Owner’s Manual and Installation Instructions Air-cooled Recreational Vehicle Generator • Model No: 00941-4 IMPACT-36 plus II with Inverter This manual should remain with the unit. INTRODUCTION Thank you for purchasing this generator by Generac Power Systems, Inc. This model is designed and manufactured to supply electrical power for recreational vehicles. ◆ READ THIS MANUAL THOROUGHLY If any portion of this manualis not understood, contact the nearest Generac Authorized Service Dealer for starting, operating, and servicing procedures. Throughout this publication, and on tags and decals affixed to the generator, DANGER, WARNING, CAUTION, and NOTE blocks are used to alert personnel to special instructions about a particular operation that may be hazardous if performed incorrectly or carelessly. Observe them carefully. Their definitions are as follows: DANGER After this heading, read instructions that, if not strictly complied with, will result in serious personal injury, death or severe property damage. After this heading, read instructions that, if not strictly complied with, may result in personal injury or property damage. After this heading, read instructions that, if not strictly complied with, could result in damage to equipment and/or property. NOTE: After this heading, read explanatory statements that require special emphasis. These safety warnings cannot eliminate the hazards that they indicate. Common sense and strict compliance with the special instructions while performing the service are essential for preventing accidents. Four commonly used safety symbols accompany the DANGER, WARNING, and CAUTION blocks. Here are the types of information indicated by each symbol: ! This symbol points out important safety information that, if not followed, could endanger personal safety and/or property to self and others. This symbol points out potential explosion hazard. The operator (i.e., the driver) is responsible for the proper and safe use of the vehicle and its equipment, and for the safety of all vehicle occupants. Before using this equipment, we strongly recommend that the operator read this manual and thoroughly understand all instructions. We also strongly recommend instructing other occupants in the vehicle to properly start and operate the generator. This prepares them to operate the equipment in case of an emergency. ◆ CONTENTS This manual contains pertinent owner’s information, including warranty, electrical diagrams, exploded views, and lists of repair parts for generator models 000941-4. In addition, the latter portion of this manual contains information necessary for the proper installation of these generators. ◆ OPERATION AND MAINTENANCE It is the operator's responsibility to perform all safety checks, to make sure that all maintenance for safe operation is performed promptly, and to have the equipment checked periodically by a Generac Authorized Service Dealer. Normal maintenance service and replacement of parts are the responsibilities of the owner/operator and, as such, are not considered defects in materials or workmanship within the terms of the warranty. Individual operating habits and usage contribute to the need for maintenance service. Proper maintenance and care of the generator minimize problems and operating expenses. See the Generac Authorized Service Dealer for service aids and accessories. ◆ HOW TO OBTAIN SERVICE When the generator requires servicing or repairs, simply contact a Generac Authorized Service Dealer for assistance. Service technicians are factory-trained and are capable of handling all service needs. When contacting a Generac Authorized Service Dealer or the factory about parts and service, always supply the complete model number and serial number of the unit, as given on its data decal, which is located on the generator. Model No. ____________ Serial No. ______________ AUTHORIZED SERVICE DEALER LOCATION This symbol points out potential fire hazard. To locate the nearest GENERAC AUTHORIZED This symbol points out potential electrical shock hazard. SERVICE DEALER, please call this number: 1-800-333-1322 ONLY DEALER LOCATION INFORMATION CAN BE OBTAINED AT THIS NUMBER. Generac® Power Systems, Inc. Table of Contents IMPACT-36 plus II Recreational Vehicle Generator Part I – Owner’s Manual Part II – Installation Instructions Introduction ....................................................Inside Front Cover Safety Rules..................................................................................16 Read This Manual Thoroughly ............................................IFC Contents ..............................................................................IFC Operation and Maintenance ................................................IFC How to Obtain Service ........................................................IFC Authorized Service Dealer Locator Number ............................IFC Section 1 – General Information ............................................18 1.1 Purpose and Scope of the Manual ............................18 1.2 Safety ......................................................................18 1.3 Standards Booklets ..................................................18 Safety Rules ....................................................................................2 1.4 Equipment Description ............................................18 Section 1 – General Information ..............................................4 1.5 Engine Generator Operating Speed ..........................18 1.1 Generator Identification ..................................................4 1.2 Generator Applicability ....................................................6 2.1 Location and Support ....................................................19 1.3 Safety ..............................................................................6 2.2 Generator Compartments ..............................................20 1.4 Generator Control Panel ..................................................6 2.3 Cooling and Ventilating Air ............................................23 1.5 Engine Protective Devices ................................................7 2.4 Propane Gas Fuel System ..............................................25 Section 2 – Operation ..................................................................7 2.5 Exhaust System ............................................................27 2.6 Electrical Connections ..................................................28 2.7 Battery Installation ........................................................31 2.8 Optional Accessories......................................................32 2.1 Before Starting the Engine ..............................................7 2.2 Starting the Generator ....................................................8 2.3 Stopping the Generator ..................................................8 2.4 Applying Loads to Generator ..........................................9 2.5 Attention Required After Submersion ..............................9 2.6 Operation in High Grass or Brush ..................................9 2.7 Operating Precautions ....................................................9 2.8 Fuel Requirements (LP Units) ..........................................9 2.9 Engine Oil Requirements ................................................9 2.10 LP Generator Specifications ............................................9 2.11 Engine Specifications ......................................................9 Section 3 – Maintenance ..........................................................10 3.1 Maintenance ..................................................................10 3.2 Checking the Engine Oil Level ......................................10 3.3 Change Engine Oil ........................................................10 3.4 Change Oil Filter............................................................10 3.5 Engine Air Cleaner ........................................................11 3.6 Clean Air Intake Screen ................................................11 3.7 Engine Spark Plug ........................................................11 3.8 Inverter ..........................................................................11 3.9 Cleaning the Generator ..................................................11 3.10 Battery ..........................................................................12 3.11 Service and Adjustments ..............................................12 3.12 Adjusting the Carburetor ..............................................12 3.13 Adjusting Valve Clearance ..............................................12 3.14 Major Service Manual ....................................................13 3.15 Exercising the Generator ..............................................13 3.16 Out of Service Protection ..............................................13 3.17 Return Unit to Service After Storage..............................13 Section 2 – Installation ............................................................19 Section 3 – Post-installation Startup Checks ......................33 3.1 Post Installation Tests ....................................................33 3.2 Before Initial Startup ....................................................33 3.3 Initial Start ....................................................................33 3.4 Testing Under Load ......................................................33 3.5 Installation Checklist ....................................................34 Section 4 – Troubleshooting ....................................................35 4.1 Troubleshooting Guide ..................................................35 Section Section Section Section 5 6 7 8 – – – – Electrical Data........................................................36 Exploded Views and Parts Lists ........................38 Installation Diagram ............................................47 Warranty..................................................................48 Section 4 – Notes........................................................................14 Generac® Power Systems, Inc. 1 Safety Rules IMPACT-36 plus II Recreational Vehicle Generator SAVE THESE INSTRUCTIONS – The manufacturer suggests that these rules for safe operation be copied and posted in potential hazard areas of the recreational vehicle. Safety should be stressed to all operators and potential operators of this equipment. ! ! ! WARNING: The engine exhaust from this product contains chemicals known to the state of California to cause cancer, birth defects, or other reproductive harm. ! WARNING: ! This product contains or emits chemicals known to the state of California to cause cancer, birth defects or other reproductive harm. Study these SAFETY RULES carefully before installing, operating, or servicing this equipment. Become familiar with this manual and with the unit. The generator can operate safely, efficiently, and reliably only if it is properly installed, operated, and maintained. Many accidents are caused by failing to follow simple and fundamental rules or precautions. Generac cannot possibly anticipate every possible cir cumstance that might involve a hazard. The warnings in this manual, and on tags and decals affixed to the unit, are, therefore, not all-inclusive. If using a procedure, work method, or operating technique that Generac does not specifically recommend, satisfy yourself that it is safe for others. Also make sure the procedure, work method, or operating technique chosen does not render the generator unsafe. DANGER ! Despite the safe design of this generator, operating this equipment imprudently, neglecting its maintenance, or being careless can cause possible injury or death. Permit only responsible and capable persons to operate and maintain this equipment. ! Parts of the generator are rotating and/or hot during operation. Exercise care near running generators. Potentially lethal voltages are generated by these machines. Ensure all steps are taken to render the machine safe before attempting to work on the generator. ! GENERAL HAZARDS ! • For safety reasons, Generac recommends that the installation, initial startup, and maintenance of this equipment be performed by a Generac Authorized Service Dealer. 2 Generac® Power Systems, Inc. ! • The generator engine releases DEADLY carbon monoxide gas through its exhaust system. This dangerous gas, if breathed in sufficient concentrations, can cause unconsciousness or even death. Never operate the generator set with the vehicle inside any garage or other enclosed area. DO NOT OPERATE THE GENERATOR IF THE EXHAUST SYSTEM IS LEAKING OR HAS BEEN DAMAGED. SYMPTOMS OF CARBON MONOXIDE POISONING ARE (a) inability to think coherently, (b) nausea, (c) vomiting, (d) twitching muscles, (e) throbbing temples, (f) dizziness, (g) headaches, (h) weakness, and (i) sleepiness. IF EXPERIENCING ANY OF THESE SYMPTOMS, MOVE INTO FRESH AIR IMMEDIATELY. IF SYMPTOMS PERSIST, GET MEDICAL HELP. Shut down the generator and do not operate it until it has been inspected and repaired. • Never sleep in the vehicle while the genset is running unless the vehicle has a working carbon monoxide detector. The exhaust system must be installed in accordance with the genset installation manual. Make sure there is ample fresh air when operating the genset in a confined area. • The engine exhaust fumes contain carbon monoxide, which can be DEADLY. This dangerous gas, if breathed in sufficient concentrations, can cause unconsciousness or even death. Thus, the exhaust system must be installed properly, in strict compliance with applicable codes and standards. Following installation, do nothing that might render the system unsafe or in noncompliance with such codes and standards. The generator compartment must be completely vapor-sealed from the vehicle interior. There must be no possibility of exhaust fumes entering the vehicle interior. Never operate this equipment with a leaking or defective exhaust system. • Keep hands, feet, clothing, etc., away from drive belts, fans, and other moving or hot parts. Never remove any drive belt or fan guard while the unit is operating. • Adequate, unobstructed flow of cooling and ventilating air is critical to correct generator operation and is required to expel toxic fumes and fuel vapors from the generator compartment. Without sufficient cooling airflow, the engine/generator quickly overheats, which seriously damages the generator. Do not alter the installation or permit even partial blockage of ventilation provisions, as this can also seriously affect the safe operation of the generator. Safety Rules IMPACT-36 plus II Recreational Vehicle Generator • When working on this equipment, remain alert at all times. Never work on the equipment when physically or mentally fatigued. • Inspect the generator regularly, and contact the nearest Generac Authorized Service Dealer immediately for parts needing repair or replacement. • Before performing any maintenance on the generator, disconnect its battery cables to prevent accidental startup. First, disconnect the cable from the battery post, indicated by a NEGATIVE, NEG, or (–). Reconnect this cable last. • Never use the generator, or any of its parts, as a step. Stepping on the unit can stress and break parts, resulting in dangerous operating conditions due to leaking exhaust gases, fuel leakage, oil leakage, etc. • Never insert any tool or other object through openings in the generator interior, even if the unit is not running. Seriouse injury or damage to the equipment may occur. ELECTRICAL HAZARDS • The generator covered by this manual produces dangerous electrical voltages and can cause fatal electrical shock. Avoid contact with bare wires, terminals, connections, etc., while the unit is running. Before operating the generator, ensure all appropriate covers, guards, and barriers are in place . If work must be donearound an operating unit, stand on an insulated, dry surface to reduce shock hazard. • Do not handle any kind of electrical device while standing in water, while barefoot, or while