Instruction/ maintenance manual of the product 004988-2 Generac Power Systems
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Owner’ s Man ual ONL Y QUALIFIED ELECTRICIANS OR CONTRACTORS SHOULD A TTEMPT INST ALLA TION!! This manual should remain with the unit. Liquid-cooled, Prepac kaged Standb y Generator s Model Number: .
Generac ® Pow er Systems, Inc. I NTRODUCTION Thank you for purchasing this model of the standby generator set product line by Generac P ower Systems. Every effort was expended to make sure that the information and instructions in this manual are both accurate and current at the time the manual was writ- ten.
T able of Contents Guardian Liquid-cooled 2 7 kW and 30 kW Generators Generac ® Pow er Systems, Inc. 1 INTRODUCTION ................................................ IFC SAFETY RULES .................................................... 2 Section 1 — GENERAL INFORMA TION .
2 Generac ® Pow er Systems, Inc. Study these SAFETY RULES carefully before installing, operating or servicing this equipment. Become familiar with this Owner’s Manual and with the unit. The genera- tor can operate safely , efficiently and reliably only if it is properly installed, operated and maintained.
Generac ® Pow er Systems, Inc. 3 • Inspect the generator regularly , and promptly repair or replace all worn, damaged or defective parts using only factory-approved parts. • Before performing any maintenance on the generator , disconnect its battery cables to prevent accidental start -up.
4 Generac ® Pow er Systems, Inc. 1.1 GEN ER A T OR This equipment is a liquid- cooled, engine - driven gen- erator set. The generator is designed to supply elec- trical power that operates critical electrical loads during utility power failure.
Generac ® Pow er Systems, Inc. 5 1.6 GEN ER A T OR F U EL SY S TEM The unit has been factory tested and adjusted using a natural gas fuel system. If propane (LP) gas is neces- sary , contact an authorized service dealer . F uel pressure for a natural gas set up should be five inches to 14 inches of water column (0.
6 Generac ® Pow er Systems, Inc. Figure 1.6 - Low Coolant Level Sensor 1.7 .4 O VERSPEED SH UTDOWN The engine control board receives AC frequency sig- nals from an engine run winding in the alternator . Should AC frequency exceed about 72 Hertz for three seconds or 75 Hertz instantaniously , the engine shuts down and the overspeed LED turns on.
1.1 0 SP ECIF ICA TIONS 1.1 0.1 GEN ER A T OR SP ECIF ICA TIONS 1.1 0.2 ENGI N E SP E CI F ICA TIONS Make ........................................................................................................Ford Displacement .......................
8 Generac ® Pow er Systems, Inc. 1.1 3 T ORQU E SP ECIF ICA TIONS Cylinder Head ............................................15 (+ 90° + 90°) ft.lb . Intake Manif old ................................................................13 ft.lb. Exhaust Manif old.
Generac ® Pow er Systems, Inc. 9 • NFP A No. 37, ST A TIONARY COMBUSTION ENGINES AND GAS TURBINES. • NFP A No. 76A , ESSENTIAL ELECTRICAL SYS- TEMS FOR HEAL TH CARE F ACILITIES. • NFP A No. 220, ST AND ARD TYPES OF BUILDING CONSTRUCTION • NFP A No.
10 Generac ® Pow er Systems, Inc. 2.5 EM ERGENCY CI RCU IT IS OL A TION M E THOD This prevents overloading the generator by keeping electrical loads below the wattage/amperage capacity of the generator .
Generac ® Pow er Systems, Inc. 11 Control system interconnections consist of N1 and N2, and leads 23 and 194. Control system intercon- nection leads must be run in a conduit that is sepa- rate from the AC power lead. Recommended wire gauge sizes for this wiring depends on the length of the wire, as recommended below: 2.
12 Generac ® Pow er Systems, Inc. 2.1 1.1 P R IOR T O I N ITIAL S T ART -U P Prior to initially starting the generator , it must be properly pr epared for use. Any attempt to crank or start the engine before it has been properly serviced with the r ecommended types and quantities of engine fluids (oil, coolant, fuel, etc.
Generac ® Pow er Systems, Inc. 13 AUTO — The control board will monitor the two-wire start circuit. When a two -wire start is issued the con- trol board will immediately start and run the genera- tor . Whe the two -wire start is removed the control board will immediately stop the generator .
