Progressing in power from the 11 kW model, the liquid-cooled line of QuietSource generators make available environmentally quiet operation while resisting corrosion. Combining an air-channeling designed enclosure with sound-deadening materials make these some of the quietest liquid-cooled standby generators on the market. And because of the all aluminum enclosure, these units are also corrosion resistant to keep up their good looks over the long haul. Units run on either natural gas or LP gas.

Standard Features

• Built-in charger maintains battery at optimum performance level.
• Automatic safety shutdowns protect engine and generator in event of low oil pressure, low oil level, low coolant level, high temperature, overspeed and/or overcrank.
• Automatic seven-day exerciser runs the system for fifteen minutes each week to maintain top running condition.
• Transfer switch options are available in 200 amp size

Sound Attenuated Enclosure

• Engineered air-channeling and sound reduction design
• Sound-deadening material
• All aluminum
• Corrosion resistant

TYPE ..........................................................................................................Synchronous

ROTOR INSULATION ..........................................................................................Class H

STATOR INSULATION ........................................................................................Class H

TOTAL HARMONIC DISTORTION ........................................................................<3.5%

TELEPHONE INTERFERENCE FACTOR (TIF) ........................................................<50

ALTERNATOR OUTPUT LEADS 3 PHASE............................................................4 wire

BEARINGS ....................................................................................................Sealed Ball

COUPLING ..................................................................................................Flexible Disc

LOAD CAPACITY (STANDBY RATING) ................................................................40 kW

EXCITATION SYSTEM............................................................................................Direct

Revolving field heavy duty generator

Directly connected to the engine

Operating temperature rise 120 �C above a 40 �C ambient

Insulation is Class H rated at 150 �C rise

All models are fully prototyped tested

TYPE ................................................................................................................Electronic

SENSING ....................................................................................................Single Phase

REGULATION ..........................................................................................................� 1%

FEATURES................................................................................................V/F Adjustable

Adjustable Voltage and Gain

LED Indicators

SIX LED INDICATOR LIGHTS:

Overcrank shutdown Overspeed shutdown

Low coolant level shutdown High coolant temperature shutdown

Low oil pressure shutdown Low battery voltage

System ready for operation No utility sensing

Exerciser not set (in auto mode only) Low fuel pressure

Delay on utility failure for engine start Engine warmup before transfer

Delay to retransfer to utility Delay to retransfer to utility

Engine cooldown timer

INTERNAL FUNCTIONS:

3 position switch (auto, off and manual)

2 wire start for any transfer switch

Communicates with the Generac RTS transfer switch

Built-in 7 day exerciser

Selectable engine speed at exercise

Governor controller is built into the master control board

Temperature range -40 �C to 70 �C

MAKE ................................................................................................................ Generac

MODEL..................................................................................................................V Type

CYLINDERS ..................................................................................................................6

DISPLACEMENT ................................................................................................3.9 Liter

BORE ........................................................................................................................3.91

STROKE....................................................................................................................3.31

COMPRESSION RATIO ..........................................................................................9.1:1

INTAKE AIR SYSTEM........................................................................Naturally Aspirated

VALVE SEATS ......................................................................................Precision ground

LIFTER TYPE ....................................................................................................Hydraulic

TYPE ................................................................................................................Electronic

FREQUENCY REGULATION ..................................................................................� 1%

STEADY STATE REGULATION ............................................................................� 1/2%

ADJUSTMENTS

Speed......................................................................................................Yes

Droop ......................................................................................................Yes

OIL PUMP ................................................................................................................Gear

OIL FILTER ..........................................................................................Full flow cartridge

CRANKCASE CAPACITY ..................................................................................4 Quarts

TYPE ....................................................................................................................Closed

WATER PUMP ................................................................................................Belt driven

FAN SPEED..............................................................................................................2190

FAN DIAMETER................................................................................................22 inches

FAN MODE............................................................................................................Pusher

FUEL TYPE ..........................................................................Natural gas, propane vapor

CARBURETOR ..............................................................................................Down Draft

SECONDARY FUEL REGULATOR ..................................................................Standard

FUEL SHUT OFF SOLENOID ..........................................................................Standard

OPERATING FUEL PRESSURE..................................................................5� - 14� H2O

BATTERY CHARGE ALTERNATOR ............................................................12V 30 Amp

STATIC BATTERY CHARGER ..............................................................................2 Amp

RECOMMENDED BATTERY ......................................................................24F 625CCA

SYSTEM VOLTAGE ............................................................................................12 Volts

GENERATOR FEATURES

ˆFour pole, revolving field generator, directly connected to the engine shaft through a heavy-duty, flexible disc for permanent alignment.

ˆGenerator meets temperature rise standards for class “F” insulation as defined by NEMA MG1-22.4 and NEMA MG 1-1.65.

ˆRotor and stator and other insulation is impregnated twice with class “H” varnish.

ˆUnit tested for motor starting ability by measuring instantaneous voltage dip with an oscillograph.

ˆAll models utilize an advanced wire harness design for reliable interconnection within the circuitry.

ˆMagnetic circuit, including amortisseur windings, tooth and skewed stator design, provides a minimal level of waveform distortion and an electromagnetic interference level which meets accepted requirements for standard AM radio, TV, and marine radio telephone applications.

ˆVoltage waveform deviation, total harmonic content of the AC waveform, and balanced T.I.F. (Telephone Influence Factor) have been evaluated to acceptable standards in accordance with NEMA MG1-22.

ˆAlternator is of drip-proof guarded construction.

ˆFully life-tested protective systems, including “field circuit and thermal overload protection” and standard main line circuit breakers capable of handling full output capacity.

ˆSystem torsional acceptability confirmed during prototype testing.

STANDARD ENGINE & SAFETY FEATURES Home Standby 40 kW Generator Guardian Quietsource

ˆHigh Coolant Temperature Automatic Shutdown ˆBattery Charge Alternator ˆLow Coolant Level Automatic Shutdown ˆBattery Cables ˆLow Oil Pressure Automatic Shutdown ˆBattery Tray ˆOverspeed Automatic Shutdown (Solid-state) ˆVibration Isolation of Unit to Mounting Base ˆCrank Limiter (Solid-state) ˆ12 Volt, Solenoid-Activated Starter Motor ˆOil Drain Extension ˆAir Cleaner ˆRadiator Drain Extension ˆFan Guard ˆFactory-Installed Cool Flow Radiator ˆControl Console ˆClosed Coolant Recovery System ˆStainless Steel Flexible Exhaust Connection ˆUV/Ozone Resistant Hoses ˆMain Line Circuit Breaker ˆRubber-Booted Engine Electrical Connections ˆCritical Exhaust Silencer ˆFuel Lockoff Solenoid ˆBattery Trickle Charger ˆIsochronous Governor ˆAll Aluminum Weather Protective Enclosure ˆSecondary Fuel Regulator (N.G. and L.P.) (Locking Type)

Home Standby Control Features:

Design and specifications subject to change without notice. Dimensions shown are approximate. Contact your Guardian dealer for certified drawings. 
DO NOT USE THESE DIMENSIONS FOR INSTALLATION PURPOSES.