Generac Power Systems Guardian 5412 Manuals

Manuals and User Guides for Generac Power Systems Guardian 5412. We have 1 Generac Power Systems Guardian 5412 manual available for free PDF download: Repair Manual

Generac Power Systems Guardian 5412 Repair Manual

Generac Power Systems Guardian 5412 Repair Manual (82 pages)

Diagnostic Repair Manual

Brand: Generac Power Systems | Category: Inverter | Size: 10.95 MB

Table of Contents

Table of Contents
3
Section 1

5
Safety

5
Generator Fundamentals

5
Section 2

10
Major Generator Components

10
- Rotor Assembly
  10
- Stator Assembly
  10
- Brush Holder
  11
- Excitation CIRCUIT COMPONENTS
  11
- Crankcase BREATHER
  12
- Control Panel Component Identification
  13
- Major Generator Components
  13
Section 3

14
Insulation Resistance Tests

14
- Effects of Dirt and Moisture
  14
- Insulation Resistance Testers
  14
- Drying the Generator
  14
- Cleaning the Generator
  14
- Stator Insulation Resistance
  15
- Test
  15
- Testing Rotor Insulation
  16
- The Megohmmeter
  16
Section 4

17
Measuring Electricity

17
- Meters
  17
- The vom
  17
- Measuring Ac Voltage
  17
- Measuring DC Voltage
  17
- MEASURING AC Frequency
  17
- Test
  17
- Measuring Current
  18
- Measuring Resistance
  18
- Test
  18
- Electrical Units
  19
- Ohm's Law
  19
Section 5

20
Engine DC Control System

20
- Introduction
  20
- Operational Analysis
  20
- Printed Circuit Board
  24
- Battery
  24
- 7.5 Amp Fuse
  25
- Start-Stop Switch
  25
- Test
  25
- Starter Contactor Relay & Starter Motor
  26
Troubleshooting Flowcharts

27
- If Problem Involves Ac Output
  27
- Problem 4
  27
- High or Low
  27
  - VOLTAGE & Frequency ARE both HIGH or LOW
    27
  - Test
    27
- Problem
  28
- Generator Produces Zero Voltage or Residual Voltage (5-12VAC)
  28
- Test
  28
- Excessive Voltage/Frequency DROOP WHEN LOAD IS APPLIED
  29
- Test
  29
- Engine Overspeed Warning Code Flashing on Sw1 Led (4 Flashes)
  30
- PRIMING FUNCTION DOES NOT Work (GASOLINE MODELS)
  30
- Test
  30
- ENGINE will NOT Crank
  31
- Test
  31
- ENGINE Cranks but will NOT START (GASOLINE UNITS)
  32
- Test
  32
- ENGINE Cranks but will NOT START (LP UNITS)
  33
- Test
  33
- Engine Starts Hard and Runs Rough (Gasoline Units)
  34
- Test
  34
- Engine Starts Hard and Runs Rough (Lp Units)
  35
- Test
  35
- Or Low Oil Pressure Fault (5 Flashes)
  36
  - Troubleshooting Flowcharts
    36
  - Test
    36
- Problem 10 - 7.5 Amp (F1) Fuse Blowing
  37
- Test
  37
Section 7

38
Diagnostic Tests

38
- Introduction
  38
- Check No-Load Voltage and Frequency
  38
- Check Stepper Motor Control
  38
- Test
  38
- Fixed Excitation Test/Rotor Amp Draw
  39
  - Test
    39
  - Test
    40
- Check Field Boost
  41
- Test Stator DPE Winding
  41
- Check Sensing Leads/Power Windings
  42
- Test
  42
- Check Brush Leads
  43
- Test
  43
- Check Brushes & Slip Rings
  44
- Test
  44
- Check Main Circuit Breaker
  45
- Check Load Voltage & Frequency
  45
- Check Load Watts & Amperage
  45
- Try Cranking the Engine
  46
- Check Fuel Pump
  46
- Check 7.5 Amp Fuse
  47
- Test
  47
- Check Battery & Cables
  47
- Check Power Supply to Printed Circuit Board
  47
- Check Continuity of Wire 17
  48
- Test
  48
- Check Start-Stop Switch
  48
- Check Power Supply to Wire 56
  49
- Check Starter Contactor Relay
  49
- Test
  49
- Check Starter Contactor
  50
- Check Starter Motor
  50
- Test
  50
- Check Fuel Supply
  53
- Check Wire 14 Power Supply
  54
- TEST 27 - Check Wire 18
  55
- (Gasoline Models)
  55
- Check Ignition Spark
  56
- Check Spark Plugs
  57
- Check and Adjust Ignition Magnetos
  57
  - Check Valve Adjustment
    59
  - Check Carburetion
    60
  - Check Choke Solenoid
    60
  - Check Engine / Cylinder Leak down Test / Compression Test
    61
  - Check Oil Pressure Switch
    62
  - Test Wire 86 for Continuity
    63
  - Test Oil Temperature Switch
    63
  - Test Wire 85 for Continuity
    64
  - Test Choke Heater
    64
  - Check LPG Fuel Solenoid
    65
Section 8

66
Exploded Views / PART NUMBERS

66
- Base & Pulley Drawing
  66
- Enclosure Drawing
  68
- Control Panel Drawing
  70
- Engine Accessories Drawing
  72
- Rv Engine Drawing
  74
- Rotor and Stator Drawing
  76
Section 9

78
Specifications & Charts

78
Section 10

79
Electrical Data

80
- Electrical Schematic and Wiring Diagram
  80
- Electrical Data
  81

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