Instruction/ maintenance manual of the product 20kW Generac
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ST ANDBY GENERA T OR O WNER'S MANU AL This manual should remain with the unit. A ne w standar d of reliability Serial Number QT 1.5L 20kW Models — CAUTION — ONL Y QU ALIFIED ELECTRICIANS OR CONTRA CT ORS SHOULD A TTEMPT INST ALLA TION! DEADL Y EXHA UST FUMES.
Standby Generator Sets T able of Contents SECTION P AGE SAFETY RULES ................................................ 1-1 INTRODUCTION ..................................................... 1-3 Read this Manual Thoroughly ..............................
Study these SAFETY RULES carefully before install- ing, operating or servicing this equipment. Become familiar with this Owner’s Manual and with the unit. The generator can operate safely , efficiently and reli- ably only if it is properly installed, operated and maintained.
• Before performing any maintenance on the gen- erator , disconnect its battery cables to prevent accidental start -up. Disconnect the cable from the battery post indicated by a NEGA TIVE, NEG or (–) first. Reconnect that cable last. • Never use the generator or any of its parts as a step.
1-3 I NTRODUCTION Thank you for purchasing this model of the standby generator set product line. Every effort was expended to make sure that the information and instructions in this manual were both accurate and current at the time the manual was written.
I DENTIF ICA TION R E C OR D D A T A LA BE L Every generator set has a DA T A LABEL that contains important information pertinent to the generator . The data label, which can be found attached to the .
E QUIPM ENT DE SCRI PTION This equipment is a revolving field, alternating cur - rent generator set. It is powered by a gaseous fueled engine operating at 1800 rpm for 4-pole direct drive units, 3600 rpm for 2-pole direct drive units and 2300 - 3000 rpm for quiet drive gear units.
ENGI NE P RO TE CTIVE DEVICE S The standby generator may be required to operate for long periods of time without an operator on hand to monitor such engine conditions as coolant tempera- ture, oil pressure or rpm.
F U E L SYST E M FUE L RE QUIRE MEN T S The standby generator may be equipped with one of the following fuel systems: • Natural gas fuel system • Propane vapor (PV) fuel system The Manual Drawing .
SP E CIF ICA TIONS GEN ERA T OR T ype ............................................................................. Synchronous Rotor Insulation .................................................................... Class F Stator Insulation ...........
COLD WEA THER KIT F or cold climates, optional cold weather kit (part number 0F6148) is recommended. The kit includes: • Battery W armer • 4” Junction Box with hardware • 6 qt. pack 5W -30 synthetic oil (engine) R E C ONF IGU RI NG TH E FU EL SY S TEM NOTE: All models are configured for natural gas or LP vapor from the factory .
GEN ERA T OR A C LEAD C ON NECTIONS See “V oltage Codes”. This generator may be rated at any one of three voltages, either single -phase or three -phase. The electrical wires in the unit ’s A C con- nection (lower) panel should be installed according to the number of leads and the voltage/phase required for the application.
I NS T ALLA TION Refer to the separate “Installation Guide QT Product Line” supplied with the unit. P REP AR A TION BEFOR E ST ART -UP The instructions in this section assume that the standby generator has been properly installed, ser - viced, tested, adjusted and otherwise prepared for use by a competent, qualified installation contractor .
S T ART -U P CH E CKLIS T Before working on the generator , ensure the fol- lowing: • The AUTO/OFF/MANU AL switch is in the OFF position. • The 120V AC supply to the battery charger is switched OFF . P REP AR A TION FOR ST ART -UP • Ensure that the 120V AC circuit breaker to the bat - tery charger is open.
GEN ERA T OR C ONTROL AN D OP ERA TION Refer to the appropriate control panel operator’s manual for this unit. OP ERA TI NG U N IT WITH MAN U AL TR ANSFER SWIT CH If the generator was installed in conjunction with a transfer switch capable of manual operation only , the following procedure applies.
MAI NTENANCE PER FOR M ED B Y AUTHOR IZED SERVICE F ACILITI ES Before working on the generator , ensure the fol- lowing: • The AUTO/OFF/MANU AL switch is in the OFF position. • The 15A fuse has been removed from the con- trol box. • The 120V AC supply to the battery charger is switched OFF .
Figure 10.1 - Oil Dipstick and Oil Fill Cap OIL FILL CAP OIL DIPSTIC K B A TTE R Y FL UID Check battery electrolyte fluid based on the Maintenance Schedule. Fluid should cover separa- tors in all battery cells. If fluid level is low , add dis - tilled water to cover tops of separators.
CHANGI NG ENGIN E OIL Refer to maintenance performed by authorized service facilities for engine oil and filter change frequencies. Drain the oil while the engine is still warm from run- ning . This means warm up the engine, shut it down and drain immediately as follows: 1.
M IS CELLAN EOUS MAINTENANCE CLEAN ING TH E GENER 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.
SERVICE S CH EDULE The following is a recommended maintenance schedule for small standby and residential generator sets. The established intervals in the schedule are the maximum recommended when the unit is used in an average service application.
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 Initials) Break-in Initials) annually Initials) Annually Initials) 1.
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 Initials) Break-in Initials) annually Initials) Annually Initials) 13.
TROU BLESHOO TI NG GU IDE P ROBLEM CAUSE C OR RECTION 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 cab les. battery cables as necessary . 3. Defectiv e star ter contactor .
Standby Generator Sets Notes.
Standby Generator Sets Notes.
