Generac Power Systems 004917-3 owner manual Manual Transfer START-UP Engine Governor Adjustments

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Section 3 — Operation

QUIETSOURCELiquid-cooled 30 kW Generators

‹3.2.2 FAULT INDICATOR LED

This LED goes ON when one or more of the following engine faults occurs and when engine shuts down.

Low Oil Pressure

Overcrank

Low Battery

Overspeed/RPM Sensor Loss

High Coolant Temperature/Low Coolant Level

See Section 1.7 for further explanation of engine pro- tection functions.

‹3.2.3 15 AMP FUSE

This fuse protects the control console’s DC control circuit against electrical overload. If the fuse has melted open because of an overload, engine cranking and startup cannot occur. If the fuse needs to be replaced, use only an identical 15-amp replacement fuse. (Type AGC)

‹3.2.4 4 AMP INLINE FUSE

This fuse protects the battery charger against electri- cal overload. If the fuse needs to be replaced, use only an identical 4 amp replacement fuse (type AG).

NOTE:

This fuse will not remove the + battery input power from the PCB when it opens. This means the exercise timer will not be reset.

‹3.2.5 SET EXERCISE TIME SWITCH

3.3MANUAL TRANSFER AND

START-UP

To transfer electrical loads to the Standby (EMER- GENCY) power source side and start the engine man- ually, refer to the Owner’s Manual of the particular transfer switch.

3.4ENGINE GOVERNOR

ADJUSTMENTS

Engine speed governing is also controlled by the engine control board. Connector J2 on the engine control board interfaces with a governor driver mod- ule and the Bosch throttle body. The engine governor has been set by the factory during final testing of the generator and, in most cases, should not be adjusted.

If, however, adjustments are necessary, or a new engine control board is installed in the generator, the following procedure should be followed (Figure 3.2):

1.Set all three potentiometers (pots) fully counter- clockwise.

2.Under no load condition, increase the GAIN pot as much as possible without causeing instability.

3.Apply 1/4, 1/2, 3/4 and full load to the unit. Decrease the GAIN pot if there is instability at any load point.

4.Under full load condition, increase the stability pot until the unit returns to 60 Hertz (or 50 Hertz in 50 Hertz applications).

Figure 3.2 — Engine Governor Adjustment

This switch allows programming the generator to start and exercise automatically. “See Weekly Exercise Cycle.”

‹3.2.6 SYSTEM READY LED

The System Ready LED (green) has two main pro- poses. First, the LED will be ON when the AUTO/OFF/MANUAL switch is in the AUTO position, utility is present, and there are no system alarms. This ON state indicates the system is fully ready for automatic operation.

The system ready LED will be OFF when the switch is in the manual or OFF positions.

The system ready LED is also used to indicate the presence of utility sensing at the PCB when the switch is either in the AUTO or MANUAL modes. The LED will flash at the rate of 1/2 second on, 1/2 second off if the utility sensing level is below the transfer back threshold.

This secondary function is only available with dip switch two in the OFF position (standard ATS appli- cation).

LED1

2

U7

C4

C30

R25

R49

U1

.REV

E4906 PCB#

DIFFERENTIAL STABILITY

 

 

 

R44

 

C9

C27

Q2

 

 

 

 

 

 

J2

 

 

 

 

C26

 

 

 

 

D10

 

 

 

 

C21

 

C2

 

 

 

 

 

RL1

 

RL2

 

R1

 

 

 

 

R48

 

 

 

 

D17

 

 

 

 

 

 

 

J1

 

L3

 

 

 

 

 

 

 

D19

 

DIP SWITCH

 

1

UNUSED

POSITION 1

POSITION 2

3

50/60 HZ

GTS/ATS Select

 

 

 

 

ON = 50 HZ

ON = GTS

2

GTS/ATS

OFF = 60 HZ

OFF = ATS (standard mode)

4

50/60 HZ

 

