Generac 004373-3 , 004626-2, 004373-3, 004626-2 owner manual General Hazards

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Important Safety Instructions

Guardian Liquid-cooled 40 kW Generator

 

SAVE THESE INSTRUCTIONS – The manufacturer suggests that these rules for safe

 

!

operation be copied and posted in potential hazard areas. Safety should be stressed to all

!

 

operators and potential operators of this equipment.

 

 

 

 

!

SAVE THESE INSTRUCTIONS – This manual contains important instructions that should be

!

followed during installation and maintenance of the generator and batteries.

 

 

 

!WARNING: !

The engine exhaust from this product contains chemicals known to the state

of California to cause cancer, birth defects or other reproductive harm.

!

WARNING:

!

 

 

 

This product contains or emits chemicals

 

 

known to the state of California to cause

 

cancer, birth defects or other reproductive harm.

Study these SAFETY RULES carefully before installing, operating or servicing this equipment. Become familiar with this Owner’s Manual and with the unit. The gen- erator can operate safely, efficiently and reliably only if it is properly installed, operated and maintained. Many accidents are caused by failing to follow simple and fun- damental rules or precautions.

Generac cannot possibly anticipate every possible circumstance that might involve a hazard. The warn- ings in this manual, and on tags and decals affixed to the unit are, therefore, not all-inclusive. If you use a procedure, work method or operating technique Generac does not specifically recommend, you must satisfy yourself that it is safe for you and others. You also must make sure the procedure, work method or operating technique that is chosen does not render the generator unsafe.

DANGER

Despite the safe design of this generator,

!operating this equipment imprudently, neglecting its maintenance or being careless can cause possible injury or death. Permit only responsible and capable persons to operate or maintain this equipment.

Potentially lethal voltages are generated by these machines. Ensure all steps are taken to render the machine safe before attempting to work on the generator.

Parts of the generator are rotating and/or hot

!during operation. Exercise care near running gen- erators.

! GENERAL HAZARDS !

•For safety reasons, Generac recommends that the installation, initial start-up and maintenance of this equipment is carried out by a Generac/Guardian Authorized Dealer.

•Installation, operation, servicing and repair of this (and related) equipment must always comply with applicable codes, standards, laws and regulations. Adhere strictly to local, state and national electrical and building codes. Comply with regulations the Occupational Safety and Health Administration (OSHA) has established. Also, ensure that the gener- ator is installed, operated and serviced in accordance with the manufacturer’s instructions and recommen- dations. Following installation, do not do anything that might render the unit unsafe or in noncompli- ance with the aforementioned codes, standards, laws and regulations.

•The engine exhaust fumes contain carbon monoxide, which can be DEADLY. This dangerous gas, if breathed in sufficient concentrations, can cause unconsciousness or even death. For that reason, ade- quate ventilation must be provided. Exhaust gases must be piped safely away from any building or enclosure that houses the generator to an area where people, animals, etc., will not be harmed. This exhaust system must be installed properly, in strict compliance with applicable codes and standards.

•Keep hands, feet, clothing, etc., away from drive belts, fans, and other moving or hot parts. Never remove any drive belt or fan guard while the unit is operating.

•Adequate, unobstructed flow of cooling and ventilating air is critical in any room or building housing the gen- erator to prevent buildup of explosive gases and to ensure correct generator operation. Do not alter the installation or permit even partial blockage of ventila- tion provisions, as this can seriously affect safe oper- ation of the generator.

•Keep the area around the generator clean and unclut- tered. Remove any materials that could become haz- ardous.

•When working on this equipment, remain alert at all times. Never work on the equipment when you are physically or mentally fatigued.

