10 specifications, 11 fuel consumption, 12 reconfiguring the fuel system – Generac Power Systems 004917-2 User Manual

Page 9

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1.10 SPECIFICATIONS

1.10.1 GENERATOR SPECIFICATIONS

1.10.2 ENGINE SPECIFICATIONS

Make ......................................................................................Ford
Displacement ..................................................................3.0 liters
Cylinder Arrangement ..............................................................V-6
Valve Arrangement ..............................................Overhead Valve
Firing Order ................................................................1-4-2-5-3-6
Number of Main Bearings............................................................4
Compression Ratio............................................................9.3 to 1
No. of Teeth on Flywheel ........................................................164
Ignition Timing at 1800 rpm..............................30 degrees BTDC
Spark Plug Gap ..................................................0.035-0.045 inch
Recommended Spark Plugs

Motor Craft..........................................................AG, SF 32PGM

Oil Pressure....................................................................40-50 psi
Crankcase Oil Capacity........................5.0 U.S. quarts (4.7 liters)
Recommended Engine Oil..........................................SAE 5W-20
Type of Cooling System ..................Pressurized, closed recovery
Cooling Fan ..............................................................Pusher Type
Cooling System Capacity..................3.0 U.S. gallons (11.4 liters)
Recommended Coolant ............................Use a 50-50 mixture of

ethylene glycol base
and de-ionized water.

1.11 FUEL CONSUMPTION

Natural Gas:

% of Load

25%

50%

75%

100%

m

3

/hr

3.1

5.9

8.5

11.0

ft

3

/hr

110.3

209.0

299.5

387.0

LP Vapor:

% of Load

25%

50%

75%

100%

m

3

/hr

1.3

2.4

3.5

4.5

ft

3

/hr

45.6

86.4

123.8

160.0

NOTE:

Fuel consumption is given at rated maximum con-
tinuous power output when using natural gas rated
at 1000 Btu per cubic foot. LP gas is rated at 2520
Btu per cubic foot. Actual fuel consumption
obtained may vary depending on such variables as
applied load, ambient temperature, engine condi-
tions and other environmental factors.

Fuel pressure for a natural gas set up should be five
inches to 14 inches of water column (0.18 to 0.5
psi) at all load ranges.

Fuel pressure for an LP vapor set up should be 11
inches to 14 inches of water column (0.4 to 0.5
psi) at all load ranges.

1.12 RECONFIGURING THE FUEL

SYSTEM

NOTE:

All models are configured for natural gas from the
factory.

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

1. Turn the main gas supply off.
2. Remove the carburetor fuel hose from the outlet

port (Port 1) of the demand regulator (Figure 1.8).

3. Remove the brass hose fitting from the outlet port

(Port 1) of the demand regulator.

4. Remove pipe plug from Port 2.
5. Install brass hose fitting into Port 2.
6. Install pipe plug into Port 1.
7. Connect carburetor gas hose to brass fitting.
8. Tighten all clamps and plugs.
9. Make sure fuel supply is of the proper pressure

and type for configuration.

10. Reverse the procedure to convert back to natural

gas.

Figure 1.8 — Reconfigure the Fuel System

NG FUEL SYSTEM

LP FUEL SYSTEM

Port 1

Port 2

FUEL HOSE

BRASS HOSE
FITTING

HOUSING
PORTS

OUT
PORT 2

PLUG

FUEL HOSE

BRASS HOSE
FITTING

HOUSING
PORTS

PLUG

OUT

PORT 1

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Section 1 — General Information

QUIETSOURCE

Liquid-cooled 30 kW Generators

Generac

®

Power Systems, Inc.

7

Single-phase

Model

4917-0

Rated Max. Cont.

27 (NG), 30 (LP)

AC Power Output (kW)
Rated voltage (volts)

120/240

No. of Rotor Poles

4

Driven Speed of Rotor

1800

Rotor Excitation System Direct excited brush type
Type of Stator

4 Wire

Rotor/Stator Insulation

Class F/H

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