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Generac Power Systems 37kW NG - page 1
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 Generators Model No: 005012-0 37kW NG, 40kW LP ...
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Generac Power Systems 37kW NG - page 2
Generac ® Pow er Systems, Inc. I NTRODUCTION Thank you for purchasing this model of the QuietSource 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. However , the manufacturer ...
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Generac Power Systems 37kW NG - page 3
T able of Contents QUIET SOURCE ™ 40kW Liquid-cooled Generators Generac ® Pow er Systems, Inc. 1 INTRODUCTION ................................................ IFC Read this Manual Thoroughly ......................................IFC Operation and Maintenance ........................................IFC How to Obtain Service ...................... ...
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Generac Power Systems 37kW NG - page 4
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. Many acci- dents are caused by failing t ...
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Generac Power Systems 37kW NG - page 5
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. Disconnect the cable from the battery post indicated by ...
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Generac Power Systems 37kW NG - page 6
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. The unit has been facto- ry-installed in a weather resistant, all metal enclosure and is intended for ou ...
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Generac Power Systems 37kW NG - page 7
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 , refer to Section 1.12 for conversion instructions. F uel pressure for a natural gas set up should be five inches to 14 inches of water column (0.18 to 0.5 psi) at all ...
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Generac Power Systems 37kW NG - page 8
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 instantaneously , the engine shuts down and the overspeed LED turns on. Sh ...
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Generac Power Systems 37kW NG - page 9
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 ................................................................................Chrysler Displacement ..................................................................3.9 liters Cylinder Arrangement ............................................ ...
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Generac Power Systems 37kW NG - page 10
8 Generac ® Pow er Systems, Inc. NOTE: P ort 1 is for NG only and P ort 2 is for LP vapor only . No provision for dual fuel has been made. Serious injury or damage may occur if not con- figured pr operly . Please consult an authorized Generac Service Dealer with any questions. 1.1 3 T ORQU E SP ECIF ICA TIONS Tighten the bolts from the middle out, ...
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Generac Power Systems 37kW NG - page 11
Generac ® Pow er Systems, Inc. 9 Only qualified, competent installation contractors or electricians thoroughly familiar with applicable codes, standards and regulations should install this standby electric power system. The installation must comply strictly with all codes, standards and regula- tions pertaining to the installation. After the syste ...
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Generac Power Systems 37kW NG - page 12
10 Generac ® Pow er Systems, Inc. Figure 2.1 – Basic Standby Electric System 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 . If the generator is powering only crit- ical loads, within the wattage/amperage capacity , dur- ing ...
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Generac Power Systems 37kW NG - page 13
Generac ® Pow er Systems, Inc. 11 Setting switch two to OFF allows the control PCB to perform the A TS control functions. 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 ...
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Generac Power Systems 37kW NG - page 14
12 Generac ® Pow er Systems, Inc. When using maintenance -free batteries, it is not nec- essary to check the specific gravity or electrolyte level. Have these procedures performed at the intervals specified in Section 4, “Maintenance.” A negative ground system is used. Battery connections are shown on the wiring diagrams. Make sure all batter- ...
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Generac Power Systems 37kW NG - page 15
Generac ® Pow er Systems, Inc. 13 • The control board WILL monitor all engine condi- tions and shut down on all the faults listed in this document. Pos2 OFF — Prepackaged A TS Application • The control board will perform all of the automat- ic features listed in this document. • The two -wire start connections should NOT be used. GT S Mode ...
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Generac Power Systems 37kW NG - page 16
14 Generac ® Pow er Systems, Inc. 3.2.6 SY S TEM READ Y LED The System Ready LED (green) has two main pro- poses. First, the LED will be ON when the A UTO/OFF/MANU AL switch is in the A UTO position, utility is present, and there are no system alarms. This ON state indicates the system is fully ready for automatic operation. The system ready LED w ...
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Generac Power Systems 37kW NG - page 17
Generac ® Pow er Systems, Inc. 15 On the day , and at the time of day chosen for the gen- erator to exercise, set the weekly exercise cycle as fol- lows: 1. Place the A UTO/OFF/MANU AL switch in the A UTO position. 2. Press and hold the “Set Exercise” switch for three seconds, then release. At this time all five red LEDs will flash for approxi ...
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Generac Power Systems 37kW NG - page 18
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. • Install oil dipstick, then remove again. • Oil should be between FULL and ADD ...
