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This symbol points out important safety informa- INTRODUCTION ! tion that, if not followed, could endanger personal Thank you for purchasing this model by Generac safety and/or property of you and others. Power Systems Inc.. This model is a compact, high performance, air-cooled, engine-driven generator This symbol points out potential explosion hazard. designed to automatically supply electrical power to operate critical loads during a utility power failure. This symbol points out potential fire
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Table of Contents Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators 3.2.2 “Off” Position....................................14 Introduction ........................Inside Front Cover Read This Manual Thoroughly ........................IFC 3.2.3 “Manual” Position ............................14 Contents ..........................................................IFC 3.3 Automatic Transfer Operation ....................14 Operation and Maintenance ............................IFC 3.4 Sequence of Au
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IMPORTANT SAFETY INSTRUCTIONS Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators SAVE THESE INSTRUCTIONS – The manufacturer suggests that these rules for safe operation be copied and posted near the unit’s installation site. Safety should be stressed to ! ! all operators and potential operators of this equipment. ! ! ! ! WARNING: GENERAL HAZARDS The engine exhaust from this product For safety reasons, Generac recommends contains chemicals known to the state of California to cause cancer, bi
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IMPORTANT SAFETY INSTRUCTIONS Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators Keep a fire extinguisher near the generator at all times. Extinguishers rated “ABC” by the National ELECTRICAL HAZARDS Fire Protection Association are appropriate for use on the standby electric system. Keep the extin- All generators covered by this manual produce dangerous electrical voltages and can cause fatal guisher properly charged and be familiar with its use. If you have any question pertaining to fire
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Section 1 — General Information Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators 1.2 PROTECTION SYSTEMS DANGER Unlike an automobile engine, the generator may have Only qualified electricians or contractors should to run for long periods of time with no operator pres- ! attempt such installations, which must comply ent to monitor engine conditions. For that reason, the strictly with applicable codes, standards and engine is equipped with the following systems that regulations. protect it agai
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Section 1 — General Information Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators 1.4 YOUR GENERATOR Figure 1.1 – 7 kW, Single Cylinder GH-410 Engine Control Panel Data Decal Exhaust Enclosure Air Filter Fuel Regulator Battery Compartment Oil Filter Figure 1.2 – 12 kW/15 kW, V-twin GT-990 Engine Data Control Decal Panel Oil Dipstick Air Filter Exhaust Enclosure Fuel Regulator Battery Compartment Oil Filter 5
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Section 1 — General Information Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators 1.5 SPECIFICATIONS 1.5.1 GENERATOR Model 04758 Model 04759 Model 04760 Rated Max. Continuous Power Capacity (Watts*) 6,000 NG/7,000 LP 12,000 NG/12,000 LP 13,000 NG/15,000 LP† Rated Voltage 120/240 120/240 120/240 Rated Max. Continuous Load Current (Amps) 120 Volts + 50.0 NG/58.3 LP 100.0 NG/100.0 LP 108.3 NG/125.0 LP 240 Volts 25.0 NG/29.2 LP 50.0 NG/50.0 LP 54.2 NG/62.5 LP Main Line Circuit Breaker 30 Amp 50
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Section 1 — General Information Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators 3. Disconnect wire #0 and wire #14 from the gas 1.6 FUEL REQUIREMENTS solenoid located on the top of the demand regu- AND RECOMMENDATIONS lator. With LP gas, use only the vapor withdrawal 4. Remove the demand regulator by rotating coun- system. This type of system uses the vapors formed terclockwise. above the liquid fuel in the storage tank. 5. Remove the brass hose fitting from the outlet port of the demand r
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Section 1 — General Information Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators 3. Remove the small hose clamp and hose from the 1.9 LOCATION fuel regulator. It may be necessary to pry the hose 1.9.1 GENERATOR off of the brass fitting using a screw driver to gen- ◆ tly lift up the hose edge. Install the generator set, in its protective enclosure, 4. Remove the brass hose fitting screwed into the outdoors, where adequate cooling and ventilating air fuel regulator. is always available. Consid
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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: 2.2 CHECK TRANSFER SWITCH Wear full eye protection and protective clothing; OPERATION Where electrolyte contacts the skin, wash it off Refer to Section 3.5 (Page 15), of the owner’s manual immediately with water; for manual operation procedures. Where electrolyte contacts the eyes, immediately flush thoroughly with water and seek medical
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Section 2 — Post Installation Start-up and Adjustments Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators 8. Connect an accurate AC voltmeter and a frequen- 8. Turn ON electrical loads. Apply an electrical load cy meter across transfer switch terminal lugs E1 equal to the full rated wattage/amperage capacity and E2. Voltage should be 242-252 volts; fre- of the installed generator. quency should read about 61-63 Hertz. 9. Connect an accurate AC voltmeter and a frequen- 9. Connect the AC voltmet
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Section 3 — Operation Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators D.Utility Voltage Pickup Sensor Figure 3.2 – Manual Transfer Switch Operation 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. At end of a 15-second delay, circuit board action de-energizes the transfer relay in the transfer swit
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n e s o o L Section 3 — Operation Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators Figure 3.3 – Low Oil Pressure and 3.6 SETTING THE EXERCISE TIMER High Temperature Switches Your generator is equipped with an exercise timer. Once it is set, the generator will start and exercise Low Oil Switch High Temp Switch once every seven days, on the day of the week and at the time of day you complete the following sequence. During this exercise period, the unit runs for approx- imately 12 minutes and
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