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16 Generac

®

Power Systems, Inc.

Safety Rules

IMPACT-36 plus II Recreational Vehicle Generator

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 possi-
ble 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 prod-
uct's safety are not endangered by the method, pro-
cedure, or technique selected.

Information, illustrations, specifications, etc., con-
tained in these 

Installation Instructions

are based on

the latest information available at the time of publi-
cation. 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, with-
out prior notice.

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.

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 monox-

ide, which can be DEADLY. This dangerous gas, if
breathed in sufficient concentrations, can cause
unconsciousness or even death. This exhaust sys-
tem must be installed properly, in strict compli-
ance with applicable codes and standards.
Following installation, do nothing that might ren-
der the system unsafe or in noncompliance with
such codes and standards. The generator com-
partment 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 ven-

tilating air is critical to correct generator oper-
ation and is required to expel toxic fumes and
fuel vapors from the generator compartment.
Without sufficient cooling airflow, the
engine/generator quickly overheats, which caus-
es 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 genera-

tor, disconnect its battery cables to prevent acci-
dental 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 con-
ditions from leaking exhaust gases, fuel leakage,
oil leakage, etc.

• Never insert any tool or other object through open-

ings in the generator interior, even if the unit is not
running. Seriouse injury or damage to the equip-
ment may occur.

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DANGER

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.

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Summary of Contents for 00941-4

Page 1: ...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...

Page 2: ...f 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 under stand all instruct...

Page 3: ...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 Clear...

Page 4: ...MS 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 gens...

Page 5: ...the victim from the live conductor AVOID DIRECT CONTACT WITH THE VICTIM Use a nonconduct ing implement such as a dry rope or board to free the victim from the live conductor If the victim is unconscio...

Page 6: ...Rating__________________________ 4 Rated Voltage __________________ 5 Phase ______________________________ 6 Hertz __________________________ 1 1 1 IMPACT 36LPG PLUS II FEATURES 1 Generator Air Intake...

Page 7: ...ion 1 General Information IMPACT 36 plus II Recreational Vehicle Generator 1 1 2 INVERTER FEATURES PART NO 0D4885 1 Inverter 2 12 Pin Connection 3 Customer AC Output 4 DC Input 5 Cooling Fan REFERENCE...

Page 8: ...y 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 t...

Page 9: ...ter control system the computer disables the load capability of the gen erator and shuts down the engine Do not attempt to physically adjust or control the engine speed Equipment damage or per sonal i...

Page 10: ...ENCES EXIST BETWEEN VEHICLES FOR EXAMPLE SOME VEHICLES MAY USE A TRANS FER SWITCH TO ISOLATE DOCKSIDE POWER FROM THE GENERATOR WHILE OTHER VEHI CLES MAY USE AN ISOLATING RECEPTACLE SOME VEHICLES MAY B...

Page 11: ...P UNITS These generators are equipped with a liquefied petro leum LP gas fuel system LP gas is usually supplied as a liquid in pressure tanks These generators require a vapor withdrawal type fuel syst...

Page 12: ...ne oil after the first 25 hours of opera tion Thereafter change oil every 100 operating hours Change oil more frequently if operating con sistently under heavy load or at high ambient tem peratures Wa...

Page 13: ...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 BLAS...

Page 14: ...area immediately with clear water Do not use any jumper cables or booster bat tery to crank and start the generator engine If any battery has discharged remove it from the vehicle for recharging 3 11...

Page 15: ...unning drain the oil completely Refill crankcase with recom mended oil See Specifications Attach a tag to the engine indicating the viscosity and classification of the oil in the crankcase Remove spar...

Page 16: ...14 Generac Power Systems Inc Section 4 Notes IMPACT 36 plus II Recreational Vehicle Generator...

Page 17: ...PART II INSTALLATION INSTRUCTIONS ONLY QUALIFIED ELECTRICIANS OR CONTRACTORS SHOULD ATTEMPT INSTALLATION DANGER...

Page 18: ...nds 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 monox ide which can be DEADLY...

Page 19: ...conductor If the vic tim is unconscious apply first aid and get immediate medical help Never wear jewelry when working on this equip ment Jewelry can conduct electricity resulting in electric shock or...

Page 20: ...ed 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 repl...

Page 21: ...ich 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 typica...

Page 22: ...STEEL DUE TO ALUMINUM S LOW MELTING POINT If the compartment is lined with galvanized steel it may be constructed of any material Generac rec ommends that the compartment be constructed of 1 2 inch t...

Page 23: ...ing 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 com partment joints and seam...

Page 24: ...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...

Page 25: ...e the compartment door interior except for air openings with suitable fire proof sound insula tion such as 1 inch thick fiberglass with a 2 pound density It is absolutely essential that an adequate fl...

Page 26: ...F PLANNING TO INSTALL THE GEN ERATOR IN A COMPARTMENT BE SURE TO LEAVE AT LEAST ONE INCH 2 recommended OF CLEAR ANCE BETWEEN THE GENERATOR AND COM PARTMENT WALLS AND CEILING INCLUDE 26 GAUGE GALVANIZE...

Page 27: ...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 n...

Page 28: ...o the secondary regulator at 11 inch es 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...

Page 29: ...be tested under gas or air pressure of not less than 90 psi 620kPa while using soap and water or equiva lent solution to check for leaks Other approved methods of testing for leaks may be used if app...

