Summary of Contents for Generac Power Systems 004742-0
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® POWER SYSTEMS, INC. Owner’s Manual Liquid-cooled, Prepackaged Standby Generators Model Numbers 004742-0 004744-0 004746-0 This manual should remain with the unit. ONLY QUALIFIED ELECTRICIANS OR CONTRACTORS SHOULD ATTEMPT INSTALLATION!!
DEALER, please call this number: This symbol points out potential explosion hazard. 1-800-333-1322 This symbol points out potential fire hazard. This symbol points out potential electrical shock Locate us on the web at: hazard. www.generac.com...
Table of Contents Liquid-cooled 15 kW, 20 kW and 25 kW Generators INTRODUCTION ........IFC Section 3 — OPERATION....12 Using a Standard “GTS” Transfer Switch..12 SAFETY RULES ........2 Control Console Components......12 Section 1 — GENERAL Manual Transfer and Startup ......13 INFORMATION....4 Retransfer and Shutdown......13 Generator ............4 Automatic Operation ........13...
Important Safety Instructions Liquid-cooled 15 kW, 20 kW and 25 kW Generators SAVE THESE INSTRUCTIONS – The manufacturer suggests that these rules for safe operation be copied and posted in potential hazard areas. Safety should be stressed to all operators, potential operators, and service and repair technicians for this equipment. SAVE THESE INSTRUCTIONS –...
Important Safety Instructions Liquid-cooled 15 kW, 20 kW and 25 kW Generators • Inspect the generator regularly, and promptly repair • Generators installed with an automatic transfer or replace all worn, damaged or defective parts using switch will crank and start automatically when nor- only factory-approved parts.
Model 004742-0: Provides 15,000 watts (15 kW) of 1 phase power. Please reference the transfer switch manual for spe- Model 004744-0: Provides 20,000 watts (20 kW) of 1 phase power.
LED2 personnel to be used in all phases of handling LED1 and unpacking. CUT R83 CR41 2002 GENERAC POWER SYSTEMS, ASSY #076009A FOR 50HZ 1.10 SPECIFICATIONS 1.7.5 PCB OPERATION LED’S 1.10.1 GENERATOR SPECIFICATIONS • LED 1 is RED. This LED will be on when utility sensing is NOT available to the circuit board.
Section 1 — General Information Liquid-cooled 15 kW, 20 kW and 25 kW Generators 1.10.2 ENGINE SPECIFICATIONS 1.12 RECONFIGURING THE FUEL SYSTEM Make................Mitsubishi Displacement ..........92 inches (1.5 liters) NOTE: Cylinder Arrangement............4, in-line All models are configured for natural gas from the Valve Arrangement..........Overhead Cam factory.
Section 2 — Installation Liquid-cooled 15 kW, 20 kW and 25 kW Generators 1.13 TORQUE SPECIFICATIONS 1.16 BEFORE INSTALLATION Before installing this equipment, check the ratings of Cylinder Head ..........15 (+ 90° + 90°) ft.lb. both the generator and the transfer switch. Read Intake Manifold ..............13 ft.lb.
Section 2 — Installation Liquid-cooled 15 kW, 20 kW and 25 kW Generators 2.1.1 NFPA STANDARDS • Install the generator as close as possible to the transfer switch. This reduces the length of wiring The following published standards booklets pertain- and conduit.
Section 2 — Installation Liquid-cooled 15 kW, 20 kW and 25 kW Generators EMERGENCY CIRCUIT ISOLATION Proper grounding helps protect personnel against electrical shock in the event of a ground fault condi- METHOD tion in the generator or in connected electrical This prevents overloading the generator by keeping devices.
Section 2 — Installation Liquid-cooled 15 kW, 20 kW and 25 kW Generators 2.10 BATTERY INSTALLATION • Spilled electrolyte is to be washed down with an acid-neutralizing agent. A common practice is to use a solution of one pound (500 grams) bicarbon- DANGER ate of soda to one gallon (4 liters) of water.
