Generac QT04524ANSX User Manual

Owner's Manual

Stationary Emergency Generator

nNOT INTENDED FOR USE IN CRITICAL LIFE SUPPORT

APPLICATIONS.

ONLY QUALIFIED ELECTRICIANS OR CONTRACTORS SHOULD ATTEMPT INSTALLATION! DEADLY EXHAUST FUMES! OUTDOOR INSTALLATION ONLY!

This manual should remain with the unit.

2.4L 45kW Models EPA Certified

Part.No0H7318

Cover193.RevA04/10

Table of Contents

SECTION	PAGE
INTRODUCTION ...........................................................	1-1
Read this Manual Thoroughly .......................................................	1-1
Operation and Maintenance..........................................................	1-1
How to Obtain Service .................................................................	1-1
SAFETY RULES ............................................................	1-2
GENERAL INFORMATION............................................	2-1
Identification Record ........................................................................	2-1
Data Label ...................................................................................	2-1
EQUIPMENT DESCRIPTION ........................................	3-1
Equipment Description .....................................................................	3-1
Engine Oil Recommendations...........................................................	3-1
Coolant Recommendations ..............................................................	3-1
ENGINE PROTECTIVE DEVICES .................................	4-1
Engine Protective Devices ................................................................	4-1
High Coolant Temperature Sender ................................................	4-1
Low Coolant Level Sensor............................................................	4-1
Low Oil Pressure Switch ..............................................................	4-1
Overcrank Shutdown....................................................................	4-1
Overspeed Shutdown ...................................................................	4-1
RPM Sensor Loss Shutdown........................................................	4-1
DC Fuses .....................................................................................	4-1
FUEL SYSTEM ..............................................................	5-1
Fuel Requirements .......................................................................	5-1
Natural Gas Fuel System ..............................................................	5-1
Propane Vapor Withdrawal Fuel System........................................	5-1
LP Liquid Fuel System..................................................................	5-1
SPECIFICATIONS .........................................................	6-1
Stationary Emergency Generator ..................................................	6-1
Engine .........................................................................................	6-1
Cooling System............................................................................	6-1
Fuel System .................................................................................	6-1
Electrical System .........................................................................	6-1
Weather and Maintenance Kits .....................................................	6-2
Reconfiguring the Fuel System .........................................................	6-2
Fuel System .................................................................................	6-2
Control Panel ...............................................................................	6-2
GENERAL INFORMATION............................................	7-1
Alternator AC Lead Connections.......................................................	7-1
Four-lead, Single-phase Stator......................................................	7-1
Alternator Power Winding Connections.............................................	7-1
3-phase Alternators ("Y" Configuration) ........................................	7-1
3-phase Alternators ("Delta" Configuration)...................................	7-2
CONTROL PANEL.........................................................	8-1
Control Panel Interface.....................................................................	8-1
Using the Auto/Off/Manual Switch ................................................	8-1
Activate the Generator......................................................................	8-1
Display Interface Menus...................................................................	8-1
Activation Chart ...........................................................................	8-2
Setting the Exercise Timer................................................................	8-3
Low Speed Exercise.....................................................................	8-3
User Adjustable Settings ..................................................................	8-3
Fuel Conversion ...............................................................................	8-3
Operation .........................................................................................	8-3
Automatic Transfer Operation .......................................................	8-3
Sequence of Automatic Operation ................................................	8-4
Crank Cycles and Overcrank Shutdown ........................................	8-4
Auto Start ........................................................................................	8-4
Manual Start ....................................................................................	8-4

Alarm and Warning Messages..........................................................	8-4
Low Oil Pressure Shutdown Alarm ...............................................	8-4
High Coolant Temperature Shutdown Alarm..................................	8-4
Overcrank Shutdown Alarm..........................................................	8-4
Overspeed Shutdown Alarm .........................................................	8-4
RPM Sensor Failure Shutdown Alarm ...........................................	8-4
Under-frequency Shutdown Alarm................................................	8-5
Low Battery Alarm .......................................................................	8-5
Low Battery Warning....................................................................	8-5
Low Coolant Level Alarm .............................................................	8-5
Missing Cam Pulse Alarm ............................................................	8-5
Missing Crank Pulse Alarm ..........................................................	8-5
Low Fuel Pressure Warning..........................................................	8-5
Governor Sensor Fault Alarm........................................................	8-5
Wiring Error Alarm .......................................................................	8-5
Undervoltage Alarm .....................................................................	8-5
Overvoltage Alarm .......................................................................	8-6
Internal Failure Shutdown Alarm ...................................................	8-6
Canbus Alarm ..............................................................................	8-6
Ignition Alarm ..............................................................................	8-6
Maintenance Warning...................................................................	8-6
Alarm Cancel ...............................................................................	8-6
Common Alarm Relay ......................................................................	8-6
Maintenance Alerts ..........................................................................	8-6
Menu System...................................................................................	8-7
OPERATION..................................................................	9-1
Stationary Emergency Generator Control and Operation....................	9-1
Operating Unit with Manual Transfer Switch......................................	9-1
Engine Start-up and Transfer........................................................	9-1
Retransfer and Shutdown.............................................................	9-1
Operating Unit with Automatic Transfer Switch .................................	9-1
MAINTENANCE...........................................................	10-1
General Maintenance......................................................................	10-1
Check Engine Oil........................................................................	10-1
Changing Engine Oil ...................................................................	10-1
Cooling Intake/Outlet ..................................................................	10-1
Inspect Cooling System .............................................................	10-1
Engine Coolant...........................................................................	10-2
Coolant Change .........................................................................	10-2
Overload Protection for Engine DC Electrical System ..................	10-2
Exercise System ........................................................................	10-2
Perform Visual Inspection ..........................................................	10-2
Inspect Exhaust System .............................................................	10-2
Check Fan Belt...........................................................................	10-2
Inspect Engine Governor ............................................................	10-2
Changing the Engine Air Filter.....................................................	10-2
Spark Plugs ...............................................................................	10-3
Battery Maintenance ..................................................................	10-3
Battery Replacement ..................................................................	10-3
Battery Fluid...............................................................................	10-3
Cleaning the Stationary Emergency Generator ............................	10-3
SERVICE SCHEDULE .................................................	11-1
TROUBLESHOOTING .................................................	12-1
Troubleshooting Guide....................................................................	12-1
EMISSIONS WARRANTY............................................	13-1
NOTES
EXPLODED VIEWS & PARTS LISTS
WIRING DIAGRAMS & SCHEMATICS

