Part 1 - General Information - Guardian 5240 Diagnostic Repair Manual

PART 1
GENERAL
INFORMATION
Air-cooled, Prepackaged
Automatic Standby Generators
1.1 Generator Identification ................................... 10
1.2 Prepackaged Installation Basics ..................... 11
Introduction ......................................................11
Selecting A Location ........................................11
Grounding The Generator ................................11
The Fuel Supply ...............................................11
The Transfer Switch / Load Center ...................11
Power Source And Load Lines .........................13
System Control Interconnections .....................13
1.3 Preparation Before Use ................................... 14
General ............................................................14
Fuel Requirements...........................................14
Fuel Consumption ............................................14
Reconfiguring The Fuel System .......................14
Engine Oil Recommendations .........................16
1.4 Testing, Cleaning and Drying........................... 16
Meters ............................................................17
The VOM ..........................................................17
Measuring AC Voltage .....................................17
Measuring DC Voltage .....................................17
Measuring AC Frequency ................................17
Measuring Current ...........................................18
Measuring Resistance .....................................18
Electrical Units .................................................19
Ohm's Law .......................................................19
TABLE OF CONTENTS
PART TITLE
1.1 Generator Identification
1.2 Prepackaged Installation
Basics
1.3 Preparation Before Use
1.4 Testing, Cleaning and Drying
1.5 Engine-Generator Protective
Devices
1.6 Operating Instructions
1.7 Automatic Operating
Parameters
Visual Inspection ..............................................20
Insulation Resistance .......................................20
The Megohmmeter...........................................20
Stator Insulation Resistance Test .....................21
Rotor Insulation Resistance Test ......................22
Cleaning The Generator...................................22
Drying The Generator ......................................22
1.5 Engine-Generator Protective Devices ............. 23
General ............................................................23
Low Battery ......................................................23
Low Oil Pressure Shutdown .............................23
High Temperature Switch .................................23
Overspeed Shutdown ......................................23
RPM Sensor Failure .........................................23
Overcrank Shutdown .......................................24
1.6 Operating Instructions ..................................... 25
Control Panel ...................................................25
To Select Automatic Operation ........................26
Manual Transfer To "Standby" And
Manual Startup ....................................26
Manual Shutdown And Retransfer
Back To "Utility" ....................................27
1.7 Automatic Operating Parameters .................... 28
Introduction ......................................................28
Automatic Operating Sequences .....................28
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25
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