Generac Power Systems 005040-2 Fuel Consumption, Engine OIL Recommendations, ‹ 1.10.2 Generator

Section 1 — General Information

Guardian Liquid-cooled 25 kW Generator

‹ 1.10.2 GENERATOR	3. Remove the brass hose fitting from the outlet port
	(Port 1) of the demand regulator.

	Single-phase
Model	005040-2
Rated Max. Cont.	*25
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

*Rated power of generator is subject to and limited by such factors as ambient temperature, altitude, engine condition, and other factors. Engine power will decrease about 3.5% for each 1000 feet above sea level and will decrease an additional 1% for each 10°F above 60°F. Maximum output power of the generator is limited by maximum engine power.

1.11 FUEL CONSUMPTION

25 kW Models
Using Natural Gas	........................................441 cu. ft. per hour
Using LP Gas	175 cubic ft.(4.8 gal.) per hour

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.Move dip switch position 4 on the control board to the off position (LP vapor, see Figure 3.2 and Section 3.8).

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

Figure 1.8 — Reconfigure the Fuel System

	Port 1		Port 2
	FUEL HOSE	FUEL HOSE
PLUG	BRASS HOSE	BRASS HOSE	PLUG
	FITTING	FITTING
	OUT	OUT
	PORT 1	PORT 2

FUEL INLET

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.

NOTE:

Fuel consumption is given at rated maximum con- tinuous power output when using natural gas rated at 1000 Btu per cubic foot; or LP gas rated 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.

NG FUEL SYSTEM LP FUEL SYSTEM

NOTE:

Port 1 is for NG only and Port 2 is for LP vapor only. No provision for dual fuel has been made.

DANGER

Serious injury or damage may occur if not con-

!figured properly. Please consult an authorized Generac Service Dealer with any questions.

1.12RECONFIGURING THE FUEL SYSTEM FOR LP VAPOR

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).

1.13 ENGINE OIL RECOMMENDATIONS

The unit has been filled with 15W-40 engine oil at the factory. Use a high-quality detergent oil classified “For Service CC, SD, SE, SF.” Detergent oils keep the engine cleaner and reduce carbon deposits. Use oil having the following SAE viscosity rating, based on the ambient temperature range anticipated before the next oil change:

Temperature	Oil Grade (Recommended)
Above 80° F (27° C)	SAE 30W or 15W-40
32° to 80° F (-1° to 27° C)	SAE 20W-20 or 15W-40
Below 32° F (0° C)	SAE 10W or 15W-40

Generac® Power Systems, Inc. 7