hands or feet are wet. DANGEROUS ELECTRICAL SHOCK MAY RESULT. • During installation onto the vehicle, have the generator properly grounded (bonded), either by solid mounting to the vehicle frame or chassis, or by means of an approved bonding conductor. DO NOT disconnect the bonding conductor, if so equipped. DO NOT reconnect the bonding conductor to any generator part that might be removed or disassembled during routine maintenance. If the grounding conductor must be replaced, use only a flexible conductor that is of No. 8 American Wire Gauge (AWG) copper wire minimum. • In case of an accident caused by electric shock, immediately shut down the source of electrical power. If this is not possible, attempt to free the victim from the live conductor. AVOID DIRECT CONTACT WITH THE VICTIM. Use a nonconducting implement, such as, a dry rope or board, to free the victim from the live conductor. If the victim is unconscious, apply first aid and get immediate medical help. • Never wear jewelry when working on this equipment. Jewelry can conduct electricity, resulting in electric shock, or may get caught in moving components, causing, injury. FIRE HAZARDS • For fire safety, the generator must be installed and maintained properly. Installation must always comply with NFPA 70 (latest edition), “National Electrical Code”, Article 551, and NFPA 1192 (latest edition), “Standard for Recreational Vehicles”, along with all applicable codes, standards, laws, and regulations. Adhere strictly to local, state, and federal electrical and building codes. Comply with regulations the Occupational Safety and Health Administration (OSHA) has established. Also, ensure that the generator is installed in accordance with the manufacturer’s instructions and recommendations. After proper installation, do nothing that might alter the installation and render the unit in noncompliance with the aforementioned codes, standards, laws, and regulations. • Keep a fire extinguisher in the vehicle at all times. Extinguishers rated “ABC” by the National Fire Protection Association are appropriate for use on the recreational vehicle generator electrical system. Keep the extinguisher properly charged and be familiar with its use. If there are any questions pertaining to fire extinguishers, consult the local fire department. EXPLOSION HAZARDS • Do not smoke around the generator. Wipe off any fuel or oil spills immediately. Ensure that no combustible material is left in the generator compartment, or on or near the generator, as FIRE or EXPLOSION may result. Keep the area surrounding the generator clean and free of debris. • All fuel types are potentially FLAMMABLE and/or EXPLOSIVE and should be handled with care. Comply with all laws regulating the storage and handling of fuels. Inspect the unit’s fuel system frequently and correct any leaks immediately. Before placing this equipment into service, the fuel supply lines must be properly installed, purged, and leaktested according to applicable fuel-gas codes. Generac® Power Systems, Inc. 3 IMPACT 36 plus II Recreational Vehicle Generator Section 1 – General Information IMPACT-36 plus II Recreational Vehicle Generator 1.1 GENERATOR IDENTIFICATION Please record the following information from the generator DATA DECAL or information decal, located below the user control panel. 1. Model Number ____________________ 2. Serial Number __________________ 3. kW Rating__________________________ 4. Rated Voltage __________________ 5. Phase ______________________________ 6. Hertz __________________________ ◆ 1.1.1 IMPACT-36LPG PLUS II FEATURES 13 14 15 8 1 2 5 7 11 12 3 16 4 10 9 6 REFERENCE NUMBER IDENTIFICATION 1. Generator Air Intake Screen 4 9. Data Decal 2. Air Cleaner 10. 12 Volt Battery Connection 3. Air Intake Tube 11. Engine Start/Stop Switch 4. LP Fuel Regulator 12. Generator DC Output Leads 5. Oil Dipstick and Filler Tube 13. Circuit Breaker 6. LP Carburetor 14. Fuse 7. LP Fuel Solenoid 15. Hour Meter 8. Fuel Primer Switch 16. Inverter Harness Connector ® Generac Power Systems, Inc. Section 1 – General Information IMPACT-36 plus II Recreational Vehicle Generator ◆ 1.1.2 INVERTER FEATURES (PART NO. 0D4885) 1 2 3 5 4 REFERENCE NUMBER IDENTIFICATION 1. Inverter 4. DC Input 2. 12 Pin Connection 5. Cooling Fan 3. Customer AC Output Generac® Power Systems, Inc. 5 Section 1 – General Information IMPACT-36 plus II Recreational Vehicle Generator 1.2 GENERATOR APPLICABILITY These generators have been designed and manufactured for supplying electrical power for recreational vehicles. Do not modify the generator or use it for any application other than for what it was designed. If there are questions pertaining to its application, write or call the factory. Do not use the unit until advised by a competent authority. DANGER For fire safety, the generator must have been properly installed in compliance with (1) ANSI 119.2-1975/NFPA 501C-1974 “Standard for Recreational Vehicles”, Part III, “Installation of Electrical Systems.” The generator also must have been installed in strict compliance with the manufacturer’s detailed installation instructions. After installation, do nothing that might render the unit in non-compliance with such codes, standards and instructions. This generator has been designed to work with an inverter (P/N 0D4885). The inverter changes the voltage from the generator from a DC to an AC voltage. This generator will not operate properly without the inverter box connected. All repairs of the inverter must be handled by an authorized service dealer (see Page 12 in “Maintenance”). Use this generator to supply electrical power for operating 120 volts, single phase, 60 Hertz, electrical loads. These loads can require up to 3400 watts (3.4 kW) for the Impact-36 plus II. The maximum current at 120 volts is 28.3 amperes for the Impact-36 plus II. ! Do not overload the generator. Some installations may require that electrical loads be alternated to avoid overloading. Applying excessively high electrical loads may damage the generator and may shorten its life. Add up the rated watts of all electrical lighting, appliance, tool and motor loads the generator will power at one time. This total should not be greater than the wattage capacity of the generator. If an electrical device nameplate gives only volts and amps, multiply volts times amps to obtain watts (volts x amps = watts). Some electric motors require more amps of current for starting than for continuous operation. 1.3 SAFETY Before using the generator set, carefully read GENERAL SAFETY RULES inside the cover. Comply with these RULES to prevent accidents and damage to equipment and/or property. Generac suggests copying and posting the GENERAL SAFETY RULES in potential hazard areas of the recreational vehicle. Safety should be stressed to all operators of this equipment. 1.4 GENERATOR CONTROL PANEL Mounted on the generator control panel (Figure 1.1) are the following features: Figure 1.1 — Typical Control Panel Circuit Breaker Fuse Hour Meter Fuel Primer Start/Stop Switch ◆ 1.4.1 FUEL PRIMER Before starting a cold engine (if it has not been started in more than two weeks), press this switch to bring fuel from the tank to the fuel carburetor. This rocker type switch springs back into its original position when released. ◆ 1.4.2 START/STOP SWITCH To crank and start the engine, hold this switch at its START position. Release the switch when the engine starts. To stop an operating engine, press and hold the switch in its STOP position until the engine shuts off. The switch center position is the RUN position. ◆ 1.4.3 FUSE Protects the engine DC control circuit against electrical overload. If the fuse element has melted open due to overloading, the engine cannot be cranked. If the fuse must be replaced, use only an identical replacement fuse. ◆ 1.4.4 CIRCUIT BREAKERS Protects generator's AC output circuit against overload, i.e., prevents unit from exceeding wattage/amperage capacity. 6 Generac® Power Systems, Inc. Section 2 – Operation IMPACT-36 plus II Recreational Vehicle Generator ◆ 1.4.5 HOUR METER ◆ 1.5.4 LOW VOLTAGE Indicates the time the engine-generator has operated, in hours and tenths of hours. Use the hourmeter along with the periodic maintenance schedule for the generator set. The computer monitors the voltage output of the generator. If voltage sensors indicate that voltage has dropped below a preset level, the engine will automatically shut down. Once the unit has shutdown, the computer is automatically reset when the engine is restarted. 1.5 ENGINE PROTECTIVE DEVICES This generator has a computer that monitors low oil pressure, oil temperature, engine speed, and low voltage output. This section discusses those protective devices. ◆ 1.5.1 AUTOMATIC LOW OIL PRESSURE SHUTDOWN ▼ The engine is equipped with an oil pressure sensor that shuts down the engine automatically when oil pressure is too low. If the engine shuts down by itself and the fuel tank has enough fuel, check the engine oil level. 22.214.171.124 Initial Startup ▼ During initial startup, a time delay built into the shutdown control system allows oil pressure to build. The delay allows the engine to run for about 10 seconds before sensing oil pressure. 126.96.36.199 Sensing low pressure If the system senses low oil pressure during operation, the engine shuts down. If the engine has not been restarted after a low oil pressure shutdown, and the low oil level has not been corrected, the engine runs for about 10 seconds as described above, then stops. ◆ 1.5.2 HIGH TEMPERATURE SHUTDOWN A temperature switch with normally-open (N.O.) contacts is mounted near the oil filter. If engine temperature were to exceed a preset temperature, the switch contacts close and the engine shuts down. ◆ 1.5.3 OVERSPEED If engine speed is increased manually (or otherwise) beyond the control of the computer control system, the computer disables the load capability of the generator and shuts down the engine. NOTE: The computer allows for the low voltage output that occurs during startup. A time delay that allows the engine to start and warm up is programmed into the monitoring system. ! 2.1 Before restarting a generator that has been shutdown, disconnect all loads the generator might power by whatever means provided, such as the recreational vehicle’s main circuit breaker. BEFORE STARTING THE ENGINE IMPORTANT: INSTRUCTIONS AND INFORMATION IN THIS MANUAL ASSUME THE GENERATOR HAS BEEN PROPERLY INSTALLED, CONNECTED, SERVICED, TESTED AND ADJUSTED BY A QUALIFIED INSTALLATION TECHNICIAN OR INSTALLATION CONTRACTOR. ◆ 2.1.1 INSTALLATION Generator installation must have been properly completed so it complies with all applicable codes, standards and regulations and with the manufacturer's recommendations. ◆ 2.1.2 ENGINE LUBRICATION Have engine crankcase properly serviced with recommended oil before starting. Refer to "Maintenance" and "Specifications" sections for oil servicing procedures and recommendations. ! Any attempt to crank or start the engine before it has been properly serviced with the recommended oil may result in engine failure. ◆ 2.1.3 FUEL SUPPLY ! Do not attempt to physically adjust or control the engine speed. Equipment damage or personal injury may result. The engine must have adequate supply of proper fuel to operate. Before starting, check that sufficient fuel is available. Generac® Power Systems, Inc. 7 Section 2 – Operation IMPACT-36 plus II Recreational Vehicle Generator ◆ 2.1.4 COOLING AND VENTILATING AIR Air inlet and outlet openings in the generator compartment must be open and unobstructed for continued proper operation. Without sufficient cooling and ventilating air flow, the engine-generator quickly overheats, which causes it to automatically shutdown. Overheating could also damage the unit or the vehicle. ◆ 2.1.5 ENGINE EXHAUST GAS Before starting the generator engine, be sure there is no way for exhaust gases to enter the vehicle interior and endangering people or animals. Close windows, doors and other openings in the vehicle that, if open, might permit exhaust gases to enter the vehicle. DANGER ! The generator engine releases DEADLY carbon monoxide gas through its exhaust system. This dangerous gas, if breathed in sufficient concentrations, can cause unconsciousness or even death. Never operate the generator set with the vehicle inside any garage or other enclosed area. DO NOT OPERATE THE GENERATOR IF THE EXHAUST SYSTEM IS LEAKING OR HAS BEEN DAMAGED. SYMPTOMS OF CARBON MONOXIDE POISONING ARE (a) inability to think coherently, (b) nausea, (c) vomiting, (d) twitching muscles, (e) throbbing temples, (f) dizziness, (g) headaches, (h) weakness, and (i) sleepiness. IF EXPERIENCING ANY OF THESE SYMPTOMS, MOVE INTO FRESH AIR IMMEDIATELY. IF SYMPTOMS PERSIST, GET MEDICAL HELP. Shut down the generator and do not operate it until it has been inspected and repaired. DANGER ! 2.2 Never sleep in the vehicle while the genset is running unless the vehicle has a working carbon monoxide detector. The exhaust system must be installed in accordance with the genset installation manual. Make sure there is ample fresh air when operating the genset in a confined area. STARTING THE GENERATOR IMPORTANT: READ THE VEHICLE MANUFACTURER’S INSTRUCTIONS. THE OWNER/OPERATOR SHOULD BECOME FAMILIAR WITH THE VEHICLE IN WHICH THIS GENERATOR IS INSTALLED. DIFFERENCES EXIST BETWEEN VEHICLES. FOR EXAMPLE, SOME VEHICLES MAY USE A TRANSFER SWITCH TO ISOLATE DOCKSIDE POWER FROM THE GENERATOR, WHILE OTHER VEHICLES MAY USE AN ISOLATING RECEPTACLE. SOME VEHICLES MAY BE EQUIPPED WITH A DC CONVERTER WHICH ALLOWS THE GENERATOR TO POWER CERTAIN DC LIGHTING AND OTHER DC LOADS. 8 Generac® Power Systems, Inc. To crank and start the generator engine, proceed as follows: 1. Turn OFF electrical loads, using whatever means provided in the vehicle (such as a main line circuit breaker or transfer switch). NOTE: If the engine is started with the start/stop switch on the generator control panel, turn OFF loads by setting the panel’s main breaker to its “OFF” or “OPEN” position. Electrical load circuits may be turned ON after the generator has started, stabilized and warmed up. NOTE: On gas units, use of the fuel primer is needed only during the initial startup, after the unit has not been used for an extended period of time (two weeks) or the fuel line has been disconnected. The primer is used to prime the fuel pump and carburetor. 2. To crank and start the engine, hold the start/stop switch at START. Release the switch when the engine starts. If the engine does not start after it has been cranking for 15 seconds, release the start/stop switch and try again. Holding the switch for longer than 15 seconds may damage the starter motor. 3. Let the engine run at no-load for a few minutes to stabilize and warm up the engine. 4. Turn ON electrical loads, using whatever means provided (such as a main circuit breaker or transfer switch). NOTE: ! If starting a warm generator engine, press the start switch only slightly to engage the ignition system. However, press and hold the starter switch for a minimum of two (2) seconds to energize the field boost system. If starting the engine without energizing the field boost system, the generator produces no output. 2.3 STOPPING THE GENERATOR 1. Turn OFF all electrical loads, using whatever means provided (such as a main circuit breaker or transfer switch). 2. Let the generator run at no-load for a few minutes, to stabilize internal engine-generator temperatures. 3. Hold Start/Stop switch in its STOP position. Section 2 – Operation IMPACT-36 plus II Recreational Vehicle Generator 2.4 APPLYING LOADS TO GENERATOR When applying electrical loads to the generator, observe these guidelines: • Before applying electrical loads, let the generator stabilize and warm up for a minute or two. • DO NOT overload the generator. ◆ 2.4.1 LETTING ENGINE STABILIZE The generator supplies correctly rated frequency and voltage only at the proper governed speed. Some electrical appliances may be extremely sensitive to voltage and frequency. Incorrect frequencies and/or voltages can damage those appliances. If electrical loads are applied at reduced operating speeds, such loads imposed on the engine when sufficient power is not available may shorten engine life. Never turn ON electrical loads until after the generator engine has started and stabilized ON-speed. 