Owner’s Manual Automatic Standby Generator 8 kW to 22 kW n NOT INTENDED FOR USE IN CRITICAL LIFE SUPPORT APPLICATIONS. n ONLY QUALIFIED ELECTRICIANS OR CONTRACTORS SHOULD ATTEMPT n INSTALLATION. DEADLY EXHAUST FUMES! OUTDOOR INSTALLATION ONLY! To locate in Spanish, go to http://www.generac.com/service‐support/product‐support‐lookup To locate in French, go to http://www.generac.com/service‐support/product‐support‐lookup Reference all appropriate documentation. This manual should remain with the unit.
Use this page to record important information about your generator set. Record the information found on your unit data label on this page. For the location of the unit data label, see Section 2 General Information. The unit has a label plate affixed to the inside partition, to the left of the control panel console as shown in Figures 2-1, 2-2, and 2-3. For directions on how to open the top lid and remove the front panel, see Section 3 Operation.
Table of Contents Frequently Asked Questions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv Section 1 — Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1 — General Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FREQUENTLY ASKED QUESTIONS This list of Frequently Asked Questions (FAQs) are the frequently asked questions that pertain to ALL Home Standby models. Some questions may not be applicable to the model(s) covered in this publication. Please review the Safety Section of your product’s Owners or Installation Manual before operating your Home Standby Generator.
MAINTENANCE & OIL INFORMATION Q: Can I perform maintenance myself? A: Always check your owner’s manual to confirm specific maintenance intervals for your particular model. Anyone can perform maintenance, but we recommend a sale or service dealer, as some aspects are very technical. Dealers can also make sure everything else is in order. Most units with an OHVI engine will require maintenance every two years or after 200 hours of use.
GENERAL Q: Are extended warranties available? A: Extended limited warranties are available for our home standby and commercial generators. (This does not include the CorePower™ Series, EcoGen, portables or power washers. It must be purchase from an authorized sales/ service dealer within the first year of ownership. Talk with your dealer for more details.
Section 1 Safety INTRODUCTION: Thank you for purchasing this compact, high performance, air-cooled, engine-driven stationary automatic standby generator set. Every effort was made to make sure that the information and instructions in this manual were both accurate and current at the time the manual was written. However, the manufacturer reserves the right to change, alter or otherwise improve this product or manual at any time without prior notice.
1.1 — General Safety Study these safety rules carefully before 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. The manufacturer cannot anticipate every possible circumstance that might involve a hazard.
1.3 — Exhaust Hazards • Generator engine exhaust contains DEADLY carbon monoxide, an odorless, colorless, poisonous gas. Breathing carbon monoxide can cause dizziness, throbbing temples, nausea, muscular twitching, headache, vomiting, weakness, sleepiness, inability to think clearly, fainting, unconsciousness or even death. If any carbon monoxide poisoning symptom is experienced, move into fresh air and immediately seek medical attention. • This generator is designed for OUTDOOR installation ONLY.
+ 4 If this generator is used to power electrical load circuits normally powered by a utility power source, it is required by code to install a transfer switch. The transfer switch must effectively isolate the electrical system from the utility distribution system when the generator is operating (NEC 702). Failure to isolate an electrical system by such means will result in damage to the generator and also may result in injury or death to utility power workers due to backfeed of electrical energy.
General Information Section 2 2.
DATA LABEL (SEE SAMPLE) OIL DIPSTICK AIR FILTER EXHAUST ENCLOSURE CONTROL PANEL CIRCUIT BREAKERS FUEL INLET (BACK) FUEL REGULATOR COMPOSITE BASE OIL FILTER OIL FILL CAP BATTERY COMPARTMENT Figure 2-3: GT-990/GT-999 Engines, 16-22 kW Units 2.2 — Protection Systems The generator may have to run for long periods of time with no operator present to monitor the engine/generator conditions.
2.3 — Emission Information The U.S. Environmental Protection Agency (EPA) requires that this generator comply with exhaust emission standards. This generator is certified to meet the applicable EPA emission levels, and is certified for use as a stationary engine for standby power generation. Any other use may be a violation of federal and/or local laws.
2.4 — Specifications 2.4.1 — Generator Model 8 kW 11 kW Rated Voltage Rated Maximum Load Current (Amps) at 240 Volts (LP)* Main Circuit Breaker 16 kW 20 kW 22 kW 240 33.3 45.8 66.6 83.3 91.7 35 Amp 50 Amp 65 Amp 90 Amp 100 Amp Phase 1 Rated AC Frequency 60 Hz Battery Requirement Group 26R, 12 Volts and 525 CCA Minimum (Generac Part No. 0H3421S) Weight (unit only in lbs./kilos) Enclosure Normal Operating Range 360/163.3 407/184.6 471/213.6 451/204.
