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• 2.11.7 ELECTRICAL SYSTEM Make sure the generator is properly connected to an approved earth ground and/or ground rod. Section 3 - Operation Guardian 40kW Liquid-cooled Generators Make sure the generator battery is fully charged, properly installed and interconnected, and ready for use. Check to ensure that there are no loose electrical connections. Restrain any loose wires to keep them clear of any moving generator set components. 3.1 USING AN ENGINEERED “GTS” TRANSFER SWITCH When required, the pre-packaged standby generator can be installed with an engineered Generac “GTS” type automatic transfer switch. In this application, the GTS is responsible for utility sensing, weekly exercising, and load transferring. Position two of the four-position dip switch is used to turn over this control to the GTS. Pos2 ON — GTS Application • The control board will NOT monitor utility. • The control board will NOT perform a weekly exercise. (The five red LEDs will not flash in this mode.) • The control board will NOT activate the transfer output. • The control board WILL monitor all engine conditions and shut down on all the faults listed in this document. Pos2 OFF — ATS Application (Included switch) • The control board will perform all of the automatic features listed in this document. • The two-wire start connections should NOT be used. GTS Mode Operation When in GTS mode, the control board will respond as follows based on the AUTO/OFF/MANUAL switch position. OFF — The generator will not start and run in this position. MANUAL — The control board will start and run the generator whenever the switch is in the manual position. AUTO — The control board will monitor the two-wire start circuit. When a two-wire start is issued the control board will immediately start and run the generator. Whe the two-wire start is removed the control board will immediately stop the generator. NOTE: If the generator is installed in conjunction with an engineered GTS type transfer switch, refer to the applicable transfer switch manual for exact operating parameters and timing sequences. 3.2 CONTROL CONSOLE COMPONENTS The components of a home standby generator control console (Figure 3.1) are as follows: Figure 3.1 - Home Standby Generator Panel EUSUU FF EUSUU F (SEE OWNER'S MANUAL FOR COMPLETE LED DETAILS) 5 FLASHING RED LED'S = EXERCISER NOT SET FLASHING GREEN LED = NO UTILITY SENSE TO SET EXERCISER TIME 1) PLACE AUTO/OFF/MANUAL SWITCH TO AUTO POSITION. (IN AUTO MODE ONLY) SOLID GREEN LED = SYSTEM READY, UTILITY POWER ON OFF EXERCISE TIME ON SET LED INDICATORS: RED LED'S = INDIVIDUAL FAULT MANUAL OFF AUTO 0E7194 OVER CRANK RED LED SET EXECISER GREEN LED TIME SWITCH AUTO/OFF/MANUAL SWITCH 4A FUSE BATTERY 15A FUSE CHARGER MAIN POWER • 3.2.1 AUTO/OFF/MANUAL SWITCH Use this three-position switch as follows: • Set the switch to AUTO for fully automatic operation. See “Automatic Operation” (Section 3.5). • Set switch to MANUAL position to crank and start the generator engine. • Set switch to OFF position to shut down an operating engine. With OFF selected, operation will not be possible. DANGER ! 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. • 3.2.2 FAULT INDICATOR LEDS These LEDs turn ON when one of the following engine faults occurs and the engine shuts down. • Low Oil Pressure • Overcrank • Low Battery • Overspeed/RPM Sensor Loss • High Coolant Temperature/Low Coolant Level See Section 1.7 for further explanation of engine protection functions. Generac® Power Systems, Inc. 13 14 Generac® Power Systems, Inc. 3.2.3 15 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. If the fuse needs to be replaced, use only an identical 15-amp replacement fuse. (Type AGC) 3.2.4 4.0 AMP INLINE FUSE This fuse protects the battery charger against electrical overload. If the fuse needs to be replaced, use only an identical 4 amp replacement fuse (type AG). NOTE: This fuse will not remove the + battery input power from the PCB when it opens. This means the exercise timer will not be reset. 3.2.5 SET EXERCISE TIME SWITCH This switch allows programming the generator to start and exercise automatically. “See Weekly Exercise Cycle.” 3.2.6 SYSTEM READY LED The System Ready LED (green) has two main proposes. First, the LED will be ON when the AUTO/OFF/MANUAL switch is in the AUTO position, UTILITY is present, and there are no system alarms. This ON state indicates the system is fully ready for automatic operation. The system ready LED will be OFF when the switch is in the MANUAL or OFF positions. The system ready LED...

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