Generac 004188-1 User Manual

POWER SYSTEMS, INC.®Owner’s ManualLiquid-cooled, PrepackagedStandby GeneratorsModel Numbers(Natural Gas)004188-1004370-2004474-1(Liquid Propane Vapor)

8 Generac®Power Systems, Inc.If an open bottom is used, the engine-generator isto be installed over non-combustible materialsand should be located suc

Generac®Power Systems, Inc. 9GENERATOR MOUNTING AND SUPPORTRetain the generator compartment to a concrete slabwith 1/4-inch masonry type anchor bolts.

10 Generac®Power Systems, Inc.GENERATOR AC NEUTRAL CONNECTIONSGenerac uses an UNGROUNDED AC neutral.Grounding is recommended only at the main servicee

Generac®Power Systems, Inc. 11PREPARATION BEFORE START-UPThe instructions in this section assume that the stand-by generator has been properly install

12 Generac®Power Systems, Inc.CONTROL CONSOLE COMPONENTSThe components of a liquid-cooled generator controlconsole (Figure 3.1) are as follows:Figure

Generac®Power Systems, Inc. 13NOTE:This fuse will not remove the + battery input powerfrom the PCB when it opens. This means the exercisetimer will no

14 Generac®Power Systems, Inc.ENGINE HEATERYour Generac standby generator comes equipped with ablock heater (Figure 4.1), similar to the block heaters

Generac®Power Systems, Inc. 15• If oil level is below the dipstick ADD mark, remove oilfill cap. Add the recommended oil to bring oil levelup to the

16 Generac®Power Systems, Inc.CHANGING ENGINE OILRefer to maintenance performed by authorized servicefacilities for engine oil and filter change frequ

Generac®Power Systems, Inc. 17MISCELLANEOUS MAINTENANCECLEANING THE GENERATORKeep your generator as clean and as dry as possible.Dirt and moisture tha

Generac®Power Systems, Inc.INTRODUCTIONThank you for purchasing this model of the standby gen-erator set product line by Generac Power Systems. Every

18 Generac®Power Systems, Inc.Section 5 — TroubleshootingGuardian Liquid-cooled 15 kW, 20 kW and 25 kW GeneratorsPROBLEM CAUSE CORRECTIONEngine won’t

Generac®Power Systems, Inc. 19Section 6 — Scheduled MaintenanceGuardian Liquid-cooled 15 kW, 20 kW and 25 kW GeneratorsFollowing is a recommended main

20 Generac®Power Systems, Inc.Section 6 — Scheduled MaintenanceGuardian Liquid-cooled 15 kW, 20 kW and 25 kW GeneratorsMaintenance Level 1 Level 2 Lev

Generac®Power Systems, Inc. 21Section 6 — Scheduled MaintenanceGuardian Liquid-cooled 15 kW, 20 kW and 25 kW GeneratorsMaintenance Level 1 Level 2 Lev

22 Generac®Power Systems, Inc.Section 7 - Electrical DataGuardian Liquid-cooled 15 kW, 20 kW and 25 kW GeneratorsWiring Diagram — Control Panel (1-Pha

Generac®Power Systems, Inc. 23Section 7 - Electrical DataGuardian Liquid-cooled 15 kW, 20 kW and 25 kW GeneratorsWiring Diagram — Control Panel (1-Pha

24 Generac®Power Systems, Inc.Section 7 - Electrical DataGuardian Liquid-cooled 15 kW, 20 kW and 25 kW GeneratorsElectrical Schematic — Control Panel

Section 7 - Electrical DataGuardian Liquid-cooled 15 kW, 20 kW and 25 kW GeneratorsWiring Diagram — 1.5L Gas Engine — Drawing No. 0A7176-AGenerac®Powe

26 Generac®Power Systems, Inc.Section 7 - Electrical DataGuardian Liquid-cooled 15 kW, 20 kW and 25 kW GeneratorsElectrical Schematic — 1.5L Gas Engin

Generac®Power Systems, Inc. 27ITEM PART NO. QTY. DESCRIPTION1 97575 2 BRACE, SIDE2 A3769 2 DOOR, ENCLOSURE3 A3768 1 DOOR, ENCLOSURE4 A5314 1 TOP, ENCL

Table of ContentsGuardian Liquid-cooled 15 kW, 20 kW and 25 kW GeneratorsGenerac®Power Systems, Inc. 1INTRODUCTION ...

