Generac Power Systems 30, 20, 25 owner manual Installation, Preparation Before START-UP

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Standby Generator Sets

Installation

INSTALLATION

‹PRIOR TO INITIAL START-UP

Refer to the separate “Installation Guide” supplied with the unit.

PREPARATION BEFORE START-UP

The instructions in this section assume that the standby generator has been properly installed, ser- viced, tested, adjusted and otherwise prepared for use by a competent, qualified installation contractor. Be sure to read the “Safety Rules”, as well as all other safety information in this manual, before attempting to operate this (and related) equipment.

Before starting the generator for the first time, the installer must complete the following procedures. For follow-up maintenance information and/or service intervals, please refer to the “Maintenance” section and the “Service Schedule”.

‹TRANSFER SWITCH

If this generator is used to supply power to any elec- trical system normally powered by an electric utility, the National Electrical Code requires that a transfer switch be installed. The transfer switch prevents elec- trical backfeed between two different electrical sys- tems. (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 compliance with applicable codes, standards and regulations.

‹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” for more information.

‹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” and “Engine Oil Recommendations”.

NOTE:

This engine is shipped from the manufacturer with “break-in” oil. This oil should be changed after 30 hours of operation.

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 quantities of engine fluids (oil, coolant, fuel, etc.) may result in an engine failure.

‹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” sections.

‹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 approximately 22 pounds (10 kg), applied midway between pulleys, deflects the belt about 3/8- to 5/8- inch (10 to 16 mm).

‹ELECTRICAL SYSTEM

Make sure the generator is properly connected to an approved earth ground.

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

NOTE:

Battery charger must be connected to 120 VAC, 15 amp circuit to operate.

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.

INITIAL INSPECTION FOR GENSET STARTUP

Inspect for the following.

•Freight Damage.

•Manuals present.

•Fluid Levels (Oil, coolant, battery, Gear Drive).

•Correct fuel piping.

•Adequate air flow, clearances and ventilation per installation drawings and applicable codes.

•Correct AC and DC wire size, connections and grounding. Control and communication wiring to/ from the transfer switch must be run in a separate conduit from the AC power leads.

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Contents 6L 20/25/30 kW Models Standby Generator Sets Table of Contents  Warning   Electrical Hazards  ‹ HOW to Obtain Service ‹ Operation and MaintenanceIntroduction ‹ Read this Manual Thoroughly‹ Data Label Identification RecordEngine OIL Recommendations Equipment DescriptionCoolant Recommendations Engine Protective Devices ‹ Fuel Requirements Fuel System‹ Natural GAS Fuel System ‹ LP Fuel SystemSpecifications ‹ Cold Weather KIT ‹ Reconfiguring the Fuel System‹ FOUR-LEAD, SINGLE-PHASE Stator Alternator Power Winding Connections‹ 3-PHASE Alternators Generator AC Lead ConnectionsPreparation Before START-UP InstallationInitial Inspection for Genset Startup ‹ Preparation for START-UP START-UP ChecklistGenerator Control Operation Operating Unit with Manual Transfer Switch‹ Engine START-UP and Transfer ‹ Retransfer and ShutdownCooling System Maintenance Performed by Service FacilitiesChecking Fluid Levels ‹ Check Battery ‹ Battery Fluid‹ Exercise System ‹ Inspect Cooling System‹ Changing Engine OIL ‹ Changing the Engine AIR Cleaner ‹ Coolant Change‹ Spark Plugs Miscellaneous Maintenance Service Maintenance Interval Information Service ScheduleLevel Maintenance Level Problem Cause Correction Troubleshooting GuideStandby Generator Sets Standby Generator Sets Standby Generator Sets Standby Generator Sets Page Housing Blower LG Pilot Page Screw Phtt M4-0.7 X 12 ZYC Page Components Included in 0G4577E Page Radiator Support LH Side 1.6L Page Mounting Base 1.6L 2007 C1 Page Battery TRAY, C1 & C2 Page Engine Generac 1.6L NG Page ASM Motor Stepper Page Elbow 90D 3/4 NPT Page Rear Intake Wrap 1.6L C1 Page Muffler C1 Page Page Page Page Page Page Page Page Page Page Page Page Page Page 04/07 a .Rev BackPg001

25, 30, 20 specifications

Generac Power Systems is a leading manufacturer of backup power generation products and tools, known for their reliability and innovation. Among their diverse lineup are the Generac 20kW, 25kW, and 30kW home standby generators. These models are designed to provide seamless power during an outage, allowing homeowners to maintain their everyday activities without interruption.

The Generac 20kW generator is particularly popular for residential use. It can power essential circuits as well as larger appliances, making it an ideal choice for homes with moderate electricity needs. One of its standout features is the Smart Management Module, which allows homeowners to manage energy consumption effectively, ensuring that they can run necessary appliances without overwhelming the system. Additionally, the 20kW generator is equipped with a durable enclosure, offering long-lasting protection against the elements.

Moving up in capacity, the Generac 25kW model caters to homes with higher electricity demands. This generator combines efficiency with strength, providing enough power for a wider range of home appliances and systems. It features a TruePower Technology that delivers clean power, crucial for sensitive electronics. Moreover, the 25kW model operates quietly, contributing to a comfortable home environment even during power outages.

The Generac 30kW generator is designed for larger homes or light commercial applications. It provides an impressive power output while maintaining high efficiency. Its features include advanced digital control, allowing for easy monitoring and maintenance. The 30kW model also offers an automatic transfer switch, which ensures that power is restored quickly and safely when utilities fail.

All three models utilize Generac's G-Force engine, known for its low maintenance requirements and high performance. They come with a five-year limited warranty, providing peace of mind for users. Furthermore, with Wi-Fi monitoring capabilities, homeowners can keep track of their generator's status from anywhere, ensuring they are always prepared for any power interruption.

In summary, the Generac 20kW, 25kW, and 30kW generators are excellent options for homeowners seeking reliable backup power. Their advanced features, durable construction, and efficient operation make them stand out in the market. Whether for essential home use or larger applications, Generac's lineup delivers dependable performance and innovative technology.
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