2.5 ATTENTION REQUIRED AFTER SUBMERSION If the motor home generator has been submerged in water, it must NOT be started or operated. Following any submersion in water, have an authorized Generac Service Facility thoroughly clean and dry the generator. 2.6 OPERATION IN HIGH GRASS OR BRUSH Never operate the generator while the vehicle is parked in high grass, weeds, brush or leaves. Such materials can ignite and burn from the heat of the exhaust system. The generator exhaust system becomes extremely hot during operation and remains hot for a long time after it has shut down. 2.7 OPERATING PRECAUTIONS Never operate the motor home generator set while the vehicle is parked over dry leaves, dry grass or any other combustible substance. The generator’s exhaust system becomes extremely hot and can cause a fire if it is too close to combustible materials. 2.8 FUEL REQUIREMENTS (LP UNITS) These generators are equipped with a liquefied petroleum (LP) gas fuel system. LP gas is usually supplied as a liquid in pressure tanks. These generators require a “vapor withdrawal” type fuel system. This type of gaseous fuel system uses the vapors forming above the liquid fuel in the storage tank. Air temperature around the storage tank must be high enough to sustain adequate fuel vaporization. In colder climates, use of an independent heat source may be needed to be sure the fuel sufficiently vaporizes in the storage tank. LP gas may consist of propane, butane or a mixture of the two gases. Propane vaporizes at temperatures as low as -20°F (-29°C), but butane returns to its liquid state when the temperature drops below about 32°F (0°C). For that reason, a higher ratio of propane is desired in the gas mixture when temperatures drop below freezing. FUEL CONSUMPTION (IN GALLONS PER HOUR): 2.9 LOAD LP NO HALF FULL 0.20 0.41 0.77 ENGINE OIL REQUIREMENTS The recommended oils include the following: • During summer months: SAE 30. An acceptable substitute is SAE 10W-30. • During winter months: SAE 5W30. DO NOT USE SAE 10W-40. Crankcase and oil filter capacity is about 950ml or one (1) quart. Use no special additives. See “Maintenance” section for oil level check and fill procedures. 2.10 LP GENERATOR SPECIFICATIONS Model ..............................................Impact-36LPG plus II Rated Maximum Continuous AC Power Output ..............................3400 watts (3.4 kW) Rated Voltage ................................................120 volts AC Rated Maximum Continuous Current at 120 volts................................28.3 AC amperes Phase ............................................................Single Phase Rated AC Frequency ................................................60 Hz. Recommended Battery Cranking Current ..............................................400 amps Gross Weight ............................................................99 lbs Maximum Cranking Current..............................250 Amps Maximum Charging Current ..................................2 Amps 2.11 ENGINE SPECIFICATIONS Type of Engine ......................................................GN-220 Cooling Method ..................................................Air-cooled Displacement............................................................220cc Type of Governor ..............................................Electronic Air Cleaner ..................................................Paper element Starter ..................................................12 volt DC electric Ignition System ................................................Solid state Recommended Spark Plugs ................Champion RC14YC Spark Plug Gap ..................................0.030 inch (0.8mm) Generac® Power Systems, Inc. 9 Section 3 – Maintenance IMPACT-36 plus II Recreational Vehicle Generator 3.1 MAINTENANCE This section includes information about simple maintenance which includes the following tasks: • • • • • Checking engine oil level. Changing engine oil. Changing oil filter. Air cleaner maintenance. Cleaning the air intake screen. Cleaning spark arrestor. • Cleaning spark plug. Replacing fuel filter. Servicing inverter. 3.2 CHECKING ENGINE OIL LEVEL Check engine crankcase oil level at least every eight hours of operation, or before each use (Figure 3.1). • Be sure the generator is as level as possible. • Remove oil dipstick and wipe dry with clean, lintfree cloth. • Install and tighten oil dipstick, then remove again. • Oil should be at dipstick FULL mark. If necessary, add the recommended oil to the FULL mark only. DO NOT FILL ABOVE “FULL” MARK. • Install and tighten oil dipstick cap before operating the engine. Figure 3.1 — Oil Dipstick and Fill Tube 3.3 CHANGE ENGINE OIL Change engine oil after the first 25 hours of operation. Thereafter, change oil every 100 operating hours. Change oil more frequently if operating consistently under heavy load or at high ambient temperatures. • Warm up engine for at least five minutes, then shut down. • With engine still warm from running, clean area around oil drain plug and remove oil drain plug (Figure 3.2). Drain oil completely into a suitable container. • When oil has drained, install and tighten drain plug. • Remove oil dipstick and fill crankcase with the recommended oil (See Page 11). The engine crankcase can hold about 1 quart (950ml). DO NOT FILL ABOVE “FULL” MARK. • Install and tighten dipstick cap before operating engine. 3.4 CHANGE OIL FILTER Replace the engine oil filter after the first 25 hours of operation, every 100 operating hours thereafter. • Turn oil filter counterclockwise to remove (Figure 3.2). Figure 3.2 — Oil Drain Plug and Engine Oil Filter Oil Dipstick and Fill Tube NOTE: See “Engine Oil Requirements”, Section 2.9 for recommended oils. • Coat gasket of new filter with engine oil. • Turn new filter clockwise until its gasket contacts lightly with the filter adapter. Then tighten an additional 3/4 to one turn by hand. • Run engine and check for leaks. NOTE: Check oil level and fill to full mark after checking for leaks. Filter will retain some oil. 10 Generac® Power Systems, Inc. Section 3 – Maintenance IMPACT-36 plus II Recreational Vehicle Generator 3.5 ENGINE AIR CLEANER Paper Filter: Once every 25 operating hours or once each year (whichever comes first), clean or replace the paper filter (Figure 3.3). Follow the steps on page 12. 3.7 ENGINE SPARK PLUG Clean engine spark plug and set gap to 0.030 inch (0.76mm) every 100 hours of operation (Figure 3.5). Clean by scraping or wire brushing and washing with commercial solvent. DO NOT BLAST CLEAN SPARK PLUG. Figure 3.3 — Engine Air Cleaner Assembly Figure 3.5 — Setting Gap on Spark Plug • Remove air cleaner cover, then remove paper filter. • Clean air filter by gently tapping it on a solid surface. If the filter is too dirty, replace it with a new one. Dispose of the old filter properly. • Clean air cleaner cover then insert new paper filter into cover and assemble to the base of the air cleaner. 3.6 ! 3.8 Sparking can occur if wire terminal does not fit firmly over spark plug terminal end. If necessary, reform wire terminal to obtain a tight fit. INVERTER All repairs of the inverter must be handled by an authorized service dealer (see Figure 3.7). Figure 3.7 — Inverter Warning Label CLEAN AIR INTAKE SCREEN Clean all foreign material from the air intake screen (Figure 3.4) at lease once every 100 hours of operation. Clean more often if necessary. Inspect the area around the generator exhaust muffler periodically and remove all grass, leaves, dirt, etc. from this area. Figure 3.4 — Clean Air Intake Screen Air Intake Screen 3.9 CLEANING THE GENERATOR Keep the generator set as clean and dry as possible. Dirt and moisture that are permitted to accumulate on electrical windings have an adverse affect on the insulation resistance of those windings. Moisture that is allowed to remain in contact with windings will be retained in voids and cracks of the windings. Dirt makes the problem worse, since it tends to hold the moisture into contact with the windings. Salt, as from sea air, worsens the problem since it tends to absorb moisture from the air. The combination of salt and moisture makes a good electrical conductor. Generac® Power Systems, Inc. 11 Section 3 – Maintenance IMPACT-36 plus II Recreational Vehicle Generator 3.11 SERVICE AND ADJUSTMENTS ! Do NOT use a forceful spray of water to clean the generator. Water will enter the generator interior and cause problems, and may also contaminate the generator fuel system. 3.10 BATTERY All lead-acid storage batteries will discharge when not in use. Inspect the generator battery as follows: ◆ 3.10.1 ONCE WEEKLY Inspect battery posts and cables for tightness, corrosion. Clean and/or tighten as necessary. Also check battery fluid level, and, if necessary, fill with DISTILLED WATER ONLY. DO NOT USE TAP WATER IN BATTERY. ◆ 3.10.2 EVERY SIX MONTHS Have the battery state of charge and condition checked by an automotive service facility. This should be done with an automotive type battery hydrometer. DANGER Storage batteries give off explosive hydrogen gas. This can form an explosive mixture around the battery for several hours after charging. The slightest spark can ignite the gas and cause an explosion. Such an explosion can shatter the battery and cause blindness or other injury. Any area that houses a storage battery must be properly ventilated. Do not allow smoking, open flame, sparks or any spark producing tools or equipment near the battery. ! ! Battery electrolyte fluid is an extremely caustic sulfuric acid solution that can cause severe burns. Do not permit fluid to contact eyes, skin, clothing, painted surfaces, etc. Wear protective goggles, protective clothing and gloves when handling a battery. If fluid is spilled, flush the affected area immediately with clear water. Do not use any jumper cables or booster battery to crank and start the generator engine. If any battery has discharged, remove it from the vehicle for recharging. 12 Generac® Power Systems, Inc. ◆ 3.11.1 ENGINE SPEED Engine speed is completely computer-controlled. There is no adjustment for speed on the unit. The computer adjusts the engine speed using an electronic governor throttle control. The computer monitors the demand for power and adjusts the engine speed accordingly. This allows the engine to produce only the power required, resulting in fuel economy as well as lowering the overall noise emitted. NOTE: The computer will disable the electrical load capabilities of the generator and enter a fault condition if the throttle is accelerated manually or any other way. 3.12 ADJUSTING THE CARBURETOR The carburetor of the generator is preset at the factory. The carburetor should not be tampered with, as this will void the emission control system warranty. If the generator is used at altitudes in excess of 5,000 feet, consult the Generac Authorized Service Facility regarding high altitude jetting changes. 3.13 ADJUSTING VALVE CLEARANCE After the first 50 hours of operation, adjust the valve clearance in the engine. When adjusting valve clearance, the engine should be at room temperature and the piston should be at Top Dead Center (TDC) of its compression stroke (both valves closed). Correct clearance is 0.001-0.003 inch (0.03-0.07mm). Adjust valve clearance as follows: 1. Loosen the rocker arm jam nut. Use an allen wrench to turn the pivot ball stud while checking clearance between the rocker arm and the valve stem with a feeler gauge (Figure 3.8). Figure 3.8 — Adjusting Valve Clearance Section 3 – Maintenance IMPACT-36 plus II Recreational Vehicle Generator 2. When valve clearance is correct, hold the pivot ball stud with the allen wrench and tighten the rocker arm jam nut with a crows foot. Tighten the jam nut to 65-85 inch-pounds torque. After tightening the jam nut, recheck valve clearance to make sure it did not change (Figure 3.9). Figure 3.9 — Tightening Jam Nut 3.16 OUT OF SERVICE PROTECTION If the generator cannot be exercised every seven days, and it is to be out of service longer than 30 days, prepare the generator for storage as follows: • Start the engine and let it warm up. • While the engine is still warm from running, drain the oil completely. Refill crankcase with recommended oil. See “Specifications.” • Attach a tag to the engine indicating the viscosity and classification of the oil in the crankcase. • Remove spark plug and add about 1/2 ounce (15ml) of clean, fresh engine oil into spark plug threaded opening. Crank engine several times to distribute oil, then install and tighten spark plug. • Remove the battery and store in a cool, dry room on a wooden board. Never store the battery on any concrete or earthen floor. • Clean and wipe the entire generator. 3.17 RETURN UNIT TO SERVICE AFTER STORAGE To return the unit to service after storage, proceed as follows: 3.14 MAJOR SERVICE MANUAL To obtain a service manual for the generator, order it from the dealer/distributor. Be sure to identify the unit’s MODEL NUMBER and SERIAL NUMBER. 3.15 EXERCISING THE GENERATOR Generac recommends that the generator is started and operated at least once every seven days. Let the unit run for at least 30 minutes to “exercise” the engine. • Check tag on engine for oil viscosity and classification. Verify that the correct recommended oil is used in engine. If necessary, drain and refill with proper oil. • Check battery. Fill all cells to the proper level with distilled water. DO NOT USE TAP WATER IN THE BATTERY. Recharge battery to 100% state of charge, or, if defective, replace the battery. • Turn OFF all electrical loads, then start the engine. • Let engine warm up. • Apply electrical loads up to at least 50% of the unit’s rated wattage capacity. • When engine is thoroughly warmed up, shut it down. THE GENERATOR IS NOW READY FOR SERVICE. Generac® Power Systems, Inc. 13 Section 4 – Notes IMPACT-36 plus II Recreational Vehicle Generator 14 Generac® Power Systems, Inc. PART II – INSTALLATION INSTRUCTIONS DANGER ONLY QUALIFIED ELECTRICIANS OR CONTRACTORS SHOULD ATTEMPT INSTALLATION!! Safety Rules IMPACT-36 plus II Recreational Vehicle Generator ! DANGER: For fire safety, installation of a generator into a recreational vehicle must comply strictly with NFPA 70 (latest edition), “National Electrical Code”, Article 551, and NFPA 1192 (latest edition), “Standard for Recreational Vehicles”. In addition, installation must comply with the manufacturer’s instructions and recommendations. NOTICE TO INSTALLER These Installation Instructions have been published by Generac to aid in the installation of the products described in this manual. Generac assumes that installation personnel are familiar with the procedures for installing such products, or similar products that Generac manufactures. Generac also assumes that personnel have been trained in the recommended installation procedures for these products and that such training includes (a) use of common hand tools, (b) use of special Generac tools, and (c) use of any tools and/or equipment from other suppliers. Generac cannot possibly know of, nor advise the recreational vehicle trade of, all conceivable methods, procedures, or techniques by which to perform an installation. Nor can Generac anticipate every possible hazard that might result from each installation method, procedure, or technique. Generac has not undertaken any such wide evaluation. Therefore, people who use a method, procedure, or technique that Generac does not specifically recommend must first completely satisfy themselves that their safety, the safety of the vehicle's occupants, and the product's safety are not endangered by the method, procedure, or technique selected. Information, illustrations, specifications, etc., contained in these Installation Instructions are based on the latest information available at the time of publication. Every effort has been expended to be sure that such data are both accurate and current. However, the manufacturer reserves the right to change, alter, or otherwise improve this product at any time, without prior notice. DANGER ! Despite the safe design of this generator, operating this equipment imprudently, neglecting its maintenance, or being careless can cause possible injury or death. Permit only responsible and capable persons to operate or maintain this equipment. ! Parts of the generator are rotating and/or hot during operation. Exercise care near running generators. Potentially lethal voltages are generated by these machines. Ensure all steps are taken to render the machine safe before attempting to work on the generator. 