Manuali utente per Guardian Technologies 4451 & 4986

Sommario

• Stator Insulation Resistance Test

  13
• GENERAL

  13
• TESTING ALL STATOR WINDINGS TO GROUND

  14
• TEST BETWEEN WINDINGS:

  14
• Table Of Contents

  1
• Rotor Insulation Resistance Test

  15
• Cleaning the Generator

  15
• Drying the Generator

  15
• Generator Fundamentals

  3
• Magnetism

  3
• Engine DC Control System

  16
• Electromagnetic Fields

  3
• Electromagnetic Induction

  3
• Printed Circuit Board .

  16
• A Simple AC Generator

  4
• GENERAL

  16
• A More Sophisticated AC Generator

  4
• CIRCUIT BOARD CONNECTIONS

  16
• Dip switch Positions .

  16
• Battery

  16
• Measuring Electricity

  6
• RECOMMENDED BATTERY

  16
• Meters

  6
• The VOM .

  6
• Measuring AC Voltage

  6
• CIRCUIT CONDITION - REST

  20
• Measuring DC Voltage

  6
• CIRCUIT CONDITION - START

  22
• Measuring AC Frequency

  6
• CIRCUIT CONDITION - RUN

  24
• Measuring Current

  7
• CIRCUIT CONDITION - STOP .

  26
• Measuring Resistance .

  7
• FAULT SHUTDOWN

  27
• Electrical Units

  8
• Ohm's Law

  8
• Troubleshooting Flowcharts .

  28
• Description And Components

  9
• Introduction

  28
• If Problem Involves AC Output .

  28
• Introduction

  9
• Engine-Generator Drive System .

  9
• The AC Generator .

  9
• Rotor Assembly

  9
• Stator Assembly

  10
• or Residual Voltage (2-12 VAC)

  29
• Brush Holder and Brushes

  10
• Other AC Generator Components

  10
• Droop When Load is Applied

  30
• EXCITATION CIRCUIT BREAKER

  10
• VOLTAGE REGULATOR

  11
• No Battery Charge Output .

  31
• ADJUSTMENT PROCEDURE

  11
• No 10 Amp Battery Charge Output

  31
• Circuit Breakers

  12
• Rotor Residual Magnetism

  12
• Engine Will Not Crank

  32
• Field Boost Circuit

  12
• Operation .

  12
• Engine Cranks But Will Not Start .

  33
• STARTUP

  12
• Engine Starts Hard and Runs Rough

  34
• ON-SPEED OPERATION

  12
• FIELD EXCITATION

  12
• Engine Starts Then Shuts Down

  34
• AC POWER WINDING OUTPUT .

  12
• BATTERY CHARGE WINDING OUTPUT

  12
• 10 Amp Fuse (F1) Blowing .

  35
• 10 Amp BATTERY CHARGE WINDING OUTPUT

  12
• Unit Overspeeds

  36
• Insulation Resistance

  13
• The Megohmmeter

  13
• Idle Control “RPM Does Not Decrease”

  36
• GENERAL

  13
• TESTING STATOR INSULATION

  13
• When Load Is Applied”

  36
• TESTING ROTOR INSULATION

  13
• HI-POT TESTER

  13
• Engine “Hunts” / Erratic Idle .

  36
• Test 39 - Check Carburetion

  58
• Diagnostic Tests

  37
• Test 40 - Valve Adjustment

  58
• Introduction

  37
• Down Test / Compression Test

  59
• TEST 2 - CHECK MAIN CIRCUIT BREAKER

  37
• TEST 43: Check Start Stop Relay (SSR)

  60
• TEST 3- TEST EXCITATION CIRCUIT BREAKER

  38
• TEST 44: TEST STARTER CONTACTOR RELAY (SCR)

