Guardian Technologies 04758-2 Location, ‹ 1.8.2 12KW AND 15KW, 990CC ENGINES, ‹ 1.9.1 GENERATOR

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‹1.8.2 12KW AND 15KW, 990CC ENGINES

Section 1 — General Information

Air-cooled 7 kW, 12 kW and 15 kW Generators

NOTE:

The natural gas adjustment screw is preset dur- ing installation and should not need any further adjustment.

‹1.8.2 12KW AND 15KW, 990CC ENGINES

To reconfigure the fuel system from NG to LP, follow these steps:

NOTE:

13.To adjust the system to run on LP fuel, turn BOTH adjuster screws 1/2 TURN CLOCKWISE. The system should now be set for maximum power and best perfomance. DO NOT, UNDER ANY CIRCUMSTANCES, REMOVE THE SET PINS FROM THE REGULATOR HOUSING. THIS WILL VOID THE WARRANTY.

Figure 1.4 - Demand Regulator

The primary regulator for the propane supply is NOT INCLUDED with the generator. A fuel pres- sure of 11 to 14 inches of water column (0.4 to

0.5psi) to the fuel inlet of the generator MUST BE SUPPLIED.

1.

Turn off the gas supply. (if connected)

2.

Open the roof and remove the door.

3.

Remove the battery. (if installed)

4.

Remove the engine air in baffle located on the left-

 

hand side of the battery compartment. Two M6

 

screws are located on top of the baffle and two

IDLE CIRCUIT PORT

 

OUTLET PORTS

 

FUEL HOSE

 

BRASS HOSE

 

FITTING

U

BRASS HOSE

T

FITTING

1

TAP

 

1/8 NPT

 

ADJUSTER

 

SCREWS

SMALL

FUEL JET

REGULATOR HOUSING PORT

 

M6 screws are located on the inside of the baffle

 

towards the back.

5.

Remove the small hose clamp and hose from the

 

fuel regulator. It may be necessary to pry the hose

 

off of the brass fitting using a screwdriver to gen-

 

tly lift up the hose edge.

6.

Remove the small brass hose fitting from the

 

regulator casting.

7.

Place the small fuel jet, thread side first, into the

 

threaded hole originally occupied by the brass

 

hose fitting (Figure 1.4).

8.

Using a short No. 2 Phillips screw driver, thread

 

the small fuel jet into the regulator casting. Do

 

not over tighten.

9.

Apply thread sealant to the threads of the hose

 

fitting and replace it into the regulator body.

10.

Re-attach the small hose and hose clamp and

 

tighten as necessary.

11.

Replace the engine air in baffle using the four M6

 

screws.

12.

Identify both brass adjustment screws on the

 

regulator.

NOTE:

One adjustment screw can be accessed from the front of the unit and the second can be accessed from the back of the unit enclosure by removing the plastic hole plug. The screw can be turned with a long flat blade screwdriver.

14.It may be necessary to make minor adjustments to the preset adjustment screw settings to achieve maximum power, particularly at higher altitudes. If experiencing problems with the unit producing maximum power, follow the procedure in Section 2.6 (Adjusting the Fuel Regulator).

1.9LOCATION

‹1.9.1 GENERATOR

Install the generator set, in its protective enclosure, outdoors, where adequate cooling and ventilating air is always available. Consider these factors:

Install the unit where air inlet and outlet open- ings will not become obstructed by leaves, grass, snow, etc. If prevailing winds will cause blowing or drifting, consider using a windbreak to protect the unit.

Install the generator on high ground where water levels will not rise and endanger it.

Allow sufficient room on all sides of the generator for maintenance and servicing. A good rule is to allow three feet of space on all sides.

Where strong prevailing winds blow from one direction, face the generator air inlet openings to the prevailing winds.

Install the generator as close as possible to the fuel supply, to reduce the length of piping.

Install the generator as close as possible to the transfer switch. HOWEVER, REMEMBER THAT LAWS OR CODES MAY REGULATE THE DISTANCE.

