Generac 004474-1, 004188-1, 004475-1, 004371-2, 004370-2 Service Maintenance Interval Information

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Section 6 — Scheduled Maintenance

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

Following is a recommended maintenance schedule for Generac Guardian small standby and residential genera- tor sets. The established intervals in the schedule are the maximum recommended when the unit is used in an average service application. They will need to be decreased (performed more frequently) if the unit is used in a severe application. Use the unit hour meter or calendar time, whichever occurs first, from the previous mainte- nance interval to determine the next required maintenance interval.

Service Maintenance Interval Information:

The various service maintenance intervals are designated by interval numbers as follows:

1An early inspection of the generator set to insure it is ready to operate when required and to identify any poten- tial problem areas.

Performed monthly or following each 10 hours of operation of the unit and requires approximately .5 man- hours per unit to complete.

This inspection may be performed by the end user providing the following safety steps are taken to prevent the engine from starting automatically without warning:

To prevent injury, perform the following steps in the order indicated before starting any maintenance:

•Disable the generator set from starting and/or connecting to the load by setting the control panel Auto-Off-Manual switch to the “OFF” position.

•Remove the control panel fuse.

•Turn off the battery charger.

•Remove the negative battery cable.

The battery charger must be turned off BEFORE removing the battery cable to prevent an over current condi- tion from burning out sensitive control panel components and circuits.

Following all maintenance, reverse these steps to insure the unit is returned to standby setup for normal operation when required.

2A break-in service inspection of the generator set to insure it is ready to operate and carry the load when required, and to identify any potential problem areas.

Performed ONLY ONCE following the first three months or the first 30 hours of operation after purchase of the unit and requires approximately 2.5 man-hours per unit to complete.

This inspection contains some maintenance tasks which require special tools, equipment, and/or knowledge to accomplish and should be performed only by an authorized Generac Service Dealer.

3An operational inspection of the generator set to insure it is ready to operate and carry the load when required, and to identify any potential problem areas.

Performed semi-annually or following each 50 hours of operation of the unit and requires approximately 1.5 man-hours per unit to complete.

This inspection contains some maintenance tasks which require special tools, equipment, and/or knowledge to accomplish and should be performed only by an authorized Generac Service Dealer.

4A mid-level inspection of the generator set to insure it is ready to operate and carry the load when required, and to identify any potential problem areas.

Performed annually or following each 100 hours of operation of the unit and requires approximately 4.0 man-hours per unit to complete.

This inspection contains some maintenance tasks which require special tools, equipment, and/or knowledge to accomplish and should be performed only by an authorized Generac Service Dealer.

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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 DevicesSpecifications UnpackingLifting 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 MethodTransfer Switch Start Signal Connections Battery InstallationVented Batteries Using a Standard GTS Transfer Switch Preparation Before START-UPPrior 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 Your Warranty Rights and Obligations MANUFACTURER’S Emission Control System Warranty CoveragePURCHASER’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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