16 Generac® Power Systems, Inc. ! ! GENERAL HAZARDS ! • For safety reasons, Generac recommends that the installation, initial startup, and maintenance of this equipment is carried out by a Generac Authorized Service Dealer. • The engine exhaust fumes contain carbon monoxide, which can be DEADLY. This dangerous gas, if breathed in sufficient concentrations, can cause unconsciousness or even death. This exhaust system must be installed properly, in strict compliance with applicable codes and standards. Following installation, do nothing that might render the system unsafe or in noncompliance with such codes and standards. The generator compartment must be completely vapor-sealed from the vehicle interior. There must be no possibility of exhaust fumes entering the vehicle interior. Never operate this equipment with a leaking or defective exhaust system. • Keep hands, feet, clothing, etc., away from drive belts, fans, and other moving or hot parts. Never remove any drive belt or fan guard while the unit is operating. • Adequate, unobstructed flow of cooling and ventilating air is critical to correct generator operation and is required to expel toxic fumes and fuel vapors from the generator compartment. Without sufficient cooling airflow, the engine/generator quickly overheats, which causes serious damage to the generator. Do not alter the installation or permit even partial blockage of ventilation provisions, as this can seriously affect safe operation of the generator. • When working on this equipment, remain alert at all times. Never work on the equipment when physically or mentally fatigued. • Before performing any maintenance on the generator, disconnect its battery cables to prevent accidental startup. First, disconnect the cable from the battery post, indicated by a NEGATIVE, NEG, or (–). Reconnect that cable last. • Never use the generator or any of its parts as a step. Stepping on the unit can stress and break parts, and may result in dangerous operating conditions from leaking exhaust gases, fuel leakage, oil leakage, etc. • Never insert any tool or other object through openings in the generator interior, even if the unit is not running. Seriouse injury or damage to the equipment may occur. Safety Rules IMPACT-36 plus II Recreational Vehicle Generator ELECTRICAL HAZARDS FIRE HAZARDS • The generator covered by this manual produces dangerous electrical voltages that can cause fatal electrical shock. Avoid contact with bare wires, terminals, connections, etc., while the unit is running. Ensure all appropriate covers, guards, and barriers are in place before operating the generator. If work must be done around an operating unit, stand on an insulated, dry surface to reduce shock hazard. • Do not handle any kind of electrical device while standing in water, while barefoot, or while hands or feet are wet. DANGEROUS ELECTRICAL SHOCK MAY RESULT. • During installation onto the vehicle, properly ground (bond) the generator either by solid mounting to the vehicle frame or chassis, or by means of an approved bonding conductor. DO NOT connect the bonding conductor to any generator part that might be removed or disassembled during routine maintenance. If the grounding conductor must be replaced, use only a flexible conductor that is of No. 8 American Wire Gauge (AWG) copper wire minimum. • If the vehicle electrical circuits can be powered by any other source of electricity (such as, a “dockside” power receptacle), there must be no possibility of connecting the different power sources to the vehicle’s circuits at the same time. The dockside (utility) power source must be positively isolated from the vehicle’s circuits whenever the generator is operating. Failure to isolate the vehicle’s circuits from the dockside power supply when the generator is running may result in damage to the generator or in serious injury or death to dockside (utility) power workers due to backfeed of electrical energy. • In case of an accident caused by electric shock, immediately shut down the source of electrical power. If this is not possible, attempt to free the victim from the live conductor. AVOID DIRECT CONTACT WITH THE VICTIM. Use a nonconducting implement, such as, a rope or board, to free the victim from the live conductor. If the victim is unconscious, apply first aid, and get immediate medical help. • Never wear jewelry when working on this equipment. Jewelry can conduct electricity, resulting in electric shock, or may get caught in moving components, causing injury. • For fire safety, the generator must be installed and maintained properly. Installation always must comply with applicable codes, standards, laws, and regulations. Adhere strictly to local, state and national electrical and building codes. Comply with regulations the Occupational Safety and Health Administration (OSHA) has established. Also, ensure that the generator is installed in accordance with the manufacturer’s instructions and recommendations. Following proper installation, do nothing that might alter a safe installation and render the unit in noncompliance with the aforementioned codes, standards, laws, and regulations. • Keep a fire extinguisher in the vehicle at all times. Extinguishers rated “ABC” by the National Fire Protection Association are appropriate for use on the recreational vehicle generator electrical system. Keep the extinguisher properly charged, and be familiar with its use. If there are any questions pertaining to fire extinguishers, consult the local fire department. EXPLOSION HAZARDS • Do not smoke around the generator. Wipe up any fuel or oil spills immediately. Ensure that no combustible materials are left in the generator compartment, or on or near the generator, as FIRE or EXPLOSION may result. Keep the area surrounding the generator clean and free from debris. • All fuel types are potentially FLAMMABLE and/or EXPLOSIVE and should be handled with care. Comply with all laws regulating the storage and handling of fuels. • Fuel supply lines must be properly installed, purged and leak-tested according to applicable fuel-gas codes, before placing this equipment into service. There must be no possibility of fuel vapors entering the vehicle interior. • It is required to install an approved, flexible, nonconductive fuel line between the generator fuel connection point and the rigid fuel lines. Generac® Power Systems, Inc. 17 Section 1 – General Information IMPACT-36 plus II Recreational Vehicle Generator 1.1 PURPOSE AND SCOPE OF THE MANUAL These Installation Instructions have been prepared especially for the purpose of familiarizing installers and owners of the applicable equipment with the product's installation requirements. Give serious consideration to all information and instructions in the manual, both for safety and for continued reliable operation of the equipment. Because of the different recreational vehicle models and the variations between the models, it would be extremely difficult, if not impractical, to provide detailed instructions for every possible installation. For that reason, instructions and illustrations in this manual are general in nature. Illustrations are not intended to serve as detailed installation blueprints. The installation should comply strictly with all applicable codes, standards, and regulations pertaining to the installation and use of this product. If any portion of this manual appears to be in conflict with such codes, standards, or regulations, the applicable codes, standards, or regulations must take precedence over the manual. 1.2 SAFETY Before handling, installing, operating, or servicing this equipment, carefully read the “Notice to Installer” and “Safety Rules” on Pages 18 and 19. Comply with all safety rules to prevent death, personal injury, or damage to equipment and/or property. Stress safety to all installers, operators, and service technicians who work on this equipment. 1.3 STANDARDS BOOKLETS Installation, use, and servicing of this equipment should comply strictly with published standards, as well as the manufacturer's recommendations. The following standards booklets (latest revision) are available from the sources indicated: 1. NFPA 1192, “Standard for Recreational Vehicles” (replaces ANSI A119.2/NFPA 501C), available from the National Fire Protection Association, Batterymarch Park, Quincy, MA 02269. 18 Generac® Power Systems, Inc. 2. NFPA 70, “NFPA Handbook of the National Electric Code,” available same as Item 1. 3. ANSI/RVIA EGS-1, “Engine Generator Sets for Recreational Vehicle Safety Requirements”, avaialable from the Recreational Vehicle Industry Association, 1896 Preston White Drive, Reston, VA 22090. 4. California Administrative Code, Title 25, available from the State of California, Documents Section, P.O. Box 1015, North Highlands, CA 95660. 5. CSA Electrical Bulletin 946, available from the Canadian Standards Association, Housing and Constructions Materials Section, 178 Rexdale Boulevard, Rexdale, Ontario, Canada, M9W 1R3. 1.4 EQUIPMENT DESCRIPTION Instructions and information in this section pertain to Generac Impact air-cooled generators — more specifically, the installation of Impact-34 plus II and IMPACT-36 plus II Recreational Vehicle Generators. These generators are designed specifically for installing in recreational vehicles. 1.5 ENGINE GENERATOR OPERATING SPEED The generators are driven by gasoline-powered, single-cylinder engines. The engines drive revolving fields (rotors), high frequency, permanent magnet alternators. The generators supply 120 volts AC at 60 Hertz with DC inverter. The generators revolving fields are driven at a variable speed depending on the demand for power. Computers monitor that demand and adjust the engine speed to provide adequate power to the connected loads. Section 2 – Installation IMPACT-36 plus II Recreational Vehicle Generator 2.1 LOCATION AND SUPPORT ◆ 2.1.1 GENERATOR LOCATION The most desirable location for the generator set is between the vehicle's main frame members However, this is seldom possible. Most units must be installed on the side of the vehicle and are difficult to reinforce. • If the generator cannot be bolted directly to the supporting frame or support tubing, consider using additional tubing, angle brackets or other supports to give the supporting frame sufficient strength. Figure 2.1 —Typical Horizontal Support Frame Many recreational vehicles have been factory equipped with an area for the generator set. Some vehicles may even have a generator compartment, provided by the vehicle manufacturer. Plan the generator location based on the following: • The generator set must be installed on a framework that is part of the recreational vehicle, as outlined in the paragraph entitled “Generator Support.” • The location must provide an access opening that is large enough to permit generator removal (unless the generator is to be removed from underneath the supporting framework. • The location must provide easy access to frequently serviced components, such as filters, oil drains, spark plugs and other common maintenance parts. • The location must provide sufficient room to allow minimum clearance of at least 1 inch between all sides and 1-1/2 inches on top of the generator. If sound insulation is to be used on compartment walls and ceiling, the minimum recommended applies to the space between the generator and such insulation. • The location must provide adequate cooling and ventilating air flow for the generator without a great deal of work and expense. ◆ 2.1.2 GENERATOR SUPPORT The generator must be securely attached to a metal framework that has been made part of the vehicle frame structure by bolting or welding. The metal framework on which the generator will rest and which will restrain the generator set should consist of at least two horizontal beams. These beams should consist of (a) 1-1/2 inch square, 11 gauge steel tubing OR (b) 1-1/2 inch, 11 gauge angle iron. A typical supporting frame with horizontal support tubing, is shown in Figure 2.1. ◆ 2.1.3 SUSPENDED MOUNTING If the generator will be suspended below the horizontal support tubing, the suspension method used with the vehicle frame members must have the following: (a) be able to support the weight of the generator; and (b) provide sufficient restraint for the generator. One typical suspended mounting system is shown in Figure 2.2. The location of a suspended mounting system must be carefully planned, keeping the following general rules in mind: • Protect the generator against road splash and debris. Baffles or splash guards may be required to protect certain areas of the generator. To make sure the generator is adequately protected, road test the installation through mud, water and slush. Figure 2.2 — Typical Suspended Mounting System The generator can be installed so that it sits on top of the horizontal support tubing, if the vehicle design permits. Another method is to suspend the generator below the horizontal support tubing by means of suitable, structurally sound metal framework. The following general rules apply: • Vehicle construction MUST be capable of supporting the weight of the generator. • Whether the generator is mounted above the horizontal support tubing or suspended below the tubing, the supporting frame used must be structurally sound. • The installer must make certain that selected location will permit adequate cooling and ventilating air flow to be supplied. Generac® Power Systems, Inc. 19 Section 2 – Installation IMPACT-36 plus II Recreational Vehicle Generator ◆ 2.1.4 GENERATOR RESTRAINT Use four 5/16"-18 hardened steel bolts (Grade 5) to fasten the generator to the supporting frame or the support tubing. These bolts must pass through (a) the generator mounting base, (b) the compartment floor, if a compartment is used, and (c) the supporting framework (Figure 2.3). All bolts must be long enough so that when tight, at least 3 threads are visible past the retaining lock nuts. Refer to “COMPARTMENT” section for location of generator mounting holes. Figure 2.3 — Typical Generator Restraint 2.2 GENERATOR COMPARTMENTS The generator set may or may not be installed inside a compartment that is constructed specifically for housing a generator. This section applies to generator compartments when they are installed. The following general rules apply to compartments: • The generator compartment should be either constructed of, or lined with, 26 gauge galvanized steel. IMPORTANT: ALUMINUM IS NOT AN ACCEPTABLE ALTERNATIVE TO GALVANIZED STEEL, DUE TO ALUMINUM'S LOW MELTING POINT. • If the compartment is lined with galvanized steel, it may be constructed of any material. Generac recommends that the compartment be constructed of 1/2-inch thick plywood, with the floor made of a double thickness of plywood for added strength. • All seams, splices and joints of the compartment walls (unless vapor tight by design) should be caulked. IMPORTANT: CAULKING MUST BE DONE SO THAT THE CAULKING MATERIAL WILL STAY IN PLACE PERMANENTLY. PRESSING SUCH MATERIALS AS PUTTY TAPE ONTO JOINTS AND SEAMS WILL NOT MEET THAT REQUIREMENT. A HIGH QUALITY SILICONE RUBBER SEALANT IS RECOMMENDED. • Holes and openings through the compartment walls for passage of electrical conduit, conductors, etc, into vehicle living area must be sealed vaportight with silicone rubber base sealant. • If using flexible metal conduit, seal the conduit at the end