Generac Power Systems QS-4.0G Generator Manuals

Manuals and User Guides for Generac Power Systems QS-4.0G Generator. We have 1 Generac Power Systems QS-4.0G Generator manual available for free PDF download: User Manual

Generac Power Systems QS-4.0G User Manual

Generac Power Systems QS-4.0G User Manual (38 pages)

Brand: Generac Power Systems | Category: Portable Generator | Size: 2 MB

Table of Contents

Notice
2
Generator Fundamentals
4
Why Generators Produce Electricity
4
How the Rotor Gets Regulated Direct Current
5
How the Generator Operates
5
Introduction to Troubleshooting
7
Troubleshooting Tools and Equipment
7
Rotor Rotational Speed
8
Relationship of Voltage and Frequency
8
Generator A-C Connection System
8
The Generator Thermal Protector
8
Effects of Engine Power
9
Effects of Dirt and Moisture on Marine Generators
9
Troubleshooting Chart
9
Troubleshooting Flow Chart
10
Insulation Resistance Tests
11
Testing Stator Insulation
11
Testing Rotor Insulation
12
Test between Isolated Windings
12
Test between Parallel Windings
12
Drying the Generator
13
Cleaning the Generator
13
Test Rotor Insulation
13
Diagnostic Tests
14
Check No-Load A-C Voltage and Frequency
14
Check Load Voltage and Frequency
15
Check/Adjust Engine Governor
15
Check Field Boost Circuit
15
Check Stator Excitation Windings
16
Check Stator Power Windings
17
Check Field Circuit
17
Check Voltage Regulator
18
Check Voltage Regulator Sensing
19
Adjustments
20
Engine Governor Adjustment
20
Voltage Regulator Adjustment
21
Engine Carburetor Adjustment
21
Wiring Diagram
22
Control Panel & Connection Box Removal
23
Removal of Connection Panel
23
Removal of Control Panel Assembly
24
Control Panel and Connection Box Assembly
25
Generator Disassembly
26
Removal of Rear Bearing Carrier Plate
26
Removal of Brush Holders
26
Removal of Rear Bearing Carrier
26
Removal of Stator Assembly
27
Removal of Blower Housing
27
Removal of Rotor Assembly
28
Removal of Engine Plate
28
Exploded View of Generator Assembly
29
Components Inspection and Testing
30
Rear Bearing Carrier Plate and Gasket
30
Rear Bearing Carrier
30
Stator Assembly
30
Blower Housing
31
Rotor Assembly
31
Fan & Ring Gear Assembly
31
Coupling Plate
31
Brush Holder and Brushes
32
Generator Reassembly
33
Install Engine Plate, Fan & Ring Gear and Coupling Plate
33
Install Blower Housing
34
Install Stator Assembly
34
Install Rear Bearing Carrier
34
Install Brushes and Brush Holders
35
Install Rear Bearing Carrier Plate
35
Operational Tests and Adjustments
36
Preparation before Use
36
Starting the Engine
37
Operational Tests
37

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