INTRODUCTION Thank you for purchasing this model by Generac Power Systems Inc.. This model is a compact, high performance, air-cooled, engine-driven generator 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 enclo- sure that is intended exclusively for outdoor installation.
Introduction ...Inside Front Cover Read This Manual Thoroughly ...IFC Contents ...IFC Operation and Maintenance ...IFC How to Obtain Service ...IFC Authorized Dealer Locator Number ...IFC Safety Rules ...2 Standards Index ...3 Section 1 – General Information ...4 Unpacking/Inspection ...4 Protection Systems ...4 System Set LED ...4 The Generator ...5 Specifications ...6...
Parts of the generator are rotating and/or hot during operation. Exercise care near running generators. GENERAL HAZARDS • For safety reasons, Generac recommends that the installation, initial start-up and maintenance of this equipment is carried out by a Generac Authorized Dealer.
ELECTRICAL HAZARDS • All generators covered by this manual produce dangerous electrical voltages and can cause fatal electrical shock. Utility power delivers extremely high and dangerous voltages to the transfer switch as does the standby generator when it is in opera- tion.
Section 1 — General Information Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators DANGER Only qualified electricians or contractors should attempt such installations, which must comply strictly with applicable codes, standards and regulations. UNPACKING/INSPECTION After unpacking, carefully inspect the contents for damage.
FUEL REQUIREMENTS AND RECOMMENDATIONS With LP gas, use only the vapor withdrawal system. This type of system uses the vapors formed above the liquid fuel in the storage tank. The engine has been fitted with a fuel carburetion system that meets the specifications of the 1997 California Air Resources Board for tamper-proof dual fuel systems.
1.9.2 TRANSFER SWITCH 1.9.2.1 7 kW, 12 kW and 15 kW Units Transfer switches for use with these generators are sold separately and can be purchased from Generac Authorized Dealers. • Install the transfer switch on a firm, sturdy sup- porting structure.
1.10 BATTERY INSTALLATION Fill the battery with the proper electrolyte fluid if nec- essary and have the battery fully charged before installing it. Before installing and connecting the battery, complete the following steps: 1. Set the generator's AUTO/OFF/MANUAL switch to OFF .
Section 2 — Post Installation Start-up and Adjustments Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators The following procedures are to be observed: • Wear full eye protection and protective clothing; • Where electrolyte contacts the skin, wash it off immediately with water;...
8. Connect an accurate AC voltmeter and a frequen- cy meter across transfer switch terminal lugs E1 and E2. Voltage should be 242-252 volts; fre- quency should read about 61-63 Hertz. 9. Connect the AC voltmeter test leads across termi- nal lug E1 and neutral;...
54.2 amps If this procedure or equipment are not available, locate the nearest Generac Guardian Dealer and they can perform the adjustments. A service fee may be charged for this adjustment. If both AC frequency and voltage are correspondingly high or low, adjust the engine governor as follows: 2.7.1...
Section 3 — Operation Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators 8. Turn ON the utility power supply to the transfer switch, which will allow the transfer switch to transfer back to utility power. The unit will con- tinue to run for one minute and then shut down.
D.Utility Voltage Pickup Sensor • This sensor monitors utility power supply volt- age. When that voltage is restored to above 70 percent of the nominal source voltage, a retrans- fer time delay starts timing. E.Retransfer Time Delay • This timer runs for about 15 seconds. •...
This protection also prevents the gener- ator from supplying an output that could potentially damage appliances connected to the generator cir- cuit. Contact the nearest Generac Authorized Dealer if this failure occurs. High Temp Switch failure.
FUSE The generator panel’s 15 amp fuse (Figure 4.1) protects the DC control circuit against overload. The fuse is wired in series with the battery output lead to the panel. If the fuse element has melted open, the engine cannot crank or start.
