Generac Power Systems 5252, 5254, 5251 Reconfiguring the Fuel System, ‹ 1.9.1 7 KW, 410CC Engine

Page 10

Section 1 — General Information

Air-cooled Generators

1.9RECONFIGURING THE FUEL SYSTEM

‹1.9.1 7 KW, 410CC ENGINE

To reconfigure the fuel system from NG to LP, follow these steps (Figure 1.4):

NOTE:

The primary regulator for the propane supply is NOT INCLUDED with the generator. A fuel pres- sure of 10 to 12 inches of water column (0.36 to

0.43psi) to the fuel inlet of the generator MUST BE SUPPLIED.

1.Turn off the main gas supply (if connected).

2.Open the roof and remove the door.

3.Remove the battery (if installed).

4.Disconnect wire #0 and wire #14 from the gas solenoid on top of the demand regulator.

5.Remove the carburetor fuel hose from the outlet port of the demand regulator.

6.Remove the demand regulator by removing the fastener that retains the regulator mounting bracket.

7.Remove the square headed steel pipe plug from outlet port #1 and the brass hose barb fitting from outlet port #2.

8.Refit the brass hose barb fitting to outlet port #1 and the square headed steel pipe plug to outlet port #2.

Figure 1.4 – Demand Regulator

HOSE & PLUG

SWITCHED SIDES

NOTE:

Use an approved pipe sealant or joint compound on all threaded fittings to reduce the possibility of leakage.

9.Reverse procedure steps 1-6 to reinstall demand regulator.

10.Take the plastic plug supplied in the poly-bag with the generator and press it into the 3/4” hole on the bottom of the air cleaner base (Figure 4.6).

11.Reverse the procedure to convert back to natural gas.

12.Check for gas leakage at the pipe plug, hose con- nection and fittings.

‹1.9.2 10, 13 AND 16KW, V-TWIN ENGINES

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

NOTE:

The primary regulator for the propane supply is NOT INCLUDED with the generator. A fuel pres- sure of 10 to 12 inches of water column (0.36 to

0.43psi) to the fuel inlet of the generator MUST BE SUPPLIED.

1.Open the roof.

2.For 10kW units: Loosen clamp and slide back the air inlet hose.

•Slide fuel selector on carburetor out towards the back of the enclosure (Figures 1.5 and 1.6).

•Return the inlet hose and tighten clamp secure- ly.

For 13 and 16kW units: remove the air cleaner cover.

FUEL HOSE

PIPE

FUEL HOSE

• Slide the selector lever out towards the back of

the enclosure (Figures 1.7 and 1.8).

PLUG

BRASS HOSE

BRASS HOSE

FITTING

FITTING

• Return the air cleaner cover and tighten the two

thumb screws.

ADJUSTMENT SCREW

OUTLET PORT

3.

Close the roof.

4.

Reverse the procedure to convert back to natural

FUEL JET

gas.

NG FUEL SYSTEM

LP FUEL SYSTEM

STATIC

PRESSURE

TAP

RUNNING

PRESSURE

TAP

8

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Contents Listed Introduction Authorized Dealer LocationTroubleshooting Post Installation Start-up AdjustmentsMaintenance Introduction Inside Front Cover Warning   Electrical Hazards  ‹ Standards IndexProtection Systems UNPACKING/INSPECTIONBreaker for Bedrooms Generator 7kW, Single Cylinder GH-410 Engine‹ 1.5.1 Generator Specifications‹ 1.5.2 Engine Fuel Consumption System SET LEDFuel Requirements Recommendations ‹ 1.8.1 BTU Flow Requirements Natural GAS‹ 1.9.1 7 KW, 410CC Engine Reconfiguring the Fuel System‹ 1.9.2 10, 13 and 16KW, V-TWIN Engines Location ‹ 1.10.1 Generator‹ 1.10.2 Transfer Switch Battery RequirementsBattery Installation 10.2.1 7, 10, 13, and 16 kW Units if equippedBattery 10 Battery Cable ConnectionsBefore Initial START-UP Check Transfer Switch OperationElectrical Checks Checking Automatic Operation Generator Tests Under Load7KW Natural GAS only Engine Governor Adjustment ‹ 2.7.1 7 KW Units‹ 3.1.1 Auto Position ‹ 3.1.3 Manual PositionManual Transfer Operation Automatic Transfer OperationSequence of Automatic Operation ‹ 3.1.4 Choke OperationSetting the Exercise Timer ‹ 3.4.2 Transfer Back to Utility Power Source‹ 3.6.3 Overcrank ‹ 3.6.1 LOW OIL Pressure Switch‹ 3.6.2 High Temperature Switch Approximate Crank Cycle TimesFuses ‹ 3.6.6 LOW BatteryChecking the Engine OIL Level ‹ 3.6.5 RPM Sensor Failure‹ 4.3.1 OIL Change Intervals Changing the Engine OIL‹ 4.3.2 Engine OIL Recommendations ‹ 4.4.1 7, 13, and 16KW Generators Spark Plugs‹ 4.4.2 10KW Generators Battery Maintenance Valve ClearanceCooling System 11 Cooling Vent Locations‹ 4.11.1 Removal from Service OUT of Service Procedure‹ 4.11.2 Return to Service Corrosion ProtectionService Schedule Be performed by the nearest Authorized DealerTroubleshooting Guide Problem Cause CorrectionAir-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 MANUFACTURER’S Emission Control System Warranty Coverage Your Warranty Rights and ObligationsPURCHASER’S/OWNER’S Warranty Responsibilities Emission Control System Warranty Emission Related Parts Include the FollowingGenerac Power Systems Standard Limited Warranty for
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