 

14 Generac® Power Systems, Inc.

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Contents Installation Authorized Service Dealer Location ‹ Operation and Maintenance‹ HOW to Obtain Service IntroductionTable of Contents General Hazards Electrical Hazards Transfer Switch GeneratorAutomatic System Operation Generator AC Connection Systems‹ 1.7.2 High Coolant Temperature Switch ‹ 1.7.1 LOW OIL Pressure Switch‹ 1.7.3 LOW Coolant Level Switch Generator Fuel SystemUnpacking Lifting the GeneratorSpecifications Reconfiguring the Fuel System‹ 1.10.1 Generator Specifications ‹ 1.10.2 Engine SpecificationsTorque Specifications Before InstallationEngine OIL Recommendations Coolant RecommendationsGenerator Location Generator Mounting SupportBasic Standby Electric System ‹ 2.1.1 Nfpa StandardsEmergency Circuit Isolation Method Total Circuit Isolation MethodGrounding the Generator Generator AC Neutral ConnectionsTransfer Switch Signal Connections Battery Installation‹ 2.9.1 PRE-PACKAGED ATS ‹ 2.9.2 GTS-TYPE ATSPreparation Before START-UP Using a Standard GTS Transfer Switch ‹ 3.2.1 AUTO/OFF/MANUAL SwitchControl Console Components ‹ 2.11.7 Electrical SystemManual Transfer START-UP Engine Governor Adjustments ‹ 3.2.2 Fault Indicator LED‹ 3.2.5 SET Exercise Time Switch ‹ 3.2.4 4 AMP Inline FuseAutomatic Operation Retransfer and ShutdownWeekly Exercise Cycle Checking Fluid Levels Overload Protection for Engine DC Electrical SystemCooling System ‹ 4.5.2 Check Battery ‹ 4.4.3 Engine Coolant‹ 4.5.1 Check Engine OIL Level ‹ 4.5.3 Exercise SystemMiscellaneous Maintenance ‹ 4.5.11 Changing the Engine AIR Cleaner‹ 4.6.1 Cleaning the Generator ‹ 4.5.13 Coolant Change‹ 4.6.3 Battery Maintenance ‹ 4.6.2 Battery‹ 4.6.4 Battery Replacement Scheduled Maintenance Service Maintenance Interval InformationLevel Maintenance Level Troubleshooting Points Problem Cause CorrectionCustomer Connection PCB J2 BCW LOS WLS HCT Starter Carrier Bolt Boot Battery Cable Battery Post Cover BaclkBattery Post Cover RED + Hold Down BatteryDetail Assy GRD Wire 99HSB ASSEMBLY,BASE-DOOR Ground WireDuct Intake MID AL Duct Discharge RH ALGenerac Power Systems, Inc Assy 2A 12V UL Battery Control BOX HSBDecal AVR Cover Cover Front Panel HSB61 24 Wire SET 3.0L Ford not Not SHOWN-USED to Hold OIL Drain AssemblyCoil Ignition 3.0L Ford Bracket DC ALT 3.0L FordFrame Tank Coolant Recovery Radiator R-IN,L-OUTVenturi 3.0L Ford HSB Side Support Radiator HSBTo B Weldment Mounting Base Flange Fuel InletAssy Regulator 3.0L NG or LPV Washer Flat 5/16 ZincLocktight Rotor 390 15KW 1P Direct HSB 2.5L Ford Rotor 390 20KW 1P Direct HSB 2.5L FordRotor 390 25KW 1P Direct HSB 2.5L Ford Rotor 39030AD1 HSB TecumExhaust Flange 2 Pipe OUTWasher Lock 3/8 SS Pipe Muffler OUTElement AIR Cleaner Cover AIR CleanerTube AIR Intake 3.0L Ford Washer Flat M5Installation Diagram Quietsource Liquid-cooled 30 kW Generators This Warranty Shall not Apply to the Following