14 Generac ® Pow er Systems, Inc. 3.3 MAN U AL TR ANSF ER AN D S T ART -U P T o transfer electrical loads to the Standby (EMER- GENCY) power source side and start the engine man- ually , refer to the Owner’s Manual of the particular transfer switch.
Generac ® Pow er Systems, Inc. 15 2. Press and hold the “Set Exercise” switch for three seconds, then release. At this time all five red LEDs will flash for approxi- mately 10 seconds, then the engine will start and run for it ’s 12 minute exercise period, then shut down.
16 Generac ® Pow er Systems, Inc. 4.4 CH E CKI NG F L U I D LEVEL S 4.4.1 CH E CK ENGI NE OI L Check engine crankcase oil level (Figure 4.1) at least every 20 hours of operation, or prior to use. • Remove oil dipstick and wipe dry with a clean, lint -free cloth.
Generac ® Pow er Systems, Inc. 17 Do not attempt to adjust the governor . Only qualified service facilities should adjust the governor . Excessively high operating speeds are dangerous and incr ease the risk of personal injury . Low speeds impose a heavy load on the engine when adequate engine power is not available and may shorten engine life.
18 Generac ® Pow er Systems, Inc. Figure 4.4 – Setting the Spark Plug Gap 4.5.1 3 COOLANT CHANGE Every year , have Authorized Service F acility drain, flush and refill the cooling system. See SPECIFICA- TIONS (Section 1.10) for cooling system recommen- dations.
Generac ® Pow er Systems, Inc. 19 Do not use any jumper cables or booster bat- tery to crank and start the generator engine. If the battery has completely discharged, remove it from the generator for r echarging. Be sure the AUTO/OFF/MANUAL switch is set to the OFF position before connecting the battery cables.
20 Generac ® Pow er Systems, Inc. Section 4 — Maintenance Guardian Liquid-cooled 2 7 kW and 30 kW Generators 4.7 S CH EDU LED MAI NTENANCE F ollowing is a recommended maintenance schedule for Generac small standby and residential generator sets.
Generac ® Pow er Systems, Inc. 21 Section 4 — Maintenance Guardian Liquid-cooled 2 7 kW and 30 kW Generators Maintenance Level 1 Level 2 Le vel 3 Level 4 T asks Recom- T ask Required T ask Required T ask T ask mended Comp . to be done Comp. to be done Comp .
22 Generac ® Pow er Systems, Inc. Section 4 — Maintenance Guardian Liquid-cooled 2 7 kW and 30 kW Generators Maintenance Level 1 Level 2 Le vel 3 Level 4 T asks Recom- T ask Required T ask Required T ask T ask mended Comp. to be done Comp. to be done Comp .
Generac ® Pow er Systems, Inc. 23 Section 5 — T roubleshooting Guardian Liquid-cooled 2 7 kW and 30 kW Generators TROU B LE SHOO TI NG POI NTS P ROBLEM CAUSE CORR E CTION Engine won’t crank. 1. 15 amp fuse b lown. 1. Replace fuse. 2. Loose or corroded or def ective 2.
24 Generac ® Pow er Systems, Inc. Section 6 - Notes Guardian Liquid-cooled 2 7 kW and 30 kW Generators.
Generac ® Pow er Systems, Inc. 25 Section 7 — Installation Diagram Guardian Liquid-cooled 2 7 kW and 30 kW Generators Installation Diagram — Drawing No.
BRUSH ASSEMLY ( GENERATOR ) A U T O MATI C V O LTA G E RE GU LAT OR BULKHEAD CONNECTOR 1 ( ENGINE ) CIRCUIT BREAKER ( EXCITATION ) FUSE, BAT. POWER ( 15A AGC TYPE ) CIRCUIT BREAKER ( OUTPUT ) DIODE [ .
Generac ® Pow er Systems, Inc. 27 LEGEND [ CONT. ]: J -2 - L OS - S M - J B - WL S - H C T - J -1 - IM - I C - ELE C . GO VERN O R A C T U AT OR GROUND ( SENSING/LOW AMP ) GROUND ( POWER/HIGH AMP ) D. C . C HAR G E ALTERNAT OR S TARTER CO NTA C T OR CONNECTOR 1 ( ENGINE ) DRIVER ELE C .
