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Guardian Plus 4389-3 User Manual

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GENERAC
POWER SYSTEMS, INC.
R
R
Installation and
Owner’s Manual
Air-cooled, Prepackaged
Automatic Standby Generators
Models:
04389-3 (6 kW NG, 7 kW LP)
04456-3 (12 kW NG, 12 kW LP)
04390-3 (13 kW NG, 15 kW LP)
DANGER
DEADLY EXHAUST FUMES. OUTDOOR INSTALLATION ONLY!
Not intended for use as Primary Power in place of utility or in
life-support applications.
L
I
S
T
E
D
C
U
S

Table of Contents

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Guardian Plus 4389-3 Specifications

General IconGeneral
BrandGuardian Plus
Model4389-3
CategoryPortable Generator
LanguageEnglish

Summary

SAFETY RULES

IMPORTANT SAFETY INSTRUCTIONS

Critical safety guidelines for installation, operation, and maintenance.

GENERAL HAZARDS

Risks associated with generator operation and maintenance.

IMPORTANT SAFETY HAZARDS

ELECTRICAL HAZARDS

Details dangers of electric shock from generator components and utility power.

FIRE HAZARDS

Explains fire prevention measures and proper installation compliance.

EXPLOSION HAZARDS

Warns about risks of explosion from fuel sources and proper handling.

STANDARDS INDEX

SECTION 1 - GENERAL INFORMATION

UNPACKING/INSPECTION

Procedure for inspecting generator contents for damage after unpacking.

PROTECTION SYSTEMS

Lists engine protection systems like low oil pressure and high temperature sensors.

NEC REQUIREMENT FOR ARC FAULT CIRCUIT INTERRUPTION

Explains National Electric Code requirements for AFCI breakers in bedrooms.

THE GENERATOR

SPECIFICATIONS

1.5.1 GENERATOR

Lists general generator specifications by model number.

1.5.2 ENGINE

Lists engine specifications by model number.

FUEL REQUIREMENTS AND RECOMMENDATIONS

RECONFIGURING THE FUEL SYSTEM

Provides instructions for converting the fuel system from natural gas to LP.

LOCATION

1.10.1 GENERATOR

Advises on proper placement and environmental considerations for generator installation.

TRANSFER SWITCH

1.10.2.1 7 kW, 12 kW and 15 kW Units

Installation rules and guidelines for the transfer switch enclosure.

THE BATTERY

SECTION 2 – POST INSTALLATION START-UP AND ADJUSTMENTS

BEFORE INITIAL START-UP

Steps to complete before starting the generator for the first time.

CHECK TRANSFER SWITCH OPERATION

Procedure to verify the proper functioning of the transfer switch.

ELECTRICAL CHECKS

Steps for performing electrical checks on the generator and utility supply.

GENERATOR TESTS UNDER LOAD

CHECKING AUTOMATIC OPERATION

Steps to verify the generator's automatic start and transfer sequence.

SECTION 3 – OPERATION

BREAK-IN PROCEDURE

Recommended procedure for breaking in the generator for future operation.

USING THE AUTO/OFF/MANUAL SWITCH

Explains the function and use of the Auto/Off/Manual switch.

AUTOMATIC TRANSFER OPERATION

SEQUENCE OF AUTOMATIC OPERATION

Describes the step-by-step process of the generator's automatic operation sequence.

MANUAL TRANSFER OPERATION

SETTING THE EXERCISE TIMER

PROTECTION SYSTEMS

LOW OIL PRESSURE SWITCH

Explains the function of the low oil pressure switch for engine shutdown.

HIGH TEMPERATURE SWITCH

Explains the function of the high temperature switch for engine shutdown.

OVERCRANK

Describes the overcrank protection feature that prevents engine damage.

SECTION 4 – MAINTENANCE

FUSES

Identifies the function and replacement of the generator's 15A and 7.5A fuses.

CHECKING THE ENGINE OIL LEVEL

Procedure for checking the engine oil level using the dipstick.

CHANGING THE ENGINE OIL

CHANGING THE ENGINE AIR CLEANER

Instructions for accessing and replacing the air cleaner element.

SPARK PLUG(S)

BATTERY MAINTENANCE

Procedure for inspecting and maintaining the generator's battery.

ADJUSTING GH-410/GT-990/760 VALVE CLEARANCE

ATTENTION AFTER SUBMERSION

CORROSION PROTECTION

Recommendations for washing, waxing, and spraying linkages for corrosion prevention.

OUT OF SERVICE PROCEDURE

Steps for preparing the generator for storage if it will be out of service for over 90 days.

SERVICE SCHEDULE

SECTION 5 – TROUBLESHOOTING

TROUBLESHOOTING GUIDE

A guide listing common problems, their causes, and suggested corrections.

SECTION 7 - ELECTRICAL DATA

DIAGRAM KEY

Explains the symbols and abbreviations used in the wiring diagrams.

ENGINE WIRING

Wiring diagram for the engine components.

CONTROL PANEL BOX

Wiring Diagram – V-Twin – Drawing No. 0E9016

Wiring Diagram – Single Cylinder – Drawing No. 0E9014

Wiring Diagram – Single Cylinder – Drawing No. 0E9015

Wiring Diagram – 8 Circuit Load Center – Drawing No. 0E7687A

Wiring Diagram – 12 Circuit Load Center – Drawing No. 0E7687$

SECTION 8 – EXPLODED VIEWS AND PARTS LISTS

Enclosure – Drawing No. 0F0080-C

Exploded view and parts list for the generator enclosure.

Control Panel - Drawing No. 0E9162-J

7 kW, 8 Circuit Load Center Assembly – Drawing No. 0E7975-B

12 kW and 15 kW, 12 Circuit Load Center Assembly – Drawing No. 0E7973-F

GT-990/760 Engine - Drawing No. 0E8774-M Part 1

GT-990/760 Engine – Drawing No. 0E8774-M Part 2

7 kW Generator – Drawing No. 0D3504-E

12 kW and 15 kW Generators GN410 Engine – Drawing No. 0F3981-A Part 1

GN410 Engine – Drawing No. 0F3981-A Part 1

GN410 Engine – Drawing No. 0F3981-A Part 2

SECTION 9 – MOUNTING DIMENSIONS

SECTION 10 - WARRANTY

CALIFORNIA EMISSION CONTROL WARRANTY STATEMENT

Details warranty rights and obligations for California emission control systems.

EMISSION CONTROL SYSTEM WARRANTY

GENERAC POWER SYSTEMS "TWO YEAR" LIMITED WARRANTY FOR GUARDIAN "PREPACKAGED EMERGENCY AUTOMATIC STANDBY GENERATORS"

WARRANTY SCHEDULE

Details the warranty coverage for labor and parts over a two-year period.

THIS WARRANTY SHALL NOT APPLY TO THE FOLLOWING:

Lists exclusions and conditions not covered by the warranty.

EMISSION RELATED PARTS INCLUDE THE FOLLOWING: