Control Console Components

Section 3 — Operation

Guardian Liquid-cooled 15 kW, 20 kW and 25 kW Generators

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

Figure 3.1 - Liquid-Cooled Generator Panel

HOURMETER

Indicates time the engine-generator has operated, in hours and tenths of hours. Use the hourmeter along with the periodic maintenance schedule for your gener- ator set.

30 AMP

FUSE

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 your unit’s DATA PLATE for rated AC voltage.

AUTO/OFF/MANUAL SWITCH

Use this 3-position switch as follows:

•Set the switch to “Auto” for fully automatic operation. See “Automatic Operation”.

•Set switch to “Manual” position to crank and start the generator engine.

•Set switch to “Off” position to shut down an operat- ing engine. With “Off” selected, operation will not be possible.

With switch set to "auto", engine can crank and start suddenly without warning. Such automatic start up normally occurs when utility source voltage drops below a pre-set level. To prevent possible injury that might be caused by such sudden starts, set AUTO/OFF/MANUAL switch to "off" before working on or around the unit. Then, place a "do not operate" tag on control console.

AC AMMETER

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

AC FREQUENCY METER

Indicates generator AC output frequency in “Hertz” (cycles per second). Frequency is proportional to engine speed. Units with a 4-pole rotor supplies 60 Hertz at 1800 rpm. Units with a 2-pole rotor supplies 60 Hz at 3600 rpm. Frequency reading with no electrical loads connected (no-load condition) should be between 60-62 Hertz.

FAULT INDICATOR LAMP

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

• Low oil pressure	•	Overcrank
• High coolant temperature	•	Overspeed
• Low coolant level

30 AMP FUSE

Fuse protects the control console’s DC control circuit against electrical overload. If the fuse has melted open because of an overload, engine cranking and startup cannot occur. Should you need to replace the fuse, use only an identical 30-amp replacement fuse. (Type AGC)

DC VOLTMETER

The generator is equipped with a belt-driven DC alternator, which maintains battery state of charge when the engine operates. The Control Module Assembly also incorporates a trickle charge circuit which maintains battery state of charge during non-operating periods. Battery voltage should read about 12.5 to 14.5 volts DC. A low battery voltage indicates the battery is discharging.

7.5 AMP INLINE FUSE

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.

12 Generac® Power Systems, Inc.

004371-2, 004188-1, 004474-1, 004475-1, 004370-2 specifications

Generac Power Systems is renowned for its commitment to providing reliable power solutions, and their various models, including the Generac 004189-1, 004370-2, 004475-1, 004474-1, and 004188-1, showcase the company’s innovative engineering and technology. Each of these models is designed to meet diverse energy needs, ensuring homeowners and businesses can maintain power during outages or in remote locations.

The Generac 004189-1 is an essential model in the lineup known for its robust construction and user-friendly interface. It features a powerful engine, ensuring reliable power output and efficient fuel consumption. Additionally, its lightweight design makes it portable, allowing easy relocation to different sites. The model integrates advanced technology for automatic voltage regulation, safeguarding sensitive electronics while operating.

Moving on to the Generac 004370-2, this model emphasizes advanced start-up technology. It is equipped with a reliable electric start feature, minimizing the effort required to power up the generator. Its noise-dampening design significantly reduces sound levels, making it ideal for residential use without causing disturbances to neighbors. The unit also includes a durable metal enclosure that helps protect the generator from the elements and increases its lifespan.

The Generac 004475-1 model stands out for its enhanced fuel efficiency and low emissions. This eco-friendly design adheres to strict emissions regulations, making it a suitable choice for environmentally conscious users. Its intuitive control panel provides easy monitoring of power output, fuel levels, and maintenance needs, ensuring users can efficiently manage their energy requirements.

Similarly, the Generac 004474-1 exemplifies convenience and performance with its dual fuel capability, allowing it to operate on both gasoline and propane. This flexibility ensures users can easily switch fuels based on availability and cost-effectiveness. The model also boasts an extended runtime, capable of powering essential appliances and systems for prolonged periods during outages.

Finally, the Generac 004188-1 emphasizes ease of use, featuring a comprehensive user manual and a straightforward assembly process. The model provides ample power capacity, making it excellent for both emergency back-up and recreational activities. Its compact design allows storage in confined spaces, while its efficient cooling system prevents overheating during extended use.

Overall, these Generac models reflect the company's dedication to innovation, quality, and user satisfaction. With features aimed at enhancing convenience, performance, and environmental responsibility, they cater to the varying power demands of modern users.

Generac 004371-2, 004188-1, 004475-1, 004474-1, 004370-2, 004189-1 Control Console Components

Models: 004371-2 004188-1 004474-1 004475-1 004370-2 004189-1