Section 3 — Operation Liquid-cooled 15 kW, 20 kW and 25 kW Generators USING A STANDARD “GTS” 2.11.2 TRANSFER SWITCH TRANSFER SWITCH If this generator is used to supply power to any elec- trical system normally powered by an electric utility, When required, the pre-packaged standby generator the National Electrical Code requires that a transfer can be installed with a standard “GTS”...
Section 3 - Operation Liquid-cooled 15 kW, 20 kW and 25 kW Generators 3.2.1 HOURMETER NOTE: This fuse will not remove the + battery input Indicates time the engine-generator has operated, in power from the PCB when it opens. This means hours and tenths of hours.
Section 4 — Maintenance Liquid-cooled 15 kW, 20 kW and 25 kW Generators WEEKLY EXERCISE CYCLE ENGINE HEATER The generator will start and exercise once every 7 This standby generator comes equipped with a block days. During this weekly exercise, the unit runs for heater (Figure 3.3), similar to the block heaters used about 20 minutes and shuts down.
Section 4 — Maintenance Liquid-cooled 15 kW, 20 kW and 25 kW Generators E. EVERY 500 OPERATING HOURS CHECKING FLUID LEVELS 1.Service air cleaner. 4.4.1 CHECK ENGINE OIL 2.Check starter. Check engine crankcase oil level (Figure 4.1) at least 3.Check engine DC alternator. every 20 hours of operation, or prior to use.
Section 4 — Maintenance Liquid-cooled 15 kW, 20 kW and 25 kW Generators MAINTENANCE OWNER/ DANGER OPERATOR CAN PERFORM Do not attempt to adjust the governor. Only qualified service facilities should adjust the 4.5.1 CHECK ENGINE OIL LEVEL governor. Excessively high operating speeds are Refer to “Checking Fluid Levels”...
Section 4 — Maintenance Liquid-cooled 15 kW, 20 kW and 25 kW Generators Figure 4.4 – Setting the Spark Plug Gap SET PLUG GAP AT 0.5-0.6 mm After refilling the crankcase with oil, always (0.020-0.025 inch) check oil level on dipstick. NEVER OPERATE ENGINE WITH OIL BELOW THE DIPSTICK “ADD”...
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Section 4 — Maintenance Liquid-cooled 15 kW, 20 kW and 25 kW Generators sulfuric solution that can cause severe burns. DO NOT permit fluid to contact eyes, skin, clothing, painted surfaces, wiring insulation, etc. If any bat- Be sure the Auto/Off/Manual switch is set to tery fluid is spilled, flush the affected area with the OFF position before connecting the battery clear water immediately.
Section 4 — Maintenance Liquid-cooled 15 kW, 20 kW and 25 kW Generators SCHEDULED MAINTENANCE Following is a recommended maintenance schedule for small standby and residential generator sets. The estab- lished intervals in the schedule are the maximum recommended when the unit is used in an average service appli- cation.
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Section 4 — Maintenance Liquid-cooled 15 kW, 20 kW and 25 kW Generators Maintenance Level 1 Level 2 Level 3 Level 4 Tasks Recom- Task Required Task Required Task Task mended Comp. to be done Comp. to be done Comp. Required Comp.
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Section 4 — Maintenance Liquid-cooled 15 kW, 20 kW and 25 kW Generators Maintenance Level 1 Level 2 Level 3 Level 4 Tasks Recom- Task Required Task Required Task Task mended Comp. to be done Comp. to be done Comp. Required Comp.
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Section 8 - Exploded Views and Parts Liquid-cooled 15 kW, 20 kW and 25 kW Generators Battery — Drawing No. 0E0770-B STARTER SOLENOID TO ENGINE BLOCK ITEM PART NO. QTY. DESCRIPTION 077483 BATT 12VDC 75-AH 26 (NOT INCLUDED) 038804D CABLE BATT RED #4 X 20.00 038805B CABLE BATT BLK #4 X 23.00 0742600131...