Content048.RevA05/10

Safety Instructions

nSAVE THESE INSTRUCTIONS – The manufacturer suggests that these rules for safe operation be copied and posted in potential hazard areas. Safety should be stressed to all operators, potential operators, and service and repair technicians for this equipment.

INTRODUCTION

Thank you for purchasing this model of the stationary emergency generator product line.

Every effort was expended to make sure that the information and instructions in this manual were both accurate and current at the time the manual was written. However, the manufacturer reserves the right to change, alter or otherwise improve this product(s) at any time without prior notice.

READ THIS MANUAL THOROUGHLY

If any portion of this manual is not understood, contact the nearest 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 service or operation that may be hazardous if performed incorrectly or carelessly. Observe them carefully. Their definitions are as follows:

INDICATES A HAZARDOUS SITUATION OR ACTION WHICH, IF NOT AVOIDED, WILL RESULT IN DEATH OR SERIOUS INJURY.

Indicates a hazardous situation or action which, if not avoided, could result in death or serious injury.

Indicates a hazardous situation or action which, if not avoided, could result in minor or moderate injury.

NOTE:

Notes contain additional information important to a procedure and will be found within the regular text body of this manual.

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 to preventing accidents.

Four commonly used safety symbols accompany the DANGER, WARNING and CAUTION blocks. The type of information each indicates is as follows:

nThis symbol points out important safety information that, if not followed, could endanger personal safety and/or property of others.

This symbol points out potential explosion hazard.

This symbol points out potential fire hazard.

This symbol points out potential electrical shock hazard.

The operator is responsible for proper and safe use of the equipment. The manufacturer strongly recommends that the operator read this Owner's Manual and thoroughly understand all instructions before using this equipment. The manufacturer also strongly recommends instructing other users to properly start and operate the unit. This prepares them if they need to operate the equipment in an emergency.

For safety reasons, the manufacturer recommends that this equipment be installed, serviced and repaired by a Service Dealer or other competent, qualified electrician or installation technician who is familiar with applicable codes, standards and regulations. The operator also must comply with all such codes, standards and regulations.

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 Service Dealer. Normal maintenance service and replacement of parts are the responsibility 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 ensure a minimum number of problems and keep operating expenses at a minimum. See a Service Dealer for service aids and accessories.

Operating instructions presented in this manual assume that the generator electric system has been installed by a Service Dealer or other competent, qualified contractor. Installation of this equipment is not a “do-it-yourself” project.

HOW TO OBTAIN SERVICE

When the generator requires servicing or repairs, simply contact a Service Dealer for assistance. Service technicians are factorytrained and are capable of handling all service needs.

When contacting a dealer about parts and service, always supply the complete Model Number, Serial Number and Type Code (where applicable) from the DATA LABEL that is affixed to the unit.

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Safety Instructions

SAFETY RULES

Study these SAFETY RULES carefully before installing, operating or servicing this equipment. Become familiar with this Owner’s 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.

The manufacturer cannot anticipate every possible circumstance 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 a procedure, work method or operating technique is used that the manufacturer does not specifically recommend, ensure that it is safe for others. Also make sure the procedure, work method or operating technique utilized does not render the generator unsafe.

nDespite 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 install, operate or maintain this equipment.

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.

nParts of the generator are rotating and/or hot during operation. Exercise care near running generators.

GENERAL HAZARDS

•For safety reasons, the manufacturer recommends that this equipment be installed, serviced and repaired by a Service Dealer or other competent, qualified electrician or installation technician who is familiar with applicable codes, standards and regulations. The operator also must comply with all such codes, standards and regulations.

•Installation, operation, servicing and repair of this (and related) equipment must always 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, operated and serviced in accordance with the manufacturer’s instructions and recommendations. Following installation, do nothing that might render the unit unsafe or in noncompliance with the aforementioned codes, standards, laws and regulations.

•The engine exhaust fumes contain carbon monoxide gas, which can be DEADLY. This dangerous gas, if breathed in sufficient concentrations, can cause unconsciousness or even death. For that reason, adequate ventilation must be provided. This should be considered prior to installing the generator. The unit should be positioned to direct exhaust gasses safely away from any building where people, animals, etc., will not be harmed. Any exhaust stacks that ship loose with the unit must be installed properly per the manufacturer's instruction, and in strict compliance with applicable codes and standards.

•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 in any room or building housing the generator to prevent buildup of explosive gases and to ensure correct generator operation. Do not alter the installation or permit even partial blockage of ventilation provisions, as this can seriously affect safe operation of the generator.

•Keep the area around the generator clean and uncluttered. Remove any materials that could become hazardous.

•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 promptly repair or replace all worn, damaged or defective parts using only factoryapproved parts.

•Before performing any maintenance on the generator, disconnect its battery cables to prevent accidental start-up. Disconnect the cable from the battery post indicated by a NEGATIVE, NEG or (–) first. 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.

ELECTRICAL HAZARDS

•All stationary emergency generators covered by this manual produce dangerous electrical voltages and can cause fatal electrical shock. Utility power delivers extremely high and dangerous voltages to the transfer switch as well as the generator. Avoid contact with bare wires, terminals, connections, etc., on the generator as well as the transfer switch, if applicable. 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.