Section 4 — Maintenance Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators 4.3.2 OIL CHANGE PROCEDURE To change the oil, proceed as follows: 1. Run the engine until it is thoroughly warmed up then shut OFF the engine. 2.
SPARK PLUG(S) Reset the spark plug(s) gap or replace the spark plug(s) as necessary. See Section 4.13 for mainte- nance requirements. 1. Clean the area around the base of the spark plug(s) to keep dirt and debris out of the engine. Clean by scraping or washing using a wire brush and commercial solvent.
Important: If feeling uncomfortable about doing this procedure or the proper tools are not available, please contact the Generac Authorized dealer for service assis- tance. This is a very important step to insure longest life for the engine.
4.10 ATTENTION AFTER SUBMERSION If the generator has been submerged in water, it MUST NOT be started and operated. Following any sub- mersion in water, have a Generac Authorized Dealer thor- oughly clean and dry the generator. 4.11 CORROSION PROTECTION Periodically wash and wax the enclosure using automo- tive type products.
Section 4 — Maintenance Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators 4.13 SERVICE SCHEDULE ATTENTION: It is recommended that all service work be performed by the nearest Generac Authorized Dealer. SYSTEM/COMPONENT X = Action R = Replace as Necessary * = Notify Dealer if Repair is Needed.
There is no transfer to standby after utility source failure. Unit consumes large amounts of oil. *Contact the nearest Generac Authorized Dealer for assistance. Section 5 — Troubleshooting Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators CAUSE 1. Fuse blown 2.
Section 7 — Exploded Views and Parts Lists Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators Enclosure – Drawing No. 0D3416-R PRE PACKAGED UNITS ONLY 44 85 79 80...
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ITEM PART NO.QTY. DESCRIPTION 0C6140 ASSEMBLY, ENCLOSURE BASE 0D1901 ASSEMBLY, ENCLOSURE BASE (7KW) 0C6735 SUPPORT, ROOF FOLDING 0C7061 ENCLOSURE, FRONT 0C7062 ENCLOSURE, EXHAUST SIDE 0C7062A ENCLOSURE, EXHAUST SIDE (7KW) 0C7063 ENCLOSURE, SIDE & BACK 0C7063A ENCLOSURE, SIDE & BACK (7KW) 0C7064 ENCLOSURE, ROOF 0C7065...
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Section 7 — Exploded Views and Parts Lists Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators Control Panel – Drawing No. 0E7974...
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ITEM PART NO. QTY. DESCRIPTION 0E7886A CIRCUIT BREAKER 30A X 2P 240V (7KW) 0E7886C CIRCUIT BREAKER 40A X 2P 240V (8.5KW) 0E7886E CIRCUIT BREAKER 50A X 2P 240V (12KW) 0E7886F CIRCUIT BREAKER 60A X 2P 240V (13KW) 0E7886G CIRCUIT BREAKER 70A X 2P 240V (15KW) 0A1801 ASSEMBLY, BATTERY CHARGER ENGINE 083049...
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Section 7 — Exploded Views and Parts Lists Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators GT-990 Engine – Drawing No. 0D8674-G Part 1...
Owner’s Manual. For warranty purposes, Generac recommends that you retain all receipts covering maintenance on your engine. However, Generac cannot deny warranty solely because of the lack of receipts or for your failure to ensure the completion of all scheduled maintenance.
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Such use voids this ECS Warranty and shall be sufficient grounds for disallowing an ECS Warranty claim. Generac shall not be held liable hereunder for failures of any warranted parts of a Generac engine caused by the use of such an unapproved, add-on, modified, counterfeit and/or “grey market”...
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“EMERGENCY AUTOMATIC STANDBY GENERATORS” For a period of two years from the date of original sale, Generac Power Systems, Inc. (Generac) will, at its option, repair or replace any part which, upon examination, inspection and testing by Generac or a Generac Authorized Warranty Service Dealer, is found to be defective under normal use and service, in accordance with the warranty schedule set forth below.