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Table of Contents
Guardian Liquid-cooled 40 kW Generator
Generac
®
Power Systems, Inc. 1
Introduction ......................Inside Front Cover
Read This Manual Thoroughly ......................IFC
Contents ........................................................IFC
Operation and Maintenance............................IFC
How to Obtain Service....................................IFC
Authorized Dealer Locator Number ..................IFC
Safety Rules ......................................................2
Section 1 – General Information..................4
1.1 Unpacking/Inspection ..................................4
1.1.1 Lifting the Generator........................4
1.2 The Generator..............................................4
1.3 Generator AC Connection Systems ..............4
1.4 Prepackaged Transfer Switch ......................4
1.5 Automatic System Operation........................4
1.6 Main Circuit Breaker ..................................5
1.7 Engine Protective Devices ............................5
1.7.1 Low Oil Pressure Switch ..................5
1.7.2 High Coolant
Temperature Switch ........................5
1.7.3 Low Coolant Level Switch ................5
1.7.4 Overspeed Shutdown ......................5
1.7.5 Overcrank Shutdown ......................5
1.7.6 DC Fuse............................................5
1.8 Specifications ..............................................5
1.8.1 Generator ........................................5
1.8.2 Engine..............................................6
1.9 Fuel Requirements
and Recommendations ............................6
1.9.1 Conversion to LP Gas Vapor ............6
1.10 Engine Oil Recommendations ......................7
1.11 Coolant ........................................................7
1.12 Emission Control System ............................7
Section 2 – Installation ..................................8
2.1 Basic Standby Electric System ....................8
2.2 Emergency Circuit Isolation Method ............9
2.3 Total Circuit Isolation Method......................9
2.4 Grounding the Generator ............................9
2.5 Generator AC Neutral Connections ..............9
2.6 Transfer Switch Start Signal Connections....9
2.6.1 Pre-Packaged Type Switch................9
2.6.2 “GTS” Type Switch ..........................9
2.7 Battery Installation ....................................10
2.7.1 Vented Batteries ............................10
2.8 Preparation Before Start-up ......................10
2.8.1 Prior to Initial Start-up ..................11
2.8.2 Transfer Switch..............................11
2.8.3 Fuel System....................................11
2.8.4 Generator Set Lubrication..............11
2.8.5 Engine Coolant ..............................11
2.8.6 Belt Tension ..................................11
2.8.7 Electrical System............................11
2.8.8 Rodent Protection ..........................11
Section 3 – Operation ..................................12
3.1 Control Console Components ......................12
3.1.1 AC Voltmeter ..................................12
3.1.2 AC Ammeter ..................................12
3.1.3 AC Frequency Meter ......................12
3.1.4 DC Voltmeter..................................12
3.1.5 Hourmeter......................................12
3.1.6 Auto/Off/Manual Switch..................12
3.1.7 Fault Indicator Lamp......................12
3.1.8 15-amp Fuse ..................................12
3.1.9 7.5 Amp Inline Fuse ......................12
3.1.10 Voltage-phase Selector Switch ........12
3.1.11 Set Exercise Time Switch ..............12
3.2 Using the Auto/Off/Manual Switch..............12
3.2.1 “Auto” Position................................12
3.2.2 “Off” Position..................................13
3.2.3 “Manual” Position ..........................13
3.3 Automatic Transfer Operation....................13
3.4 Sequence of Automatic Operation ..............13
3.5 Engine Heater ..............................................13
3.6 Weekly Exercise Cycle ................................14
Section 4 – Maintenance ............................14
4.1 Checking the Engine Oil Level....................14
4.2 Changing the Engine Oil and Filter ............15
4.2.1 Engine Oil Recommendations ........15
4.2.2 Oil and Filter Change Procedure ......15
4.3 Changing the Engine Air Cleaner................15
4.4 Spark Plugs................................................16
4.5 Battery Maintenance ..................................16
4.5.1 Battery Replacement ......................16
4.6 Cooling System ..........................................17
4.7 Overload Protection for
Engine DC Electrical System......................17
4.8 DC Fuse ....................................................17
4.9 Engine Coolant ..........................................17
4.10 Miscellaneous Maintenance........................17
4.10.1 Cleaning the Generator ..................17
4.10.2 Rodent Protection ..........................17
4.11 Out of Service Procedure ..........................18
4.11.1 Removal From Service....................18
4.11.2 Return to Service............................18
4.12 Service Schedule ........................................19
Section 5 – Troubleshooting ......................20
Section 6 – Electrical Data ..........................21
Section 7 – Exploded Views and
Parts Lists ..................................30
Section 8 – Notes ..........................................59
Section 9 – Warranty ....................................60