28 Generac ® Pow er Systems, Inc. Section 8 - Electrical Data Guardian Liquid-cooled 2 7 kW and 30 kW Generators Electrical Schematic — Engine — Drawing No.
Generac ® Pow er Systems, Inc. 29 Section 8 - Electrical Data Guardian Liquid-cooled 2 7 kW and 30 kW Generators Electrical Schematic — Engine — Drawing No. 0E6200-B SC - I C - IM - L OS - S M - WL S - LEGEND [ CONT. ]: CONNECTOR (C1) SWITCH , HIGH COOLANT TEM P C RANKIN G CO NTA C T OR D.
CONTACTOR WIRE H ARNE SS 7 5 6 16 E N G INE FOO T 2 4 3 41 40 16 7 6 5 35 9 13 17 12 8 18 16 43 BLOCK E N G INE 30 TO 44 35 3 4 3 36 33 44 42 22 20 3 2 38 18 31 20 TO S TARTER S TARTER BO LT TO B L OC K E N G INE 18 TO 11 1 12 10 14 R EAR BEARIN G 13 15 3 7 14 C ARRIER 3 4 16 2 30 Generac ® Pow er Systems, Inc.
ITEM P ART NO . QTY . DESCRIPTION 1 0E5822 1 BASEFRAME, WELDMENT 3.0L FORD 2 052860 4 NUT FLANGED HEX M12-1.75 3 052251 4 DAMPENER VIBRA TION 40 BLUE 4 052257 4 SP ACER .49 X .62 X 1.87 PWDR/ZNC 5 052252 4 DAMPENER VIBRA TION 6 052259 4 W ASHER FLA T M12 7 052891 4 SCREW HHC M12-1.
32 Generac ® Pow er Systems, Inc. S TATE S F O AM I S O N FAR S IDE 3 7 1 7 L AT C H DETAIL 30 3 1 3 4 38 2 3 2 3 4 27 43 18 41 4 "B " 7 D ETAIL S EE LAT C H 11 25 5 2 9 6 53 5 4 5 S E CU RE A S S H O WN.
Generac ® Pow er Systems, Inc. 33 ITEM P ART NO . QTY . DESCRIPTION 1 0E8411 1 INT AKE DUCT HSB 2 0E8042 1 DUCT DISCHARGE RH FRONT 3 0E8041 1 DUCT DISCHARGE LH FRONT 4 0C2454 62 SCREW TH-FRM M6-1 X 1.
34 Generac ® Pow er Systems, Inc. Section 9 - Exploded Views and P arts Guardian Liquid-cooled 2 7 kW and 30 kW Generators Control Panel — Drawing No.
Generac ® Pow er Systems, Inc. 35 ITEM P ART NO . QTY . DESCRIPTION 1 0E7195 1 CONTROL BO X HSB 2 0E7196 1 CO VER FR ONT P ANEL HSB 3 0E7197 1 CO VER TOP P ANEL HSB 4 0E7193 1 DECAL W ARNINGS HSB 5 0.
38 11 85 6 17 57 24 61 60 30 66 68 2 5 58 35 39 36 WIRE GROUND 39 32 64 63 65 31 35 2 42 51 24 55 2 5 60 86 58 57 16 1 8 1 9 4 8 4 8 42 41 44 4 5 30 81 42 7 8 4 9 49 4 6 47 47 4 4 3 42 1 2 6 42 47 81 .
ITEM P ART NO . QTY . DESCRIPTION 1 0E6202 1 ENGINE 3.0L FORD (RD) (MAKE) 2 0E8824 2 ST AMPING ENG FOO T 3.0L FORD 3 0E8963 1 PULLEY CRANKSHAFT 3.0L FORD RD 4 0E9020 1 BRA CKET DC AL T 3.0L FORD 5 0A1232 1 D .C. AL TERNA T OR ASSY 6 0A7801B 1 PULLEY POL Y -V 82 OD .
E N G INE 5 "A " 12 FRAME 10 9 11 8 9 3 21 27 PU MP TO WATER 4 12 17 6 15 7 1 15 20 3 22 24 24 TO 2 12 TO "A" 18 13 14 12 Section 9 - Exploded Views and P arts Guardian Liquid-cooled 2 7 kW and 30 kW Generators Radiator — Drawing No.