  61
• TEST 4 - FIXED EXCITATION TEST/ROTOR AMP DRAW

  38
• TEST 45: CHECK WIRE 15 CIRCUIT

  61
• TEST 5 - CHECK STEPPER MOTOR CONTROL

  40
• TEST 46: CHECK WIRE 14 CIRCUIT

  61
• Test 6 - Wire Continuity

  41
• TEST 47: Check Fuel Shutoff Solenoid

  61
• Test 7 - Check Field Boost

  41
• TEST 48: CHECK HOURMETER

  62
• TEST 8 - DIODE/RESISTOR

  42
• TEST 49: CHECK WIRE 15B

  62
• TEST 9 - TEST STATOR

  43
• TEST 50: CHECK WIRE 167

  62
• TEST 10 - SENSING LEADS

  44
• TEST 51: CHECK Wires 11S & 44S

  62
• TEST 11 - EXCITATION WIRING

  45
• TEST 52: CHECK IDLE CONTROL SWITCH (SW2)

  63
• TEST 12 - CHECK BRUSH LEADS

  45
• TEST 53: CHECK IDLE CONTROL WIRING

  63
• Test 13 - Check Brushes & Slip Rings

  45
• Test 54: Check Idle Control Transformers

  64
• Test 14 - Check Rotor Assembly

  46
• TEST 55: CHECK TR1 & TR2 Wiring

  64
• Test 15 - Check Load Voltage & Frequency

  46
• Test 56: CHoKe Test

  65
• Test 16 - Check Load Watts & Amperage

  46
• TEST 17 - CHECK BATTERY CHARGE OUTPUT

  47
• TEST 18 - CHECK 10 Amp BATTERY CHARGE OUTPUT

  47
• Disassembly and Exploded Views

  66
• Test 19 - Check Battery Charge Rectifier

  47
• Major Disassembly

  66
• TEST 20 - CHECK 10 AMP CIRCUIT BREAKER

  48
• Generator – Figure A

  68
• Test 21- Check 10 Amp Fuse

  48
• Frame, Handle & Wheels – Figure B .

  70
• Test 22- Check Battery & Cables

  48
• TEST 23- Check Voltage at Starter Contactor

  49
• Test 24 - Check Starter Contactor

  49
• Electrical Data

  72
• Test 25 - Check Starter Motor

  49
• Hourmeter) – Drawing No. 0E0228

  72
• Performance:

  49
• CHECKING THE PINION:

  50
• Without Hourmeter) – Drawing No. 0E0229-A

  74
• TOOLS FOR STARTER PERFORMANCE TEST:

  50
• Measuring Current:

  50
• Tachometer:

  50
• Hourmeter) – Drawing No. 0D6297-A

  78
• Test Bracket:

  51
• Remove Starter Motor:

  51
• Drawing No. 0G0731

  80
• Testing Starter Motor:

  51
• TEST 26 - Test Starter Contactor Relay (SCR)

  51
• Drawing No. 0G0733

  82
• TEST 27- Check Start-Run-Stop Switch

  52
• TEST 28- Check Start-Run-Stop (SW1) Wiring

  52
• Transfer Switch – Drawing No. 0G1065

  83
• Test 29 - Check Ignition Spark

  53
• INTERCONECTION DRAWING – 17.5 KW GENERATOR

  84
• Test 30 - Check Spark Plugs

  53
• TEST 31 - Remove Wire 18 / Shutdown Lead

  54
• Specifications & Charts

  86
• TEST 32 - TEST START STOP RELAY

  54
• TEST 33- TEST WIRE 167

  55
• Generator Specifications

  86
• TEST 34 - TEST START STOP RELAY WIRING

  56
• Engine Specifications

  86
• Test 35 - Check and Adjust Ignition Magnetos

  56
• Engine Speeds and Voltage Specifications

  86
• TEST 36: TEST FUEL SHUTOFF SOLENOID

  57
• Torque Specifications

  87
• TEST 37: TEST FUEL SHUTOFF SOLENOID VOLTAGE

  57
• TRIM Torque Specifications

  87
• TEST 38: CHECK FUEL PUMP

  57