Section 4.2

SHUTOFF VALVE AND REGULATOR

GENERAL

See Figure 1. The fuel shutoff valve (lockoff solenoid) and the secondary regulator are retained to a flat mounting bracket which, in turn, mounts to the gener- ator base cover. The fuel lockoff solenoid is retained to the mounting bracket by means of a u-bolt. The secondary regulator is retained to the mounting bracket with two 1/4"-20 x 3/4" long capscrews.

ITEM

QTY

DESCRIPTION

1

1

LP Gas Regulator

2

1

Fuel Lockoff Solenoid

3

1

U-Bolt-1.25" wide (5/16"-i 8)

4

2

3/4" NPT Street Elbow

5

1

3/4" NPT Close Nipple

6

1

3/8" NPT Street Elbow

7

1

1/2" x 3/8" NPT Fitting

8

1

Hose Clamp

9

1

1/2" ID Hose (11.5" long)

10

2

1/4"-20 x 3/4" Capscrew

11

2

1/4" Lockwasher

12

2

5/16" Lockwasher

13

2

5/16"-18 Hex Nut

14

1

Regulator Mounting Bracket

15

1

Sleeving (9" long)

 

 

 

 

 

 

 

 

 

 

Figure 1. Shutoff Valve & Regulator

ADJUSTMENTS

There are no adjustments on the fuel lockoff solenoid or the secondary regulator. This system is NOT equipped with a load block.

THE LP GAS REGULATOR

The secondary regulator is a GARRETSON® Model KN. It is designed for simplicity and simple operation. The regulator is suitable for use with low pressure vaporized gaseous fuels where dependable starting is a requirement. Recommended inlet pressure to the regulator is 11 inches water column.

The regulator comes with a 3l4 inch NPT fuel inlet and a 3/8 inch NPT fuel outlet.

The LOCKOFF ADJUSTMENT SCREW shown in Figure 2 has been preset at the factory. No additional adjustment is authorized.

Figure 2. LP Gas Regulator

DANGER! DO NOT ATTEMPT TO ADJUST

!THE GAS REGULATOR. REGULATOR ADJUSTMENTS SHOULD BE ATTEMPTED ONLY BY QUALIFIED GAS SERVICE TECHNI- CIANS WHO HAVE THE KNOWLEDGE AND SPECIALIZED EQUIPMENT FOR SUCH ADJUSTMENTS.

TESTING THE FUEL LOCKOFF SOLENOID

GENERAL:

The fuel lockoff solenoid is energized open by 12 volts DC power from the A6060 circuit board during engine cranking. The solenoid can also be energized open without cranking by actuating the fuel primer switch on the generator panel.

(Continued)

Page 4.2-1

Page 77
Image 77
Generac Power Systems 941-2, 940-2 service manual Adjustments, LP GAS Regulator, Testing the Fuel Lockoff Solenoid

941-2, 940-2 specifications

Generac Power Systems has established a strong reputation in the field of backup power solutions, particularly with its innovative products like the Generac 940-2 and 941-2 generator systems. These generators are designed to provide reliable power during emergencies, ensuring that homes and businesses can maintain operations seamlessly when grid power is disrupted.

One of the standout features of the Generac 940-2 and 941-2 models is their robust engine performance. Both generators utilize Generac’s patented engines, known for their durability and efficiency. These engines are built to withstand the most demanding conditions while providing a consistent power output. This reliability is crucial for users who depend on uninterrupted power supply for essential appliances and equipment.

In terms of technologies, the Generac 940-2 and 941-2 are equipped with advanced automatic transfer switch capabilities. This technology allows the generators to automatically start and supply power within seconds of an outage. This quick response time helps to ensure that critical systems remain operational without noticeable interruptions, which is vital for businesses and households alike.

Another important characteristic of these models is their user-friendly interface. The generators come with an intuitive digital controller that provides real-time information on power usage, system status, and maintenance needs. This technology makes it easy for users to monitor their generators and ensure they are always ready for an emergency.

The design of the Generac 940-2 and 941-2 also emphasizes noise reduction and aesthetic appeal. These units are engineered for quieter operation compared to traditional generators, making them suitable for residential areas. Their sleek appearance also fits well with modern home exteriors, enhancing rather than detracting from the property’s visual appeal.

Furthermore, these generators offer flexible fuel options, with the ability to run on natural gas or propane. This versatility allows users to choose the fuel source that best meets their needs, contributing to energy efficiency and lowering overall operating costs.

In summary, the Generac Power Systems 940-2 and 941-2 are exceptional generators that combine powerful performance with innovative technologies. Their automatic transfer switch capabilities, user-friendly controls, noise reduction features, and flexible fuel options make them an excellent choice for anyone seeking reliable backup power solutions. With these generators, users can rest assured knowing they have a dependable energy source ready when they need it most.