Page 2 - INTRODUCTION; READ THIS MANUAL THOROUGHLY; This symbol points out potential explosion hazard.; OPERATION AND MAINTENANCE; AUTHORIZED
Generac ® Power Systems, Inc. INTRODUCTION Thank you for purchasing a model of the Guardian product line by Generac Power Systems Inc. These models are compact, high performance, air-cooled, engine-driven generators designed to automatically supply electrical power to operate critical loads dur- ing...
Page 3 - Table of Contents
Table of Contents Guardian Air-cooled Generators Generac® Power Systems, Inc. 1 Introduction ......................Inside Front Cover Read This Manual Thoroughly ......................IFC Operation and Maintenance............................IFC How to Obtain Service ....................................
Page 4 - GENERAL HAZARDS; Important Safety Instructions; The engine exhaust from this product
2 Generac ® Power Systems, Inc. Study these SAFETY RULES carefully before installing, operating or servicing this equipment. Become familiar with this Installation, Start-up and Adjustment Manual and with the unit. The generator can operate safely, efficiently and reliably only if it is properly ins...
Page 5 - ELECTRICAL HAZARDS
Generac ® Power Systems, Inc. 3 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...
Page 6 - INTRODUCTION TO INSTALLATION; Section 1 — Installation; Only qualified electricians or contractors
1.1 INTRODUCTION TO INSTALLATION NOTE: Read the entire manual before starting the installa-tion. Ensure that the model number of the unitbeing installed matches a model on the front cover. Generac cannot possibly know of and advise the home standby trade of all conceivable procedures and meth- ods b...
Page 7 - Figure 1.1 – Location of Lifting Holes/Brackets; AND RECOMMENDATIONS; Temperature
1.3 BEFORE INSTALLATION Before installing this equipment, check the ratings of both the generator and the transfer switch. Read “Emergency Circuit Isolation Method” and “Total Circuit Isolation Method” in Sections 1.8 and 1.9 (Page 11) carefully.The generator's rated wattage/amperage capacity must b...
Page 8 - Full Load; Consumption in
6 Generac ® Power Systems, Inc. With LP gas, use only the vapor withdrawal system. This type of system uses the vapors formed above the liq- uid fuel in the storage tank.The engine has been fitted with a fuel carburetion sys- tem that meets the specifications of the 1997 California Air Resources Boa...
Page 9 - Figure 1.3 – LP Gas Setup; LOCATION AND MOUNTING
Generac ® Power Systems, Inc. 7 3. Refit the fitting and hose to the LP port and the blanking plug to the natural gas port (Figure 1.3). 4. Reverse the procedure to convert back to natural gas. NOTE: The natural gas adjustment screw is preset duringinstallation and should not need any furtheradjustm...
Page 12 - Figure 1.5 – Generator Mounting Dimensions (Sound Attenuated)
10 Generac ® Power Systems, Inc. Figure 1.5 – Generator Mounting Dimensions (Sound Attenuated) Section 1 — Installation Guardian Air-cooled Generators
Page 13 - Figure 1.6 – Emergency Circuit Isolation Method; CIRCUIT; Figure 1.7 – Total Circuit Isolation Method
Generac ® Power Systems, Inc. 11 1.8 EMERGENCY CIRCUIT ISOLATION METHOD One effective way of preventing the generator from being overloaded is to use the “Emergency Circuit Isolation Method” (Figure 1.6).Essential electrical loads are grouped together and wired into a separate emergency distribution...
Page 14 - CONNECTION SYSTEM; Figure 1.8 – Generator AC Connection System; INTERCONNECTIONS
12 Generac ® Power Systems, Inc. 1.10 GENERATOR AC CONNECTION SYSTEM Figure 1.8 represents a single-phase, three-wire gen- erator AC connection system. The stator assembly in this system consists of a pair of stationary windings with two leads brought out of each winding. Each sin- gle winding can s...
Page 17 - TRANSFER SWITCH; Figure 1.12 – Control Board Configuration; GROUNDING THE GENERATOR; Figure 1.13 – Grounding the Generator
Generac ® Power Systems, Inc. 15 1.14 ADAPTING THREE-PHASE TRANSFER SWITCH The generator you are installing may include a prepackaged transfer switch configured for three- phase loads. If you want to adapt this kind of transfer switch for single-phase loads, proceed as follows:1. Discard the three-p...
Page 18 - • Disconnect charging source prior to connecting or dis-
16 Generac ® Power Systems, Inc. 1.17 THE BATTERY Servicing of the battery is to be performed or super- vised by personnel knowledgeable of batteries and the required precautions. Keep unauthorized person- nel away from batteries.When replacing the battery, use the following type of battery: Group 2...