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Generac Power Systems 37kW NG - page 19
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. Co ...
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Generac Power Systems 37kW NG - page 20
18 Generac ® Pow er Systems, Inc. 4.6 M IS CELL AN EOUS MAINTENANCE 4.6.1 CLEAN ING TH E GEN ER A T OR Keep the generator as clean and as dry as possible. Dirt and moisture that accumulates on internal gen- erator windings have an adverse effect on insulation resistance. P eriodically clean generator exterior surfaces. A soft brush may be used to ...
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Generac Power Systems 37kW NG - page 21
Generac ® Pow er Systems, Inc. 19 Section 4 — Maintenance QUIET SOURCE ™ 40kW Liquid-cooled Generators 4.7 S CH EDU LED MAI NTENANCE F ollowing is a recommended maintenance schedule for QuietSource small standby and residential generator sets. The established intervals in the schedule are the maximum recommended when the unit is used in an ave ...
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Generac Power Systems 37kW NG - page 22
20 Generac ® Pow er Systems, Inc. Section 4 — Maintenance QUIET SOURCE ™ 40kW Liquid-cooled Generators Maintenance Level 1 Level 2 Level 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 . Required Comp . to be done (Date- 3 months/ (Date- Semi- (Date- to be done (Date- monthly In ...
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Generac Power Systems 37kW NG - page 23
Generac ® Pow er Systems, Inc. 21 Section 4 — Maintenance QUIET SOURCE ™ 40kW Liquid-cooled Generators Maintenance Level 1 Level 2 Level 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 . Required Comp . to be done (Date- 3 months/ (Date- Semi- (Date- to be done (Date- monthly In ...
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Generac Power Systems 37kW NG - page 24
22 Generac ® Pow er Systems, Inc. Section 5 — T roubleshooting QUIET SOURCE ™ 40kW Liquid-cooled Generators TROU B LE SHOO TI NG POI NTS P ROBLEM CAUSE CORR E CTION Engine won’t crank. 1. 15-amp fuse blown. 1. Replace fuse . 2. Loose or corroded or defectiv e 2. Tighten, clean or replace batter y cables . batter y cables as necessary . 3. De ...
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Generac Power Systems 37kW NG - page 25
Generac ® Pow er Systems, Inc. 23 Section 6 — Installation Diagram QUIET SOURCE ™ 40kW Liquid-cooled Generators Installation Diagram — Drawing No. 0E8 7 9 7 ...
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Generac Power Systems 37kW NG - page 26
24 Generac ® Pow er Systems, Inc. Section 7 - Electrical Data QUIET SOURCE ™ 40kW Liquid-cooled Generators Wiring Diagram — Engine — Drawing No. 0E8 1 1 5-A ...
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Generac Power Systems 37kW NG - page 27
Generac ® Pow er Systems, Inc. 25 Section 7 - Electrical Data QUIET SOURCE ™ 40kW Liquid-cooled Generators Wiring Diagram — Engine — Drawing No. 0E8 1 1 5-A ...
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Generac Power Systems 37kW NG - page 28
26 Generac ® Pow er Systems, Inc. Section 7 - Electrical Data QUIET SOURCE ™ 40kW Liquid-cooled Generators Electrical Schematic — Engine — Drawing No. 0E81 16-A ...
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Generac Power Systems 37kW NG - page 29
Generac ® Pow er Systems, Inc. 27 Section 7 - Electrical Data QUIET SOURCE ™ 40kW Liquid-cooled Generators Electrical Schematic — Engine — Drawing No. 0E81 16-A ...
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Generac Power Systems 37kW NG - page 30
CONTACTOR WIRE H ARNE SS 4 3 35 13 12 9 34 TO MOU NT E N G INE 18 8 6 7 5 16 3 4 43 42 2 36 41 40 16 6 7 5 19 16 30 27 35 3 4 36 33 27 29 22 20 3 2 38 18 31 20 21 TO S TARTER S TARTER BO LT TO E N G INE B L OC K 18 TO 11 1 12 10 1 4 R EAR BEARIN G 15 3 7 13 C ARRIER 3 4 16 2 28 Generac ® Pow er Systems, Inc. Section 8 - Exploded Views and P arts Q ...
