Summary of Contents for Generac Power Systems Guardian 0043733
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Owner’s Manual Liquid-cooled, Prepackaged Standby Generators Models: 0043733, 0043734 & 0043735 (40 kW/Single-phase w/ 200 Amp Transfer Switch) 0046262, 0046263 & 0046264 ® (40 kW/Single-phase w/ POWER SYSTEMS, INC. ® 200 Amp Transfer Switch California Emissions) Not intended for use in critical life support applications.
INTRODUCTION Thank you for purchasing the Guardian product line by Generac Power Systems. This model is a compact, high performance, liquid-cooled, engine-driven gen- erator designed to automatically supply electrical power to operate critical loads during a utility power failure. This unit is factory installed in an all-weather, metal enclosure that is intended exclusively for outdoor installation.
Introduction ...Inside Front Cover Read This Manual Thoroughly ...IFC Contents ...IFC Operation and Maintenance...IFC How to Obtain Service ...IFC Authorized Dealer Locator Number ...IFC Safety Rules ...2 Section 1 – General Information...4 Unpacking/Inspection ...4 1.1.1 Lifting the Generator ...4 The Generator...4 Generator AC Connection Systems ...4 Prepackaged Transfer Switch ...4 Automatic System Operation...4...
Important Safety Instructions Guardian Liquid-cooled 40 kW Generator 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 and potential operators of this equipment. SAVE THESE INSTRUCTIONS –...
• 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 a NEGATIVE, NEG or (–) first.
Section 1 — General Information Guardian Liquid-cooled 40 kW Generator UNPACKING/INSPECTION After unpacking, carefully inspect the contents for dam- age. • This standby generator set has been factory installed in an all-weather, metal enclosure that is intended exclusively for outdoor installation. If this generator is used to power electrical load circuits normally powered by a utility power source, code requires to install a transfer switch.
The breaker for each unit is described as follows: Model Number Circuit Breaker Rating 0043733, 0043734, 0043735 0046262, 0046263, 0046264 ENGINE PROTECTIVE DEVICES The engine has several safety switches that cause it to automatically shut down under the following condi- tions: low oil pressure, high coolant temperature, low coolant level, engine overspeed and overcrank.
Section 1 — General Information Guardian Liquid-cooled 40 kW Generator 1.8.2 GENERATOR AND LOAD COMPATIBILITY The generator must be fully compatible with the rated voltage, number of phases and frequency of the con- nected electrical loads. The generator, connected elec- trical devices, or both, can be damaged if voltage, num- ber of phases and frequency are not compatible.
1.10 ENGINE OIL RECOMMENDATIONS The unit has been filled with 15W-40 engine oil at the factory. Use a high-quality detergent oil classified “For Service CC, SD, SE or SF .” Detergent oils keep the engine cleaner and reduce carbon deposits. Use oil hav- ing the following SAE viscosity rating, based on the ambient temperature range anticipated before the next oil change:...
Section 2 — Installation Guardian Liquid-cooled 40 kW Generator Connecting this generator to an electrical system normally supplied by an electric utility shall be by means of a transfer switch (such as the Generac “GTS” type transfer switch), so as to isolate the electric system from the utility distribution system when the generator is operating.
Figure 2.1 – Basic Standby Electric System EMERGENCY CIRCUIT ISOLATION METHOD This prevents overloading the generator by keeping elec- trical loads below the wattage/amperage capacity of the generator. If the generator is powering only critical loads, within its wattage/amperage capacity, during util- ity power outages, consider using the emergency circuit isolation method.
Section 2 — Installation Guardian Liquid-cooled 40 kW Generator NOTE: When using a GTS switch, it is necessary to connect a 240V AC supply to N1 and N2 terminals of the generator to provide for battery charging. Wires T1, T2, 23 and 194 should not be connected.
2.8.1 PRIOR TO INITIAL START-UP Prior to initially starting the generator, it must be properly prepared for use. Any attempt to crank or start the engine before it has been properly serviced with the recommended types and quanti- ties of engine fluids (oil, coolant, fuel, etc.) may result in an engine failure.
Section 3 — Operation Guardian Liquid-cooled 40 kW Generator CONTROL CONSOLE COMPONENTS The components of a liquid-cooled generator control console (Figure 3.1) are as follows: Figure 3.1 – Control Console 3.1.1 AC VOLTMETER The voltmeter displays generator AC output voltage dur- ing operation.
3.2.2 “OFF” POSITION This switch position shuts down the engine. This posi- tion also prevents operation. 3.2.3 “MANUAL” POSITION Set the switch to Manual to crank and start the engine. Transfer to standby power will not automatically occur unless there is a utility failure. With the switch set to AUTO, the engine may crank and start at any time without warning.