where it terminates inside the junction box. Flexible metal conduit is NOT vapor tight along its entire length. • Seams and joints of the galvanized steel (whether used as a liner or the compartment itself) must be lapped and mechanically secured. Such seams may be manufactured, welded, bolted, riveted, or screwed. Manufactured lock seams are shown in Figure 2.4. Figure 2.4 — Types of Lock Seams 20 Generac® Power Systems, Inc. Section 2 – Installation IMPACT-36 plus II Recreational Vehicle Generator ◆ 2.2.1 COMPARTMENT SIZE Plan the compartment size carefully. Provide a minimum of at least 1 inch (2” recommended) of clearance between the generator and compartment walls and 1 inch (2” recommended) of clearance between the generator and the ceiling AFTER the compartment has been lined with metal, and AFTER sound insulation has been installed (Figure 2.5). NOTE: Refer to the “Major Features and Dimensions” drawing in the back of this manual. Figure 2.5 — Provide Clearance Around Generator • Line the entire compartment interior with 26 gauge galvanized steel as described above. • Line the exterior (underside) of the compartment floor with 26 gauge galvanized steel. • Vapor seal all compartment seams and joints, to prevent poisonous, flammable or explosive vapors from entering the vehicle interior. Refer to the sealant information as noted previously. NOTE: Silicone rubber base sealant is an acceptable caulking material. Pressing putty tape onto compartment joints and seams is NOT acceptable. • After the compartment has been metal lined and vapor sealed, line the compartment interior walls and ceiling with an approved, non-flammable sound insulating material. See “Sound Insulating Materials.” DANGER ◆ 2.2.2 COMPARTMENT CONSTRUCTION • The generator compartment should be constructed of 1/2 inch thick plywood. Make the compartment floor a double thickness of 1/2 inch plywood with the grain of the wood at cross section for added strength (Figure 2.6). Figure 2.6 — Typical Compartment Construction Do not install sound insulation or any absorbent material on the compartment floor interior. Such materials will become soaked with combustible or explosive vapors and liquids and will become a fire hazard. • Openings in compartment walls for passage of electrical conduit, conductors, hoses, cables, etc., must be made vapor tight with suitable caulking material. • Flexible conduit must be sealed internally at the end where it terminates inside a compartment's electrical junction box. NOTE: The preceding is required because flexible conduit, due to its unique construction, is not vaportight along its entire length. DANGER Do not install any flammable material directly above or around the compartment. Heat, transferred through the compartment structure, may be sufficient to ignite, char or discolor seat cushions, fiberboard and other flammable materials. Use approved non-flammable insulating materials in high temperature areas. Generac® Power Systems, Inc. 21 Section 2 – Installation IMPACT-36 plus II Recreational Vehicle Generator ◆ 2.2.3 SOUND INSULATING MATERIALS ◆ 2.2.4 COMPARTMENT FLOOR CUTOUTS Once installers have determined that compartments are properly constructed and metal lined, they can add acoustical material. This may include additional sealant or insulating material, to reflect noise away from the vehicle interior. Provide openings in the generator compartment for the following items (Figure 2.7): Sound insulating materials should be of a non-flammable type. One excellent insulating material is a 1 inch thick fiberglass having a 2-pound density. When fiberglass is used, its coated side should face toward the compartment interior. Using a combination of sound insulating materials can often reduce noise more effectively than a single material. For example, a sheet of lead or visco-elastic material, along with a layer of other acoustical material, is more effective than when a single material is used. • Engine exhaust and cooling air outlets • Generator cooling air inlet • Four holes for passage of generator mounting bolts. See “Generator Restraint” on Page 19. DANGER ! Fuel lines and exhaust piping must not penetrate into vehicle living area. Figure 2.7 – Compartment Floor Cutout (0A6203-A) 22 Generac® Power Systems, Inc. Section 2 – Installation IMPACT-36 plus II Recreational Vehicle Generator ◆ 2.2.5 ACOUSTICS If excessive noise levels should become a problem, the installer may wish to consider the following: • Using special sound insulating materials. • Construction of a special noise abatement compartment. IMPORTANT: ANY METHOD USED TO REDUCE NOISE MUST NOT ADVERSELY AFFECT THE FLOW OF COOLING AND VENTILATING AIR INTO OR OUT OF THE COMPARTMENT. In addition to the effective use of sound insulating materials, construction of a special noise abatement compartment might be considered to reduce noise levels. Such a compartment might be constructed as follows (Figure 2.8): • Use 5/8-inch thick or 3/4-inch thick plywood in the compartment. • Construct the compartment floor of a double thickness of 5/8-inch or 3/4-inch plywood. • Line the compartment interior walls and floor, as well as the underside of the floor, with 26-gauge galvanized steel. • Vapor seal all compartment seams and joints. • Over the galvanized steel lining, install a selected combination of acoustical materials as mentioned in “Sound Insulating Materials.” Figure 2.8 — Typical Noise Abatement Compartment • Line the compartment door interior (except for air openings) with suitable, fire proof sound insulation (such as 1-inch thick fiberglass with a 2pound density). It is absolutely essential that an adequate flow of air for cooling, ventilating and engine combustion be supplied to the generator set. Without sufficient air flow, the engine-generator quickly overheats. Such overheating can cause serious operating difficulties and may also cause fire and personal injury. The installer must make sure that sufficient air is available to the generator for cooling, ventilating and combustion. The installer must also provide for a path for exhausting the cooling air to the exterior of a compartment, if so equipped. DANGER Never use discharged cooling air for heating or permit such air to enter the vehicle interior. This air contains deadly carbon monoxide gas and other poisonous, flammable or explosive gases. 2.3 COOLING AND VENTILATING AIR ◆ 2.3.1 GENERATOR AIR FLOW Engine operation drives cooling fans for the 2-stage cooling air system. A pressure fan draws cooling air into the top of generator and into the side of the control panel (Figure 2.9). This air flow cools the enginegenerator and electronic components. The second part of the cooling system, a suction fan, draws air that is heated from a hot engine into a collector pan at the base of the unit. This heated air (although cooler than exhaust muffler) is directed across the muffler to cool it. The heated air flow is then deflected out the bottom toward the ground. Figure 2.9 — Air Flow Through EngineGenerator DANGER Do not install any insulation or other absorbent materials on the interior or underside of the compartment floor. • Seal all compartment door edges to prevent noise leakage around the door perimeter. ! Generac® Power Systems, Inc. 23 Section 2 – Installation IMPACT-36 plus II Recreational Vehicle Generator ◆ 2.3.2 COOLING AIR INLET OPENINGS Figure 2.11 — Suspended Mount Inlet Door Provide three air inlet openings, whether the generator is housed in a conventional compartment or not. Two of the openings should be 10 square inches and located as shown in Figure 2.10. The third opening should provide for a minimum of 40 square inches unrestricted and be located lower on the compartment door. NOTE: Screening, louvers, or expanded metal that cover air openings restrict air flow that must be compensated for by making the actual air opening proportionately larger. See “Compensating for Restrictions.” For conventional compartment mounted units, the air inlet is generally provided in the compartment door. • Using ductwork (Figure 2.12). The installer must be sure air is available to the top of the generator since air inlets are located at the top. Figure 2.12 — Air Inlet Using Ductwork Figure 2.10 — Air Inlet in Compartment Door 10 Square Inches (Optional Openings) 40 Square Inches (Minimum Opening) • By providing an opening in the vehicle skirt and space above the generator for cooling air flow (Figure 2.13). Recommended clearance above the top of the generator is at least 2 inches. Figure 2.13 — Air Inlet in Vehicle Skirt IMPORTANT: IF PLANNING TO INSTALL THE GENERATOR IN A COMPARTMENT, BE SURE TO LEAVE AT LEAST ONE INCH (2” recommended) OF CLEARANCE BETWEEN THE GENERATOR AND COMPARTMENT WALLS AND CEILING. INCLUDE 26 GAUGE GALVANIZED STEEL LINING AND SOUND INSULATION WHEN MEASURING FOR THIS 1 INCH (2” recommended) CLEARANCE. When the unit is installed on a suspended mounting system, one of several different methods of supplying air flow may be used as follows: • Provide a door in the vehicle skirt having an air inlet opening (Figure 2.11). 24 Generac® Power Systems, Inc. Section 2 – Installation IMPACT-36 plus II Recreational Vehicle Generator ◆ 2.3.3 COMPENSATING FOR RESTRICTIONS 2.4 Such materials as screening, louvers, or expanded metal can restrict the free flow of air. Compensate for this restriction by making the actual air opening proportionately larger. ◆ 2.4.1 PARTS NOT INCLUDED IN FUEL SYSTEM Some materials may offer only a 60 percent “free air inlet area.” Other more efficient materials may provide up to a 90 percent free air inlet area. The percentage of free air inlet opening is usually available from the material supplier or manufacturer. TO DETERMINE THE ACTUAL AIR INLET OPENING SIZE REQUIRED, DIVIDE 40 SQUARE INCHES BY THE PERCENTAGE OF FREE AIR INLET AREA FOR THE MATERIAL USED. PROPANE GAS FUEL SYSTEM The propane fuel system does NOT include such items as (a) gas tank, (b) gas piping, (c) fittings, (d) valves, and (e) primary regulator, used to store the gaseous fuel and deliver it to the gaseous fuel solenoid (Figure 2.15). Figure 2.15 — Diagram of LP Gas System For example: If planning to use screening with an 80% free air inlet area, divide 40 by 0.8, which results in 50 square inches. Minimum actual size of air inlet opening in this case is 50 square inches. An opening that measures 4 inches wide by 12-1/2 inches long provides the required air flow (4 x 12.5 = 50 square inches). ◆ 2.3.4 INVERTER LOCATION The inverter should be located in a dry, well ventilated area in order for the inverter to work effectively. Approximately eight inches of space should be allowed at each end of the inverter for adequate ventilation. IT SHOULD NOT BE LOCATED IN THE SAME COMPARTMENT AS THE GENERATOR. The sensing harnesses supplied with the inverter have a maximum length of 12 feet. If the cables are longer than needed, coil the excess near the inverter unit. If a greater length is needed, contact Generac. DO NOT ATTEMPT TO SHORTEN OR LENGTHEN THE SUPPLIED sensing harnesses. The DC power wires may be cut to the required length. Allow enough length to make connection. Coil excess inside J-Box. ◆ 2.3.5 TESTING THE INSTALLATION Generac recommends testing the installation to be sure adequate cooling air flow is available to the unit before placing the unit into service. If the unit shows signs of overheating, enlarge the air openings. Never place a unit into service until absolutely certain that cooling and ventilation is adequate. IMPORTANT: TEST THE INSTALLATION, ESPECIALLY IF BRINGING IN AIR FROM BELOW THE GENERATOR SET. DANGER Use only approved components in the gas supply system. All components must be properly installed in accordance with applicable codes. Improper installation or use of unauthorized components may result in fire or an explosion. Follow approved methods to test the system for leaks. No leakage is permitted. Do not allow fuel vapors to enter the vehicle interior. Generac® Power Systems, Inc. 25 Section 2 – Installation IMPACT-36 plus II Recreational Vehicle Generator ◆ 2.4.2 SOME IMPORTANT CONSIDERATIONS When installing an LP gas system, consider seriously the following items: • All fittings, lines, hoses and clamps must be tight and free of leaks. Apply a pipe sealant to threads when assembling threaded connections. This reduces the possibility of leakage. Test the entire fuel system for leaks, using approved test methods. • Optimum gas pressure at the inlet to the gaseous fuel solenoid valve and secondary regulator is 11 inches water column. • The installer’s fuel supply connection point is at the gaseous fuel solenoid valve. This is a 3/4 inch (female) connection. Provide a suitable 3/4 inch NPT (male) connector to attach to the fuel supply line. • Use a length of approved flexible fuel hose between gaseous fuel solenoid valve and rigid gas piping. The flexible line should be at least six (6) inches longer than necessary. ◆ 2.4.3 VAPOR WITHDRAWAL Liquid propane (LP) gas is stored in pressure tanks as a liquid. The gas systems used with these generators were designed only for “vapor withdrawal” type systems. Vapor withdrawal systems use the gas vapors that form above the liquid fuel in the tank, Do NOT attempt to use the kit along with any “liquid withdrawal” type system. ◆ 2.4.4 PRIMARY REGULATOR Gas pressure delivered to the solenoid valve must be properly regulated by means of a primary gas regulator. Mount the primary regulator at the gas tank outlet or in the supply line from the gas tank, The following rules apply: • For best results, the primary regulator supplies gaseous fuel to the secondary regulator at 11 inches water column. Do NOT exceed 14 inches water column. • The installer must be sure the primary regulator is rated at sufficient gas flow to operate the generator plus all other gas appliances in the circuit. NOTE: Recommended MINIMUM gas flow rate for all aircooled Impact-34 plus II series generators is 67 cubic feet per hour. IMPORTANT: IF AN EXISTING PRIMARY GAS REGULATOR DOES NOT HAVE A SUFFICIENT FLOW CAPACITY FOR THE GENERATOR AND OTHER GAS APPLIANCES IN THE CIRCUIT, (a) INSTALL A PRIMARY REGULATOR WITH ADEQUATE FLOW RATE, OR (b) INSTALL A SEPARATE REGULATOR RATED AT LEAST 67 CUBIC FEET PER HOUR. THE INLET SIDE OF ANY PRIMARY REGULATOR THAT SUPPLIES THE GENERATOR MUST CONNECT DIRECTLY TO GAS TANK PRESSURE. DO NOT TEE THE GENERATOR LINE INTO A GAS CIRCUIT FEEDING OTHER APPLIANCES. ◆ 2.4.5 GASEOUS CARBURETION LP gas vapors should be supplied to the generator regulator inlet at about 11 inches water column (positive pressure). The engine piston draws air in during the intake stroke (Figure 2.16). This air passes through a carburetor venturi which creates a low pressure that is proportional to the quantity of air being pumped. The low pressure from the carburetor venturi acts on the regulator diaphragm, to pull the diaphragm toward the source of low pressure. A lever attached to the diaphragm opens a valve to permit gas flow through the carburetor. The greater the air flow through the carburetor venturi, the lower the pressure at the venturi throat, the greater the diaphragm movement and the greater the movement of the regulator valve. The more the regulator valve opens, the greater the gas flow that is proportional to air flow through the carburetor. The following facts about the secondary regulator must be emphasized: Figure 2.16 — Propane Gas Carburetion Diagram 26 Generac® Power Systems, Inc. Section 2 – Installation IMPACT-36 plus II Recreational Vehicle Generator • The regulator must be sensitive to venturi throat pressure changes throughout the operating range. • The regulator must be properly adjusted so it will stop the flow of gas when the engine is not running (no air flow through the carburetor). • The slightest air flow (and vacuum) in the venturi throat should move the regulator valve off its seat and permit gas to flow. DANGER Gaseous fuel lines between the tank and the secondary regulator are under a positive pressure (about 11 inches water column). Gas pressure at the outlet side of the secondary