User Manuals: Guardian 4760 Portable Generator

Manuals and User Guides for Guardian 4760 Portable Generator. We have 2 Guardian 4760 Portable Generator manuals available for free PDF download: Repair Manual, Diagnostic Repair Manual

Guardian 4760 Diagnostic Repair Manual

Guardian 4760 Diagnostic Repair Manual (151 pages)

AUTOMATIC HOME STANDBY GENERATORS

Brand: Guardian | Category: Inverter | Size: 10 MB

Table of Contents

Electrical Data

2
Air-Cooled, Prepackaged Automatic Standby Generators

2
04389, 04758 (6 Kw NG, 7 Kw LP)

2
Title

2
- Electrical Formulas
  3
- Specifications
  4
- Fuel Consumption
  4
- Stator Winding Resistance Values / Rotor Resistance
  4
- Mounting Dimensions
  5
- Major Features
  7
- Part 1 General Information
  8
- Generator Identification
  9
- Prepackaged Installation Basics
  10
- Power Source and Load Lines
  12
- System Control Interconnections
  12
- Preparation before Use
  13
- Testing, Cleaning and Drying
  14
- Visual Inspection
  14
- Measuring Ac Voltage
  14
- Measuring DC Voltage
  14
- Measuring Ac Frequency
  15
- Measuring Resistance
  15
- Electrical Units
  16
- Ohm's Law
  16
- Insulation Resistance
  17
- Cleaning the Generator
  19
- Drying the Generator
  19
- Engine-Generator Protective Devices
  20
- Overspeed Shutdown
  20
- Overcrank Shutdown
  20
- Operating Instructions
  21
- Control Panel
  21
- Hour Meter
  21
- Auto-Off-Manual Switch
  21
- Protection Systems
  22
- Manual Transfer to "Standby" and Manual Startup
  22
- To Select Automatic Operation
  22
- Automatic Operating Parameters
  24
- Automatic Operating Sequences
  24
- Section 2.1 Description & Components
  27
- Rotor Assembly
  27
- Stator Assembly
  28
- Other Ac Generator Components
  28
- Brush Holder and Brushes
  28
- Voltage Regulator
  29
- Operational Analysis
  30
- Rotor Residual Magnetism
  30
- Field Boost
  30
- Operation
  31
- Troubleshooting Flowcharts
  32
- Diagnostic Tests
  36
- Test 1- Check Main Circuit Breaker
  36
- Test 2- Check Ac Output Voltage
  37
- Test 4- Fixed Excitation Test /Rotor Amp Draw Test
  38
- Test 7: Testing the Stator with a vom
  40
- Test 8 - Resistance Check of Rotor Circuit
  41
- Test 9 - Check Brushes and Slip Rings
  42
- Test 10 - Test Rotor Assembly
  43
- Test 11 - Check Ac Output Frequency
  43
- Test 14 - Check Voltage and Frequency under Load
  45
- Test 16 - Check Engine Condition
  45
- Section 3.1 Description & Components
  47
- Transfer Mechanism
  48
- Transfer Relay
  49
- Neutral Lug
  49
- Manual Transfer Handle
  49
- Terminal Block
  49
- Fuse Holder
  50
- Section 3.2 Operational Analysis
  51
- Utility Source Voltage Available
  52
- Utility Source Voltage Failure
  53
- Transfer to Standby
  54
- Utility Restored
  56
- Utility Restored, Retransfer Back to Utility
  58
- Transfer Switch in Utility
  59
- Troubleshooting Flowcharts
  60
- Introduction to Troubleshooting
  60
- Section 3.4 Diagnostic Tests
  62
- Part 4 DC Control
  72
- Description and Components
  73
- Terminal Strip / Interconnection Terminal
  73
- Circuit Board
  73
- Circuit Function
  74
- Operational Analysis
  78
- Initial Dropout of Utility Source Voltage
  79
- Engine Startup and Running
  83
- Initial Transfer to the "Standby" Source
  85
- Utility Voltage Restored / Re- Transfer to Utility
  87
- Engine Shutdown
  89
- Troubleshooting Flowcharts
  91
- Manual Switch
  98
- Tools for Starter Performance Test
  104
- Measuring Current
  104
- Testing Starter Motor
  105
- Test 55 - Check for Ignition Spark
  108
- Part 5 Operational Tests
  122
- System Functional Tests
  123
- Manual Transfer Switch Operation
  123
- Electrical Checks
  123
- Generator Tests under Load
  124
- Setting the Exercise Timer
  125
- Checking Automatic Operation
  125
- Major Disassembly
  127
- Front Engine Access
  129
- Table of Contents
  130
- Model 4389-0
  131
- Model 4389-0
  132
- Model 4389-1
  135
- Model 4389-1
  136

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Guardian 4760 Repair Manual

Guardian 4760 Repair Manual (156 pages)

Brand: Guardian | Category: Portable Generator | Size: 9 MB

Table of Contents

Diagnostic

3
- Table of Contents
  3
- Title
  3
- Electrical Formulas
  4
- Specifications
  5
  - Fuel Consumption
    5
  - Mounting Dimensions
    6
- General Information
  9
  - Operating Instructions
    22
- AC Generators
  27
  - Operational Analysis
    31
- DC Control
  32
  - Troubleshooting Flowcharts
    33
  - Diagnostic Tests
    38
- Operational Tests and Adjustments
  50
  - Utility Source Voltage Available
    54
  - Utility Source Voltage Failure
    55
  - Transfer to Standby
    56
  - Utility Restored
    58
  - Transfer Switch in Utility
    61
  - Introduction to Troubleshooting
    62
  - Description and Components
    75
  - Initial Dropout of Utility Source Voltage
    80
  - Utility Voltage Dropout and Engine Cranking
    82
  - Engine Startup and Running
    84
  - Engine Shutdown
    90
  - System Functional Tests
    122
  - Major Disassembly
    126
Electrical Data

129
- Model 4389-0
  130
  - Model 4389-0
    131
- Model 4456-0 & 4390-0
  132
  - Model 4389-3
    142
  - Model 4389-3
    143
- Model 4456-3 & 4390-3
  146
- Model 4456-3 & 4390-3
  147
  - Wiring Diagram
    151

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