28 Generac®Power Systems, Inc.Section 8 - Exploded Views and PartsGuardian Liquid-cooled 15 kW, 20 kW and 25 kW GeneratorsExploded View – Enclosure (2

Generac®Power Systems, Inc. 29ITEM PART NO. QTY. DESCRIPTION1 0A2110 32 SCREW SWAGE 1/4-20 X 1/2 Z/YC2 0A2115 32 WASHER NYLON .2503 0A3133A 4 HINGE SL

30 Generac®Power Systems, Inc.Section 8 - Exploded Views and PartsGuardian Liquid-cooled 15 kW, 20 kW and 25 kW GeneratorsExploded View – Control Pane

Generac®Power Systems, Inc. 31ITEM PART NO.QTY. DESCRIPTION1 098062 1 SUPPORT, CONTROL PANEL, L.H.2 075589 1 BRACKET, VOLTAGE REGULATOR3 0A1775 1 CONT

32 Generac®Power Systems, Inc.Section 8 - Exploded Views and PartsGuardian Liquid-cooled 15 kW, 20 kW and 25 kW GeneratorsExploded View – Control Pane

ITEM PART NO.QTY. DESCRIPTION1 0C5077 1 SUPPORT, CONTROL PANEL L.H.2 075589 1 BRACKET, VOLTAGE REGULATOR3 0A1775 1 CONTRLPANEL-BACK4 0C5078 1 SUPPORT

34 Generac®Power Systems, Inc.To water inlet tube(Midway up engine block)To engine bypass"A"To base ofwater inlettube (On block)241230312941

Generac®Power Systems, Inc. 35ITEM PART NO. QTY. DESCRIPTION1 0A6272 1 SUPPORT RADIATOR2 0A5734 1 RADIATOR 1.5L3 0A6237 1 VENTURI 1.5L MODINE4 0A6238

36 Generac®Power Systems, Inc.Section 8 - Exploded Views and PartsGuardian Liquid-cooled 15 kW, 20 kW and 25 kW GeneratorsExploded View – Radiator (25

Generac®Power Systems, Inc. 37ITEM PART NO. QTY. DESCRIPTION2 0A5734 1 RADIATOR 1.5L3 0A6237 1 VENTURI 1.5L4 0A6238 1 GUARD FAN5 084918 1 HEATER 500W

2 Generac®Power Systems, Inc.Study these SAFETY RULES carefully before installing,operating or servicing this equipment. Become familiarwith this Owne

ITEM PART NO. QTY. DESCRIPTION1 C2632 1 BASE, MOUNTING3 70936 2 ISOLATOR-VIBRATION4 70936C 2 ISOLATOR, VIBRATION5 39253 8 CAPSCREW, HEX HEAD-M8-1.25 x

Generac®Power Systems, Inc. 39Section 8 - Exploded Views and PartsGuardian Liquid-cooled 15 kW, 20 kW and 25 kW GeneratorsExploded View – Mounting Bas

ITEM PART NO. QTY. DESCRIPTION1 020689 1 MUFFLER W/RAIN SHLD2 060366 1 MUFFLR STRAP 6IN DIA3 059933 1 ELBOW 90 DEG 2 NPT4 080761 1 NIPPLE TOE 2 NPT X

Generac®Power Systems, Inc. 41ITEM PART NO. QTY. DESCRIPTION1 0A4355 1 MANIFOLD EXHAUST 1.5L2 0C1636 1 NIPPLE TOE 1.5 NPT X 6.5 BL IRON3 036434 4 BOLT

ITEM PART NO. QTY. DESCRIPTION1 0A2106 1 SILKSCREEN "P" PANEL2 0A2952 1 COVER BQ CIRCUIT BREAKER3 039782 1 BRACKET MOUNTING CIRCUIT BREAKER4