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1-2

Safety Instructions

•If personnel must stand on metal or concrete while installing, operating, servicing, adjusting or repairing this equipment, place insulative mats over a dry wooden platform. Work on the equipment only while standing on such insulative mats.

•The National Electrical Code (NEC) requires the frame and external electrically conductive parts of the generator to be connected to an approved earth ground. This grounding will help prevent dangerous electrical shock that might be caused by a ground fault condition in the generator or by static electricity. Never disconnect the ground wire.

FIRE HAZARDS

•Keep a fire extinguisher near the generator at all times. Do NOT use any carbon tetra-chloride type extinguisher. Its fumes are toxic, and the liquid can deteriorate wiring insulation. 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

•Wire gauge sizes of electrical wiring, cables and cord sets must be adequate to handle the maximum electrical current (ampacity) to which they will be subjected.

•Before installing or servicing this (and related) equipment, make sure that all power voltage supplies are positively turned off at their source. Failure to do so will result in hazardous and possibly fatal electrical shock.

•Connecting this unit to an electrical system normally supplied by an electric utility shall be by means of a transfer switch so as to isolate the generator electric system from the electric utility distribution system when the generator is operating. Failure to isolate the two electric system power sources from each other by such means will result in damage to the generator and may also result in injury or death to utility power workers due to backfeed of electrical energy.

•Stationary emergency generators installed with an automatic transfer switch will crank and start automatically when normal (utility) source voltage is removed or is below an acceptable preset level. To prevent such automatic start-up and possible injury to personnel, disable the generator’s automatic start circuit (battery cables, etc.) before working on or around the unit. Then, place a “Do Not Operate” tag on the generator control panel and on the transfer switch.

•In case of 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.

•Properly ventilate any room or building housing the generator to prevent build-up of explosive gas.

•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.

• These generators may operate using one of several types of fuels. 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. Fuel supply lines must be properly installed, purged and leak tested according to applicable fuel-gas codes before placing this equipment into service.

•Diesel fuels are highly FLAMMABLE. Gaseous fluids such as natural gas and liquid propane (LP) gas are extremely EXPLOSIVE. Natural gas is lighter than air, and LP gas is heavier than air; install leak detectors accordingly.

CALIFORNIA PROPOSITION 65 WARNING

Engine exhaust and some of its constituents are known to the State of California to cause cancer, birth defects and other reproductive harm.

CALIFORNIA PROPOSITION 65 WARNING

This product contains or emits chemicals known to the State of California to cause cancer, birth defects and other reproductive harm.

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General Information

IDENTIFICATION RECORD

DATA LABEL

Every generator set has a DATA LABEL that contains important information pertinent to the generator. The data label, which can be found attached to the generator’s lower connection box, lists the unit’s serial number and its rated voltage, amps, wattage capacity, phase, frequency, rpm, power factor, production date, etc.

NOTE:

For actual information related to this particular model, please refer to the Manual Drawing Listing located at the end of this manual, or to the data label affixed to the unit.

Stationary Emergency Generator Model and Serial Number

This number is the key to numerous engineering and manufacturing details pertaining to your unit. Always supply this number when requesting service, ordering parts or seeking information.

Data Label

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Equipment Description

EQUIPMENT DESCRIPTION

This equipment is a revolving field, alternating current Stationary Emergency Generator. It is powered by a gaseous fueled engine operating at 1800 rpm for 4-pole direct drive units, 3600 rpm for 2-pole direct drive units and 2300 - 3000 rpm for quiet drive gear units. See the Specifications section for exact numbers. The unit comes complete with a sound attenuated enclosure, internally mounted muffler, control console, mainline circuit breaker, battery charger, and protective alarms as explained in the following paragraph.

All AC connections, including the power leads from the alternator, 120 volt battery charger input and control connections to the transfer switch are available in the main connection box.

The Stationary Emergency Generator incorporates the following alternator features:

•Rotor and Stator insulation class is rated as defined by NEMA MG1-32.6, NEMA MG1-1.66. The generator is self ventilated and drip-proof constructed. Refer to the Specifications section or the data label for the class ratings.

•The voltage waveform deviation, total harmonic content of the AC waveform and telephone influence factor have been evaluated and are acceptable according to NEMA MG1-32.

ENGINE OIL RECOMMENDATIONS

The unit has been filled with 5W-20 engine oil at the factory. Use a high-quality detergent oil classified “For Service SJ or SH.” Detergent oils keep the engine cleaner and reduce carbon deposits. When changing the engine oil, be sure to use 5W-30 engine oil.

nAny attempt to crank or start the engine before it has been properly serviced with the recommended oil may result in an engine failure.

NOTE:

If not already equipped, it is strongly recommended to use the optional Cold Weather Start Kit for temperatures below 32° F. The part number for the Cold Weather Start Kit can be found in the Specifications section or by contacting an authorized dealer. The oil grade for temperatures below 32° F is 5W-30 synthetic oil.

COOLANT RECOMMENDATIONS

Use a mixture of half low silicate ethylene glycol base anti-freeze and deionized water. Cooling system capacity is listed in the specifications. Use only deionized water and only low silicate anti-freeze. If desired, add a high quality rust inhibitor to the recommended coolant mixture. When adding coolant, always add the recommended 50-50 mixture.

nDo not use any chromate base rust inhibitor with ethylene glycol base anti-freeze or chromium hydroxide (“green slime”) forms and will cause overheating. Engines that have been operated with a chromate base rust inhibitor must be chemically cleaned before adding ethylene glycol base anti-freeze. Using any high silicate anti-freeze boosters or additives will also cause overheating. The manufacturer also recommends that any soluble oil inhibitor is NOT used for this equipment.

nDo not remove the radiator pressure cap while the engine is hot or serious burns from boiling liquid or steam could result.

nEthylene glycol base antifreeze is poisonous.