2.4.3 — Fuel Requirements The engine has been fitted with a dual fuel carburetion system. The unit will run on natural gas or LP gas (vapor), but it has been factory set to run on natural gas. The fuel system will be configured for the available fuel source during installation. Recommended fuels should have a btu content of at least 1,000 Btus per cubic foot (37.26 megajoules per cubic meter) for natural gas, or at least 2,500 Btus per cubic foot (93.15 megajoules per cubic meter) for LP gas (vapor).
Accessory Description Wireless Local Monitor Completely wireless and battery powered, the Wireless Local Monitor provides you with instant status without ever leaving the house. Status lights (red, yellow and green) alert owners when the generator needs attention. Magnetic backing permits refrigerator mounting and gives a 600 foot line of sight communication. Extended Warranty Coverage Extend your generator’s warranty coverage by purchasing the 5 year extended warranty coverage.
Section 3 Operation 3.1 — Control Panel Interface * The control panel on this unit is intended to only be operated by qualified service personnel. The Control panel interface is located under the lid of the enclosure. Before attempting to lift the lid of the enclosure, verify that both left and right side locks are unlocked. To remove the front cover, lift the cover straight up to disengage the side hooks, then tilt and lift it away from the unit.
Figure 3-2: Generator Control Panel 3.2 — Using the Auto/Off/Manual Buttons Button Description of Operation Auto Selecting this button activates fully automatic system operation. Automatic operation allows the unit to automatically start and exercise the generator according to the exercise timer (see the Setting the Exercise Timer section). Off This button shuts down the generator and also prevents automatic operation and exercise of the unit. Manual This button will crank and start the generator.
Figure 3-3: Navigation Menu Automatic Standby Generator Owner’s Manual 13 Alarm Message(s) "High Engine Temp.
3.4 — Automatic Transfer Operation To select automatic operation: 1. Make sure the transfer switch main contacts are set to their UTILITY position (loads connected to the utility power source). 2. Be sure that normal UTILITY power source voltage is available to transfer switch terminal lugs N1 and N2. 3. Press the AUTO button on the Control Panel Interface. 4. Set the Main Circuit Breaker (Generator Disconnect) to its ON (Closed) position.
3.5 — Turning the Generator Off When Operating Under Load NOTE: Important! To turn the generator off during prolonged utility outages to perform maintenance or conserve fuel, follow these simple, but important steps: To turn the generator OFF (while running in AUTO and online): 1. Turn OFF (or OPEN) the main Utility disconnect. 2. Turn OFF (or OPEN) the Main Line Circuit Breaker (MLCB) on the generator. and allow the generator to run for 1 minute to cool down. 3. Turn the generator OFF.
3.6.2— Transfer Back to Utility Power Source When utility power has been restored, transfer back to utility source and shut down the generator. To manually transfer back to utility power and shut down the generator: 1. Set the Main Circuit Breaker (Generator Disconnect) to its OFF (OPEN) position. 2. Allow the engine to run for 2 minutes at no-load to stabilize the internal temperatures. 3. Press the Control Panel OFF button. The engine should shut down. 4.
3.7 — Side Compartment Local codes may require this compartment to be locked. A hasp is provided so the owner/operator can secure the compartment with his or her own padlock. Check local codes for side compartment locking requirements. LED INDICATOR LIGHTS 120V GFCI OUTLET 15 Amp OUTLET BREAKER MAIN CIRCUIT BREAKER Figure 3-6: Open Side Compartment 3.7.1— Main Circuit Breaker (Generator Disconnect) This is a 2-pole breaker rated according to relevant specifications. 3.7.
3.9 — Setting the Exercise Timer This generator is equipped with a configurable exercise timer. There are two settings for the exercise timer. One is Day/Time. Once it is set, 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 5 or 12 minutes, depending on the model, and then shuts down. The other is for the exercise frequency (how often the exercise will take place).
3200 Low Speed Exercise PrŽĮůĞ - 16 to 20 kW Generators Exerccise Speed (RPM) 3000 2800 2600 2400 2200 2000 0 sec 5s 10 s 1 min 5 min Exercise Time Figure 3-8: Low Speed Exercise Profile - 16-20 kW units Automatic Standby Generator Owner’s Manual 19
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Section 4 Maintenance NOTE: Proper maintenance and proper and safe operation is crucial to the life of the generator. Genuine Generac parts MUST be used to ensure warranty coverage NOTE: Since most maintenance alerts occur at the same time (most have two year intervals), only one will appear at any one time. Clearing one will cause the next active alert to be displayed. * All service work to this generator must be performed by a qualified service person only. 4.
