Page 2 - INTRODUCTION; This symbol points out potential explosion hazard.; DANGER
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 ...
Page 3 - Table of Contents; Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators; Section 2 – Post Installation Start-up
Generac® Power Systems, Inc. 1 Table of Contents Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators Introduction ........................Inside Front Cover Read This Manual Thoroughly ........................IFCContents ..........................................................IFCOperation and Mai...
Page 4 - Owner’s Manual; GENERAL HAZARDS
2 Generac ® Power Systems, Inc. Study these SAFETY RULES carefully beforeinstalling, operating or servicing this equipment.Become familiar with this Owner’s Manual and with the unit. The generator can operate safely, efficientlyand reliably only if it is properly installed, operatedand maintained. M...
Page 5 - STANDARDS INDEX; IMPORTANT SAFETY INSTRUCTIONS
ELECTRICAL HAZARDS • All generators covered by this manual produce dangerous electrical voltages and can cause fatalelectrical shock. Utility power delivers extremelyhigh and dangerous voltages to the transfer switchas does the standby generator when it is in opera-tion. Avoid contact with bare wire...
Page 6 - outdoor installation only; PROTECTION SYSTEMS; Section 1 — General Information
Only qualified electricians or contractors shouldattempt such installations, which must complystrictly with applicable codes, standards andregulations. 1.1 UNPACKING/INSPECTION After unpacking, carefully inspect the contents for damage. • This standby generator set has been factory sup- plied with a...
Page 7 - GENERATOR
Section 1 — General Information Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators 1.4 THE GENERATOR Control Panel Battery Compartment Fuel Inlet Air Filter ExhaustEnclosure Oil Filter Data Decal Fuel Regulator Oil Check/Fill ControlPanel Air Filter ExhaustEnclosure Battery Compartment Fuel Inlet ...
Page 9 - FUEL CONSUMPTION; Figure 1.3 – Demand Regulator; Full Load
1.6 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 carburetionsystem that meets the specifications of the 1997California Air Resource...
Page 10 - LOCATION
3. Remove the small hose clamp and hose from the fuel regulator. It may be necessary to pry the hoseoff of the brass fitting using a screw driver to gen-tly lift up the hose edge. 4. Remove the brass hose fitting screwed into the fuel regulator. 5. Locate and identify the brass idle jet. This will b...
Page 11 - BATTERY INSTALLATION; Figure 1.5 – Battery Cable Connections; • Disconnect charging source prior to connecting or dis-
1.10 BATTERY INSTALLATION Fill the battery with the proper electrolyte fluid if nec-essary and have the battery fully charged beforeinstalling it. Before installing and connecting the battery, completethe following steps: 1. Set the generator's AUTO/OFF/MANUAL switch to OFF. 2. Turn off utility powe...
Page 12 - BEFORE INITIAL START-UP; Section 2 — Post Installation Start-up and Adjustments
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; • Where electrolyte contacts the eyes, immediately flush thoroughly with water and seek medicalattention; and • Spilled electrolyt...
Page 13 - GENERATOR TESTS UNDER LOAD
8. Connect an accurate AC voltmeter and a frequen- cy meter across transfer switch terminal lugs E1and 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; then across E2 and neu-tral. In both case...
Page 14 - A service fee may be charged for this adjustment.; ENGINE GOVERNOR ADJUSTMENT; KW UNITS; Section 3 — Operation; Unit
2.6 ADJUSTING THE REGULATOR(NATURAL GAS ONLY) Although the generator has been factory set to pro-vide maximum power, it may be necessary in someareas to adjust this setting. Because natural gas hasdifferent BTU or power content across the countrythe engine may not perform as designed. If experiencin...
Page 15 - Figure 2.3 — Engine Governor Adjustment; Start unit and apply full load. Use full load speed; Figure 2.4 — Full Load Speed Adjust Screw; Turn OFF the utility power supply to the transfer
Section 3 — Operation Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators Figure 2.3 — Engine Governor Adjustment 2.7.2 12 KW AND 15 KW UNITS 1. Loosen governor clamp bolt (See Figure 2.3).2. Completely remove the idle spring.3. With governor arm at wide open throttle position, rotate governor shaf...
Page 16 - Figure 3.1 – Generator Control Panel; AUTOMATIC TRANSFER
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 totransfer back to utility power. The unit will con-tinue to run for one minute and then shut down. 9. Allow the unit to cool.10...
Page 17 - MANUAL TRANSFER OPERATION; POWER SOURCE; Figure 3.2 – Manual Transfer Switch Operation; SOURCE
D. Utility Voltage Pickup Sensor • This sensor monitors utility power supply volt- age. When that voltage is restored to above 70percent 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 dela...
Page 18 - SETTING THE EXERCISE TIMER; Hold down the set timer switch until the genera-; LOW OIL PRESSURE SWITCH; Figure 3.3 – Low Oil Pressure and; OVERCRANK; Approximately 90 seconds total; OVERSPEED
3.6 SETTING THE EXERCISE TIMER The generator is equipped with an exercise timer.Once it is set, the generator will start and exerciseonce every seven days, on the day of the week and atthe time of day the following sequence is completed.During this exercise period, the unit runs for approx-imately 1...
Page 19 - FUSE; Figure 4.1 – Generator Control Panel; Start the generator by moving the Auto/; CHANGING THE ENGINE OIL; Oil Dipstick and Fill; Section 4 — Maintenance
4.1 FUSE The generator panel’s 15 amp fuse (Figure 4.1) protectsthe DC control circuit against overload. The fuse iswired in series with the battery output lead to the panel.If the fuse element has melted open, the engine cannotcrank or start. Replace the fuse using only an identical15-amp replaceme...
