Generac 004475-1, 004188-1 Preparation Before START-UP, Using a Standard GTS Transfer Switch

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Section 3 - Operation

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

PREPARATION BEFORE START-UP

The instructions in this section assume that the stand- by generator has been properly installed, serviced, test- ed, adjusted and otherwise prepared for use by a com- petent, qualified installation contractor. Be sure to read the “Safety Rules” on Pages 2 and 3, as well as all other safety information in this manual, before attempting to operate this (and related) equipment.

PRIOR TO INITIAL START-UP

Prior to initially starting the generator, it must be properly prepared for use. Any attempt to crank or start the engine before it has been properly serviced with the recommended types and quanti- ties of engine fluids (oil, coolant, fuel, etc.) may result in an engine failure.

Before starting the generator for the first time, the installer must complete the following procedures. For follow-up maintenance information and/or service inter- vals, please refer to Section 4, “Maintenance.”

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Transfer Switch

If this generator is used to supply power to any electri- cal system normally powered by an electric utility, the National Electrical Code requires that a transfer switch be installed. The transfer switch prevents electrical backfeed between two different electrical systems. (For additional information, see the applicable transfer switch manual for this unit.) The transfer switch, as well as the generator and other standby components, must be properly located and mounted in strict compli- ance with applicable codes, standards and regulations.

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Fuel System

Make sure the fuel supply system to the generator (a) delivers the correct fuel at the correct pressure and (b) is properly purged and leak tested according to code. No fuel leakage is permitted. See “Specifications” (Page 7) for more information.

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Generator Set Lubrication

Check the engine crankcase oil level before operating and add oil to the proper level – the dipstick “FULL” mark. Never operate the engine with the oil level below the dipstick “ADD” mark. See “Specifications” (Page 7) and “Engine Oil Recommendations” (Page 8).

NOTE:

This engine is shipped from the manufacturer with 15W-40 oil. This oil should be changed after 30 hours of operation.

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Engine Coolant

Have the engine cooling system properly filled with the recommended coolant mixture. Check the system for leaks and other problems. See “Specifications” and “Coolant” (Page 7).

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Belt Tension

Check the engine fan belt tension and condition prior to placing the unit into service and at recommended intervals. Belt tension is correct when a force of approx- imately 22 pounds (10 kg), applied midway between pulleys, deflects the belt about 3/8- to 5/8-inch (10 to 16 mm).

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Electrical System

Make sure the generator is properly connected to an approved earth ground and/or ground rod.

Make sure the generator battery is fully charged, prop- erly installed and interconnected, and ready for use.

Check to ensure that there are no loose electrical con- nections. Restrain any loose wires to keep them clear of any moving generator set components.

USING A STANDARD “GTS” TRANSFER SWITCH

When required, the pre-packaged standby generator can be installed with a standard Generac “GTS” type automatic transfer switch.

When you use a standard GTS type transfer switch, it controls automatic operation and automatic transfer as follows:

•Solid state circuits in the transfer switch monitor util- ity power source voltage.

•When utility source voltage drops below a pre-set level, transfer switch action closes the circuit. The engine then cranks and starts as controlled by the pre-pack- aged generator’s Control Module circuit board.

•After the engine starts and when the generator AC output voltage and frequency have reached a pre-set value, transfer switch circuits signal the transfer switch main contacts to actuate to the “Standby” power source side. Generator AC output then powers load circuits.

•When the utility power source voltage is restored above a pre-set level, transfer switch solid state cir- cuits signal the switch main contacts to move back to their utility power source side.

•Following re-transfer back to the utility power source side, transfer switch circuit board action opens the circuit. Engine then shuts down.

NOTE:

If your generator is installed in conjunction with a standard GTS type transfer switch, refer to the appli- cable transfer switch manual for exact operating parameters and timing sequences.

