® Owner’s Manual 3 Phase 60 Hz Air-Cooled Generators 20 kW WARNING This product is not intended to be used in a critical life support application. Failure to adhere to this warning could result in death or serious injury. (000209a) Register your Generac product at: WWW.GENERAC.COM 1-888-GENERAC (888-436-3722) Para español, visita: http://www.generac.com/service-support/product-support-lookup Pour le français, visiter : http://www.generac.
Use this page to record important information about your generator set. Model: Serial: Prod Date Week: Volts: LPV Amps: NG Amps: Hz: Phase: Controller P/N: Record the information found on your unit data label on this page. See General Information for the location of the unit data label. The unit has a label plate affixed to the inside partition, to the left of the control panel console as shown in Figure 2-1. See Operation for directions on how to open the top lid and remove the front panel.
Table of Contents Section 1: Safety Rules & General Information Interface Menu Displays ................................... 11 The LCD Panel ..........................................................11 Introduction ..........................................................1 Menu System Navigation ..........................................12 Read This Manual Thoroughly ....................................1 Setting the Exercise Timer ............................... 14 How to Obtain Service .............
Table of Contents Corrosion Protection .........................................26 Remove From, and Return To Service Procedure ...........................................................26 Remove From Service .............................................. 26 Return to Service ...................................................... 26 Section 5: Troubleshooting / Quick Reference Guide Generator Troubleshooting ..............................27 Quick Reference Guide .....................................
Safety Rules & General Information Section 1: Safety Rules & General Information Introduction DANGER Thank you for purchasing this compact, high performance, air-cooled, engine-driven generator. It is designed to automatically supply electrical power to operate critical loads during a utility power failure. This unit is factory installed in an all-weather, metal enclosure that is intended exclusively for outdoor installation.
Safety Rules & General Information Safety Rules WARNING Study these SAFETY RULES carefully before installing, operating, or servicing this equipment. Become familiar with this owner’s manual and with the unit. The generator can operate safely, efficiently, and reliably only if it is properly installed, operated, and maintained. Many accidents are caused by failing to follow simple and fundamental rules or precautions.
Safety Rules & General Information Electrical Hazards WARNING Environmental Hazard. Always recycle batteries at an official recycling center in accordance with all local laws and regulations. Failure to do so could result in environmental damage, death or serious injury. (000228) WARNING Injury and equipment damage. Do not use generator as a step. Doing so could result in falling, damaged parts, unsafe equipment operation, and could result in death or serious injury. (000216) DANGER Electrocution.
Safety Rules & General Information Fire Hazards Explosion Hazards DANGER WARNING Fire hazard. Do not obstruct cooling and ventilating airflow around the generator. Inadequate ventilation could result in fire hazard, possible equipment damage, death or serious injury. (000217) Explosion and fire.Fuel and vapors are extremely flammable and explosive. No leakage of fuel is permitted. Keep fire and spark away. Failure to do so will result in death or serious injury.
General Information Section 2: General Information The Generator B F C D Q E M J K H A G A I L P O N 003736 Figure 2-1. Components and Control Locations A. Lock with Cover E. Battery Compartment (Battery not supplied) I. Main AC/Control Wiring holes N. Sediment Trap B. Main Line Circuit Breaker (Generator Disconnect) F. Exhaust Enclosure J. K. Oil Fill Cap Oil Filter O. Fuel Regulator P. Fuel Inlet C. Airbox with Air Cleaner G. Status LED Indicators L. Composite Base Q.
General Information Specifications Generator Model 20 kW Rated Voltage 208 Power Factor 0.8 Rated Maximum Load Current (Amps) at Rated Voltage with LP* 69.
General Information Protection Systems The generator may need to run for long periods of time with no operator present to monitor the engine/generator conditions. The generator is equipped with protection systems to automatically shut down the unit to protect against potentially damaging conditions.
General Information Replacement Parts Description 26R Exide Battery 20 kW 0H3421S 0G0767A (RC12YC or equivalent) Spark Plug Oil Filter 070185E Air Filter 0J8478 Control Panel Fuse 0D7178T Transfer Switch Fuses 073590A Accessories NOTE: Performance enhancing accessories are available for air-cooled generators. Contact an IASD or visit www.generac.com for additional information on replacement parts and accessories. See also http:// www.ordertree.com/generac/air-cooled-homestandby-generators/.
