Section 3 — Operation

Guardian Liquid-cooled 40 kW Generator

3.1 CONTROL CONSOLE COMPONENTS

‹ 3.1.6 AUTO/OFF/MANUAL SWITCH

The components of a liquid-cooled generator control

See Section 3.2.

console (Figure 3.1) are as follows:

 

Figure 3.1 – Control Console

15

‹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.

‹3.1.1 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.

‹3.1.3 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.

‹3.1.9 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 76009A 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.

‹3.1.10 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, page 14)

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.

‹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 your generator set.

12 Generac® Power Systems, Inc.

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Generac 004373-3 , 004626-2, 004373-3, 004626-2 owner manual Using the AUTO/OFF/MANUAL Switch
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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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