ITEM P ART NO . QTY . DESCRIPTION 1 0E9947 1 RADIA T OR R-IN,L-OUT 658X489X49 2 0E6340 1 VENTURI 3.0L FORD HSB 3 0E8531 2 SIDE SUPPORT RADIA T OR HSB 4 0E6398 1 TUBE LOWER RAD 3.0L FORD HSB 5 0E6397 1 HOSE UPPER RAD 3.0LFORD HSB 6 080713 1 BRACKET COOLANT T ANK 7 076749 1 T ANK COOLANT RECO VER Y 8 049814 4 SCREW HHC M10-1.
40 Generac ® Pow er Systems, Inc. 28 "B " 3 1 10 16 4 2 17 5 9 1 7 6 29 3 2 30 11 29 15 8 3 6 3 33 29 14 TO "B" 26 2 7 18 43 41 40 21 28 26 39 Section 9 - Exploded Views and P arts Guardian Liquid-cooled 2 7 kW and 30 kW Generators Fuel Syst em — Drawing No.
Generac ® Pow er Systems, Inc. 41 ITEM P ART NO . QTY . DESCRIPTION 1 * --------- 1 WELDMENT MOUNTING BASE 2 075580 1 FLANGE FUEL INLET 3 0E7691 1 ASSY REGULA T OR 3.0L NG OR LPV 4 039253 2 SCREW HHC M8-1.25 X 20 G8.8 5 022145 2 W ASHER FLA T 5/16 ZINC 6 022129 4 W ASHER LOCK M8-5/16 7 045771 2 NUT HEX M8-1.
42 Generac ® Pow er Systems, Inc. 3 LOC KTI G HT LOC KTI G HT 7 1 5 17 8 7 6 18 4 16 L EAD S 5 2 9 13 21 19 20 14 10 11 1 2 30 1 3 1 Section 9 - Exploded Views and P arts Guardian Liquid-cooled 2 7 kW and 30 kW Generators Alternator — Drawing No.
Generac ® Pow er Systems, Inc. 43 ITEM P ART NO . QTY . DESCRIPTION 1 0F1659A 1 RO T OR 390 15KW 1P DIRECT HSB (2.5L FORD) 0F1657A 1 RO T OR 390 20KW 1P DIRECT HSB (2.
ITEM P ART NO . QTY . DESCRIPTION 1 0E6134 1 MUFFLER, 3.0L FORD 2 0E6464 2 EXHA UST ELBO W 3.0L FORD HSB 3 0E6465 1 EXHA UST PIPE LH 3.0L FORD HSB 4 0E6465A 1 EXHA UST PIPE RH 3.0L FORD HSB 5 0E5914 1 BRA CKET MUFFLER 3.0L FORD HSB 6 060366 1 MUFFLR STRAP 6IN DIA 7 027837 1 SCREW RHM 1/4-20 X 2-1/4 8 036797 4 BOL T U 5/16-18 X 2.
Generac ® Pow er Systems, Inc. 45 ITEM P ART NO . QTY . DESCRIPTION 1 0E5193 1 PLA TE AIR CLEANER AD APTER 2 0E8200 1 TUBE AIR INT AKE 3.0L FORD 3 0E8201 1 BRA CKET AIR INT AKE 3.
Part No. 0F5095 Revision B (05/05/05) Printed in U.S.A. Section 1 0 – W arranty Guardian Liquid-cooled 2 7 kW and 30 kW Generators GENERA C PO WER SYSTEMS "TWO YEAR" LIMITED W ARRANTY FOR .
An important point after buying a device Generac Power Systems 004988-2 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Generac Power Systems 004988-2 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Generac Power Systems 004988-2 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Generac Power Systems 004988-2 you will learn all the available features of the product, as well as information on its operation. The information that you get Generac Power Systems 004988-2 will certainly help you make a decision on the purchase.
If you already are a holder of Generac Power Systems 004988-2, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Generac Power Systems 004988-2.
However, one of the most important roles played by the user manual is to help in solving problems with Generac Power Systems 004988-2. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Generac Power Systems 004988-2 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
