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Installation and
Owner’s Manual
Air-cooled, Prepackaged
Automatic Standby Generators
Models:
04389-1 (6 kW NG, 7 kW LP)
04456-1 (12 kW NG, 12 kW LP)
04390-1 (13 kW NG, 15 kW LP)
R
GENERAC
POWER SYSTEMS, INC.
R
Not intended for use as Primary Power in place of utility or in
!
!
life-support applications.
DANGER
DEADLY EXHAUST FUMES. OUTDOOR INSTALLATION ONLY!!
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The operator is responsible for proper and safe use INTRODUCTION of the equipment. Genrac strongly recommends that Thank you for purchasing this model of the Guardian the operator read this Owner's Manual and thor- product line by Generac Power Systems Inc. This oughly understand all instructions before using this model is a compact, high performance, air-cooled, equipment. Generac also strongly recommends engine-driven generator designed to automatically instructing other users to properly sta
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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 that the contains chemicals known to the state of California to cause c
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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. Consult the local fire department with any
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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 and 15 kW, V-twin GT-990 Engine Data Control Decal Panel Oil Dipstick Air Filter Exhaust Enclosure Fuel Regulator Battery Compartment Oil Filter ® Generac Power Systems, Inc. 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 04389-1 Model 04456-1 Model 04390-1 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 A
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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 off of the brass fitting using a screw driver to gen- 1.9.1 GENERATOR ◆ 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 1 — General Information Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators charge while the engine is not running, to prevent 1.10 BATTERY INSTALLATION self-discharge. The trickle charger is designed to Fill the battery with the proper electrolyte fluid if nec- help extend the life of your battery by maintaining essary and have the battery fully charged before the battery when the unit is not running. The installing it. trickle charge feature cannot be used to recharge Before installin
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Section 2 — Post Installation Start-up and Adjustments Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators Where electrolyte contacts the eyes, flush 2.2 CHECK TRANSFER SWITCH thoroughly and immediately with water and seek medical attention; and OPERATION Refer to Section 3.5, of the owner’s manual for man- Spilled electrolyte is to be washed down with an acid neutralizing agent. A common practice is to ual operation procedures. use a solution of 1 pound (500 grams) bicarbonate of soda to
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Section 2 — Post Installation Start-up and Adjustments Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators 10. Connect an accurate AC voltmeter and a frequen- 9. Turn ON electrical loads connected to transfer cy meter across transfer switch terminal lugs E1 switch T1 and T2. Apply an electrical load equal and E2. Voltage should be 242-252 volts; fre- to the full rated wattage/amperage capacity of the quency should read about 61-63 Hertz. installed generator. 11. Connect the AC voltmeter test le
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Section 2 — Post Installation Start-up and Adjustments Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators 6. When the highest frequency is reached maximum 2.6 ADJUSTING THE REGULATOR power has been set. From this point turn both (NATURAL GAS ONLY) adjustment screws 1/4 turn counterclockwise. Although the generator has been factory set to pro- The regulator is now set. vide maximum power, it may be necessary in some Figure 2.2 — Placement of Regulator areas to adjust this setting. Because natur
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Section 2 — Post Installation Start-up and Adjustments Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators 5. Turn the speed adjust nut to obtain a frequency 6. Using a hand, push the governor arm to the reading of 63 Hz. closed throttle position. Make sure the idle spring does not stretch at all. 6. When frequency is correct at no load, check the AC voltage reading. If voltage is incorrect, the volt- 7. Restart the unit. age regulator may require adjustment. 8. Slowly turn the idle adjust scre
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Section 3 — Operation Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators 3.2.3 “MANUAL” POSITION 3.1 BREAK-IN PROCEDURE Once the unit has been installed and all electrical Set the switch to Manual to crank and start the checks have been made, it is strongly recommended engine. Transfer to standby power will not occur that the following “Break-in Procedure” be completed unless there is a utility failure. to ensure correct generator operation in the future. Figure 3.1 – Generator Control Panel
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Section 3 — Operation Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators 3.4 SEQUENCE OF AUTOMATIC 3.5 MANUAL TRANSFER OPERATION OPERATION 3.5.1 TRANSFER TO GENERATOR The generator’s control panel houses a control logic POWER SOURCE circuit board. This board constantly monitors utility power source voltage. Should that voltage drop below To start the generator and activate the transfer switch a preset level, circuit board action will signal the manually, proceed as follows: engine to crank a
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n e s o o L Section 3 — Operation Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators NOTE: 3.5.2 TRANSFER BACK TO UTILITY POWER The exerciser will only work in the AUTO mode SOURCE and will not work unless this procedure When utility power has been restored, transfer back is performed. The exerciser will need to be reset to that source and shut down the generator. This can every time the 12-volt battery is disconnected and be accomplished as follows: then reconnected. The exerciser WILL NOT
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Section 4 — Maintenance Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators NOTE: 1. Start the generator by moving the Auto/ Off/Manual switch to the MANUAL position. Allow If the fault is not repaired, the overcrank feature it to run for a short while and then shut it down will continue to activate. by moving the switch to the OFF position. 2. Remove the dipstick and wipe it dry with a 3.7.3.1 Approximate Crank Cycle Times clean cloth. 15 seconds ON 3. Install the dipstick; then, remove i
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n e s o o L Section 4 — Maintenance Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators 4.3 CHANGING THE ENGINE OIL 4.4 CHANGING THE OIL FILTER Change the engine oil filter as follows: 4.3.1 ENGINE OIL RECOMMENDATIONS 1. With the oil drained, remove the old oil filter by Use oil of American Petroleum Institute (API) Service turning it counterclockwise. Class SG, SH or SJ. Use all season SAE 5W-30 2. Apply a light coating of clean engine oil to the gas- Synthetic oil. Organic break-in oil is re