Page 20 - Figure 4.4 – Oil Drain Hose and Filter; CHANGING THE OIL FILTER; GENERATORS; Figure 4.6 — 7 kW, Engine Air Cleaner Location; Cover
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. Immediately after the engine shuts OFF, pull the oil drain hose (Figure 4.4) free of its retainingclip. Remove the cap from the hose and drain theoil into...
Page 21 - Figure 4.8 – Setting the Spark Plug Gap; BATTERY MAINTENANCE
4.6 SPARK PLUG(S) Reset the spark plug(s) gap or replace the sparkplug(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 brushand commercial solve...
Page 22 - ADJUSTING VALVE CLEARANCE; If feeling uncomfortable about doing this; COOLING SYSTEM; Figure 4.9 – Cooling Vent Locations
4.8 ADJUSTING VALVE CLEARANCE After the first 50 hours of operation, adjust the valveclearance in the engine. Important: If feeling uncomfortable about doing this procedure or the proper tools are not available, pleasecontact the Generac Authorized dealer for service assis-tance. This is a very impo...
Page 23 - ATTENTION AFTER SUBMERSION; MUST NOT; CORROSION PROTECTION
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 au...
Page 24 - SERVICE SCHEDULE; ATTENTION: It is recommended that all service work
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 PROCEDURE FREQUENCY X = Action Inspect Change Clean W = Weekly R = Replace as ...
Page 25 - Section 5 — Troubleshooting; GUIDE; PROBLEM; *Contact the nearest Generac Authorized Dealer for assistance.
Section 5 — Troubleshooting Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators 5.1 TROUBLESHOOTING GUIDE PROBLEM CAUSE CORRECTION The engine will not crank. 1. Fuse blown 1. Replace 15A fuse on generator control panel. 2. Loose, corroded or defective 2. Tighten, clean or replace battery cables as ...
Page 26 - Section 6 — Electrical Data
Section 6 — Electrical Data Guardian Air-cooled 7 kW, 12 kW and 15 kW GeneratorsWiring Diagram – 12 & 15 kW – Drawing No. 0D8500-B TX - TRANSFORMER , 16 Va c 56 V A & 16 Va c 1 V A (DUAL SEC . ) 0 CUSTOMER SUPPLIED BLACK BATTERY 12 V LOP HTO 0 SP2 SP1 IM2 86 85 IM1 D D DIAGRAM KEY DSW - PCB ...
Page 34 - Section 7 — Exploded Views and Parts Lists
23 36 24 37 49 35 26 46 49 2 43 49 43 32 34 18 50 7 4 35 25 51 15 48 21 1 90 91 93 13 42 39 10 3 93 25 35 14 88 54 9 8 27 35 1 49 49 11 50 16 17 1 5 47 19 12 6 31 44 30 29 28 87 86 41 40 55 57 56 58 52 49 20 52 72 60 44 62 64 66 59 71 69 68 71 68 69 38 73 75 46 74 76 82 77 80 82 79 80 81 48 44 85 84...
Page 43 - ITEM
Section 7 — Exploded Views and Parts Lists Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators 7 kW Generator – Drawing No. 0D3504-D ITEM PART NO. QTY. DESCRIPTION 1 0C6 93 4 1 A D A PTO R , E N GI N E 2 0C 993 5H 1 S T A TO R 3 0C 993 4H 1 R OTO R 4 0C604 3A 1 C ARR IE R , R E AR BE AR I N G 5 0C8...
Page 52 - Section 8 — Mounting Dimensions
Section 8 — Mounting Dimensions Guardian Air-cooled 7 kW, 12 kW and 15 kW GeneratorsDrawing No. 0D3739-B T M6PEM-TM6PM6PEM PE REAR VIEW L EFT S IDE VIEW TRANSFER SWITCH R IG HT S IDE VIE W F R O NT VIEW AIR NTAKE (IF SUPPLIED ) "D O N O T LIFT BY THE R OO F" L IFTIN G H O LE S 4- CO RNER S Ø...
Page 53 - Section 9 — Notes
Section 9 — Notes Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators Generac® Power Systems, Inc. 51
Page 54 - Section 10 – Warranty; CALIFORNIA AND FEDERAL EMISSION CONTROL WARRANTY STATEMENT; YOUR WARRANTY RIGHTS AND OBLIGATIONS; only; ATTENTION WARRANTY DEPARTMENT
Section 10 – Warranty Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators NOTE: This Emission Control Warranty Statement pertains to this product only IF the generator size is 15 kW or below. CALIFORNIA AND FEDERAL EMISSION CONTROL WARRANTY STATEMENT YOUR WARRANTY RIGHTS AND OBLIGATIONS The Califor...
Page 55 - EMISSION CONTROL SYSTEM WARRANTY; EMISSION RELATED PARTS INCLUDE THE FOLLOWING:
Section 10 – Warranty Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators EMISSION CONTROL SYSTEM WARRANTY Emission Control System Warranty (ECS Warranty) for 1997 and later model year engines: (a) Applicability: This warranty shall apply to 1997 and later model year engines. The ECS Warranty Perio...
Page 56 - GENERAC POWER SYSTEMS “TWO YEAR” LIMITED WARRANTY FOR GUARDIAN; WARRANTY SCHEDULE; YEARS ONE AND TWO –; THIS WARRANTY SHALL NOT APPLY TO THE FOLLOWING:
Part No. 0E8295 Revision F (04/06/04) Printed in U.S.A. Section 10 – Warranty Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators GENERAC POWER SYSTEMS “TWO YEAR” LIMITED WARRANTY FOR GUARDIAN ® “PREPACKAGED EMERGENCY AUTOMATIC STANDBY GENERATORS” For a period of two years from the date of original...