Do not use mouth to siphon coolant from the radiator, recovery bottle or any container. Wash hands thoroughly after handling. Never store used antifreeze in an open container because animals are attracted to the smell and taste of antifreeze even though it is poisonous to them.

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Engine Protective Devices

ENGINE PROTECTIVE DEVICES

The Stationary Emergency Generator may be required to operate for long periods of time without an operator on hand to monitor such engine conditions as coolant temperature, oil pressure or rpm. For that reason, the engine has several devices designed to protect it against potentially damaging conditions by automatically shutting down the unit when the oil pressure is too low, the coolant temperature is too high, the coolant level is too low, or the engine is running too fast.

NOTE:

Engine protective switches and sensors are mentioned here for the reader’s convenience. Also refer to the applicable control panel manual for additional automatic engine shutdown information.

HIGH COOLANT TEMPERATURE SENDER

An analog coolant temperture sender, located in the engine's cooling system will cause an engine shutdown if the temperature should exceed approximately 125° C (257° F). The generator will automatically restart once the temperature has returned to a safe operating level.

LOW COOLANT LEVEL SENSOR

To prevent overheating, the engine has a low coolant level sensor. If the level of engine coolant drops below the level of the low coolant level sensor, the engine automatically shuts down.

LOW OIL PRESSURE SWITCH

This switch has normally closed contacts that are held open by engine oil pressure during cranking and operating. Should oil pressure drop below the 8 psi range, switch contacts close, and the engine shuts down. The unit should not be restarted until oil is added, and the AUTO/OFF/MANUAL switch must be turned to OFF and then back to AUTO.

OVERCRANK SHUTDOWN

After a prespecified duration of cranking, this function ends the cranking if the engine has failed to start. The overcrank message will turn ON. Turn OFF the AUTO/OFF/MANUAL switch, then turn switch back to AUTO to reset the generator control board.

NOTE:

If the fault is not corrected, the overcrank feature will continue to activate.

Approximate Crank Cycle Times

•15 seconds ON

•7 seconds OFF

•7 seconds ON

•7 seconds OFF

•Repeat for 45 seconds

•Approximately 90 seconds total.

OVERSPEED SHUTDOWN

A speed circuit controls engine cranking, start-up, operation and shutdown. Engine speed signals are delivered to the circuit board whenever the unit is running. Should the engine overspeed above a safe, preset value, the circuit board initiates an automatic engine shutdown. Contact the nearest Authorized Dealer if this failure occurs.

RPM SENSOR LOSS SHUTDOWN

If the speed signal to the control panel is lost, engine shutdown will occur.

DC FUSES

A fuse (7.5 amp) is located on the control panel. It protects the panel components from damaging overload. Always remove this fuse before commencing work on the generator. The unit will not start or crank if the fuse is blown.

A fuse (25 amp) is located in the engine wire harness adjacent to the DC alternator. It is used to prevent circuit failure due to DC alternator falure. It will also protect the system in the event of a wiring short-dircuit. If this fuse is blown, the generator will not operate. Replace these fuses with the same size, type, and rating.

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Fuel System

FUEL SYSTEM

FUEL REQUIREMENTS

The Stationary Emergency Generator may be equipped with one of the following fuel systems:

•Natural gas fuel system

•Propane vapor (PV) fuel system

•Liquid propane (LP) fuel system

Recommended fuels should have a Btu content of at least 1,000 Btu's per cubic foot for natural gas; or at least 2,520 Btu's per cubic foot for LP gas. Ask the fuel supplier for the Btu content of the fuel.

Required fuel pressure for natural gas is 5 inches to 14 inches water column (0.18 to 0.5 psi); and for liquid propane, 5 inches to 14 inches of water column (0.18 to 0.5 psi).

NOTE:

Any piping used to connect the generator to the fuel supply should be of adequate size to ensure the fuel pressure NEVER drops below five inches water column for natural gas or 5 inches water column for propane vapor for all load ranges. The fuel supply piping shall be sized according to the installation manual using the fuel consumption requirements identified in the Specifications section of the Owner's Manual.

NOTE:

It is the responsibility of the installer to make sure that only the correct recommended fuel is supplied to the generator fuel system. Thereafter, the owner/operator must make certain that only the proper fuel is supplied.

NATURAL GAS FUEL SYSTEM

Natural gas is supplied in its vapor state. In most cases, the gas distribution company provides piping from the main gas distribution line to the standby generator site. The following information applies to natural gas fuel systems.

•Gas pressure in a building is usually regulated by national, state and local codes.

•To reduce gas pressure to a safe level before the gas enters a building, a primary regulator is needed. The natural gas supplier may or may not supply such a regulator.

•It is the responsibility of the gas supplier to make sure sufficient gas pressure is available to operate the primary regulator.

•Gas pressure at the inlet to the fuel shutoff solenoid should not exceed approximately 14 inches water column (0.5 psi).

PROPANE VAPOR WITHDRAWAL FUEL SYSTEM

This type of system utilizes the vapors formed above the liquid fuel in the supply tank. Approximately 10 to 20 percent of the tank capacity is needed for fuel expansion from the liquid to the vapor state. The vapor withdrawal system is generally best suited for smaller engines that require less fuel. The installer should be aware of the following:

•When ambient temperatures are low and engine fuel consumption is high, the vapor withdrawal system may not function efficiently.

•Ambient temperatures around the supply tank must be high enough to sustain adequate vaporization, or the system will not deliver the needed fuel volume.

•In addition to the cooling effects of ambient air, the vaporization process itself provides an additional cooling effect.