4.2.1— Maintenance Log 1. Battery inspection and charge check (recommended every year (1) for the life of the battery) NOTE: Check electrolyte level (unsealed batteries only) every 6 months. Dates Performed: 2. Oil, oil filter and air filter replacement (recommended after the first 25 hours after installation and every 200 hours or 2 years, whichever occurs first) NOTE: Spark plug replacement (recommended every 4 years or 400 hours, whichever occurs first). Dates Performed: 3.
4.3.1— Engine Oil Recommendations To maintain the warranty, genuine Generac replacement parts MUST be used, including Generac oil kits (which include an oil and air filter). Generac oil kits can be obtained through an Authorized Dealer or purchased on-line. To purchase on-line, access the maintenance kits page through www.generac.com or directly at shop.generac.com. Follow the prompts to enter delivery information and complete the purchase.
Figure 4-2: Oil Filter and Drain Location 4.4 — Changing the Engine Air Cleaner 1. With the generator shut down, lift the lid and remove the front panel. 2. Remove the cover clips and air cleaner cover (11-22 kW), or disengage the wire clip and open the air cleaner access door (8 kW). 3. Pull out the old air filter and discard. 4. Thoroughly clean the air cleaner enclosure of any dust or debris. 5. Install a new air cleaner. 6.
4.6 — Valve Lash Adjustment After the first 25 hours of operation and then after every 400 hours of operation, check the valve clearance. Adjust if necessary. Important: Please contact the Dealer for service assistance. This is a very important step to ensure longest life for the engine. To check valve clearance: • The engine should be cool before checking. If valve clearance is 0.002 - 0.004 in (0.05 - 0.1 mm), adjustment is not needed. • Remove spark plug wires and position wires away from plugs.
Jam Nut Pivot Ball Stud Rocker Arm Valve Stem Figure 4-4: Valve Clearance Adjustment 4.7 — Battery Maintenance The battery should be regularly inspected per the Service Schedule: 1. With the generator shut down, lift the lid and remove the front panel. 2. Inspect the battery posts and cables for tightness and corrosion. Tighten and clean as necessary. 3. Check the battery fluid level of unsealed batteries, and if necessary, fill with distilled water only. DO NOT use tap water.
Do not open or mutilate the battery. Released electrolyte has been known to be harmful to the skin and eyes, and to be toxic. The electrolyte is a dilute sulfuric acid that is harmful to the skin and eyes. It is electrically conductive and corrosive. Strictly observe the following precautions: • Wear full eye protection and protective clothing. • Where electrolyte contacts the skin, wash it off immediately with water.
11. Remove the battery and store it in a cool, dry room on a wooden board. Never store the battery on any concrete or earthen floor. 12. Clean and wipe down the entire generator. 4.10.2— Return to Service To return the unit to service after storage: 1. Verify that utility power is turned off. 2. Check the tag on the engine for oil viscosity and classification. If necessary, drain and refill with proper oil. 3. Check the state of the battery.
Section 5 Troubleshooting Problem Cause Correction The engine will not crank. 1. Fuse blown. 1. 2. 2. 3. 4. 5. Loose, corroded or defective battery cables. Defective starter contact. Defective starter motor. Dead Battery. 3. 4. 5. Correct short circuit condition by replacing 7.5 Amp fuse in generator control panel. Tighten, clean or replace as necessary.* *See #2. *See #2. Charge or replace battery. The engine cranks but will not start. 1. 2. 3. 4. Out of fuel. Defective fuel solenoid (FS).
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Section 6 Active Alarm NONE Quick Reference Guide Things to Check Problem LED Solution Unit running in AUTO but no power in house. GREEN Check MLCB. Check MLCB. Contact servicing dealer if MLCB is in the ON position. HIGH TEMPERATURE Unit shuts down during operation. RED Check the LEDs/Screen for alarms. Check ventilation around the intake, exhaust and rear of generator. Contact serving dealer if no obstruction is found. OVERLOAD REMOVE LOAD Unit shuts down during operation.
Problem LED Things to Check STEPPER OVERCURRENT Unit will not start in AUTO with utility loss. RED Check the LEDs/Screen for alarms. Contact servicing dealer. MISWIRE Unit will not start in AUTO with utility loss. RED Check the LEDs/Screen for alarms. Contact servicing dealer. OVERVOLTAGE Unit will not start in AUTO with utility loss. RED Check the LEDs/Screen for alarms. Contact servicing dealer. Check screen for additional information. Clear alarm.
Part No. 0K5801 Rev. A 04/17/2014 Printed in USA © 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) generac.
