Guardian Technologies 04758-2 Voltage Regulator Adjustment, Break-In Procedure, Operation

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Section 3 — Operation
Section 3 — Operation

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

5.Remove load, stop engine, loosen the idle adjust screw and reconnect the idle spring.

6.Using a hand, push the governor arm to the closed throttle position. Make sure the idle spring does not stretch at all.

7.Restart the unit.

8.Slowly turn the idle adjust screw to adjust the no- load idle frequency to 63-63.5 Hz.

9.The governor is now set.

‹2.7.3 ADDITIONAL CORROSION PROTECTION

Periodically spray all engine linkage parts and brack- ets with corrosion inhibiting spray such as WD-40 or a comparable product.

2.8VOLTAGE REGULATOR

ADJUSTMENT

With the frequency between 62-63.5 Hertz, slowly turn the slotted potentiometer (Figure 2.6) until line voltage reads 244-252 volts.

NOTE:

Remove the access panel on top of the control panel to adjust the voltage regulator.

Figure 2.6 – Voltage Adjustment Potentiometer

NOTE:

1.Set the generator’s AUTO/OFF/MANUAL switch to AUTO.

2.Turn OFF the utility power supply to the transfer switch using the means provided (such as a utility main line circuit breaker).

3.The unit will start, and the transfer switch will transfer to standby.

4.Run the unit for one hour at 25 percent load.

5.Run the unit for one hour at 50 percent load.

6.Run the unit for one hour at 75 percent load.

7.Run the unit for one hour at 100 percent load.

8.Turn ON the utility power supply to the transfer switch, which will allow the transfer switch to transfer back to utility power. The unit will con- tinue to run for one minute and then shut down.

9.Allow the unit to cool.

10.Drain the oil and remove the oil filter. Replace the oil filter according to Section 4.4, “Changing the Oil Filter”. Replace the oil with synthetic oil as recommended in Section 4.3, “Changing the Engine Oil”.

11.The generator is now ready for service.

3.2USING THE AUTO/OFF/MANUAL SWITCH (FIGURE 3.1)

‹3.2.1 “AUTO” POSITION

Selecting this switch position activates fully automatic system operation. It also permits starting and exercising the engine every seven days with the setting of the exer- cise timer (see Section 3.6). This position also is used for remote starting, when it is set up.

‹3.2.2 “OFF” POSITION

This switch position shuts down the engine. This position also prevents automatic operation.

‹3.2.3 “MANUAL” POSITION

Set the switch to MANUAL to crank and start the engine. Transfer to standby power will not occur unless there is a utility failure.

Figure 3.1 – Generator Control Panel

The voltage regulator is housed above the generator's control panel. The regulator maintains a voltage in direct proportion to frequency. For example, at 62 Hertz, line-to-neutral voltage will be 124 volts.

3.1BREAK-IN PROCEDURE

Once the unit has been installed, with utility power connected to the transfer switch, and all electrical checks have been made, it is strongly recommended that the following “Break-in Procedure” be completed to ensure correct generator operation in the future.

14

FUSE

5A

AUTO OFF MAN.

FUSE

15ASET EXERCISE

TIME

L o c a t e y o u r n e a r e s t ‹2.7.3 ADDITIONAL CORROSION PROTECTION2.8VOLTAGE REGULATORFigure 2.6 – Voltage Adjustment Potentiometer d e a le r a t :

3.2USING THE AUTO/OFF/MANUAL SWITCH (FIGURE 3.1)POWER SYSTEMS, INC.

SYSTEM SET

LOW OIL

HIGH TEMP.