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1 0F71 35 1 BREA KER TR AY BA CK/BO TTOM 2 0F70 22 1 SUPP ORT CO NTROL P ANEL SIDE R H 3 0F70 21 1 SUPP ORT CO NTROL P ANEL SIDE L H 4 0F7260 1 COVE R CI RC UIT BREA KE R 2P 0F71 36 1 COVER CI RC UIT .
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1 098675 1 ASS Y R OTOR 20K W 2 0A5336A 1 HOUSING BLOWER 3 0A16 59 1 SCRE EN AIR O UTLE T 4 020746 4 SCR EW PPHM M5 -0 .8 X 8 ZINC 5 04922 6 4 WAS HER LO CK M 5 6 05171 3 4 WAS HER F LAT M 5 7 02212 9.
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1 0F34 08B 1 BATTE RY T RAY C 1 CPL 2 0F3 4 11 1 S TRAP BA TT E RY RET A INM E NT 3 02550 7 REF WASHE R SHAK EPROO F EXT 7/16 S TL 4 05264 7 RE F S CREW S HC M 10-1.
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1 0F715 5 1 MOUNTIN G BASE 1.5L C1 CPL 2 02748 2 2 WAS HER S HAKEP ROOF EXT 5/16 S TL 3 07093 6 2 DAM PENE R VIBR ATION 4 07093 6C 2 V IB. I SO . 7 0-75 DU RO 5 03925 3 8 S CRE W HH C M 8- 1. 2 5 X 20 G8. 8 6 02214 5 12 WASHE R FL AT 5/ 16 ZINC 7 022129 12 WASH ER LOCK M8 -5/1 6 8 045771 4 NU T HEX M8-1 .
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1 0F7 211 1 SUPPO RT R ADIATOR LH SI DE 2 0F7 2 09 1 V E NTU RI 15" DI A FAN 3 0F7 210 1 SUPPO RT RADI ATOR RH SI DE 4 0E 9837A 1 RADIA TOR 2 .5L CPL 5 0E 1936 1 FAN CO OLI NG 15" 6 02 2129 1 WASHE R LOCK M8- 5/16 7 0F7 166 1 RADIA TOR HOSE LWR 1.
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1 0 98290 1 ASM MOTOR ST EPPER 2 098 941 A 1 HO USIN G GO VERN OR CONN ECT OR 3 098958A 1 CONNECTOR INTERFAC E ASSEMBLY 4 098942A 1 COVER CONNECTOR HOUSING 5 0 98225 2 SCREW FHM #2 X 5/8 SELF TAP 6 0 43146 3 SCREW HHC M6-1.
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1 0A4531 REF E NGINE-1.5L 2 022473 2 WASH ER F LA T 1/4 ZINC 3 * 055934 C 1 CLA MP VIN YL .5 X .406 Z 4 0A45 310 258 RE F. GASKET -EX HAUS T MA NIFOL D 5 0 A4355 1 MANIFOLD -EXHAUST 6 0E2632 1 HEAT SHIELD EXH 1.5L 7 022097 4 WASH ER LOCK M6-1/4 8 02250 7 2 SCRE W HH C 1/4- 2 0 X 1/ 2 G5 9 052212 4 SCR EW HHC M10-1.
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1 026812 2 ELBOW 90 D 3/4 NPT 2 075580 1 FLANGE FUEL IN L E T 3 0F 6 3 64A 1 FUEL RGL T R 1. 5L REW O RK 4 0392 53 4 SCREW HHC M 8-1.2 5 X 20 G8.8 5 0221 45 2 WASHE R FLAT 5/16 ZI NC 6 0221 29 6 WASHE R LOCK M8-5/ 16 7 045771 2 NUT HEX M8 -1.
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1 0F700 3 (XX) 1 ROOF C1 CP L 2 0F700 4 (XX) 1 CORNER POS T LH SI DE C1 CPL 3 0F700 8 (XX) 1 DOOR RE AR C 1 CP L 4 0F700 5 (XX) 1 CORNER POS T RH S IDE C 1 CPL 5 0F700 7 (XX) 2 DOOR L H & R H SI DE C1 CPL 6 0F700 6 (XX) 1 DUCT F RONT DISCHA RGE C1 CPL 7 0C26 34A 1 ASSE MBLY CO VER AC CESS 8 091297 0091 1 ASSY WIRE 14AW G 13.
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1 0F7366 1 MUFFLER C1 2 0F7647 1 MUFFLER SADDLE 3 0F809 5 1 PIPE EXHAUST OUTL ET 4 0F7538 1 PIPE EXH INLET M UFLR SIDE 1.5L 5 0E 3257 4 S CREW HW HTF M6- 1.0 X 1 6 6 0F7644 2 MUFFLER STRAP 7 0C 611 9 1 BOLT U 5/16- 18 X 2-1 /4 8 03643 4 3 BO LT U 5/16-1 8 X 2.
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Standby Generator Sets W arranty Printed in U.S.A. GENERA C PO WER SYSTEMS ST ANDARD LIMITED W ARRANTY FOR HOME ST ANDBY/LIGHT COMMERCIAL PRODUCT 45kW AND BELO W For a period of two (2) y ears from the date of sale, or start-up by A uthorized/Cer tified Generac P ower Systems Dealer , or branch thereof , Generac P ow er Systems, Inc.
An important point after buying a device Generac 20kW (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 20kW 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 20kW - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Generac 20kW you will learn all the available features of the product, as well as information on its operation. The information that you get Generac 20kW will certainly help you make a decision on the purchase.
If you already are a holder of Generac 20kW, 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 20kW.
However, one of the most important roles played by the user manual is to help in solving problems with Generac 20kW. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Generac 20kW 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
