Generac 04389-1, 04456-1, 04390-1 owner manual Introduction

Table of Contents

Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators

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	System Set LED			4
1.4	Your Generator			5
1.5	Specifications			6
	1.5.1	Generator		6
	1.5.2	Engine		6
1.6	Fuel Requirements and Recommendations....			7
1.7	Fuel Consumption			7
1.8	Reconfiguring the Fuel System			7
	1.8.1 7 kW, 410cc Engine			7
	1.8.2 12 kW and 15 kW, 990cc Engine			7
1.9	Location			8
	1.9.1	Generator		8
	1.9.2	Transfer Switch		8
1.10	Battery Installation			8
1.11	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

2.6Adjusting the Regulator (Natural Gas Only) ..11

2.7	Engine Governor Adjustment		12
	2.7.1	7 kW Units	12
	2.7.2 12 kW and 15 kW Units		13
	2.7.3	Additional Corrosion Protection	13
2.8	Voltage Regulator Adjustment		13

Section 3 – Operation		13
3.1	Break-in Procedure	13
3.2	Using the Auto/Off/Manual Switch	14
	3.2.1 “Auto” Position	14

	3.2.2	“Off” Position	14
	3.2.3	“Manual” Position	14
3.3	Automatic Transfer Operation		14
3.4	Sequence of Automatic Operation		14
3.5	Manual Transfer Operation		15
	3.5.1	Transfer to Generator
		Power Source	15
	3.5.2 Transfer Back to Utility
		Power Source	15
3.6	Setting the Exercise Timer		15
3.7	Protection Systems		16
	3.7.1 Low Oil Pressure Switch		16
	3.7.2	High Temperature Switch	16
	3.7.3	Overcrank	16
	3.7.4	Overspeed	16
Section 4 – Maintenance			16
4.1	Fuse	............................................................	16
4.2	Checking the Engine Oil Level		17
4.3	Changing the Engine Oil		17
	4.3.1	Engine Oil Recommendations	17
	4.3.2	Oil Change Procedure	17
4.4	Changing the Oil Filter		18
4.5	Changing the Engine Air Cleaner		18
	4.5.1 7 kW, 12 kW and 15 kW
		Generators	18
4.6	Spark Plug(s)		18
4.7	Battery Maintenance		19

4.8Adjusting GH-410/GT-990 Valve Clearance ..19

4.9	Cooling System		20
4.10	Attention After Submersion		20
4.11	Corrosion Protection		20
4.12	Out of Service Procedure		21
	4.12.1 Removal From Service		21
	4.12.2 Return to Service		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
		Generac® Power Systems, Inc.	1