OVER SPEED

OVER CRANK

F L A S H IN G G R E E N L E D =

N O U T IL IT Y S E N S E 4 F L A S H IN G R E D L E D S =

E X E R C IS E R N O T S E T

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Contents Models 04758-2 6 kW NG, 7 kW LP 04759-2 12 kW NG, 12 kW LP 04760-2 13 kW NG, 15 kW LPThis manual should remain with the unit  Not intended for use as Primary Power in place of utility ‹ CONTENTS ‹ OPERATION AND MAINTENANCE‹ HOW TO OBTAIN SERVICE INTRODUCTIONSection 2 - Post Installation Start-up and AdjustmentsSection 4 - Maintenance Section 5 - Troubleshooting GENERAL HAZARDS  IMPORTANT SAFETY INSTRUCTIONS WARNING  This product contains or emits chemicals ELECTRICAL HAZARDS   FIRE HAZARDS  EXPLOSION HAZARDS  ‹ STANDARDS INDEX1.1 UNPACKING/INSPECTION 1.2 PROTECTION SYSTEMS1.3 SYSTEM SET LED 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 1.8 RECONFIGURING THE FUEL SYSTEM 1.6 FUEL REQUIREMENTS AND RECOMMENDATIONS1.7 FUEL CONSUMPTION DANGER1.9 LOCATION ‹ 1.8.2 12KW AND 15KW, 990CC ENGINES‹ 1.9.1 GENERATOR Figure 1.4 - Demand Regulator1.10 BATTERY INSTALLATION 1.11 THE BATTERY‹ 1.9.2 TRANSFER SWITCH 1.9.2.1 7 kW, 12 kW and 15 kW Units Figure 1.5 - Battery Cable Connections2.2 CHECK TRANSFER SWITCH OPERATION 2.1 BEFORE INITIAL START-UP2.3 ELECTRICAL CHECKS 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 2.7 ENGINE GOVERNOR ADJUSTMENT Figure 2.3 - Single Cylinder Engine Governor AdjustmentFigure 2.4 - V-twin Engine Governor Adjustment Figure 2.5 - V-twin Full Load Speed Adjust Screw2.8 VOLTAGE REGULATOR ADJUSTMENT 3.1 BREAK-IN PROCEDUREFigure 2.6 - Voltage Adjustment Potentiometer ‹ 3.2.1 “AUTO” POSITION3.3 AUTOMATIC TRANSFER OPERATION 3.4 SEQUENCE OF AUTOMATIC OPERATION3.5 MANUAL TRANSFER OPERATION ‹ 3.5.1 TRANSFER TO GENERATOR POWER SOURCE3.6 SETTING THE EXERCISE TIMER ‹ 3.5.2 TRANSFER BACK TO UTILITY POWER SOURCE‹ 3.7.1 LOW OIL PRESSURE SWITCH Figure 3.2 - Manual Transfer Switch Operation‹ 3.7.2 HIGH TEMPERATURE SWITCH Figure 3.3 - Low Oil Pressure and High Temperature Switches4.1 FUSE 4.2 CHECKING THE ENGINE OIL LEVEL4.5 CHANGING THE ENGINE AIR CLEANER ‹ 4.3.2 OIL CHANGE PROCEDURE4.3 CHANGING THE ENGINE OIL 4.4 CHANGING THE OIL FILTER4.7 BATTERY MAINTENANCE Figure 4.6 - 7 kW, Engine Air Cleaner LocationFigure 4.7 - 12 kW and 15 kW Engine Air Cleaner Figure 4.8 - Setting the Spark Plug GapFigure 4.10 - Valve Clearance Adjustment 4.8 ADJUSTING VALVE CLEARANCE4.9 COOLING SYSTEM 4.12 OUT OF SERVICE PROCEDURE ‹ 4.12.1 REMOVAL FROM SERVICE‹ 4.12.2 RETURN TO SERVICE 4.10 ATTENTION AFTER SUBMERSIONATTENTION It is recommended that all service work 4.13 SERVICE SCHEDULEbe performed by the nearest Authorized Dealer 5.1 TROUBLESHOOTING GUIDE ProblemCause 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 ONLYPART NO. QTY. DESCRIPTION CLOTH, HARDWARE 266.7mm x 146mm 7KWFOAM, EXHAUST SIDE ENCLOSURE FRONT FOAM, BACK EXHAUST ENCLOSURE COVERSection 7 - Exploded Views and Parts Lists PART NO. QTY DESCRIPTIONViews and Parts Lists 66 2, 5, 19, 20, 39, 40, 47, 64, 93 67 8, 11, 12 68 4, 569 16A, 16B, 17 72 27, 28 73 3, 32, 33, 34, 35, 36, 40ASSEMBLY, CRANKCASE HOUSING WITH ASSEMBLY, CRANKSHAFT HORIZONTALITEM PART NO. QTY. DESCRIPTION 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 ALL DIMENSIONS IN MILLIMETERS INCHES Section 8 - MountingDrawing No Air-cooledSection 9 - Notes YOUR WARRANTY RIGHTS AND OBLIGATIONS MANUFACTURER’S EMISSION CONTROL SYSTEM WARRANTY COVERAGEPURCHASER’S/OWNER’S WARRANTY RESPONSIBILITIES CALIFORNIA AND FEDERAL EMISSION CONTROL WARRANTY STATEMENTEMISSION CONTROL SYSTEM WARRANTY EMISSION RELATED PARTS INCLUDE THE FOLLOWINGGENERAC POWER SYSTEMS TWO YEAR LIMITED WARRANTY FOR GUARDIAN WARRANTY SCHEDULETHIS WARRANTY SHALL NOT APPLY TO THE FOLLOWING PREPACKAGED EMERGENCY AUTOMATIC STANDBY GENERATORS