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Table of Contents
Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators
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
Standards Index ..................................................3
Section 1 – General Information ..................4
1.1 Unpacking/Inspection ....................................4
1.2 Protection Systems ........................................4
1.3 NEC Requirement for Arc Fault Circuit
Interruption Breaker for Bedrooms ..............4
1.4 The Generator ..............................................5
1.5 Specifications ................................................6
1.6 System Set LED ............................................7
1.7 Fuel Requirements and Recommendations....7
1.8 Fuel Consumption ........................................7
1.9 Reconfiguring the Fuel System ......................7
1.10 Location ........................................................8
1.11 Battery Installation ........................................9
1.12 The Battery....................................................9
Section 2 – Post Installation Start-up
and Adjustments ......................10
2.1 Before Initial Startup ..................................10
2.2 Check Transfer Switch Operation................10
2.3 Electrical Checks ........................................10
2.4 Generator Tests Under Load ......................11
2.5 Checking Automatic Operation ....................11
2.6 Adjusting the Regulator (Natural Gas Only) ..12
2.7 Engine Governor Adjustment ......................13
2.8 Voltage Regulator Adjustment......................13
Section 3 – Operation ....................................14
3.1 Break-in Procedure......................................14
3.2 Using the Auto/Off/Manual Switch ..............14
3.3 Automatic Transfer Operation ....................14
3.4 Sequence of Automatic Operation................15
3.5 Manual Transfer Operation ........................15
3.6 Setting the Exercise Timer ..........................16
3.7 Protection Systems ......................................16
Section 4 – Maintenance ..............................17
4.1 Fuse ............................................................17
4.2 Checking the Engine Oil Level ....................17
4.3 Changing the Engine Oil ..............................18
4.4 Changing the Oil Filter ................................18
4.5 Changing the Engine Air Cleaner ................18
4.6 Spark Plug(s) ..............................................19
4.7 Battery Maintenance ....................................19
4.8 Adjusting GH-410/GT-990 Valve Clearance ..20
4.9 Cooling System............................................20
4.10 Attention After Submersion ........................21
4.11 Corrosion Protection ..................................21
4.12 Out of Service Procedure ............................21
4.13 Service Schedule ........................................22
Section 5 – Troubleshooting ........................23
5.1 Troubleshooting Guide ................................23
Section 6 – Electrical Data ............................24
Section 7 – Exploded Views and
Parts Lists....................................32
Section 8 – Mounting Dimensions..............53
Section 9 – Notes ............................................54
Section 10 – Warranty....................................56