 1.12.1 AIR Fuel Ratio Controller Emissions Control SystemCoolant Nfpa Standards Standby Generator InstallationBasic Standby Electric System Other Published StandardsMethod Transfer Switch Start Signal Connections‹ 2.6.1 PRE-PACKAGED Type Switch Grounding the GeneratorBattery Installation ‹ 2.7.1 Vented BatteriesPreparation Before START-UP Using the AUTO/OFF/MANUAL Switch ‹ 3.2.3 Manual Position Sequence of Automatic OperationEngine Heater Weekly Exercise Cycle Checking the Engine OIL LevelChanging the Engine OIL and Filter Changing the Engine AIR Cleaner‹ 4.2.2 OIL and Filter Change Procedure ‹ 4.2.1 Engine OIL RecommendationsSpark Plugs Battery Maintenance‹ 4.5.1 Battery Replacement Cooling SystemDC Fuse Miscellaneous MaintenanceOverload Protection for Engine Coolant‹ 4.11.2 Return to Service OUT of Service Procedure‹ 4.11.1 Removal from Service Service Schedule SYSTEM/COMPONENT Procedure FrequencyTroubleshooting Guide Problem Cause CorrectionInstallation Diagram TS1 Generator D4992-A Guardian Liquid- Panel 4.3L Drawing No Section Wiring Diagram Control Panel Model No KW Generators No D6975 EC1 ACT 18 12 19 11 3529 QTY Description Base Frame Assembly M6 Hinge Panel Face Panel BTM & Back Control Exploded Views and Parts Lists Cover Plate AVR Exploded Views and Parts Lists QTY To Engine Flywheel Washer Lock M12 Exploded Views and Parts Lists Engine 4.3L GM Exploded Views and Parts Lists MOUNT, Engine R & L KIT Radiator Copper Brass DIA. Clamp Assembly 2 Compartment To Engine Front NUT Wing 1/4-20 Nylk To Stepper Motor Support Solenoid NAT GAS Assembly Elbow 90D 3/4NPT Exploded Views and Parts Lists Muffler Catalyst 4.3L Assembly Motor Stepper To Thermostat Housing Guardian Liquid-cooled 40 kW Generators Guardian Liquid-cooled 40 kW Generators 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 This Warranty Shall not Apply to the Following