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Contents This manual should remain with the unit Models 04758-2 6 kW NG, 7 kW LP 04759-2 12 kW NG, 12 kW LP04760-2 13 kW NG, 15 kW LP  Not intended for use as Primary Power in place of utility ‹ HOW TO OBTAIN SERVICE ‹ CONTENTS‹ OPERATION AND MAINTENANCE INTRODUCTIONSection 4 - Maintenance Section 2 - Post Installation Start-upand Adjustments Section 5 - Troubleshooting WARNING   GENERAL HAZARDS IMPORTANT SAFETY INSTRUCTIONS This product contains or emits chemicals EXPLOSION HAZARDS   ELECTRICAL HAZARDS  FIRE HAZARDS  ‹ STANDARDS INDEX1.3 SYSTEM SET LED 1.1 UNPACKING/INSPECTION1.2 PROTECTION SYSTEMS DANGERFigure 1.1 - 7 kW, Single Cylinder GH-410 Engine 1.4 THE GENERATORFigure 1.2 - 12 kW/15 kW, V-twin GT-990/760 Engine ‹ 1.5.1 GENERATOR 1.5 SPECIFICATIONS‹ 1.5.2 ENGINE 1.7 FUEL CONSUMPTION 1.8 RECONFIGURING THE FUEL SYSTEM1.6 FUEL REQUIREMENTS AND RECOMMENDATIONS DANGER‹ 1.9.1 GENERATOR 1.9 LOCATION‹ 1.8.2 12KW AND 15KW, 990CC ENGINES Figure 1.4 - Demand Regulator‹ 1.9.2 TRANSFER SWITCH 1.9.2.1 7 kW, 12 kW and 15 kW Units 1.10 BATTERY INSTALLATION1.11 THE BATTERY Figure 1.5 - Battery Cable Connections2.3 ELECTRICAL CHECKS 2.2 CHECK TRANSFER SWITCH OPERATION2.1 BEFORE INITIAL START-UP Section 2 - Post Installation Start-up and Adjustments2.4 GENERATOR TESTS UNDER LOAD 2.5 CHECKING AUTOMATIC OPERATIONFigure 2.2 - Placement of Regulator 2.6 ADJUSTING THE REGULATOR NATURAL GAS ONLYFigure 2.1 - Dual Fuel Regulators Figure 2.4 - V-twin Engine Governor Adjustment 2.7 ENGINE GOVERNOR ADJUSTMENTFigure 2.3 - Single Cylinder Engine Governor Adjustment Figure 2.5 - V-twin Full Load Speed Adjust ScrewFigure 2.6 - Voltage Adjustment Potentiometer 2.8 VOLTAGE REGULATOR ADJUSTMENT3.1 BREAK-IN PROCEDURE ‹ 3.2.1 “AUTO” POSITION3.5 MANUAL TRANSFER OPERATION 3.3 AUTOMATIC TRANSFER OPERATION3.4 SEQUENCE OF AUTOMATIC OPERATION ‹ 3.5.1 TRANSFER TO GENERATOR POWER SOURCE‹ 3.7.1 LOW OIL PRESSURE SWITCH 3.6 SETTING THE EXERCISE TIMER‹ 3.5.2 TRANSFER BACK TO UTILITY POWER SOURCE Figure 3.2 - Manual Transfer Switch Operation4.1 FUSE ‹ 3.7.2 HIGH TEMPERATURE SWITCHFigure 3.3 - Low Oil Pressure and High Temperature Switches 4.2 CHECKING THE ENGINE OIL LEVEL4.3 CHANGING THE ENGINE OIL 4.5 CHANGING THE ENGINE AIR CLEANER‹ 4.3.2 OIL CHANGE PROCEDURE 4.4 CHANGING THE OIL FILTERFigure 4.7 - 12 kW and 15 kW Engine Air Cleaner 4.7 BATTERY MAINTENANCEFigure 4.6 - 7 kW, Engine Air Cleaner Location Figure 4.8 - Setting the Spark Plug GapFigure 4.10 - Valve Clearance Adjustment 4.8 ADJUSTING VALVE CLEARANCE4.9 COOLING SYSTEM ‹ 4.12.2 RETURN TO SERVICE 4.12 OUT OF SERVICE PROCEDURE‹ 4.12.1 REMOVAL FROM SERVICE 4.10 ATTENTION AFTER SUBMERSIONATTENTION It is recommended that all service work 4.13 SERVICE SCHEDULEbe performed by the nearest Authorized Dealer Cause 5.1 TROUBLESHOOTING GUIDEProblem CorrectionENGINE WIRING Section 6 - Electrical DataCUSTOMER CONTROL PANEL BOXCONNECTION Electrical Schematic - 12 & 15 kW - Drawing No. 0D8501-B Section 6 - Electrical Data ENGINE WIRING Section 6 - Electrical DataCONTROL PANEL BOX 225A 224AElectrical Schematic - 7 kW - Drawing No. 0D9014-C Section 7 - Exploded Views and Parts Lists PRE PACKAGED UNITS ONLYFOAM, EXHAUST SIDE ENCLOSURE FRONT PART NO. QTY. DESCRIPTIONCLOTH, HARDWARE 266.7mm x 146mm 7KW FOAM, BACK EXHAUST ENCLOSURE COVERSection 7 - Exploded Views and Parts Lists PART NO. QTY DESCRIPTION69 16A, 16B, 17 Views and Parts Lists66 2, 5, 19, 20, 39, 40, 47, 64, 93 67 8, 11, 12 68 4, 5 72 27, 28 73 3, 32, 33, 34, 35, 36, 40ITEM PART NO. QTY. DESCRIPTION ASSEMBLY, CRANKCASE HOUSING WITHASSEMBLY, CRANKSHAFT HORIZONTAL ROLLER BEARING, GOVERNOR PLATESection 7 - Exploded Views and Parts Lists ASSY, IGNITION COIL GV-990 CYLINDER 7 kW Generator - Drawing No. 0D3504-E 1.8 FT 1.25 FT12 kW and 15 kW Generator - Drawing No. 0D3417-L 32 313 FT 2.6 FT1.44 FT Section 7 - Exploded Views and Parts Lists Section 7 - Exploded Views and Parts Lists DESCRIPTIONSection 7 - Exploded Views and Parts Lists Section 7 - Exploded Views and Parts Lists DESCRIPTIONSection 7 - Exploded Views and Parts Lists Section 7 - Exploded Views and Parts Lists Drawing No ALL DIMENSIONS IN MILLIMETERS INCHESSection 8 - Mounting Air-cooledSection 9 - Notes PURCHASER’S/OWNER’S WARRANTY RESPONSIBILITIES YOUR WARRANTY RIGHTS AND OBLIGATIONSMANUFACTURER’S EMISSION CONTROL SYSTEM WARRANTY COVERAGE CALIFORNIA AND FEDERAL EMISSION CONTROL WARRANTY STATEMENTEMISSION CONTROL SYSTEM WARRANTY EMISSION RELATED PARTS INCLUDE THE FOLLOWINGTHIS WARRANTY SHALL NOT APPLY TO THE FOLLOWING GENERAC POWER SYSTEMS TWO YEAR LIMITED WARRANTY FOR GUARDIANWARRANTY SCHEDULE PREPACKAGED EMERGENCY AUTOMATIC STANDBY GENERATORS