Generac® Power Systems, Inc. 11

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Contents Power SYSTEMS, INC Operation and Maintenance Authorized Service Dealer LocationHOW to Obtain Service IntroductionIntroduction IFC Safety Rules General Hazards Electrical Hazards Generator Transfer SwitchAutomatic System Operation Generator AC Connection SystemsLOW OIL Pressure Switch High Coolant Temperature SwitchLOW Coolant Level Switch Engine Protective DevicesUnpacking SpecificationsLifting the Generator Before Installation Torque SpecificationsFuel Consumption Engine OIL RecommendationsGenerator Location Standby Generator InstallationOther Published Standards Nfpa StandardsTotal Circuit Isolation Method Basic Standby Electric SystemGrounding the Generator Emergency Circuit Isolation MethodBattery Installation Transfer Switch Start Signal ConnectionsVented Batteries Preparation Before START-UP Using a Standard GTS Transfer SwitchPrior to Initial START-UP Control Console Components SET Exercise Time Switch Meter Reading Selector SwitchManual Transfer and Start UP Retransfer and Shutdown Automatic OperationCooling System Engine HeaterOverload Protection for Engine DC Electrical System Checking Fluid LevelsMaintenance OWNER/OPERATOR can Perform Coolant Change Changing the Engine AIR CleanerCleaning the Generator Miscellaneous MaintenanceBattery Battery ReplacementTroubleshooting Points Service Maintenance Interval Information Level Maintenance Level Electrical Data Electrical Data Electrical Data AC Outlet Outlet AC Circuit FED BRACE, Side Ground Wire AssemblyBumper DOOR, EnclosureGenerac Power Systems, Inc Hinge Slip Male LH Washer NylonHinge Slip Female LH Hinge Slip Male RHGenerac Power Systems, Inc Rocker Switch Dpst CMA BOX AssemblySWITCH, Selector AMP/VOLT SWITCH, Toggle DpdtGenerac Power Systems, Inc Harness Wiring 1.5L Switch 6A AMP/V SelectorDECAL, TRANS. Switch Conn Switch Dpst 5 125V SPD RckrGenerac Power Systems, Inc Bracket Coolant Recovery Tank Tank Coolant RecoverySupport Radiator Radiator 1.5LGenerac Power Systems, Inc Guard FAN Venturi 1.5LHose RES 5/8 RIA 250F NUT HEX M6 -1.0 G8 YEL CHRISOLATOR-VIBRATION BASE, MountingISOLATOR, Vibration Flat WASHER-M8Washer Flat M8 Dampener VibrationEarth Strap Washer Shakeproof EXT 5/16 STLMufflr Strap 6IN DIA Muffler W/RAIN ShldElbow 90 DEG 2 NPT Nipple TOE 2 NPT X 4.5 BLK IronNipple TOE 1.5 NPT X 6.5 BL Iron Manifold Exhaust 1.5LPipe Exhaust Flex Pipe ExhaustCover BQ Circuit Breaker Silkscreen P PanelBracket Mounting Circuit Breaker Circuit Breaker 70 X 2 240V 39782 BrktAssy Home Stdby Logic Harness CMA WireDECAL, CMA Label PP Logic ASM 50/60HZBolt Battery Hold Down ASSY,WIRE#16 REDBAR Battery Holddown Battery Post Cover RED+Connector Interface Assembly Housing Governor ConnectorCover Connector Housing Assembly Carburator LinkageGenerac Power Systems, Inc Assy Rotor 10KW Housing BlowerAssy Rotor 15KW Assy Rotor 20KWGenerac Power Systems, Inc Weldment Mounting Base Cover AIR CleanerFlange Fuel Inlet Solenoid GAS FuelGenerac Power Systems, Inc ARM Adjust Alternator Switch OIL PressureGround Wire Starter ENGINE-1.5LInstallation Air Outlet Air Intake Installation Air Intake MANUFACTURER’S Emission Control System Warranty Coverage Your Warranty Rights and ObligationsPURCHASER’S/OWNER’S Warranty Responsibilities Emission Related Parts Include the Following Emission Control System WarrantyThis Warranty Shall not Apply to the Following Warranty Schedule

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.
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