2 Generac® Power Systems, Inc.

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Contents Liquid-cooled, Prepackaged Standby Generators Introduction Authorized Dealer LocationIntroduction Inside Front Cover General Hazards Electrical Hazards Prepackaged Transfer Switch UNPACKING/INSPECTIONGenerator Generator AC Connection SystemsMain Circuit Breaker SpecificationsEngine Protective Devices Fuel Requirements Recommendations ‹ 1.9.1 Conversion to LP GAS VaporCoolant Emissions Control System‹ 1.12.1 AIR Fuel Ratio Controller Standby Generator Installation Basic Standby Electric SystemNfpa Standards Other Published StandardsTransfer Switch Start Signal Connections ‹ 2.6.1 PRE-PACKAGED Type SwitchMethod Grounding the GeneratorPreparation Before START-UP Battery Installation‹ 2.7.1 Vented Batteries ‹ 2.8.2 Transfer Switch ‹ 2.8.1 Prior to Initial START-UPUsing the AUTO/OFF/MANUAL Switch Engine Heater Sequence of Automatic Operation‹ 3.2.3 Manual Position Weekly Exercise Cycle Checking the Engine OIL LevelChanging the Engine AIR Cleaner ‹ 4.2.2 OIL and Filter Change ProcedureChanging the Engine OIL and Filter ‹ 4.2.1 Engine OIL Recommendations‹ 4.5.1 Battery Replacement Battery MaintenanceSpark Plugs Miscellaneous Maintenance Cooling SystemOverload Protection for DC Fuse‹ 4.11.1 Removal from Service OUT of Service Procedure‹ 4.11.2 Return to Service Service Schedule SYSTEM/COMPONENT Procedure FrequencyTroubleshooting Guide Problem Cause CorrectionElectrical Data Not Used on Guardian Unit Electrical Data TS1 Generator D4992-A Model No Section 40 kW 0D6974 KW Generators No D6975 27 *28 Drain Pan To Oil On Oil QTY Description Base Frame Assembly M6 Hinge Panel Face Panel BTM & Back Control VDC Panel Face Cover Plate AVR ALT Leads Sensing Wire QTY Flywheel Engine Stator Leads Detail Scroll Washer Lock M12 Exploded Views and Parts Lists Engine 4.3L GM Exploded Views and Parts Lists MOUNT, Engine R & L To Thermostat Housing To Engine Block To Starter Solenoid RED Black To Engine Block Part KIT Radiator Copper Brass DIA. Clamp ASSEMBLY2 Compartment NUT Wing 1/4-20 Nylk To Stepper Motor Support Solenoid NAT GAS Attach to REGULATOR, N/G R600S Exploded Views and Parts Lists Muffler Catalyst 4.3L Assembly Motor Stepper Guardian Liquid-cooled 40 kW Generators MANUFACTURER’S Emission Control System Warranty Coverage Your Warranty Rights and ObligationsPURCHASER’S/OWNER’S Warranty Responsibilities Emission Control System Warranty Emission Related Parts Include the FollowingWarranty Schedule This Warranty Shall not Apply to the Following

004373-3, 004626-2, 004373-3 , 004626-2 specifications

Generac is a leader in the power generation industry, known for its reliable and innovative products. Among its extensive range of offerings, two models stand out: the Generac 004373-3 and the 004626-2. These models represent the cutting edge of home standby generators.

The Generac 004373-3 is designed to provide seamless power during outages, ensuring that homes remain comfortable and functional. One of its main features is the automatic transfer switch, which detects a power outage and activates the generator within seconds. This automatic response eliminates the need for manual intervention, allowing homeowners to go about their lives without interruption.

This model is equipped with a durable engine that runs on liquid propane or natural gas, providing flexibility depending on the availability of fuel sources. The 004373-3 has an impressive power output, capable of powering essential household appliances, including refrigerators, heating systems, and lights. Its compact design allows for easy installation, making it suitable for a variety of home sizes.

On the other hand, the Generac 004626-2 also focuses on providing reliable power but with additional advanced features. One of its key characteristics is the True Power Technology, which delivers clean and stable power, making it ideal for sensitive electronics and appliances. This feature is crucial for households that rely on digital devices, protecting them from fluctuations that could potentially cause damage.

Additionally, the 004626-2 comes with a user-friendly control panel that allows for easy monitoring and adjustments. The model also incorporates Smart Management Technology, which enables users to manage their power consumption effectively. This technology allows homeowners to prioritize the most critical circuits, ensuring essential services remain operational during outages.

Both models emphasize ease of maintenance, with a design that facilitates access to components for servicing. Generac generators are known for meeting high standards of quality, ensuring reliability and longevity. With their advanced technologies and robust features, the Generac 004373-3 and 004626-2 provide peace of mind, allowing homeowners to remain connected and powered, no matter the circumstances. Whether for unexpected outages or planned maintenance, Generac continues to set the standard in home power solutions.
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