regulator, however, is a negative pressure (about 1-inch water column) and can draw flame inside a line or fitting and cause an explosion. ◆ 2.4.6 FUEL SUPPLY LINES • Propane gas lines must be accessible, but protected against possible damage. • Do NOT connect electrical wiring to any propane gas fuel line or run wiring alongside the lines. • Route gas lines away from hot engine exhausts. • Retain gas lines with metal clamps that do not have sharp edges. • Install an approved length of flexible hose between the gaseous fuel solenoid valve and rigid fuel supply lines. The flexible line must be non-metallic, non-organic and non-conductive. It must be approved for use with LP gas. 2.5 ! ◆ 2.4.7 EXCESS FLOW VALVE Propane gas tanks should have an excess flow valve, according to NFPA 501C, Paragraph 3-4.4. This valve and the gas lines must be carefully sized so the valve will close when a fuel line is severed or broken. Consult the Natural-LP Gas Association for information and limitations of excess flow valves. Manual shutoff valves on the supply tank and elsewhere in the system must be fully open when operating the generator. The excess flow valve functions properly only if all valves are fully open. ◆ 2.4.8 LEAKAGE TESTS Do not place the generator into service until the gas system has been properly tested for leaks. To test the system, a separate source of 12 volts DC to open the gaseous fuel solenoid valve is needed. The leak test must comply fully with NFPA, Paragraph 318. All connections, hoses, valves, regulators, fitting, and other fuel system parts must be tested under gas or air pressure of not less than 90 psi (620kPa). while using soap and water or equivalent solution to check for leaks. Other approved methods of testing for leaks may be used, if appropriate. DO NOT USE ANY FLAME TO TEST FOR LEAKS. EXHAUST SYSTEM The generator exhaust system must be safely and properly installed. Only approved mufflers and other exhaust system parts must be used. A properly installed exhaust system must be vapor tight, quiet and completely safe. Never tee the generator engine exhaust pipe into the vehicle engine exhaust piping. This causes excessive back pressure on the generator engine. Also, water from one engine can damage the other engine. DANGER ! The generator engine gives off deadly carbon monoxide gas through its exhaust system. This dangerous gas, if breathed in sufficient concentrations, can cause unconsciousness or even death. Symptoms of carbon monoxide poisoning are (a) inability to think coherently, (b) vomiting, (c) twitching muscles, (d) throbbing in temples, (e) dizziness, (f) headache, (g) weakness and sleepiness. If any of these symptoms ar experienced, move into fresh air immediately. If symptoms persist, get medical attention. Do not operate the generator until its exhaust system has been inspected and repaired. ◆ 2.5.1 MUFFLERS AND SPARK ARRESTORS Exhaust mufflers and spark arrestors that Generac supplies meet code and standard requirements, and are approved by the U.S. Forest Service. Use only mufflers and parts approved by Generac. Any person(s) installing an unapproved muffler, or an unapproved exhaust system part, or modifying an exhaust system in any way that might cause a hazard, is liable for any damage, injury or warranty expense that might be caused by such unapproved installation or modification. Generac® Power Systems, Inc. 27 Section 2 – Installation IMPACT-36 plus II Recreational Vehicle Generator Failure to provide and maintain a spark arrestor may be in violation of the law. If this generator is used on any forest covered, brush covered, or grass covered unimproved land, provide a spark arrestor. The vehicle owner or operator must maintain this device in good condition. In the State of California, the preceding is required by law (Section 4442 of the California Public Resources Code). Other states may have similar laws. Federal laws apply on federal lands. ◆ 2.5.2 TYPE OF EXHAUST SYSTEM • The Impact-36 plus and Impact-34 plus II generators have a configuration for a bottom out exhaust system and is equipped with such an exhaust muffler (Figure 2.17). Figure 2.17 — Exhaust System Exhaust Muffler • Model 004283-0 Exhaust Adapter mates to the O.D. of the spark arrestor outlet of the muffler. It allows the use of 1-1/4” O.D. exhaust pipe to be clamped in place (Figure 2.18). Figure 2.18 — Exhaust Adapter ◆ 2.5.3 EXHAUST SYSTEM SAFETY • Maintain a clearance of at least 3 inches (76mm) between exhaust system parts and any combustible material (such as wood, felt, cotton, organic fibers or other like material). If the 3-inch clearance cannot be maintained, locate, insulate or shield the exhaust part(s) so that the temperature of any combustible material is not raised more than 117°F (65°C) above the ambient air temperature. • Extend the exhaust system at least one inch (25mm) past the outer edge of the vehicle. Do not terminate the exhaust system under the vehicle. • Terminate the exhaust tailpipe such that exhaust gases will not be drawn back into the generator compartment and recirculated. • If there is any possibility of the tailpipe or muffler being damaged, protect these damage prone areas by means of a protective device (such as a “skid bar”). • Install the generator exhaust system according to safe automotive practices. • Use enough exhaust system hangers to prevent any part of the system from being dislocated. • Use exhaust system parts recommended by Generac. Using unapproved exhaust mufflers and exhaust system parts is the responsibility of the person(s) installing such unauthorized parts. • Do not terminate the exhaust system under any opening, window or vent which can be opened or is not permanently sealed from the vehicle interior. • Exhaust piping must be large enough to prevent excessive back pressure on the generator engine. • Never tee the generator engine exhaust pipe into the vehicle engine exhaust piping. This causes excessive back pressure on the generator engine. Also, water from one engine can damage the other engine. • Plan exhaust system installation carefully. Comply with all applicable codes, standards and regulations. 2.6 ELECTRICAL CONNECTIONS The following general rules apply to electrical connections in a recreational vehicle: • Qualified electricians who are familiar with applicable codes, standards and regulations should install electrical wiring. • The wiring should comply with codes, standards and regulations. The National Electric Code (NFPA 70), as well as state and local codes, apply. • Switches and circuit breakers should be of a type approved for use in recreational vehicles and must be mounted and installed to prevent damage from road shock. 28 Generac® Power Systems, Inc. Section 2 – Installation IMPACT-36 plus II Recreational Vehicle Generator • Wiring must be of adequate size, with approved insulative qualities, and properly supported. • Conduit and wire openings into generator compartment (if used) must be vapor-sealed, to prevent entry of flammable, explosive or poisonous gases into the vehicle. Figure 2.19 — Inverter J Box for AC Output ◆ 2.6.1 WIRING • Wiring should be of stranded copper to reduce chance that vibration may cause breakage. • Wire gauge size of wires should be large enough to handle at least 115% of the installed generator's rated maximum current. • If neutral conductors are used, they must be the same size as other leg wires. • Route power supply conductors from generator DC output leads +DC (Red) and -DC (Blue), the return (Black) and the ground (Green) wire through approved flexible conduit, through the compartment floor and to the terminal block located in the DC junction box on the inverter. Refer to ANSI/RVIA standard EGS-1-1993 for conduit selection. • If flexible metal conduit is used between the generator and the compartment junction box, the conduit end that terminates at the compartment junction box must be vapor-sealed. Flexible metal conduit is NOT vapor tight along its entire length. • From the AC output junction box on the inverter, route the three wires T1 (Black), T2 (White), and the Green ground wire through approved flexible conduit to either (a) double-pole, double-throw transfer switch, or (b) approved isolation receptacle. Connecting to a transfer switch or isolation receptacle must prevent vehicle electrical circuits from being connected to two different power supplies at the same time (such as generator and dockside power). • Conductors must be rated 221°F (105°C) or must be of a larger conductor size. ◆ 2.6.2 GENERATOR AC CONNECTION SYSTEM The Impact plus AC generator output is provided by the remote located inverter module. 120V AC is provided from the terminal block located inside one of the J boxes on the inverter unit (Figure 2.19). The unit is provided with a ground which is connected to the generator and should be connected to the chassis of the recreational vehicle. Circuit breaker protection is provided on the generator and protects the unit against overload. Do not apply loads which exceed the rated wattage, or amperage capacity of the generator. Add the watts or amperes of all lighting, appliance, tool and motor loads that the generator will operate at one time. This total should be less than the units rated wattage/amperage capacity. ◆ 2.6.3 ISOLATING DIFFERENT POWER SOURCES Conductors from the junction box must terminate in a double pole, double throw transfer switch (Figure 2.20). An alternate method for isolating different power sources is by using an isolating receptacle (Figure 2.21). Whichever method is used, be certain that both power sources are NOT connected at the same time. ◆ 2.6.4 POWER SUPPLY CORD The power supply cord must comply with all applicable codes, standards and regulations. It must be large enough to handle the full amperage to which it will be subjected. ◆ 2.6.5 GROUND FAULT CIRCUIT INTERRUPTERS The National Electric Code (NFPA 70, 551-7) requires installation of ground fault circuit interrupters (GFCIs) on all external and some internal electrical receptacles. Contact the dealer for recommendations. Generac® Power Systems, Inc. 29 Section 2 – Installation IMPACT-36 plus II Recreational Vehicle Generator Figure 2.20 — Transfer Switch Isolation Method INVERTER POWER SUPPLY CORD POWER CORD FOR DOCKSIDE POWER Figure 2.21 — Installation with Isolation Receptacle INVERTER 30 Generac® Power Systems, Inc. Section 2 – Installation IMPACT-36 plus II Recreational Vehicle Generator ◆ 2.6.6 SENSING HARNESS A sensing harness has been provided with the generator to connect to the inverter (Figure 2.22). It is 12 feet long, however, it is also available in a 24 foot length: Model # 04612-0. The four (4) DC power wires (Red, Blue Black, and Green) may be cut to the desired length to meet the installation (see Figure 2.22). ! 2.7 DO NOT in any way cut or shorten the sensing harness. If the harness is too long, simply tie the excess up neatly with standard cable ties. BATTERY INSTALLATION ◆ 2.7.1 RECOMMENDED BATTERY Install a battery that meets the following requirements: • Battery must be a 12 volt, automotive type storage battery. • For prevailing ambient temperatures above 32°F (0°C), use a battery rated 70 amp-hours and capable of delivering 400 cold cranking amperes. • For prevailing ambient temperatures below 32°F (0°C), use a battery rated 95 amp-hours and capable of delivering 450 cold cranking amperes. IMPORTANT: IF THE BATTERY IS TO BE USED TO POWER OTHER VEHICLE ACCESSORIES, AS WELL AS START THE GENERATOR, A BATTERY WITH A LARGER CAPACITY MAY BE NEEDED. ◆ 2.7.2 BATTERY CABLES Using battery cables that are too long or too small in diameter may cause a drop in voltage which causes starting problems. For best cold weather starting, the voltage drop between battery terminals and the generator connection point should not exceed 0.12 volts per 100 amperes of cranking current. Select battery cables based on (a) cable length, and (b) prevailing ambient temperatures. Generally, the longer the cable and the colder the weather, the larger the cable size must be as shown in the following chart. Figure 2.22 — Generator to Inverter Connection RED BLACK BLUE GREEN J-BOX - GENERATOR TO INVERTER INPUT Generac® Power Systems, Inc. 31 Section 2 – Installation IMPACT-36 plus II Recreational Vehicle Generator CABLE LENGTH in Feet (Meters) CABLE SIZE 0 to 10 (0 to 3) 11 to 15 (3.4 to 4.5) 16 to 20 (4.9 to 6) 2* 0 000 * For warm weather, use No. 2 cable up to 20 feet. ◆ 2.7.3 BATTERY CABLE CONNECTIONS 1. Connect the battery cable from the battery post or terminal indicated by a POSITIVE, POS or (+) to the large lug on the starter contactor as indicated in Figure 2.23. 2. Connect the battery cable from the battery post indicated by a NEGATIVE, NEG or (—) to the frame ground connection. 2.8 OPTIONAL ACCESSORIES ◆ 2.8.1 REMOTE PLUG-IN RECEPTACLE A plug-in receptacle (Figure 2.24) is provided on the generator set, near the DC power wires. Use this receptacle to connect an optional remote-mounted start/stop panel to the generator. Installation of such a panel permits starting and stopping the generator engine from any convenient location inside the vehicle. Figure 2.24 — Remote Panel Plug-In Receptacle Figure 2.23 — Connecting Battery Cables (13) To Panel (16) To Starter Starter Contacter Positive Customer Connection ◆ 2.8.2 REMOTE START/STOP PANEL d olle ontr DC C ) (56 Volts 12 Frame Ground Ground Wire NOTE: If the generator compartment is grounded to the vehicle chassis, it’s not necessary to connect a NEGATIVE battery cable to the frame ground on the generator base. Connect the negative cable to the frame ground of the chassis. A remote mounted Start/Stop panel (Figure 2.25) is available that allows the user to start and stop the generator engine conveniently from inside the vehicle. The remote panel includes a Start/Stop switch, hourmeter, generator run lamp and a wire harness. Figure 2.25 — Optional Remote Panel (Models 004057 and 004184) 3. Connect cables so the connections are clean and tight. ◆ 2.7.4 BATTERY COMPARTMENT Install the generator battery in its own, vented compartment. Place the battery compartment away from any source of heat, sparks or flame. Provide ventilation openings in the battery compartment. The minimum size of openings should be 2 square inches at the top of the compartment. Mount the battery on a strong, rigid supporting structure, where leaks and spills of battery fluid will not cause damage. 32 Generac® Power Systems, Inc. The remote panels mount a rocker type start/stop switch, a “Generator Run” advisory lamp and an hourmeter. The hourmeter should be used in conjunction with the maintenance operations found in Part I of this manual. • Model 004057 includes the remote panel and a 10 foot long, 4 wire harness. • Model 004184 includes the remote panel and a 30 foot long, 4 wire harness. Section 3 – Post-installation Start-up Checks IMPACT-36 plus II Recreational Vehicle Generator CHECKS 3.1 POST INSTALLATION TESTS The air cooled Impact-36 plus II generator set was factory tested and adjusted using gasoline as fuel.The air cooled Impact-34 plus II generator set was factory tested and adjusted using LP gas as fuel. It is not required to adjust the unit any further except under special circumstances. ! 3.2 Do not make any unnecessary adjustments. Factory settings are correct for most applications. When making adjustments, however, be careful to avoid overspeeding the engine. BEFORE INITIAL START UP Before starting, complete the following: 1. Check engine crankcase oil level and, if necessary, fill to dipstick FULL mark with the recommended oil. Do not fill above FULL mark. 2. Check the fuel supply. Gas fuel lines must have been properly purged and leak tested in accordance with applicable fuel codes. All fuel shutoff valves in the fuel supply lines must be open. DANGER If an LP (propane) gas fuel system has been installed, it must have been properly tested for leaks before operating the system in compliance with ANSI A119.2/NFPA 501C. No leakage is permitted. Be sure no gaseous fuel vapors enter the vehicle interior. 