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Generac Power Systems 37kW NG - page 31
ITEM P ART NO . QTY . DESCRIPTION 1 0E7331 1 WELDMENT MTG BASE 3.9L CR YSLR 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 M12-1.75 X 80 G8.8 8 0536210214 1 ASSY WIRE 15.0" 9 074906 1 SCREW H ...
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Generac Power Systems 37kW NG - page 32
30 Generac ® Pow er Systems, Inc. S TATE S F O AM I S O N NEAR S IDE S TATE S F O AM I S O N FAR S IDE 3 7 17 L AT C H DETAIL 30 1 3 1 3 4 38 3 2 3 45 18 27 41 4 2 S EE LAT CH 7 DETAIL 25 "B" 5 2 11 9 4 6 53 5 5 4 TO "A" S E CU RE A S S H O WN. R E Q UIRE INSULATION. T YPI C AL O F R OO F PANEL THAT 4 53 35 R ADIAT OR 33 4 46 5 ...
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Generac Power Systems 37kW NG - page 33
Generac ® Pow er Systems, Inc. 31 ITEM P ART NO . QTY . DESCRIPTION 1 0E8418 1 DUCT INT AKE MID AL 2 0E8414 1 DUCT DISCHARGE RH AL 3 0E8413 1 DUCT DISCHARGE LH AL 4 0C2454 62 SCREW TH-FRM M6-1 X 16 N W A Z/JS 5 0E7807 1 BAFFLE REAR BOTT OM 6 0E5902 1 POST CORNER LH REAR HSB AL 7 0E5903 1 POST CORNER RH REAR HSB AL 8 0E8387 1 BAFFLE REAR T OP 9 0E5 ...
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Generac Power Systems 37kW NG - page 34
32 Generac ® Pow er Systems, Inc. Section 8 - Exploded Views and P arts QUIET SOURCE ™ 40kW Liquid-cooled Generators Control Panel — Drawing No. 0E7 11 8-H ...
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Generac Power Systems 37kW NG - page 35
Generac ® Pow er Systems, Inc. 33 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 0E7194 1 DECAL CONTROLS HSB 6 0E4494 1 SWITCH ROC DPDT ON-OFF-ON 7 082573 1 SWITCH R OCKER DPST 125V SPD 8 032300 2 HOLDER FUSE 9 022676 1 FUSE 15A X A ...
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Generac Power Systems 37kW NG - page 36
Section 8 - Exploded Views and P arts QUIET SOURCE ™ 40kW Liquid-cooled Generators Engine — Drawing No. 0E81 21 -G 34 Generac ® Pow er Systems, Inc. ...
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Generac Power Systems 37kW NG - page 37
ITEM P ART NO . QTY . DESCRIPTION 1 0E5048A 1 FLEXPLA TE 3.9L HSB 2 0E7477 1 MA CHINING 3.9L ENGINE AD APT OR 3 0E6703 1 CO VER FL YWHEEL ACCESS 4 0E8336 REF REWORK 3.9L CHR YSLER ENGINE 5 0E7841 2 GASKET THERMOST A T ADAPT OR 6 0E7254 1 MA CH THERM AD APT OR 3.9L CHR Y 7 0E7956 1 BRA CKET IGNITION COIL 8 0E7953 1 COIL IGNITION 3.9L CHR YSLER 9 047 ...
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Generac Power Systems 37kW NG - page 38
17 WATER PUMP 24 23 26 24 25 21 3 "A" 13 1 15 19 22 TO T HERM OS TAT HOUS IN G 10 4 10 20 0 5 16 16 2 14 8 15 7 14 18 6 9 1 7 14 O "A" Section 8 - Exploded Views and P arts QUIET SOURCE ™ 40kW Liquid-cooled Generators Radiator — Drawing No. 0E8 1 02-E 36 Generac ® Pow er Systems, Inc. ...
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Generac Power Systems 37kW NG - page 39
ITEM P ART NO . QTY . DESCRIPTION 1 0D7825A 1 RADIA T OR COPPER BRASS 2 0D7174C 1 VENTURI,3.9L CR YSLR HSB 22"F AN 3 0E7640 1 RADIA TOR SUPPOR T L/H SIDE 4 0E7924 1 HOSE LOWER RADIA T OR 5 0F2853 1 HOSE, RADIA TOR UPPER, 3.9L 6 0D8252 1 F AN GUARD , T OP 7 0D8251 1 F AN GUARD , BO TT OM 8 0E0726 1 BRACKET , W A TER BO TTLE 1.5L MIT 9 076749 1 ...
