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Resumen del manual
12. When testing under load is complete, turn OFF electrical loads. 13. Set the generator's main circuit breaker to its OFF (or open) position. 14. Let the engine run at no-load for a few minutes. 15. Set the AUTO/OFF/MANUAL switch to OFF. The engine should shut down. 2.5 CHECKING AUTOMATIC OPERATION To check the system for proper automatic operation, proceed as follows: 1. Check that the AUTO/OFF/MANUAL switch is set to OFF. 2. Turn OFF the UTILITY power supply to the transfer switch, using the means provided (such as a UTILITY main line circuit breaker). 3. Manually set the transfer switch to the UTILITY position, i.e., load terminals connected to the UTILITY power source side. 4. Turn ON the UTILITY power supply to the transfer switch, using the means provided (such as a UTILITY main line circuit breaker). 5. Set the AUTO/OFF/MANUAL switch to AUTO. The system is now ready for automatic operation. 6. Turn OFF the UTILITY power supply to the transfer switch. With the AUTO/OFF/MANUAL switch at AUTO, the engine should crank and start when the utility source power is turned OFF. After starting, the transfer switch should connect load circuits to the standby side. Let the system go through its entire automatic sequence of operation. With the generator running and loads powered by generator AC output, turn ON the UTILITY power supply to the transfer switch. The following should occur: • After about six seconds, the switch should transfer loads back to the UTILITY power source. • About one minute after retransfer, the engine should shut down. 2.6 ADJUSTING THE REGULATOR (NATURAL GAS ONLY) Although the generator has been factory set to provide maximum power, it may be necessary in some areas to adjust this setting. Because natural gas has different BTU or power content across the country the engine may not perform as designed. If experiencing engine problems at high or full load conditions follow these steps. It will require a frequency meter to perform this procedure. 1. Turn off UTILITY power to the main distribution panel in the house. This can be done by switching the service main breaker to the off or open position. 2. Allow the generator to start. Before loading the generator, confirm that the no load frequency ,with the roof open and door off, is set at 63-63.5 Hz. Transfer load to emergency circuits. Generac® Power Systems, Inc. 11 Section 2 — Post Installation Start-up and Adjustments Air-cooled 8.5 kW Generator 3. Turn on appliances, lights, pumps, etc., that are on the emergency circuits in an attempt to fully load the generator. Be cautious not to overload the generator. Use the following chart as a guide: Unit 120 Volts 240 Volts 8.5 kW 70.8 amps 35.4 amps 4. When full load has been achieved. Connect a frequency meter to the output lugs of the generator’s main line circuit breaker. 5. The fuel regulator is fitted with two adjustment screws. While watching the frequency meter, slowly turn the adjustment screws clockwise or counterclockwise one at a time until the highest frequency is read on the meter. (Figures 2.1 and 2.2). Figure 2.1 — Dual Fuel Regulators V-twin Adjustment Screw (Both Sides) Set Pin (Both Sides) 6. When the highest frequency is reached maximum power has been set. From this point, turn both adjustment screws 1/4 turn clockwise. The regulator is now set. Figure 2.2 — Placement of Regulator Adjustment Screw 7. Turn UTILITY power to the main distribution panel back on. This can be done by switching the service main breaker to the on or closed position. Allow the generator to shut down. 12 Generac® Power Systems, Inc. ! Do not make any unnecessary adjustments. Factory settings are correct for most applications. However, when making adjustments, be careful to avoid overspeeding the engine. If this procedure or equipment are not available, locate the nearest Generac Dealer and they can perform the adjustments. NOTE: A service fee may be charged for this adjustment. 2.7 ENGINE GOVERNOR ADJUSTMENT If both AC frequency and voltage are correspondingly high or low, adjust the engine governor as follows: 1. Loosen governor clamp bolt (Figure 2.3). Figure 2.3 — V-twin Engine Governor Adjustment Governor Clamp Bolt Governor Shaft (Rotate Clockwise) Idle Spring No Load Idle Adjustment Screw 2. Completely remove the idle spring. 3. With governor arm at wide open throttle position, rotate governor shaft fully clockwise. Tighten clamp bolt to 84 inch-pounds. 4. Start unit and apply full load. Use full load speed adjust screw (Figure 2.4) to adjust frequency to 58 Hz. 5. Remove load, stop engine, loosen the idle adjust screw and reconnect the idle spring. 6. Using a hand, push the governor arm to the closed throttle position. Make sure the idle spring does not stretch at all. 7. Restart the unit. 8. Slowly turn the idle adjust screw to adjust the no- load idle frequency to 63-63.5 Hz. 9. The governor is now set. Generac® Power Systems, Inc. 13 Section 3 — Operation Air-cooled 8.5 kW Generator Figure 2...