3.3 INITIAL START When absolutely certain that the unit has been properly installed and prepared for use, start the engine as follows: 1. Turn off all electrical loads. Do this by setting the generator main circuit breaker to its “OFF” or “OPEN” position. 2. Refer to the Owner's Manual shipped with unit for cranking and starting instructions. The engine may require more cranking for initial starting since the fuel lines have to be primed (Use of the Primer Switch on gasoline units will shorten this time). 3. Let the engine warm up for about five minutes to allow internal temperatures to stabilize. 4. Carefully inspect the engine-generator for fuel, oil and exhaust system leaks. Before proceeding to the next step, correct any leakage immediately. 5. When all tests and adjustments at no-load are completed, apply electrical loads and check for proper operation under load. See “Testing Under Load”, Section 3.4. Run the unit at least 30 minutes with loads applied. 6. Turn off all electrical loads by setting the generator main circuit breaker to “OFF” or “OPEN.” 7. Let the unit run at no-load for a few minutes to stabilize internal engine-generator temperatures. Then, shut down the engine. IMPORTANT: THE GENERATOR SET WAS THOROUGHLY TESTED AND ADJUSTED AT THE FACTORY BEFORE SHIPPING. NO ADDITIONAL ADJUSTMENT SHOULD BE NECESSARY. ONLY QUALIFIED SERVICE TECHNICIANS WHO HAVE BEEN TRAINED SHOULD PERFORM ADJUSTMENTS OUTLINED IN THIS MANUAL. 3.4 TESTING UNDER LOAD Apply electrical loads equal to about 75-100% of the unit's rated wattage/amperage capacity. Let the unit run at least 30 minutes with load applied. During this part of the test, check that the unit is not running excessively hot and that adequate cooling air flow is available. Do not allow the unit to overheat during prolonged operation. NOTE: The generator engine is equipped with a high temperature switch. The switch has normally-open (N.O.) contacts. When the temperature is too high, switch contacts close, and engine shuts down automatically. IMPORTANT: GENERAC RECOMMENDS THAT THE GENERATOR IS TESTED FOR ADEQUATE COOLING. Generac® Power Systems, Inc. 33 Section 3 – Post-installation Start-up Checks IMPACT-36 plus II Recreational Vehicle Generator 3.5 INSTALLATION CHECKLIST ◆ LOCATION AND SUPPORT ❑ Generator is properly located. ❑ Generator is properly supported. ❑ Generator is properly restrained. ◆ GENERATOR COMPARTMENT ◆ EXHAUST SYSTEM ❑ Exhaust system complies with all applicable codes. ❑ Exhaust system is properly and safely installed. ◆ ELECTRICAL CONNECTIONS ❑ Connections comply with local code requirements and all National Electrical Codes. ❑ Compartment construction is proper. ❑ Junction box is properly installed. ❑ Holes/Openings are vapor-sealed. ❑ Wiring meets all standards. ❑ Compartment size is correct. ❑ All connections are correct. ❑ Compartment is vapor-sealed. ❑ Conduit is properly installed and sealed. ❑ Sound insulation is correct. ❑ Generator is properly bonded to the vehicle. ❑ Floor cutouts are properly completed. ◆ COOLING AND VENTILATING AIR ◆ BATTERY INSTALLATION ❑ Recommended battery is installed. ❑ Airflow is adequate. ❑ Recommended cables are installed. ❑ Air inlet opening is correct. ❑ Cables are clean and tight. ❑ Compensate for restrictions. ❑ Cables are connected properly. ❑ Check that installation has been tested. ❑ Proper ventilation is provided. ◆ DIESEL FUEL SYSTEM ❑ Fuel tank complies with all applicable codes. ❑ Fuel system is properly installed and checked for leaks. ❑ Terminals are coated with anti-corrosion grease, and terminal covers are positioned. ◆ OPTIONAL ACCESSORIES ❑ Check that remote start/stop panels (if used) are installed properly. ❑ Check that all other options and accessories (if used) are installed properly. ◆ POST INSTALLATION TESTS ❑ Check that all tests are completed properly. DATE OF INSTALLATION ____________________________________________________ NAME OF INSTALLER ______________________________________________________ SIGNATURE OF INSTALLER ________________________________________________ 34 Generac® Power Systems, Inc. Section 4 – Troubleshooting IMPACT-36 plus II Recreational Vehicle Generator 4.1 TROUBLESHOOTING GUIDE PROBLEM CAUSE CORRECTION 1. 2. Fuse is blown. Loose corroded or defective battery cables. Defective engine Start/Stop switch. Defective starter contactor. Defective starter motor. Low or defective Battery 1. 2. 1. 2. 3. 4. 5. 6. Out of fuel. Fuel pump is defective (Gasoline), OR, fuel solenoid is defective (LP). Open Wire #14 from Eng. Control Bd. Engine is flooded. Spark plug defective. Loose spark plug boot. 3. 4. 5. 6. Replenish fuel. Replace defective fuel pump or fuel solenoid. Reconnect wire. Wait 5-10 min. before trying. Clean, regap or replace plug. Press boot on securely. Engine starts hard, runs rough. 1. 2. Air cleaner plugged or damaged. Defective spark plug. 1. 2. Clean or replace as needed. Clean, regap or replace plug. Engine starts, shuts down when Start/Stop switch is released. 1. 2. 3. 4. 5. Engine oil is low. Engine is overheated. Defective Low Oil Pressure System Defective Control Board Defective Computer Control Board. 1. 2. 3. 4. 5. Check oil; add as needed. Check adequate ventilation. Have serviced/replaced. Have board serviced/replaced. Have board serviced/replaced. Start/Stop switch at Stop, engine continues to run. 1. 2. 1. 2. Replace switch. Reconnect or close wire. 3. Reconnect or close wire. 4. Defective Start/Stop switch Open/disconnected wire #18 between Start/Stop switch and Control Open/disconnected wire #0 between Start/Stop switch & Control Bd. Defective Control Board 4. Replace board. 1. 2. 3. 4. Check circuit breaker. Check vehicle circuit breaker & fuses. Transfer sw. set to NORMAL position. Generator internal failure. 1. 2. 3. 4. 5. Inverter defective. 5. Reset to ON or CLOSED. Reset and replace if necessary. Set to GENERATOR position. Take generator to an Authorized Generac facility. Take generator to an Authorized Generac facility. Engine won't crank. 3. 4. 5. 6. Engine cranks but won't start, low full load power. 1. 2. 3. No output from generator. 3. 4. 5. 6. Replace 15 amp fuse. Tighten, clean or replace as necessary. Replace Start/Stop switch. Replace contactor. Replace starter motor. Charge or replace battery. Generac® Power Systems, Inc. 35 Section 5 — Electrical Data IMPACT-36 plus II Recreational Vehicle Generator Wiring Diagram and Schematic – Drawing No. 0D4947-B 36 Generac® Power Systems, Inc. Section 5 — Electrical Data IMPACT-36 plus II Recreational Vehicle Generator Wiring Diagram and Schematic – Drawing No. 0D4947-B Generac® Power Systems, Inc. 37 Section 6 — Exploded Views and Parts Lists 48 17 16 26 6 3 10 4 27 38 Generac® Power Systems, Inc. 36 1 44 47 8 35 22 2 28 49 9 13 2 21 11 9 40 5 41 8 14 15 9 41 9 31 19 20 19 46 43 31 27 25 12 14 22 42 7 23 38 30 37 20 22 10 33 24 45 34 51 50 IMPACT-36 plus II Recreational Vehicle Generator Control Panel – Drawing No. 0E7560 Section 6 — Exploded Views and Parts Lists IMPACT-36 plus II Recreational Vehicle Generator Control Panel – Drawing No. 0E7560 ITEM PART NO. QTY. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 091526 020093 0E7556 075477 051716 074908 023484M 0A8592 049226 075476 051715 022985 023897 0E7557 030809 087798 092113 0A9611 032300 0A6422 065795 022264 0E7555 096874 0A6060 043181 043182 089744 0A6423A 045756 086722 075210A 0A6423B 0912970025 0A6470 091269A 023484D 082121A 051713 025105 084867 051718 0C1457 036933 0A6423C 029333A 023762 0D4885 051714 0A6464 0D4884 0D4882 0A6700 0A9183 7 1 1 1 1 8 1 1 6 10 2 4 7 1 1 1 1 1 1 1 1 14 1 4 1 4 4 1 2 4 1 1 4 1 1 1 1 1 2 4 3.5 4 1 4 1 1 4 1 2 1 1 1 1 1 DESCRIPTION M5-0.8 X 12MM PHILLIPS PAN HD. MACH. SCR. BOX, CONTROL TOP BOX, CONTROL PANEL SCREW PPHM M5-0.8 X 20 M5-0.8 HEX NUT TAPTITE M5- .8 X 10MM SNAP BUSHING CIRCUIT BREAKER,15A. LOCK WASHER-M5 M4-0.7 X 16MM M4-0.7 HEX NUT M4 FLAT WASHER M5 FLAT WASHER CONTROL PANEL, FRONT RUBBER GROMMET SWITCH, SPDT ROCKER SWITCH, SPDTMOM ROCKER FUSE, 7.5A. AGC FUSE HOLDER EXTRUSION, CONTROLLER RECTIFIER, BATTERY CHARGE LOCK WASHER-M4 PANEL DECAL DIODE, DUAL 30A ASSEMBLY, PCB CCG PHMS M3-.05 X 10MM LOCK WASHER-M3 RESISTOR, POWER 1 OHM BUS BAR, OUTER TAPTITE M6- 1.0 X 10MM BRACKET, HEAT SINK-PCB TERMINAL BLOCK BUS BAR, INNER GROUND WIRE DC POWER HARNESS REMOTE PANEL HARNESS SNAP BUSHING CLAMP, CONTROL PANEL HARNESS WASHER FLAT M5 #6-32 X 1/4" PHILLIPS ROUND HD. MACH. SCREW RUBBER U-CHANNEL M4-0.7 X 10MM HEX HEAD CAPSCREW HOUR METER PPHMS 10-32 X 3/8" LG BUS BAR, CENTER BLACK TIE WRAP, 7" LG SHAKEPROOF EXT. #10 INVERTER ASSEMBLY M3-0.5 NUT WIRE HARNESS-HEATSINK TO PCBI WIRE HARNESS HARNESS-PCBI TO PANEL (NOT SHOWN FOR CLARITY) HARNESS-HEATSINK TO TERM. BLOCK (NOT SHOWN FOR CLARITY) HARNESS, CONTROL PANEL (NOT SHOWN FOR CLARITY) Generac® Power Systems, Inc. 39 Section 6 — Exploded Views and Parts Lists IMPACT-36 plus II Recreational Vehicle Generator Sheet Metal – Drawing No. 0F1091-A 2 1 3 4 13 6 5 63 5 8 7 6 5 8 9 15 14 12 16 13 7 10 11 5 5 21 4 17 3 18 58 7 22 19 26 60 62 25 61 29 28 24 32 23 9 31 9 16 44 49 33 45 46 27 39 3 9 38 9 51 54 2 7 42 50 40 9 41 52 47 53 55 56 40 Generac® Power Systems, Inc. 11 48 Section 6 — Exploded Views and Parts Lists IMPACT-36 plus II Recreational Vehicle Generator Sheet Metal – Drawing No. 0F1091-A ITEM 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 PART NO. QTY. DESCRIPTION 086705 049813 022097 0A1658 086718 0A3666 056893 0A3638 074908 090141A 0A8475 0C3296 086727 086671 086726 023897 038353 022127 0912970071 0742600103 090537 089048 086719 0A3667 0A7213 079119 045771 022129 022145 066443B 0A3764 039414 020668 PLATE, DIVIDER NUT HEX M6 X 1.0 WASHER LOCK M6-1/4 WASHER LOCK SPECIAL 1/4" SEAL, RUBBER EXTRUSION WRAPPER, BOX SCREW CRIMPTITE #10-24 X 1/2" PANEL, WRAPPER BOX SCREW HHTT M5-0.8 X 10mm STRAP, EATON GROUND SPECIAL LOCK WASHER #10 FRAME ASSEMBLY SKIRT, SPARK PLUG SIDE COVER, ROCKER COVER SKIRT, CARB. BAFFLE WASHER FLAT #10 VIBRATION MOUNT NUT HEX 1/4"-20 STARTER CONTACTOR GROUND WIRE GROUND STRAP, UNIT RETAINER, SEAL OIL SEAL, OIL FILTER HOLE PAN, BELLY MOUNTING BRACKET TAG, BOLT REMOVAL SCREW HHTT 1/4"-20 X 1-1/4" NUT HEX M8-1.25 WASHER LOCK M8-5/16 WASHER FLAT 5/16-M8 VIBRATION MOUNT CUSTOMER MOUNTING BRACKET SCREW HHC M8-1.25 X 35mm EARTHING STRAP 1 4 9 3 3.5' 1 32 1 31 1 2 1 1 1 1 7 3 5 1 1 1 1 1 2 1 1 8 12 4 4 2 4 2 ITEM PART NO. QTY. DESCRIPTION 34 35 092000 079246 1 2 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 086731A 094670 089680 086715 056892 089471 086724 086729 090518 022471 022264 089045 086711 049226 051716 0A9196 089049B 049721 089047 0A9172 091526 084867 0F1247 050830 - 1 1 1 1 1 1 1 1 1 2 2 1 1 5 2 1 1 2 2 1 2 .5 1 3 1 61 62 63 64 047290 0C7649 023484D 0E8245 1 1 1 1 BRACKET, MUFFLER HANGER SCREW HHC M6-1.0 X 16mm W/ LOCK WASHER ASSEMBLY, MUFFLER CLAMP EXHAUST SCREEN, SPARK ARREST HOUSING, LOWER FAN SCREW CRIMPTITE #10-24 X 3/8" DEFLECTOR, AIR OUT PLATE, BASE COVER CONTACTOR, STARTER BOOT, CONTACTOR NUT HEX #8-32 WASHER LOCK #8-M4 SEAL, WASHER EXHAUST PIPE MODULE, IGNITION WASHER LOCK M5 NUT HEX M5-0.8 COVER, IGNITION BRACKET ASSEMBLY, IGNITION COIL SCREW HHC M6-1.0 X 35mm SPACER, IGNITION COIL BRACKET, IGNITION SYSTEM SCREW PPHM M5-0.8 X 12mm RUBBER "U" CHANNEL WIRE ASSEMBLY, BLOCKING DIODE SCREW HHC M5-0.8 X 40mm REGULATOR ASSEMBLY (SEE E.V. OF1092) HOSE-3/8" I.D. x 11" LONG CLAMP HOSE 0.38"-0.87" SNAP BUSHING BRACKET, REGULATOR MOUNT Generac® Power Systems, Inc. 41 Section 6 — Exploded Views and Parts Lists 48 42 38 32 51 52 49 3 14 10 6 7 2 1 7 5 50 8 1 19 34 17 18 59 13 13 33 22 25 23 24 11 28 4 17 36 37 58 40 39 21 54 53 31 30 26 43 44 45 47 46 IMPACT-36 plus II Recreational Vehicle Generator GN 220 RV Long Block – Drawing No. 0A6202-H 42 Generac® Power Systems, Inc. Section 6 — Exploded Views and Parts Lists IMPACT-36 plus II Recreational Vehicle Generator GN 220 RV Long Block – Drawing No. 0A6202-H ITEM 1 2 3 4 5 6 7 8 10 11 13 14 17 18 19 21 22 23 24 25 26 28 30 31 32 33 34 36 37 38 39 40 42 43 44 45 46 47 48 49 50 51 52 53 54 58 59 PART NO. 078621 076389 088411 072657A 077176 088057 076390 083379A 089923 089213G 0E3811 090604 078699B 0A9878 089096 0A8822 078691 0A5772 0A5776 074908 078606 0D2414 0C3733 0C4390 088590 083152 076381 021705B 0C3590 0C3591 0D9853A 083235 0C8754 077161 077160 076307 088403 077168 088413B 078629 090388 083153 092977 084186 088156 072347 0E7585 099922 QTY. 1 1 1 2 1 1 2 1 1 1 2 1 3 1 1 1 1 1 1 1 4 6 2 2 1 1 2 1 1 1 2 2 1 2 2 2 1 5 1 2 2 1 1 2 1 1 1 1 DESCRIPTION ASSY, CONNECTING ROD PISTON PIN PISTON RING SET PLUG, 1/4 NPTF PIPE COVER, BREATHER PISTON, DIA 75 RING, PIN RETAINER ASSY, C'SHFT CCG TPR SPRTR, OIL BREATHER CRNKCASE,SUBASY W/PLUG GN220RV SEAL, D 28 X 41.47 VITON OIL ASSY, BREATHER CUP SLEEVE SEAMED DOWEL 12 DIA. CAMSHAFT ASSY GASKET,C'CASE GASKET, CYL. HEAD COVER OIL PRES RELIEF SPRING,OIL RELIF 220 BALL,DIA 11/32 PRELF SCREW HHTT M5-0.8 X 10 BP SCREW & LW M6-1 X 12 SCREW HHFC M8-1.25 X 35 RETAINER, VALVE SPRING, VALVE DOWEL DIA 12 X 18L GEROTER, INNER 6/5 BOLT, CON ROD ASSY,CYL HD GDS&STS VALVE, EXHAUST VALVE, INTAKE PUSHROD 145.76 TAPPET, DIA 7.5 GASKET, VALVE COVER STUD, PIVOT BALL ARM, ROCKER, GN191 NUT, JAM (ROCKR ARM) PLATE,PUSHROD GUIDE HEADBOLT M8 X 56 MM COVER ROCKER W/OUT BREATHER GASKET, BREATHER SCREW HHTT M6-1.0 X 12 YC GEROTER, OUTER 6/5 ASSY,OIL SUMP 220RV WEAR WSHER,VLV SPRNG SEAL,VALVE STEM 6.0 SPARK PLUG (00940 ONLY) SPARK PLUG (00941 ONLY) WASHER,SPRING Generac® Power Systems, Inc. 43 Section 6 — Exploded Views and Parts Lists IMPACT-36 plus II Recreational Vehicle Generator Generator – Drawing No. 0F1134 63 60 59 62 4 60 68 14 78 59 61 64 67 65 66 69 70 71 32 58 57 56 75 53 7 54 52 51 73 72 50 49 2 77 48 72 64 79 47 45 44 43 81 66 43 45 80 41 39 36 35 38 37 42 31 8 66 87 86 6 34 32 33 39 24 84 30 28 29 27 26 89 88 23 2 25 4 22 85 66 83 8 11 5 44 Generac® Power Systems, Inc. 12 19 17 15 16 13 Section 6 — Exploded Views and Parts Lists IMPACT-36 plus II Recreational Vehicle Generator Generator – Drawing No. 0F1134 ITEM PART NO. QTY. DESCRIPTION 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 0A2467 094583 083312 081810 070185B 086730 089476 040976 0D2446 087478 086714 0A8584 0912970071 0912970003 0912970005 097962 022097 0C2908 052617 094090 043182 0C1085 090051 1 1 2 2 1 1 1 2 1 1 1 1 1 1 1 4 8 1 1 1 2 2 2 24 25 26 27 28 086708 086726 078631 0A2774B 096459 1 1 1 1 1 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 086709 089050 035586 0F1225 090072 094637 090071 089263 049226 056893 038353 059637 086701 086702 086704 022237 022511 1 2 2 1 1 1 1 1 4 1 3 4 1 1 3 3 3 ENGINE, LONG BLOCK FLYWHEEL, FAN WASHER, CONICAL NUT HEX M16-1.5 FILTER, OIL TUBE, EXHAUST OUTLET GASKET, EXHAUST SCREW SHC M8-1.25 X 20mm ADAPTOR, OIL FILTER GASKET, OIL FILTER ADAPTOR SCREEN, OIL PICK-UP 10 PSI OIL PRESSURE SWITCH GROUND WIRE (PRESSURE SWITCH) TEMP. SWITCH WIRE OIL PRESSURE SWITCH WIRE SCREW SHC M6-1.0 X 25mm WASHER LOCK M6-1/4" GASKET, OIL DRAIN PLUG SCREW HHC M12-1.75 X 20mm SWITCH, THERMAL OIL TEMP. WASHER LOCK M3 SCREW PPHM M3-0.5 X 8mm GASKET, CARBURETOR / SPACER / HEAD CARBURETOR SPACER SKIRT, BAFFLE GASKET, CARBURETOR / SKIRT CARBURETOR ASSEMBLY GASKET, CARBURETOR/INLET ADAPTOR ADAPTOR, CARBURETOR INLET PPHMS, #M6-1 X 90mm LONG HOSE CLAMP-BAND #20 HOSE, CARBURETOR INLET O-RING .562" I.D. OIL FILL TUBE O-RING, 1.062" I.D. ASSEMBLY, OIL FILL CAP & DIPSTICK WASHER LOCK M5 SCREW CRIMPTITE #10-24 X 1/2" RUBBER MOUNTS SCREW HHTT 3/8"-16 X 3/4" BRACKET, ENGINE MOUNT FRONT BRACKET, ENGINE MOUNT REAR SPACER, ENGINE MOUNT WASHER LOCK 3/8" SCREW HHC 3/8"-16 X 1-1/4" ITEM PART NO. QTY. DESCRIPTION 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 086705 090192 089477 086706 089478 078609 086674 078601 059635 090613 089062A 086673 090021 049815 023897 087993 090536 094665 045756 042907 022129 093859 074908 055822 022264 086697 086692 0A5892 080934 066449C 0D4883 074906 0912970004 0A8475 096627 1 1 1 1 1 2 1 1 1 1 1 1 1 8 6 1 1 1 3 3 10 1 3 2 2 1 1 1 1 4 1 4 1 2 1 81 82 83 84 85 86 87 88 89 90 91 039253 082774 092800 088905 083512 059636 0D4408 022145 0912970002 092059 049821 3 1 1 1 1 1 1 2 1 1 2 PLATE, DIVIDER WASHER, CARBURETOR CLIP, ADJUSTMENT