LP LIQUID FUEL SYSTEM

LP is supplied as a liquid in pressure tanks. It is usually made up of propane, butane, or a mixture of the two gases. Propane tends to vaporize readily even at temperatures as low as -20° F (-29° C). However, butane reverts to its liquid state when temperatures drop below 32° F (0° C).

LP in a liquid withdrawal system must be converted to its gaseous state before it is introduced into the engine carburetor. A vaporizerconverter is generally used to accomplish this. In such a converter, heated engine coolant is ported through the converter to provide the necessary heat for conversion of the fuel from a liquid to a gaseous state.

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Specifications

SPECIFICATIONS

STATIONARY EMERGENCY GENERATOR

Type.............................................................................	Synchronous
Rotor Insulation ...................................................................	Class H
Stator Insulation ..................................................................	Class H
Telephone Interference Factor (TIF)..........................................	< 50
Alternator Output Leads 3-phase...........................................	4-wire
Bearings .........................................................................	Sealed Ball
Coupling .......................................................................	Flexible Disc
Load Capacity (Standby Rating) ............................................	45kW*

*NOTE: Generator rating and performance in accordance with ISO8528-5, BS5514, SAE J1349, ISO3046 and DIN 6271 Standards. KW rating is based on LPG fuel and may derate with natural gas.

Excitation System....................................................................			Direct
Generator Output Voltage/kW - 60 Hz	kW	Amp	CB Size
120/240V, 1-phase, 1.0 pf	45	188	200
120/208V, 3-phase, 0.8 pf	45	156	175
120/240V, 3-phase, 0.8 pf	45	135	150
277/480V, 3-phase, 0.8 pf	45	68	80
Generator Locked Rotor KVA Available @ Voltage Dip of 35%
Single-phase or 208, 3-phase (45kW) ...............................			72 KVA
480V, 3-phase (45kW)........................................................			80 KVA

ENGINE

Make...................................................................................		Generac
Model.....................................................................................		In Line
Cylinders and Arrangement............................................................		4
Displacement.......................................................................		2.4 Liter
Bore......................................................................................		3.41 in.
Stroke ...................................................................................		3.94 in.
Compression Ratio...............................................................		9.5-to-1
Air Intake System ...............................................		Naturally Aspirated
Valve Seats.......................................................................		Hardened
Lifter Type ..........................................................................		Hydraulic
Spark Plug Gap.............................	1.07-1.17mm (0.042-0.046 inch)
Engine Parameters
Rated Synchronous RPM..............................................		60 Hz, 3600
Exhaust System
Exhaust Flow at Rated Output 60 Hz (45kW)		..................... 420 cfm
Exhaust Temp. at Rated Output (45kW)..............................		1100° F
Combustion Air Requirements (Natural Gas)
Flow at rated power, 60 Hz (45kW).....................................		144 cfm
Governor
Type..................................................................................		Electronic
Frequency Regulation ...................................................		Isochronous
Steady State Regulation......................................................		± 0.25%

Engine Lubrication System
Type of Oil Pump......................................................................	Gear
Oil Filter ...............................................	Full Flow Spin-on, Cartridge
Crankcase Oil Capacity..........	5.25 U.S. qts. (including filter capacity)

COOLING SYSTEM

Type...................................................	Pressurized Closed Recovery
Water Pump....................................................................		Belt Driven
Fan Speed .........................................................................		2150 rpm
Fan Diameter.....................................................................		22 inches
Fan Mode ................................................................................		Puller
Air Flow (inlet air including alternator and		2725 ft3/min.
combustion air)...........................................................
Coolant Capacity ........................................................		(3.0 U.S. gal.)
Heat Rejection to Coolant (45kW)..............................		193,000 Btu/h
Maximum Operating Air Temp. on Radiator ..............		60° C (150° F)
Maximum Ambient Temperature................................		50° C (140° F)

FUEL SYSTEM

Type of Fuel.........................................			Natural Gas, Propane Vapor
Carburetor ......................................................................					Down Draft
Secondary Fuel Regulator .................................................					Standard
Fuel Shut-off Solenoid........................................................					Standard
Operating Fuel Pressure ......................			5 in. - 14 in. Water Column
Fuel Consumption - ft3/hr (Natural Gas/LPV)
Exercise		25%	50%	75%	100%
	Cycle	Load	Load	Load	Load
45kW	65/25	210/83	380/151	545/216	730/290
ELECTRICAL SYSTEM
Battery Charge Alternator ............................................				12V, 30 Amp
Static Battery Charger.........................................................					2.5 Amp
Recommended Battery......................................				Group 26, 525CCA
System Voltage.....................................................................					12 Volts
Voltage Regulator
Type..................................................................................					Electronic
Sensing........................................................................				Single-phase
Regulation ................................................................................					± 1%
Features ..............................................			Adjustable Voltage and Gain
Power Adjustment for Ambient Conditions
Temperature Deration
3% for every 10° C above °C (45kW) ........................................					25
1.65% for every 10° above °F (45kW) .......................................					77
Altitude Deration
1% for every 100 m above m (45kW) ......................................					183
3% for every 1000 ft. above ft. (45kW).....................................					600
Controller .................................................................					Nexus

6-1

GenSpec084.RevA05/10

Specifications

WEATHER AND MAINTENANCE KITS

To keep the generator running at its peak, the following kits are offered:

•Cold Weather Kit

~Recommended for climates with temperatures below 32° F.

•Extreme Cold Weather Kit

~Recommended Block Heater Kit for protection in temperatures below 32° F.

•Scheduled Maintenance Kit

~Kit includes the recommended parts to maintain the generator. Refer to the Service Schedule for regular maintenance intervals.

For additional information, or to order any of these kits, please contact an Authorized Service Dealer or Customer Service Representative.

RECONFIGURING THE FUEL SYSTEM

NOTE:

All models are configured to run on natural gas from the factory.

Before the generator can be operated using a LP fuel source, the fuel system and control panel (refer to the installation drawing for location) must be reconfigured. The steps to reconfigure the generator from a natural gas (NG) to a liquidified petroleum (LP) fuel source are as follows:

FUEL SYSTEM

1.Turn the main gas supply off and disconnect the battery.

2.Remove the carburetor fuel hose from the outlet port of the demand regulator (see Figure 6.1).

3.Disconnect the power wires from the fuel solenoid located on top of the regulator assembly by removing the screw on the front of the connector and pulling the connector forward, away from the solenoid body.

4.Loosen the spring clamp on the small fuel enrichment line and remove the hose from the hose barb.

5.Remove the black pipe assembly from the outlet port of the demand regulator. The solenoid assembly may need to be removed before performing this operation (Figure 6.1).

6.Remove the NG fuel jet (loosen counter clockwise) from the outlet port.

7.Remove the LP fuel jet (loosen counter clockwise) from the jet keeper port on the side of the regulator housing. Install this jet into the outlet port in the regulator casting.

NOTE:

The jet sizes are stamped on the individual jets. The larger jet size is used for running on NG.

8.Install the previously removed NG jet into the jet keeper port on the side of the regulator housing.

9.Install the previously removed black pipe onto the outlet port of the demand regulator. Use pipe sealant on the pipe threads.

10.Reverse steps 1-4 in this procedure to reactivate the demand regulator.

11.Follow the instructions in the Control Panel section.

nSerious injury, including death, or damage may occur if not configured properly. Please consult an Authorized Dealer with any questions.

Figure 6.1 — Reconfigure the Fuel System

CONTROL PANEL

The FUEL TYPE must be reconfigured in the control panel to finalize the conversion process. To access the fuel selection menu, select EDIT from the main control panel menu. Scroll through the prompts until FUEL TYPE is displayed. Press ENTER to select this field, then toggle the proper fuel type and press ENTER again to accept. The fuel conversion is now complete.

nWhenever the Generator's Fuel Regulator is converted from one Fuel type to the other, make sure to configure the Control Panel for the correct Fuel type.

GenSpec084.RevA05/10

6-2

General Information

ALTERNATOR AC LEAD

CONNECTIONS

The electrical wires in the unit’s AC connection (lower) panel should be installed according to the number of leads and the voltage/phase required for the application. The voltage and phase are described on the generator data label. The number of lead wires can be identified using the Specifications section and the power output rating on the generator data label. For example, if the generator produces 130kW, 277/480 Volt, 3-phase power, the generator has 12 alternator output leads. Figure 7.3 describes the stator power winding connection for the generator.

FOUR-LEAD, SINGLE-PHASE STATOR

Four-lead alternators (see Figure 7.1) are designed to supply electrical loads with voltage code “A” (240V, 1-phase, 60 Hz). Electrical power is produced in the stator power windings. These windings were connected at the factory to the main circuit breaker as shown in Figure 7.1.

The rated voltage between each circuit breaker terminal is 240V. The rated voltage between each circuit breaker terminal and the neutral point 00 is 120V.

Figure 7.1 — Four-lead, Single-phase Stator

7-1

ALTERNATOR POWER WINDING CONNECTIONS

3-PHASE ALTERNATORS ("Y" CONFIGURATION)

The Stationary Emergency Generator is designed to supply 3-phase electrical loads. Electric power is produced in the alternator power windings. These windings were connected at the factory to the main circuit breaker with a “Y” configuration as shown in Figures 7.2 through 7.6.

The rated voltage between circuit breaker terminals E1-E2, E1-E3 and E2-E3 is 480V, 208V or 600V depending on the model.

The rated voltage between each circuit breaker terminal and the neutral point 00 is 277V, 120V, or 346V depending on the model.

Figure 7.2 — Stator Power Winding

Connections - 3-phase, 277/480V (6 Lead)

E1

S1

INTERNAL

CONNECTIONS

L - L

	S6	S4
		00 (NEUTRAL)
		S5
S3			S2
E3		L - N	E2

Figure 7.3 — Stator Power Winding

Connections - 3-phase, 277/480V (12 Lead)

	E1
S1
	S4
	S7
			L - L
S12	S10
S9	S11	S8
S6		S5
S3			S2
E3		L - N	E2
		05/10	ACConn007.RevB

General Information

Figure 7.4 — Stator Power Winding

Connections - 3-phase, 120/208V (6 Lead)

INTERNAL CONNECTIONS

E1

S1 S1

	S4	S4	L-L
			00 (NEUTRAL)
	S6	S5

S3	S6	S5	S2

E3	S2	E2
S3
	L-N

Figure 7.5 — Stator Power Winding

Connections - 3-phase, 120/208V (12 Lead)

E1

S7 S1

	S10	S4		L-L
	S12	S5
S9	S6	S11		S2
E3	S3		S8	E2
			L-N

Figure 7.6 — Stator Power Winding

Connections - 3-phase, 346/600V (6 Lead)

E1

S1

INTERNAL

CONNECTIONS

		L - L
S6	S4
	00 (NEUTRAL)
	S5
S3		S2
E3	L - N	E2

05/10

ACConn007.RevB

3-PHASE ALTERNATORS ("DELTA" CONFIGURATION)

The Stationary Emergency Generator is designed to supply 3-phase electrical loads. Electric power is produced in the alternator power windings. These windings were connected at the factory to the main circuit breaker with a “Delta” configuration as shown in Figures 7.7 and 7.8.

The rated voltage between circuit breaker terminals E1-E2, E1-E3 and E2-E3 is 240V.

The rated voltage between E1 or E3 and the neutral point 00 is 120V.

Figure 7.7 — Stator Power Winding

Connections - 3-phase, 120/240V (6 Lead)

E2

S2 S6

INTERNAL

CONNECTIONS

L - L

S5 S3

E1

S1

S4

E3

L - N 00 (NEUTRAL)

Figure 7.8 — Stator Power Winding

Connections - 3-phase, 120/240V (12 Lead)

	E2
S2	S12
S5	S9
	L - L
S8	S6

S11			S3
E1	S1	S10	E3
		L - N
		00 (NEUTRAL)

7-2

Control Panel

CONTROL PANEL INTERFACE

USING THE AUTO/OFF/MANUAL SWITCH

nWith the switch set to AUTO, the engine may crank and start at any time without warning. Such automatic starting occurs when utility power source voltage droops below a preset level or during the normal exercise cycle. To prevent possible injury that might be caused by such sudden starts, always set the switch to OFF and remove the fuse before working on or around the generator or transfer switch. Then, place a “DO NOT OPERATE” tag on the generator panel and on the transfer switch.

1.“AUTO” Position – Selecting this switch activates fully automatic system operation. It also allows the unit to automatically start and exercise the engine every seven days with the setting of the exercise timer (see the Setting the Exercise Timer section).

2.“OFF” Position – This switch position shuts down the engine. This position also prevents automatic operation.

3.“MANUAL” Position – Set the switch to MANUAL to crank and start the engine. Transfer to standby power will not occur unless there is a utility failure.

ACTIVATE THE GENERATOR

When battery power is applied to the generator during the installation process, the controller will turn ON and the LCD screen will illuminate. However, the generator still needs to be activated before it will automatically run in the event of a power outage.

Activating the generator is a simple one time process that is guided by the controller screen prompts. Once the product is activated, the controller screen will not prompt you again, even if you disconnect the generator battery.

To obtain the activation code, record the generator serial number and log onto www.activategen.com or call 1-888-9ACTIVATE and follow the steps to retrieve the activation code.

After obtaining your activation code, please complete the following steps at the generator’s control panel in the Activation Chart on the following page.

NOTE:

The generator will only run in manual until the passcode has been entered.

Upon power up, this controller will go through a system self test which will check for the presence of utility voltage on the DC circuits. This is done to prevent damage if the installer mistakenly connects AC utility power sense wires into the DC terminal block. If utility voltage is detected, the controller will display a warning message and lock out the generator, preventing damage to the controller. Power to the controller must be removed to clear this warning.

Utility voltage must be turned on and present at the N1 and N2 terminals inside the generator control panel for this test to be performed and pass.

NOTE:

DAMAGE CAUSED BY MISWIRING OF THE INTERCONNECT WIRES IS NOT WARRANTABLE!

This test will be performed each time the controller is powered up.

Next, the user must enter the minimum settings to operate. These settings are current date and time and exercise day and time. The maintenance intervals will be initialized (i.e. started) the first time the clock is set. If the clock is never set at power up, the maintenance intervals will be reset every time power is applied.

If a subsequent power loss (loss of battery power) occurs the Installation assistant will operate upon power restoration. The self test routine will be run and then the customer will be required to re-enter the time and date, as this is not retained during a power loss. The unit will not require re-activation.

DISPLAY INTERFACE MENUS

The LCD display is organized as detailed below:

•The “Home” page, this page is the default page which will be displayed if no keys are pressed for 30 seconds. This page normally shows the current Status message and the current date and time. The highest priority active Alarm and/or Warning will be automatically posted on this page as well as flashing the backlight when such an event is detected. In the case of multiple Alarms or Warnings, only the first message will be displayed. To clear an Alarm or Warning, see the Protection Systems section - Clear Alarm.

•The display backlight is normally off. If the user presses any key, the backlight will come on automatically and remain on for 30 seconds after the last key was pressed.

•The “Main Menu” page will allow the user to navigate to all other pages or sub-menus by using the Left/Right and Enter keys. This page can be accessed at any time with several presses of the dedicated Escape key. Each press of the Escape key takes you back to the previous menu until the main menu is reached. This page displays the following options: HISTORY; STATUS; EDIT; AND DEBUG. (See the Appendix - "Menu System".)

8-1

CntrlNex001.RevA05/10

Control Panel

ACTIVATION CHART

CHOOSE LANGUAGE		TROUBLESHOOTING
Display Reads:	Use ARROW keys to scroll to desired lan-	If the wrong language is chosen, it can be
	guage. Press ENTER to select.	changed later using the “edit” menu.

Language

-English +

Escape Enter

Display Reads:			Press ENTER to begin the activation pro-	If ESCAPE is pressed instead of ENTER,
			cess.	your generator will only run in manual mode
Activate me (ENT) or				(for test purposes) and NOT ACTIVATED will
ESC to run in manual				be displayed. You will need to reconnect the
				battery and begin with Step 1.
Escape		Enter
Display Reads:			If you do not have your activation code,
			go to www.activategen.com or call
To Activate go to			1-888-9ACTIVATE (922-8482).
www.activategen.com			If you already have your activation code,
			wait 3-5 seconds for the next display.
Escape		Enter
ENTER ACTIVATION CODE (Passcode)				TROUBLESHOOTING
Display Reads:			Use ARROW keys to scroll and find the first
			number of your Activation Code.
Serial 123456789			Press ENTER to select.
Passcode XXXXX +/-			Repeat this step until all digits have been
			entered.
Escape		Enter	Use ESCAPE to correct previous digits.
Display Reads:			Activation is complete when all digits are	What happens if “Wrong Passcode Try
			entered above and your screen shows this	Again” appears?
“SELECT HOUR (0-23)”			display.	Re-enter the activation code. If a second
“-	6	+”	Follow the controller prompts to continue	attempt is unsuccessful, check the number
			setting the time function. Refer to your	against the code given on activategen.com.
Escape		Enter	Owner’s Manual with questions.	If it is correct and the generator will not
				accept it, contact 1-888-9ACTIVATE (922-
				8482).