Page 30: ...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 damag...

Page 31: ...om being connected to two different power sup plies 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...

Page 32: ...gure 2 20 Transfer Switch Isolation Method Figure 2 21 Installation with Isolation Receptacle INVERTER INVERTER POWER CORD FOR DOCKSIDE POWER POWER SUPPLY CORD Section 2 Installation IMPACT 36 plus II...

Page 33: ...y rated 70 amp hours and capa ble of delivering 400 cold cranking amperes For prevailing ambient temperatures below 32 F 0 C use a battery rated 95 amp hours and capa ble of delivering 450 cold cranki...

Page 34: ...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...

Page 35: ...l 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 insp...

Page 36: ...s properly and safely installed ELECTRICAL CONNECTIONS Connections comply with local code requirements and all National Electrical Codes Junction box is properly installed Wiring meets all standards A...

Page 37: ...ugh 1 Air cleaner plugged or damaged 1 Clean or replace as needed 2 Defective spark plug 2 Clean regap or replace plug Engine starts shuts down 1 Engine oil is low 1 Check oil add as needed when Start...

Page 38: ...36 Generac Power Systems Inc Section 5 Electrical Data IMPACT 36 plus II Recreational Vehicle Generator Wiring Diagram and Schematic Drawing No 0D4947 B...

Page 39: ...Generac Power Systems Inc 37 Section 5 Electrical Data IMPACT 36 plus II Recreational Vehicle Generator Wiring Diagram and Schematic Drawing No 0D4947 B...

Page 40: ...22 2 9 13 2 11 21 14 40 9 15 1 19 19 17 14 16 46 23 8 9 5 41 9 20 41 31 38 25 43 27 26 7 12 31 42 22 37 22 10 30 20 48 33 34 45 24 51 50 Section 6 Exploded Views and Parts Lists IMPACT 36 plus II Rec...

Page 41: ...089744 1 RESISTOR POWER 1 OHM 29 0A6423A 2 BUS BAR OUTER 30 045756 4 TAPTITE M6 1 0 X 10MM 31 086722 1 BRACKET HEAT SINK PCB 32 075210A 1 TERMINAL BLOCK 33 0A6423B 4 BUS BAR INNER 34 0912970025 1 GROU...

Page 42: ...52 9 56 49 50 48 9 54 51 44 42 2 62 61 47 11 9 16 49 9 45 46 1 11 18 9 3 19 4 4 3 5 12 21 22 6 2 7 5 13 14 13 58 5 15 16 7 8 5 63 Section 6 Exploded Views and Parts Lists IMPACT 36 plus II Recreationa...

Page 43: ...X 35mm 33 020668 2 EARTHING STRAP ITEM PART NO QTY DESCRIPTION 34 092000 1 BRACKET MUFFLER HANGER 35 079246 2 SCREW HHC M6 1 0 X 16mm W LOCK WASHER 36 086731A 1 ASSEMBLY MUFFLER 37 094670 1 CLAMP EXH...

Page 44: ...49 50 34 28 13 52 8 1 18 17 51 25 22 33 32 58 42 19 59 23 24 11 13 37 17 4 39 40 38 21 26 30 53 31 48 43 45 46 44 47 36 Section 6 Exploded Views and Parts Lists IMPACT 36 plus II Recreational Vehicle...

Page 45: ...HHFC M8 1 25 X 35 30 0C3733 2 RETAINER VALVE 31 0C4390 2 SPRING VALVE 32 088590 1 DOWEL DIA 12 X 18L 33 083152 1 GEROTER INNER 6 5 34 076381 2 BOLT CON ROD 36 021705B 1 ASSY CYL HD GDS STS 37 0C3590 1...

Page 46: ...68 60 4 73 67 72 42 41 45 44 66 65 57 75 7 58 56 63 64 32 43 48 49 38 37 35 47 60 51 53 54 52 62 61 59 59 31 34 36 50 16 13 30 32 85 84 66 89 87 88 86 66 83 Section 6 Exploded Views and Parts Lists IM...

Page 47: ...3 8 16 X 1 1 4 ITEM PART NO QTY DESCRIPTION 46 086705 1 PLATE DIVIDER 47 090192 1 WASHER CARBURETOR 48 089477 1 CLIP ADJUSTMENT 49 086706 1 ROD THROTTLE CONTROL 50 089478 1 SNAP RETAINING 51 078609 2...

Page 48: ...SPRING REGULATOR 45N M 29MM 16 0C4643A 1 INLET TWIN REG 11 11 DIA 17 0C6066 1 SEAL INLET REGULATOR 18 0C5968 1 SUPPORT INLET SEAL 19 0C5759 1 PIN PIVOT ARM 20 0C5761 1 LEVER REGULATOR 21 0C6069 1 GAS...

Page 49: ...Section 7 Installation Diagram IMPACT 36 plus II Recreational Vehicle Generator Major Features and Dimensions Drawing No 0F1119 Generac Power Systems Inc 47...

Page 50: ...your engine or a part component thereof has failed due to abuse neglect improper maintenance or unap proved modifications or the use of counterfeit and or grey market parts not made supplied or appro...

Page 51: ...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 emi...

Page 52: ...anty 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 utili...

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