ROD, THROTTLE CONTROL SNAP, RETAINING BOLT, AIR CLEANER COVER COVER, AIR BOX ELEMENT, AIR FILTER PLASTITE SC #8 X 0.37" COVER, BREATHER CANAL HOSE, BREATHER BASE, AIR BOX BRACKET, AIR CLEANER SUPPORT SCREW HHC M5-0.8 X 16mm WASHER FLAT #10 ELBOW, AIR CLEANER OUTLET GASKET, AIR CLEANER OUTLET HOUSING, FAN-UPPER SCREW HHTT M6-1.0 X 10mm SCREW HHC M8-1.25 X 16mm WASHER LOCK M8-5/16" FAN, GENERATOR SCREW HHTT M5-0.8 X 10mm SCREW PHM M4-0.7 X 8mm WASHER LOCK #8-M4 ASSEMBLY IGNITION SENSOR ADAPTOR. STATOR ASSEMBLY, MAGNET HOUSING RETAINING RING, STATOR BOLT, M6-1.0 X 80mm LONG ASSEMBLY STATOR SCREW HHTT M6-1.0 X 20mm TEMP SWITCH GROUND WIRE LOCK WASH SPECIAL #10 BRACKET, STARTER SIDE ENGINE MNT. SCREW HHC M8-1.25 X 20mm WOODRUFF KEY-4 x 19MM WRAPPER, ENGINE TOP EXTENSION SPRING SCREW HHTT M8-1.2 X 16mm SCREW PPPH #4 X 0.37" STARTER MOTOR WASHER FLAT 5/16"-M8 STARTER WIRE STEPPER MOTOR SPEED CONTROL SCREW SHC M8-1.25 X 30mm Generac® Power Systems, Inc. 45 Section 6 — Exploded Views and Parts Lists IMPACT-36 plus II Recreational Vehicle Generator LP Regulator – Drawing No. 0F1092-C 2 5 11 6 7 8 12 30 29 10 9 28 1 16 13 17 14 18 19 15 21 22 20 23 24 25 26 27 ITEM PART NO. QTY. DESCRIPTION 1 0D5694 1 2 5 6 7 8 9 10 11 0F4795 0F5022 0C6070 0C4680 0C4647 0C4643 0D3973 0D7023 4 1 1 1 1 1 1 1 12 13 14 15 072683A 0D3308 070728 0C5764A 2 2 2 1 CASTING, TWIN REGULATOR HOUSING SCREW PPHM M4-0.7 X 10 SOLENOID COIL, 12VDC SPRING-SOLENOID PLUNGER PLUNGER LP REG. ASSY GASKET, SOLENOID INLET, TWIN REGULATOR NO HOLE PLUG, EXPANSION 16MM TWINREG BARBED ELBOW 90 1/2"NPT X 3/8" HOSE PLUG 1/8" NPTF PIPE WASHER FLAT 3.2MM ID X 10MM OD SCREW PFILHM M3-0.5 X 5 SPRING, REGULATOR 45N/M 29MM 46 Generac® Power Systems, Inc. ITEM 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 PART NO. QTY. DESCRIPTION 0C4643A 0C6066 0C5968 0C5759 0C5761 0C6069 0C6731 0C6067 0C4706 0C6068 0C5762 045764 025425 0E4170 0C5760 INLET, TWIN REG 11.11 DIA. SEAL, INLET REGULATOR SUPPORT, INLET SEAL PIN, PIVOT ARM LEVER, REGULATOR GASKET, DIAPHRAGM RIVET .118 X .125 ALUMINUM SUPPORT, DIAPHRAGM DIAPHRAGM, TWIN REGULATOR CAP, DIAPHRAGM SUPPORT COVER,TWIN REGULATOR SCREW HHTT M4-0.7 X 8 BP ELBOW 45D STREET 3/4" NPT CONNECTION 3/4"NPT - 3/8" 45D JET LP GN220 ENGINE 1 1 1 1 1 1 1 1 1 1 1 8 1 1 1 Section 7 — Installation Diagram IMPACT-36 plus II Recreational Vehicle Generator Major Features and Dimensions – Drawing No. 0F1119 Generac® Power Systems, Inc. 47 Section 8 – Warranty IMPACT-36 plus II Recreational Vehicle Generator CALIFORNIA AND FEDERAL EMISSION CONTROL WARRANTY STATEMENT YOUR WARRANTY RIGHTS AND OBLIGATIONS The California Air Resources Board (CARB) and the United States Environmental Protection Agency (EPA), together with Generac Power Systems, Inc. (Generac), are pleased to explain the Emission Control System Warranty on your new engine.* New utility, and lawn and garden equipment engines must be designed, built and equipped to meet stringent anti-smog standards for the state of California and the federal government. Generac will warrant the emission control system on your engine for the periods of time listed below provided there has been no abuse, neglect, unapproved modification or improper maintenance of your engine. Your emission control system may include parts such as the carburetor, ignition and exhaust systems. Generac will repair your engine at no cost to you for diagnosis, replacement parts and labor, should a warrantable condition occur. MANUFACTURER’S EMISSION CONTROL SYSTEM WARRANTY COVERAGE: Emissions control systems on 1997 and later model year engines are warranted for two years as hereinafter noted. If, during such warranty period, any emission-related component or system on your engine is found to be defective in materials or workmanship, repairs or replacement will be performed by a Generac Authorized Warranty Service Facility. PURCHASER’S/OWNER’S WARRANTY RESPONSIBILITIES: As the engine purchaser/owner, you are responsible for the completion of all required maintenance as listed in your factory supplied Owner’s Manual. For warranty purposes, Generac recommends that you retain all receipts covering maintenance on your engine. However, Generac cannot deny warranty solely because of the lack of receipts or for your failure to ensure the completion of all scheduled maintenance. As the engine purchaser/owner, you should, however, be aware that Generac may deny any and/or all warranty coverage or responsibility if your engine, or a part/component thereof, has failed due to abuse, neglect, improper maintenance or unapproved modifications, or the use of counterfeit and/or “grey market” parts not made, supplied or approved by Generac. You are responsible for presenting your engine to a Generac Authorized Warranty Service Facility as soon as a problem occurs. The warranty repairs should be completed in a reasonable amount of time, not to exceed 30 days. Warranty service can be arranged by contacting either your selling dealer or a Generac Authorized Warranty Service Facility . To locate the Generac Authorized Warranty Service Facility nearest you, call our toll-free number: 1-800-333-1322 IMPORTANT NOTE: This warranty statement explains your rights and obligations under the Emission Control System Warranty (ECS Warranty), which is provided to you by Generac pursuant to California and federal 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. Both the ECS Warranty and the Generac Warranty describe important rights and obligations with respect to your new engine. Warranty service can be performed only by a Generac Authorized Warranty Service Facility. When requesting warranty service, evidence must be presented showing the date of the sale to the original purchaser/owner. The purchaser/owner shall be responsible for any expenses or other charges incurred for service calls and/or transportation of the product to/from the inspection or repair facilities. The purchaser/owner also shall be responsible for any and/or all damages or losses incurred while the engine is being transported/shipped for inspection or warranty repairs. If you have any questions regarding your warranty rights and responsibilities, you should contact Generac at the following address: ATTENTION WARRANTY DEPARTMENT GENERAC POWER SYSTEMS, INC. P.O. BOX 8 WAUKESHA, WI 53187 Part 1 48 Generac® Power Systems, Inc. Section 8 – Warranty IMPACT-36 plus II Recreational Vehicle Generator EMISSION CONTROL SYSTEM WARRANTY Emission Control System Warranty (ECS Warranty) for 1997 and later model year engines: (a) Applicability: This warranty shall apply to 1997 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 continue for 24 consecutive months thereafter. (b) General Emissions Warranty Coverage: Generac warrants to the original, end-use purchaser/owner of the new engine or equipment, and to each subsequent purchaser/owner, that each of its engines is ... (1) Designed, built and equipped so as to conform with all applicable regulations adopted by the EPA and CARB pursuant to their respective authority, and (2) Free from defects in materials and workmanship which, at any time during the ECS Warranty Period, may cause a warranted emissions-related part to fail to be identical in all material respects to the part as described in the engine manufacturer’s application for certification. (c) The ECS Warranty only pertains to emissions-related parts on your engine, as follows: (1) Any warranted, emissions-related parts that are not scheduled for replacement as required maintenance in the Owner’s Manual shall be warranted for the ECS Warranty Period. If any such part fails during the ECS Warranty Period, it shall be repaired or replaced by Generac according to Subsection (4) below. Any such part repaired or replaced under the ECS Warranty shall be warranted for the remainder of the ECS Warranty Period. (2) Any warranted, emissions-related part that is scheduled only for regular inspection as specified in the Owner’s Manual shall be warranted for the ECS Warranty Period. A statement in such written instructions to the effect of “repair or replace as necessary” shall not reduce the ECS Warranty Period. Any such part repaired or replaced under the ECS Warranty shall be warranted for the remainder of the ECS Warranty Period. (3) Any warranted, emissions-related part that is scheduled for replacement as required maintenance in the Owner’s Manual shall be warranted for the period of time prior to the first scheduled replacement point for that part. If the part fails prior to the first scheduled replacement, the part shall be repaired or replaced by Generac according to Subsection (4) below. Any such emissions-related part repaired or replaced under the ECS Warranty shall be warranted for the remainder of the ECS Warranty Period prior to the first scheduled replacement point for such emissions-related part. (4) Repair or replacement of any warranted, emissions-related part under this ECS Warranty shall be performed at no charge to the owner at a Generac Authorized Warranty Service Facility. (5) When the engine is inspected by a Generac Authorized Warranty Service Facility, the owner shall not be held responsible for diagnostic costs if the repair is deemed warrantable. (6) Generac shall be liable for damages to other original engine components or approved modifications proximately caused by a failure under warranty of any emission-related part covered by the ECS Warranty. (7) Throughout the ECS Warranty Period, Generac shall maintain a supply of warranted emission-related parts sufficient to meet the expected demand for such emission-related parts. (8) Any Generac authorized and approved emission-related replacement part may be used in the performance of any ECS Warranty maintenance or repairs and will be provided without charge to the purchaser/owner. Such use shall not reduce Generac’s ECS Warranty obligations. (9) Unapproved, add-on, modified, counterfeit and/or “grey market” parts may not be used to modify or repair a Generac engine. 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” part. EMISSION RELATED PARTS INCLUDE THE FOLLOWING: 1) Fuel Metering System: 1.1) Gasoline carburetor assembly and its internal components (if so equipped). a) Fuel filter (if so equipped) b) Carburetor gaskets c) Fuel pump (if so equipped) 1.2) LPG carburetion assembly and its internal components (if so equipped). a) Fuel controller (if so equipped) b) Mixer and its gaskets (if so equipped) c) Carburetor and its gaskets (if so equipped) d) Primary gas regulator (if so equipped) e) LP liquid vaporizer (if so equipped) 2) Air Induction System including: a) Intake pipe/manifold b) Air cleaner 3) Ignition System including: a) Spark plug b) Ignition module 4) Catalytic Muffler Assembly (if so equipped) including: a) Muffler gasket b) Exhaust manifold 5) Crankcase Breather Assembly including: a) Breather connection tube *Generac engine types covered by this warranty statement include the following: 1) Utility 2) Lawn and Garden Equipment 3) Recreational Vehicle (RV) Generator 4) Industrial Mobile (IM) Generator Part 2 Generac® Power Systems, Inc. 49 Section 8 – Warranty IMPACT-36 plus II Recreational Vehicle Generator GENERAC POWER SYSTEMS’ THREE-YEAR LIMITED WARRANTY FOR GUARDIAN RECREATIONAL VEHICLE GENERATORS NOTE: ALL UNITS MUST BE INSTALLED BY GENERAC POWER SYSTEMS AUTHORIZED SERVICE FACILITIES. For a period of 3 (three) years of operation 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 Facility, is found to be defective under normal use and service, in accordance with the warranty schedule set forth below. Any equipment that the purchaser/owner claims to be defective must be returned to and examined by the nearest Generac Authorized Warranty Service Facility. All transportation costs under the warranty, including return to the factory, are to be borne and prepaid by the purchaser/owner. This warranty applies only to Generac generators sold and rated for “Recreational Vehicle” (RV) applications, as Generac has defined Recreational Vehicle generator applications. The factory recommends exercising the unit one half-hour every month. WARRANTY SCHEDULE – COMMERCIAL APPLICATIONS YEAR ONE – 100% (one hundred percent) coverage on part(s), labor, removal and reinstallation listed: • Engine – All components • Alternator – All components WARRANTY SCHEDULE – CONSUMER/PERSONAL APPLICATIONS YEARS ONE AND TWO – 100% (one hundred percent) coverage on part(s), labor, removal and reinstallation listed: • Engine – All components • Alternator – All components YEAR THREE – 100% (one hundred percent) only on selected part(s) and labor listed [Any labor and part(s) not listed, and removal and reinstallation are the owner’s responsibility]: • Rotor, Stator, Computer Control Board (part numbers 0A6060 and 0A3369) and inverter, (if applicable with regard to the generator) Cylinder Block, Cylinder Head, Crankshaft, Piston(s), Valve, Valve Lifter(s), Intake and Exhaust Manifolds Generac RV generators manufactured prior to December 31, 1997, DO NOT have a transferable warranty. Generac RV generators manufactured after January 1, 1998, have a transferable warranty to the second owner ONLY for the remainder of the three-year limited warranty. Proof-of-purchase is required and must be presented to a Generac Authorized Warranty Service Facility prior to the performance of any warranty service. All warranty expense allowances are subject to the conditions defined in Guardian’s Warranty Policies and Procedures Guide. THIS WARRANTY SHALL NOT APPLY TO THE FOLLOWING: • Generac Guardian generators that utilize non-Generac replacement parts. • Costs of normal maintenance, adjustments, installation and start-up. • Repairs or diagnostics performed by individuals other than Guardian/Generac authorized dealers not authorized in writing by Generac Power Systems. • Failures caused by any contaminated fuels, oils, coolants or lack of proper fluid amounts. • Failures due, but not limited, to normal wear and tear, accident, misuse, abuse, negligence or improper installation. As with all mechanical devices, the Generac engines need periodic part(s) service and replacement to perform well. This warranty will not cover repair when normal use has exhausted the life of a part(s) or engine. • Failures caused by any external cause or act of God, such as collision, theft, vandalism, riot or wars, nuclear holocaust, fire, freezing, lightning, earthquake, windstorm, hail, volcanic eruption, water or flood, tornado or hurricane. • Damage related to rodent and/or insect infestation. • Products that are modified or altered in a manner not authorized by Generac in writing. • Any incidental, consequential or indirect damages caused by defects in materials or workmanship, or any delay in repair or replacement of the defective part(s). • Failure due to misapplication. • Telephone, cellular phone, facsimile, internet access or other communication expenses. • Living or travel expenses of person(s) performing service, except as specifically included within the terms of a specific unit warranty period. • Expenses related to "customer instruction" or troubleshooting where no manufacturing defect is found. • Rental equipment used while warranty repairs are being performed. • Overnight freight costs for replacement part(s). • Overtime labor. • Starting batteries, fuses, light bulbs and engine fluids. THIS WARRANTY IS IN PLACE OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED. SPECIFICALLY, GENERAC MAKES NO OTHER WARRANTIES AS TO THE MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you. GENERAC'S ONLY LIABILITY SHALL BE THE REPAIR OR REPLACEMENT OF PART(S) AS STATED ABOVE. IN NO EVENT SHALL GENERAC BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES, EVEN IF SUCH DAMAGES ARE A DIRECT RESULT OF GENERAC'S NEGLIGENCE. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation may not apply to you. This warranty gives you specific legal rights. You also have other rights from state to state. GENERAC® POWER SYSTEMS, INC. P.O. BOX 297 • WHITEWATER, WI 53190 Revision 02.05 Part No. 0F1117 Revision C (05/17/05) Printed in U.S.A.