Generac®Power Systems, Inc. 43ITEM PART NO. QTY. DESCRIPTION1 074100 1 ASSY HOME STDBY LOGIC(MODELS 921, 863, 865)076009A 1 PP LOGIC ASM 50/60HZ(MODEL

44 Generac®Power Systems, Inc.Section 8 - Exploded Views and PartsGuardian Liquid-cooled 15 kW, 20 kW and 25 kW GeneratorsExploded View – Battery — Dr

Generac®Power Systems, Inc. 45Section 8 - Exploded Views and PartsGuardian Liquid-cooled 15 kW, 20 kW and 25 kW GeneratorsExploded View – Governor Ass

46 Generac®Power Systems, Inc.Section 8 - Exploded Views and PartsGuardian Liquid-cooled 15 kW, 20 kW and 25 kW GeneratorsExploded View – Generator —

Generac®Power Systems, Inc. 47ITEM PART NO. QTY. DESCRIPTION1 098671 1 ASSY ROTOR 10KW098681 1 ASSY ROTOR 15KW098675 1 ASSY ROTOR 20KW098936 1 ASSY RO

Generac®Power Systems, Inc. 3• Inspect the generator regularly, and promptly repairor replace all worn, damaged or defective parts usingonly factory-a

48 Generac®Power Systems, Inc.Section 8 - Exploded Views and PartsGuardian Liquid-cooled 15 kW, 20 kW and 25 kW GeneratorsExploded View – Gaseous Fuel

Generac®Power Systems, Inc. 49ITEM PART NO. QTY. DESCRIPTION1 0C2632 1 WELDMENT MOUNTING BASE2 075580 2 FLANGE FUEL INLET3 026915 3 NIPPLE CLOSE 3/4 X

50 Generac®Power Systems, Inc.Section 8 - Exploded Views and PartsGuardian Liquid-cooled 15 kW, 20 kW and 25 kW GeneratorsExploded View – Engine Compa

Generac®Power Systems, Inc. 51ITEM PART NO. QTY. DESCRIPTION1 0A4531 1 ENGINE-1.5L2 035685 1 CLAMP HOSE #28 1.32 - 2.253 075546A 1 PIPE-FLEX EXHAUST4

52 Generac®Power Systems, Inc.Section 9 — InstallationGuardian Liquid-cooled 15 kW, 20 kW and 25 kW GeneratorsInstallation Drawing 15 & 20 kW – Dr

Generac®Power Systems, Inc. 53Section 9 — InstallationGuardian Liquid-cooled 15 kW, 20 kW and 25 kW GeneratorsInstallation Drawing 15 & 20 kW – Dr

54 Generac®Power Systems, Inc.Section 9 — InstallationGuardian Liquid-cooled 15 kW, 20 kW and 25 kW GeneratorsInstallation Drawing 25 kW – Drawing No.

Generac®Power Systems, Inc. 55Section 9 — InstallationGuardian Liquid-cooled 15 kW, 20 kW and 25 kW GeneratorsInstallation Drawing 25 kW – Drawing No.

56 Generac®Power Systems, Inc.CALIFORNIA EMISSION CONTROL WARRANTY STATEMENTYOUR WARRANTY RIGHTS AND OBLIGATIONSThe California Air Resources Board (CA

Generac®Power Systems, Inc. 57EMISSION CONTROL SYSTEM WARRANTYEmission Control System Warranty (ECS Warranty) for 1995 and later model year engines:(a

4 Generac®Power Systems, Inc.GENERATORThis equipment is a liquid-cooled, engine-driven gener-ator set. The generator is designed to supply electricalp

Part No. 0D6444 Revision 0 (11/14/01) Printed in U.S.A.Section 10 – WarrantyGuardian Liquid-cooled 15 kW, 20 kW and 25 kW GeneratorsGENERAC POWER SYST

Generac®Power Systems, Inc. 5Gaseous fuels such as natural and LP (propane)gas are highly explosive. Even the slightestspark can ignite such fuels and

6 Generac®Power Systems, Inc.Figure 1.6 - Low Coolant Level SensorOVERSPEED SHUTDOWNThe CMA circuit board on liquid cooled units receivesAC frequency

ENGINE SPECIFICATIONSMake .....................MitsubishiDisplacement ......