Operation Section 3: Operation Site Prep Verification Removing the Front Access Panel The generator must be installed so that airflow into and out of the generator is not impeded. Verify that all shrubs or tall grasses within 3 ft (0.91 m) of the intake and discharge louvers on the sides of the enclosure have been removed. Install the generator on high ground where water levels will not rise and endanger it. This unit should not operate in or be subjected to standing water.
Operation A A B C D 001797 Figure 3-3. Side Lock Location and Front Panel Removal B D A C 002961 Figure 3-4. Intake Side Panel Removal LED Indicator Lights See Figure 3-5. Three LEDs are visible behind a translucent lens on the generator side panel. These LEDs indicate the operating status of the generator. • Yellow LED MAINTENANCE light (C) is illuminated when scheduled maintenance is due. NOTE: Yellow MAINTENANCE or WARNING LED may be on at the same time as either the Red or Green LED.
Operation Using the AUTO/OFF/MANUAL Interface B A C Button Description of Operation AUTO This button activates fully automatic system operation. It allows the unit to automatically start and exercise the generator according to the exercise timer (see Setting the Exercise Timer). The Green LED on this button will flash if running in Automatic mode and the connected loads are running under generator power (utility is lost).
Operation Menu System Navigation To get to the MENU, use the ESCAPE button from any page. You may need to press the ESCAPE button several times before reaching the MENU page. Navigate to the desired menu by using the ↑/↓ buttons. When the desired menu is displayed and flashing, press the ENTER button. EVOLUTION 2.0 HSB MENU MAP Switched to “OFF” Hours of Protection 0 (H) Note: Menu functions and features may vary depending on unit model and firmware revision.
Operation Current Date/Time 02/14/16 07:40 UP ARROW = + ESC ENTER DOWN ARROW = Run Hours (H) - 0.0 ESC ESC MAINT: ENTER DEALER ENTER Run Hrs Scheduled Maint.
Operation Setting the Exercise Timer This generator is equipped with a configurable exercise timer. Configuration can be performed directly at the control panel or though the Mobile Link™ application. There are two settings for the exercise timer: Day/Time: The generator will start and exercise for the period defined, on the day of the week and at the time of day specified. During this exercise period, the unit runs for approximately five minutes then shuts down. Table 3-1.
Operation Manual Transfer Operation DANGER 7. Set the MLCB (generator disconnect) to ON (CLOSED). The standby power source now powers the loads. Electrocution. Do not manually transfer under load. Disconnect transfer switch from all power sources prior to manual transfer. Failure to do so will result in death or serious injury, and equipment damage. (000132) Prior to automatic operation, manually exercise the transfer switch to verify that there is no interference with proper operation of the mechanism.
Operation Transfer to Utility Power Source When utility power has been restored, transfer to utility source and shut down the generator. Proceed as follows to manually transfer to utility power and shut down the generator: 1. Set the MLCB (generator disconnect) to OFF (OPEN). 2. Run engine for two minutes at no-load to stabilize the internal temperature. 3. Press the control panel OFF button. The engine will shut down. 4. Verify that utility power supply to the transfer switch is turned off. 5.
Operation Cold Smart Start The Cold Smart Start feature is enabled at the factory, but can be disabled in the EDIT menu. The generator will monitor ambient temperature when Cold Smart Start is enabled. The warm-up delay will be adjusted based on prevailing conditions. If the ambient temperature is below a fixed temperature (based on model) upon startup in AUTO mode, the generator will warm up for 30 seconds. This allows the engine to warm before a load is applied.
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Maintenance Section 4: Maintenance Maintenance Regular maintenance will improve performance and extend engine/equipment life. Generac Power Systems, Inc. recommends that all maintenance work be performed by an Independent Authorized Service Dealer (IASD). Regular maintenance, replacement, or repair of the emissions control devices and systems may be performed by any repair shop or person of the owner’s choosing.
Maintenance Service Schedule Service Daily If Running Continuously or Before Each Use Check enclosure louvers for dirt and debris * ● Check lines and connections for fuel or oil leaks ● Check engine oil level ● Every Year Check for water intrusion ** ● Check battery condition, electrolyte level, and state of charge ● Replace engine oil and oil filter † Schedule A Every Two Years or 200 Hours Schedule B Every Four Years or 400 Hours ● ● ● ● Replace engine air filter ● Clean; Check gap;
Maintenance Checking Engine Oil Level WARNING Risk of burns. Allow engine to cool before draining oil or coolant. Failure to do so could result in death or serious injury. (000139) WARNING Skin irritation. Avoid prolonged or repeated contact with used motor oil. Used motor oil has been shown to cause skin cancer in laboratory animals. Thoroughly wash exposed areas with soap and water. (000210) CAUTION Engine damage. Verify proper type and quantity of engine oil prior to starting engine.
Maintenance Changing the Oil and Oil Filter Servicing the Air Cleaner Proceed as follows to change the oil and oil filter: Proceed as follows to service the air cleaner: 1. Press the MANUAL button on the control panel to start the engine, and run it until it is thoroughly warmed up. Press the control panel OFF button to shut down the engine. 2. See Figure 4-2. A few minutes after the engine stops, and when it has cooled slightly, lift the lid and remove the front panel.
Maintenance NOTE: Allow engine to cool before adjusting valve clearance. 1. Remove spark plug wire(s) and position wire(s) away from plugs. 2. Remove spark plug(s). 3. Remove the four screws attaching the valve cover. Remove and discard gasket. 4. Make sure the piston is at top dead center (TDC) of its compression stroke (both valves closed). 000211 5. Loosen the rocker jam nut (C) using a 13 mm wrench. Figure 4-4. Spark Plug Gap Measurement .
Maintenance Battery Maintenance WARNING The battery should be regularly inspected per the Service Schedule. Contact an IASD for assistance if necessary. Proceed as follows to inspect the battery: Explosion. Batteries emit explosive gases while charging. Keep fire and spark away. Wear protective gear when working with batteries. Failure to do so could result in death or serious injury. (000137a) 1.
Maintenance • Wash down spilled electrolyte with an acid neutralizing agent. A common practice is to use a solution of 1 lb (454 g) bicarbonate of soda to 1 gal (3.8 L) of water. Add bicarbonate of soda solution until the evidence of reaction (foaming) has ceased. Flush the resulting liquid with water and dry the area completely. • DO NOT smoke when near the battery. • DO NOT cause flame or spark in the battery area.
Maintenance Attention After Submersion DO NOT start or operate the generator if it has been submerged in water. Have an IASD thoroughly clean, dry, and inspect the generator following any submersion in water. If the structure (home) has been flooded, it should be inspected by a certified electrician to verify there won’t be any electrical problems during generator operation or when utility power is returned.
Troubleshooting / Quick Reference Guide Section 5: Troubleshooting / Quick Reference Guide Generator Troubleshooting Problem Engine will not crank. Cause 1. Blown fuse. Correction 2. Loose, corroded, or defective battery cables. 3. Defective starter contact. 4. Defective starter motor. 5. Discharged battery. 1. Correct short circuit condition by replacing 7.5 amp fuse in generator control panel. Contact an Independent Authorized Service Dealer (IASD) if fuse continues to blow. 2.
Troubleshooting / Quick Reference Guide Quick Reference Guide To clear an active alarm, press the OFF button, the ENTER button, and then press AUTO. If the alarm reoccurs, contact an IASD. Active Alarm NONE LED Problem Things to Check FLASHING Unit running in AUTO but Check MLCB. GREEN no power in house. Solution Check MLCB. If it is ON, contact an IASD. HIGH TEMPERATURE RED Unit shuts down during operation. Check the LEDs / screen for alarms.
Troubleshooting / Quick Reference Guide Active Alarm LED Problem Things to Check Solution MISWIRE RED Unit will not start in AUTO with utility loss. Check the LEDs / screen for alarms. Contact an IASD. OVERVOLTAGE RED Unit will not start in AUTO with utility loss. Check the LEDs / screen for alarms. Contact an IASD. LOW BATTERY YELLOW Clear alarm.
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Part No. 10000003882 Rev. B 02/14/17 ©2017 Generac Power Systems, Inc. All rights reserved Specifications are subject to change without notice. No reproduction allowed in any form without prior written consent from Generac Power Systems, Inc. Generac Power Systems, Inc. S45 W29290 Hwy. 59 Waukesha, WI 53189 1-888-GENERAC (1-888-436-3722) www.generac.