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Section 8 - Exploded Views and Parts Liquid-cooled 15 kW, 20 kW and 25 kW Generators Muffler — Drawing No. 0E0773-A ITEM PART NO. QTY. DESCRIPTION 0A4355 MANIFOLD EXHAUST 1.5L 0E2844 NIPPLE TOE 1.5NPTX5.5 BLK IRON 036434 BOLT U 5/16-18 X 2.09 036449 SADDLE 2 INCH 0E0109...
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Section 8 - Exploded Views and Parts Liquid-cooled 15 kW, 20 kW and 25 kW Generators Governor Assembly — Drawing No. 0E1331-B ITEM (13) NEOPRENE COATING WIRE HARNESS SECURE WIRE HARNESS WITH TIE WRAP AS SHOWN. "A" TO "A" INTAKE MANIFOLD (REF.) CARBURETOR ARM (REF.)
Owner’s Manual. For warranty purposes, Generac recommends that you retain all receipts covering maintenance on your engine. However, Generac cannot deny warranty solely due to the lack of receipts or for your failure to ensure the completion of all scheduled maintenance.
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Such use voids this ECS Warranty and shall be sufficient grounds for disallowing an ECS Warranty claim. Generac shall not be held liable hereunder for failures of any warranted parts of a Generac engine caused by the use of such an unapproved, add-on, modified, counterfeit and/or “grey market”...
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FOR GENERAC RESIDENTIAL AND LIGHT COMMERCIAL UNITS For a period of two (2) years or two thousand (2,000) hours of operation from the date of sale, which ever occurs first, Generac Power Systems, Inc. will, at its option, repair or replace any part(s) which, upon examination, inspection, and testing by Generac Power Systems or an Authorized/Certified Generac Power Systems Dealer, or branch thereof, is found to be defective under normal use and service, in accordance with the warranty schedule set forth below.
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0D8666 (A) ROOF ACSTC&STND CMPRTMNT 1.5L 0D8664C (G) DUCT CENTER 1.5L 0D8657 (A) SUPPORT RADIATOR 1.5L MITSU 0D8660 (A) BRACE SIDE 1.5L MITSU 0A7568 (A) DOORWELDMENT 1.5EPS 0D8659 (A) CORNER POST REAR RH SIDE 1.5L 0D8662 (A) DOOR REAR COMPARTMENT 1.5L 0D8661 (A) BRACE REAR 1.5L MITSU 0D8658 (A)
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0D8666 (A) ROOF ACSTC & STND CMPRTMNT 1.5L 0D8664C (G) DUCT CENTER 1.5L 0D8657 (A) SUPPORT RADIATOR 1.5L MITSU 0D8660 (A) BRACE SIDE 1.5L MITSU 0A7568 (A) DOOR WELDMENT 1.5 EPS 0D8659 (A) CORNER POST REAR RH SIDE 1.5L 0D8662 (A) DOOR REAR COMPARTMENT 1.5L 0D8661 (A) BRACE REAR 1.5L MITSU...
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0A4355 MANIFOLD EXHAUST 1.5L 0E2844 NIPPLE TOE 1.5 NPT X 5.5 BLK IRON 036434 BOLT U 5/16-18 X 2.09 036449 SADDLE 2 INCH 0E0109 PIPE EXHAUST 1.5L STNDRD & ACSTC 0C1318 FLEX PIPE EXHAUST 0D8657 SUPPORT RADIATOR 1.5L MITSU 027837 SCREW RHM 1/4-20 X 2-1/4 0D9437 MUFFLER 1.5L ACOUSTIC&STANDARD...
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EC-3 N.C. EC-4 EC-5 225A BLUE 225A BLUE 2 WIRE START FOR STANDARD GENERAC TRANSFER SWITCH CONNECTION USE BLUE WIRE FOR 240V L-L SYSTEMS YELLOW WIRE FOR 208V L-L SYSTEMS YELLOW INSULATE UNUSED WIRE ORANGE ALTERNATE TR1 YELLOW (RED) (BLUE)