Generac Power Systems 004626-5, 004373-6 owner manual Using the AUTO/OFF/MANUAL Switch

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Section 3 — Operation

Guardian Liquid-cooled 40 kW Generator

3.1CONTROL CONSOLE COMPONENTS

The components of a liquid-cooled generator control console (Figure 3.1) are as follows:

Figure 3.1 – Control Console

‹3.1.5 HOURMETER

This indicates the time the engine-generator has operat- ed, in hours and tenths of hours. Use the hourmeter along with the periodic maintenance schedule for the generator set.

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‹3.1.1 AC VOLTMETER

The voltmeter displays generator AC output voltage dur- ing operation. Voltage is regulated by a solid-state volt- age regulator and is proportional to AC frequency. Refer to the unit’s DATA PLATE for rated AC voltage.

‹3.1.2 AC AMMETER

This indicates current draw of connected electrical loads during operation. DO NOT EXCEED THE UNIT’S RATED MAXIMUM CONTINUOUS CURRENT. Refer to the unit DATA PLATE.

‹3.1.6 AUTO/OFF/MANUAL SWITCH

See Section 3.2.

‹3.1.7 FAULT INDICATOR LAMP

This lamp goes ON when one or more of the following engine faults occurs and when engine shuts down.

•

Low oil pressure

•

High coolant temperature

•

Low coolant level

•

Overcrank

•Overspeed

‹3.1.8 15-AMP FUSE

This fuse protects the control console’s DC control cir- cuit against electrical overload. If the fuse has melted open because of an overload, engine cranking and start- up cannot occur. Replace the fuse with an identical AGC 15-amp replacement fuse.

‹3.1.9 7.5 AMP INLINE FUSE (NOT SHOWN)

This inline fuse is connected in the 15A line that runs between the AUTO/OFF/MANUAL switch and position 10 of the 076009A PCB. This fuse protects the start, fuel, field boost, and transfer outputs from the PCB and will open if there is excessive current draw on any one of these outputs.

‹3.1.3 AC FREQUENCY METER

This indicates generator AC output frequency in Hertz (cycles per second). Frequency is proportional to engine speed. Units with a four-pole rotor, supply 60 Hertz at 1,800 rpm. The frequency reading with no electrical loads connected (no-load condition) should be between 60-62 Hertz.

‹3.1.4 DC VOLTMETER

The generator is equipped with a belt-driven DC alter- nator, which maintains battery state of charge when the engine operates. The control module assembly (CMA) also incorporates a trickle charge circuit that maintains battery state of charge during nonoperating periods. Battery voltage should read approximately12.5 to 14.5 volts DC. A low battery voltage indicates the battery is discharging.

‹3.1.10 VOLTAGE-PHASE SELECTOR SWITCH

This switch permits selection between either line-to-line or line-to-neutral voltage and amperage readings on the console AC voltmeter and AC ammeter.

‹3.1.11 SET EXERCISE TIME SWITCH

This switch allows to program the generator to start and exercise automatically. (See Section 3.6)

3.2USING THE AUTO/OFF/MANUAL SWITCH

‹3.2.1 “AUTO” POSITION

Selecting this switch position activates fully automatic system operation. It also allows the unit to start and exercise the engine every seven days with the setting of the exercise timer.

12 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 Drawing No KW Generators No D6975 EC1 ACT 12 19 11 3529 QTY Description ONE Assembly M6 Hinge Panel Face Panel BTM & Back Control Exploded Views and Parts Lists CHASSIS, Universal 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 To Valve Cover To Intake Manifold Support Solenoid NAT GAS Attach to FAN Scroll 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

004373-6, 004626-5 specifications

Generac Power Systems has established itself as a leader in the field of backup and portable power solutions, and their models 004626-5 and 004373-6 are prime examples of their dedication to innovation and reliability. These models are designed to cater to a variety of power needs, making them essential assets for homeowners and businesses alike.

The 004626-5 is a robust home standby generator, renowned for its powerful performance and automatic transfer switch capabilities. This model features Generac's G-Force engine, which is specifically engineered for high performance and longevity, ensuring that it can handle the demands of powering a home during outages. It boasts a multi-language LCD display that provides real-time system status updates, allowing users to monitor performance with ease. Additionally, the 004626-5 is equipped with an integrated wi-fi system, enabling remote monitoring through the Mobile Link app. This feature gives users the convenience of checking their generator's status from anywhere, ensuring peace of mind.

On the other hand, the 004373-6 is a portable generator designed for versatility and convenience. This model is lightweight and easily transportable, making it ideal for outdoor activities, job sites, or emergency power supply during outages. Powered by a reliable OHV engine, the 004373-6 delivers impressive power output while maintaining fuel efficiency. Its ergonomic design includes a transport handle and never-flat wheels, allowing for easy maneuverability. The model also features Generac’s PowerRush technology, which provides over 50% more starting capacity, making it capable of handling larger appliances with ease.

Both models are designed with safety features in mind. The 004626-5 comes with a durable weather-resistant enclosure, protecting it from the elements, while the 004373-6 includes a low-oil shutdown feature to prevent engine damage.

In summary, Generac Power Systems continues to set the benchmark for reliability and innovation in power solutions with models 004626-5 and 004373-6. With their advanced technologies, user-friendly features, and unparalleled performance, these generators are engineered to provide power when it’s needed most, ensuring a seamless transition during outages and enhancing convenience for users across various settings.
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