Generac Power Systems 5254, 5252 Checking the Engine OIL Level, Fuses, ‹ 3.6.5 RPM Sensor Failure

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Section 4 — Maintenance

Air-cooled Generators

‹3.6.5 RPM SENSOR FAILURE

During cranking, if the board does not see a valid RPM signal within three (3) seconds, it will shut down and latch out on RPM sensor loss.

During running, if the RPM signal is lost for one full second the board will shut down the engine, wait 15 seconds, then re-crank the engine.

If an RPM signal is not detected within the first three (3) seconds of cranking, the control board will shut the engine down and latch out on RPM sensor loss.

If the RPM signal is detected the engine will start and run normally. If the RPM signal is subsequent- ly lost again, the control board will try one more re-crank attempt before latching out and flashing the overspeed LED.

‹3.6.6 LOW BATTERY

The microprocessor will continually monitor the battery voltage and turn on the Low Battery LED if the battery voltage falls below 11.0 volts for one (1) minute. No other action is taken on a low battery condition. Low battery voltage is a non-latching alarm which will automatically clear if the battery voltage rises above 11.0 volts. Battery voltage is NOT moni- tored during the crank cycle.

4.2CHECKING THE ENGINE

OIL LEVEL

For oil capacities, see the Specifications section. For engine oil recommendations, see the Engine Oil Recommendations section. To check the engine oil level, proceed as follows (Figures 4.2, 4.3 and 4.4):

1.Move the AUTO/OFF/ MANUAL switch to the OFF position.

2.Remove the dipstick and wipe it dry with a clean cloth.

3.Completely insert the dipstick; then, remove it again. The oil level should be at the dipstick “Full” mark. If necessary, add oil to the “Full” mark only. DO NOT FILL ABOVE THE “FULL” MARK.

Never operate the engine with the oil level below the “Add” mark on the dipstick. Doing this could damage the engine.

4.Install the dipstick.

5.Reset the AUTO/OFF/MANUAL switch to its origi- nal position.

Figure 4.2 — Oil Dipstick and Fill, 7kW

4.1 FUSES

Oil Dipstick and Fill

The 15-amp fuse on the generator panel protects the DC control circuit against overload (Figure 4.1). This fuse is wired in series with the battery output lead to the panel. If this fuse element has melted open, the engine will not be able to crank or start. Replace this fuse using only an identical 15-amp replacement fuse. To replace the fuse, push the fuse holder cap down and rotate it counterclockwise. Whenever the fuse is removed or replaced, the exercise timer needs to be reset.

Figure 4.1 – Generator Control Panel

CONTROL AND INFORMATION CENTER

SYSTEM SET

LOW BATTERY

LOW OIL

AUTO. OFF MAN.

HIGH TEMP

SYSTEM FUSEOVER SPEED

NO RPM SENSE IF FLASHING

OVER CRANK

15A

SET

FLASHING GREEN LED=

NO UTILITY SENSE

ASSY: 0F8418/0F8419

EXERCISE

5 FLASHING RED LEDS=

TIME

EXERCISER NOT SET

 

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Contents Listed Authorized Dealer Location IntroductionMaintenance Post Installation Start-up AdjustmentsTroubleshooting Introduction Inside Front Cover Warning  ‹ Standards Index  Electrical Hazards UNPACKING/INSPECTION Protection SystemsBreaker for Bedrooms 7kW, Single Cylinder GH-410 Engine GeneratorSpecifications ‹ 1.5.1 Generator‹ 1.5.2 Engine Fuel Requirements Recommendations System SET LEDFuel Consumption ‹ 1.8.1 BTU Flow Requirements Natural GASReconfiguring the Fuel System ‹ 1.9.1 7 KW, 410CC Engine‹ 1.9.2 10, 13 and 16KW, V-TWIN Engines ‹ 1.10.1 Generator LocationBattery Installation Battery Requirements‹ 1.10.2 Transfer Switch 10.2.1 7, 10, 13, and 16 kW Units if equipped10 Battery Cable Connections BatteryCheck Transfer Switch Operation Before Initial START-UPElectrical Checks Generator Tests Under Load Checking Automatic Operation7KW Natural GAS only ‹ 2.7.1 7 KW Units Engine Governor Adjustment‹ 3.1.3 Manual Position ‹ 3.1.1 Auto PositionSequence of Automatic Operation Automatic Transfer OperationManual Transfer Operation ‹ 3.1.4 Choke Operation‹ 3.4.2 Transfer Back to Utility Power Source Setting the Exercise Timer‹ 3.6.2 High Temperature Switch ‹ 3.6.1 LOW OIL Pressure Switch‹ 3.6.3 Overcrank Approximate Crank Cycle TimesChecking the Engine OIL Level ‹ 3.6.6 LOW BatteryFuses ‹ 3.6.5 RPM Sensor FailureChanging the Engine OIL ‹ 4.3.1 OIL Change Intervals‹ 4.3.2 Engine OIL Recommendations Spark Plugs ‹ 4.4.1 7, 13, and 16KW Generators‹ 4.4.2 10KW Generators Valve Clearance Battery Maintenance11 Cooling Vent Locations Cooling System‹ 4.11.2 Return to Service OUT of Service Procedure‹ 4.11.1 Removal from Service Corrosion ProtectionBe performed by the nearest Authorized Dealer Service ScheduleProblem Cause Correction Troubleshooting GuideAir-cooled Generators Air-cooled Generators Air-cooled Generators Mounting Dimensions Electrical Data Engine Wiring Customer Connection Battery Charger Engine Alternator Engine Wiring Stator Electronic Voltage Regulator Manual Auto Scsm Neutral Electrical Data Electrical Data Sheet Metal PAINT/MATERIAL Code Legend Part NO. QTY. Description Air-cooled Generators Control Panel Drawing No F9695-C QTY Description Exploded Views and Parts Lists BOX Load Center Exploded Views and Parts Lists Description QTY Exploded Views and Parts Lists Washer Flat M8 5/16 Exploded Views and Parts Lists Crankcase Exploded Views and Parts Lists Intake Adapter Exploded Views and Parts Lists PIN, Piston D20 Exploded Views and Parts Lists SCREW, Taptite M6-1.0X8 Yellow Chrome Air-cooled Generators 7kW, GN-410 Engine Drawing No F9422-B ADAPTOR, Engine Exploded Views and Parts Lists ADATOR, Engine 7KW CASTING, Twin Regulator Housing 7KW Exploded Views and Parts Lists Brkt Regulator Mounting Your Warranty Rights and Obligations MANUFACTURER’S Emission Control System Warranty CoveragePURCHASER’S/OWNER’S Warranty Responsibilities Emission Related Parts Include the Following Emission Control System WarrantyGenerac Power Systems Standard Limited Warranty for