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Generac Power Systems 37kW NG - page 40
38 Generac ® Pow er Systems, Inc. 46 21 24 23 TO EN G INE 2 16 17 4 5 6 45 42 40 11 41 9 8 12 6 3 15 2 13 27 3 1 14 19 29 30 3 2 "B " TO "B " 13 36 3 7 38 20 19 18 35 3 4 M ANIF O LD INTAKE TO 44 43 25 22 6 1 39 33 Section 8 - Exploded Views and P arts QUIET SOURCE ™ 40kW Liquid-cooled Generators Fuel Syst em — Drawing No. ...
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Generac Power Systems 37kW NG - page 41
Generac ® Pow er Systems, Inc. 39 ITEM P ART NO . QTY . DESCRIPTION 1 033212 4 SCREW HHC 5/16-18 X 1-1/4 G5 2 075580 1 FLANGE FUEL INLET 3 0E8365 1 ASSY REG. 3.9L N/G-LPV 1800RPM 4 039253 2 SCREW HHC M8-1.25 X 20 G8.8 5 022145 2 W ASHER FLA T 5/16 ZINC 6 022129 8 W ASHER LOCK M8-5/16 7 045771 2 NUT HEX M8-1.25 G8 YEL CHR 8 042907 2 SCREW HHC M8-1. ...
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Generac Power Systems 37kW NG - page 42
40 Generac ® Pow er Systems, Inc. 4 15 7 17 8 7 1 18 20 3 1 30 5 21 19 L EAD S 6 2 14 12 24 9 22 * 2 3 13* 3 10 13 11 Section 8 - Exploded Views and P arts QUIET SOURCE ™ 40kW Liquid-cooled Generators Alternator — Drawing No. 0E5 1 46-B ...
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Generac Power Systems 37kW NG - page 43
Generac ® Pow er Systems, Inc. 41 ITEM P ART NO . QTY . DESCRIPTION 1 0E5093A 1 RO T OR 390 30KW 1P DIRECT HSB 0E7413A 1 RO T OR 390 40KW 1P DIRECT HSB 2 0E5094A 1 STR-390--35AD1 HSB (382MM LONG)(3.0LFORD) 0E7412A 1 STR-390--40AD HSB (433MM LONG)(3.9L CHR YSLER) 3 0E5706 1 REAR BEARING CARRIER 390/DRCT 4 0E5048 REF FLEXPLA TE 3.0L FORD 0E5048A REF ...
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Generac Power Systems 37kW NG - page 44
ITEM P ART NO . QTY . DESCRIPTION 1 0E8616 1 MUFFLER 7" X 9" X 21" 2.5" IN & OUT 2 0F1081 1 WYE, PIPE 3.9L CHR YSLER 3 0F1087 1 PIPE R/H SIDE 3.9L CHR YSLER 4 0E8026 1 PIPE L/H EXHA UST MANIFOLD 5 0E5914 1 BRA CKET MUFFLER 30" LG 6 0E8702 1 PIPE MUFFLER INLET 7 0E8727 1 PIPE MUFFLER OUT 8 036797 3 BOL T U 5/16-18 X 2.25 ...
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Generac Power Systems 37kW NG - page 45
Section 9 - Notes QUIET SOURCE ™ 40kW Liquid-cooled Generators Generac ® Pow er Systems, Inc. 43 ...
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Generac Power Systems 37kW NG - page 46
44 Generac ® Pow er Systems, Inc. Section 9 - Notes QUIET SOURCE ™ 40kW Liquid-cooled Generators ...
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Generac Power Systems 37kW NG - page 47
Generac ® Pow er Systems, Inc. 45 Section 9 - Notes QUIET SOURCE ™ 40kW Liquid-cooled Generators ...
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Generac Power Systems 37kW NG - page 48
Part No. 0E9042 Revision E (03/15/05) Printed in U.S.A. Section 1 0 – W arranty QUIET SOURCE ™ 40kW Liquid-cooled Generators GENER AC PO WER SY STEMS "TWO YEAR" LIMITED WARR ANTY FOR QU I E TS OU RCE™ "PR EP A CKAGED EMERGENCY AUT OMA TIC ST ANDBY GENER A T ORS" F or a period of two years from the date of original sale, Ge ...
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