Section 4 — Maintenance Guardian Liquid-cooled 40 kW Generator Figure 3.2 – Engine Block Heater Refer to applicable wiring diagram(s) and electrical schematic(s) at the back of this manual for wiring con- nections. WEEKLY EXERCISE CYCLE The generator will start and exercise once every seven days.
Figure 4.1 – Oil Dipstick and Fill CHANGING THE ENGINE OIL AND FILTER 4.2.1 ENGINE OIL RECOMMENDATIONS Use oil of API Service Class SG, SH or SJ. The recommended grade SAE 15W-40. NOTE: The unit is supplied with “break-in” oil. See the “Service Schedule,”...
Section 4 — Maintenance Guardian Liquid-cooled 40 kW Generator Figure 4.3 – Engine Air Cleaner See the “Service Schedule,” Section 4.12, for recom- mended air cleaner maintenance. SPARK PLUGS Reset the spark plug gap or replace the spark plugs as necessary.
COOLING SYSTEM Air intake and outlet openings in the generator compart- ment must be open and unobstructed for continued prop- er operation. This includes such obstructions as high grass, weeds, brush, leaves and snow. Without sufficient cooling and ventilating air flow, the engine/generator quickly overheats, which causes it to shut down.
Section 4 — Maintenance Guardian Liquid-cooled 40 kW Generator 2. Inside the generator set, the chance of rodent entry into the control panel is greatly reduced by the inclusion of adjustable wire connectors. Check that the wire connector screws are tight, thus closing off any gap between the access holes and the wires.
4.12 SERVICE SCHEDULE ATTENTION: It is recommended that all service work be performed by your nearest Generac/Guardian Authorized Dealer. SYSTEM/COMPONENT X = Action R = Replace/Adjust as Needed * = Notify Dealer if Repair is Needed. FUEL Fuel lines and connections* LUBRICATION Oil level Oil filter...
Section 5 — Troubleshooting Guardian Liquid-cooled 40 kW Generator TROUBLESHOOTING GUIDE PROBLEM The engine will not crank. The engine cranks but will not start. The engine starts hard and runs rough. The engine starts, but then shuts down. The Auto/Off/Manual switch is set to OFF , but the engine continues to run.
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Section 6 — Electrical Data Guardian Liquid-cooled 40 kW Generators Wiring Diagram - Drawing No. 0E2966 BLACK 28 Generac ® Power Systems, Inc. 0/BLACK 0/BARE 79/CLEAR LEGEND: ACT: ACTUATOR ELECTRONIC GOVERNOR ALT: DC ALTERNATOR BAT: BATTERY CONTROL CONTACTOR EC1: ENGINE CONNECTOR 1(BLACK) ENGINE HEATER FUEL SOLENOID GND:...
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12V BATTERY BLACK 120VAC BLACK WHITE UTILITY GREEN SUPPLY ONLY USED ON EMISSIONS MODELS Section 6 — Electrical Data Guardian Liquid-cooled 40 kW Generators Wiring Diagram - Drawing No. 0E2967 LEGEND: ACT: ACTUATOR ELECTRONIC GOVERNOR ALT: DC ALTERNATOR CONTROL CONTACTOR EC1: ENGINE CONNECTOR 1(BLACK) ENGINE HEATER...
Section 7 — Exploded Views and Parts Lists Guardian Liquid-cooled 40 kW Generators Mounting Base - Drawing No. 0E2384-A 30 Generac ® Power Systems, Inc.
Warranty (ECS Warranty), which is provided to you by Generac pursuant to California law. See also the “Generac Limited Warranties for Generac Power Systems, Inc.,” which is enclosed herewith on a separate sheet, also provided to you by Generac. The ECS Warranty applies only to the emission control system of your new engine. If there is any conflict in terms between the ECS Warranty and the Generac Warranty, the ECS Warranty shall apply except in circumstances where the Generac Warranty may provide a longer warranty period.
Emission Control System Warranty (ECS Warranty) for 1995 and later model year engines: (a) Applicability: This warranty shall apply to 1995 and later model year engines. The ECS Warranty Period shall begin on the date the new engine or equipment is purchased by/delivered to its original, end-use purchaser/owner and shall con- tinue for 24 consecutive months thereafter.
GUARDIAN “EMERGENCY AUTOMATIC STANDBY GENERATORS” For a period of two years from the date of original sale, Generac Power Systems, Inc. (Generac) will, at its option, repair or replace any part which, upon examination, inspection and testing by Generac or a Generac Authorized Warranty Service Dealer, is found to be defective under normal use and service, in accordance with the warranty schedule set forth below.
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