Page 19 - Figure 1.14 – Battery Cable Connections; POST INSTALLATION INSPECTION; Figure 1.15 – Typical Emergency Power System
Generac ® Power Systems, Inc. 17 1.17.1 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 swi...
Page 20 - Figure 2.1 – Generator Control Panel; TRANSFER; Section 2 — Operation
18 Generac ® Power Systems, Inc. NOTE: Throughout the “Operation” section, differencesin procedures specific to sound attenuated unitswill be denoted as follows: (SA = information). 2.1 USING THE AUTO/OFF/MANUAL SWITCH (FIGURE 2.1/2.2) 2.1.1 “AUTO” POSITION Selecting this switch position activates f...
Page 21 - OF; POWER SOURCE; Figure 2.3 – Manual Transfer Switch Operation
Generac ® Power Systems, Inc. 19 2.3 SEQUENCE OF AUTOMATIC OPERATION The generator’s control panel houses a control logic circuit board. This board constantly monitors utili- ty power source voltage. Should that voltage drop below a preset level, circuit board action will signal the engine to crank ...
Page 22 - SYSTEMS; Figure 2.4 – Low Oil Pressure and
20 Generac ® Power Systems, Inc. 6. To crank and start the engine, set the Auto/Off/Manual switch to MANUAL. 7. Let the engine stabilize and warm up for a few minutes. 8. Set the generator’s main circuit breaker to its ON (or closed) position. The standby power source now powers the loads. 2.4.2 TRA...
Page 23 - GENERATOR; Figure 2.6 – Remote Alarms
2.5.3.1 Approximate Crank Cycle Times • 15 seconds ON • 15 seconds OFF • 7 seconds ON • 7 seconds OFF • Repeat for 45 seconds Approximately 90 seconds total 2.5.4 OVERSPEED This feature protects the generator from damage by shutting it down if it happens to run faster than the pre- set limit. This p...
Page 24 - Section 3 — Post-installation Start-up Adjustments
22 Generac ® Power Systems, Inc. 3.1 BEFORE INITIAL START-UP Before starting, complete the following:1. Set the generator's Auto/Off/Manual switch to the OFF position. 2. Turn OFF the utility power supply to the transfer switch using the means provided (such as the utility main line circuit breaker)...
Page 25 - AUTOMATIC
Generac ® Power Systems, Inc. 23 Do not attempt manual transfer switch operation until all power voltage supplies tothe transfer switch have been positively turnedoff. Failure to turn off all power voltage supplies will result in extremely hazardous and possibly fatal electrical shock. 4. Manually s...
Page 26 - Engine Governor Adjustment
24 Generac ® Power Systems, Inc. 3.7 ENGINE GOVERNOR ADJUSTMENT If both AC frequency and voltage are correspondingly high or low, adjust the engine governor as follows: 3.7.1 6 KW UNITS (NON-SA) 1. Loosen the governor clamp bolt (Figure 3.1).2. Push the spring end of the governor lever clock- wise t...
Page 27 - Figure 3.3 – Sound Attenuated; REGULATOR; Figure 3.4 – Voltage Adjustment Potentiometer; ADJUSTMENT
Generac ® Power Systems, Inc. 25 3.7.3 SOUND ATTENUATED UNITS 1. Carefully inspect the governor anti-lash spring (Figure 3.3). Be sure it is not broken or disengaged. 2. Loosen the governor clamp nut. Then, push the spring end of the governor lever all the way up (wide open throttle). 3. Hold the go...
Page 28 - SETTING THE EXERCISE TIMER
26 Generac ® Power Systems, Inc. 3.10 SETTING THE EXERCISE TIMER 3.10.1 6 KW, 8 KW AND 10 KW UNITS (NON-SA) Your generator is equipped with an exercise timer. Once it is set, the generator will start and exercise once every seven days, on the day of the week and at the time of day you complete the f...
Page 29 - GUIDE; PROBLEM; Section 4 — Troubleshooting
Generac ® Power Systems, Inc. 27 4.1 TROUBLESHOOTING GUIDE PROBLEM CAUSE CORRECTION The engine will not crank. 1. Fuse blown 1. Replace fuse. 2. Loose, corroded or defective 2. Tighten, clean or replace battery cables as necessary. 3. Defective starter contactor 3. Replace starter contactor. 4. Defe...
Page 30 - CHECKLIST
28 Generac ® Power Systems, Inc. Section 4 — Troubleshooting Guardian Air-cooled Generators 4.2 INSTALLATION CHECKLIST BATTERY INSTALLATION ❏ Battery is connected properly. ❏ Recommended battery is installed. ❏ Cables are clean and tight. ❏ Terminals are coated with anti-corrosion grease, and termin...
Page 31 - Section 5 — Notes
Generac ® Power Systems, Inc. 29 Section 5 — Notes Guardian Air-cooled Generators
