Section 1.2

MAJOR GENERATOR COMPONENTS

INTRODUCTION

Major components of the generator proper are shown in Figure 1, below. External sheet metal and other unrelated components are omitted from the drawing for clarity. These parts are:

 

 

Item

Description

 

1

Upper Fan Housing

 

2

Upper Cooling Fan

 

3

Permanent Magnet Rotor

 

4

Rotor Hub

 

5

Stator Retaining Ring

 

6

Stator Assembly

 

7

Stator Adapter

 

8

Engine

 

9

Lower Fan & Flywheel

 

10

Stepper Motor

 

 

 

 

 

 

 

 

 

 

Figure 1. Exploded View of Generator Proper

UPPER FAN HOUSING

As its name implies, this component houses and shields the upper cooling fan. See Figure 1, Item 1.

UPPER COOLING FAN

The Cooling Fan draws air into the generator through slots in the Upper Fan Housing. It is fastened to and rotates with the Permanent Magnet Rotor.

PERMANENT MAGNET ROTOR

Sixteen permanent magnets have been affixed to the Rotor. A starter ring gear is welded to the Rotor. The Rotor and Hub are balanced at the factory as an assembly and must be replaced as an assembly.

NOTE: The hub MUST be properly aligned during reassembly. The mounting bolt, housing opening and magnet must be properly aligned. In addition, match marks between the Hub and Rotor must be' aligned as indicated by an "ALIGN MARKS FOR BALANCE" decal. During assembly, use care to avoid damage to the Ignition Sensor.

DANGER! The permanent magnet rotor pro-

!duces an extremely strong magnetic force. Use care during installation to avoid pinched fingers.

Figure 2 Permanent Magnet Rotor Assembly

Page 1.2-1

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Generac Power Systems 941-2, 940-2 service manual Introduction, Upper FAN Housing, Upper Cooling FAN, Permanent Magnet Rotor

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.