CntrlNex001.RevA05/10

8-2

Control Panel

INSTALLATION ASSISTANT

Interconnect System Self Test Feature (follow the on-screen prompts).

Upon power up, this controller will go through a system self test which will check for the presence of utility voltage on the DC circuits. This is done to prevent damage if the installer mistakenly connects AC utility power sense wires into the DC terminal block. If utility voltage is detected, the controller will display a warning message and lock out the generator, preventing damage to the controller. Power to the controller must be removed to clear this warning.

Utility voltage must be turned on and present at the N1 and N2 terminals inside the generator control panel for this test to be performed and pass.

NOTE:

DAMAGE CAUSED BY MISWIRING OF THE INTERCONNECT WIRES IS NOT WARRANTABLE!

This test will be performed each time the controller is powered up.

Upon first power up of the generator, the display interface will begin an installation assistant. The assistant will prompt the user to set the minimum settings to operate. These settings are simply: Current Date/Time and Exercise Day/Time. The maintenance intervals will be initialized when the exercise time is entered.

The exercise settings can be changed at any time via the "EDIT" menu (see Appendix, "Menu System").

If the 12 volt battery is disconnected or the fuse removed, the Installation Assistant will operate upon power restoration. The only difference is the display will only prompt the customer for the current Time and Date.

IF THE INSTALLER TESTS THE GENERATOR PRIOR TO INSTALLATION, PRESS THE “ENTER” KEY TO AVOID SETTING UP THE EXERCISE TIME. THIS WILL ENSURE THAT WHEN THE CUSTOMER POWERS UP THE UNIT, HE WILL STILL BE PROMPTED TO ENTER AN EXERCISE TIME.

SETTING THE EXERCISE TIMER

This generator is equipped with an exercise timer. Once it is set, the generator will start and exercise every seven days, on the day of the week and at the time of day specified. During this exercise period, the unit runs for approximately 12 minutes and then shuts down. Transfer of loads to the generator output does not occur during the exercise cycle unless utility power is lost.

LOW SPEED EXERCISE

The standard start sequence will be initiated.

•All 1800 rpm units will exercise at 1400 RPM

•All 3600 rpm units will exercise at 1800 RPM

If utility is lost during exercise the controller will do the following:

•Wait for the “line interrupt period” for utility to return. If utility returns within the “line interrupt period”, continue to exercise at low RPM.

8-3

•If utility is still lost after the “line interrupt period”, run the engine up to normal RPM and transfer the load. At this time the controller will exit the exercise routine and assume full automatic operation.

USER ADJUSTABLE SETTINGS

	Setting	Factory	Minimum	Maximum	Increment
		Default	Setting	Setting
	Exercise	2 pm	00:00 (12 am)	23:59	1 min
	time			(11:59 pm)
	Exercise	Wed	Sun	Sat	1 day
	day
	Current	12 am	00:00 (12 am)	23:59	1 min
	Time			(11:59 pm)
	Current	Sun	Sun	Sat	1 day
	Day
	Current	Jan	Jan	Dec	1 month
	Month
	Current	2008	2008	2100	1 year
	Year
	Language	English	French	Spanish	N/A
	Contrast	80%	0%	100%	1%

FUEL CONVERSION

For fuel conversion steps, refer to the GenSpec section, RECONFIGURING THE FUEL SYSTEM.

OPERATION

This system is intended to supply standby power in the event of a utility failure. The control system will monitor the utility voltage to determine if stand-by power is required. Should the utility voltage fail, the generator will start and run normally, detaching from the utility and supplying the customer load from the generator. When utility power returns, the controller will re-transfer the customer load back to utility and shut down the generator.

AUTOMATIC TRANSFER OPERATION

To select automatic operation, do the following:

1.Make sure the transfer switch main contacts are set to their UTILITY position, i.e., loads connected to the utility power source.

2.Be sure that normal UTILITY power source voltage is available to transfer switch terminal lugs N1 and N2 (Refer to the Electrical Data section).

3.Set the generator’s AUTO/OFF/MANUAL switch to AUTO.

4.Set the generator’s main circuit breaker to its ON (or CLOSED) position.

With the preceding steps complete, the generator will start automatically when utility source voltage drops below a preset level. After the unit starts, loads are transferred to the standby power source. Refer to the Sequence of Automatic Operation section.

CntrlNex001.RevA05/10

Control Panel

SEQUENCE OF AUTOMATIC OPERATION

Initial Conditions: Generator in Auto ready to run, load being supplied by the Utility Source through the transfer switch.

1.When the utility voltage fails (falls below 60% of nominal), a 10-30 second (programmable) “line interrupt” delay timer is started. The factory set time delay is 10 seconds. If at the end of the line interrupt time the utility voltage is above 60% the engine will not crank. If the utility voltage is still below the 60% of nominal at the end of the line interrupt time, the unit will crank and start. If the unit cranks for more than 10 seconds and the utility voltage rises above 80% of nominal (programmed pickup voltage) and the unit has not started, the crank cycle will abort.

2.As soon as the unit starts a 5 second “warm-up” timer is initiated. When the warm-up timer expires the control will transfer the load to the generator (through the RTS switch) if the utility voltage is less than 80% of nominal. If the utility voltage is greater than the 80% of nominal at the end of the warm-up time the load will not be transferred to the generator and a one minute low-speed cool down period will start. At the end of the one minute cool down period the generator will stop.

3.Once the unit is running and the switch has transferred the load to the generator the unit will monitor utility voltage. When utility voltage returns (above the programmable pickup voltage, normally 80% of nominal), a 15 second “Return to Utility” timer will start. At the end of the return to utility time, if the utility voltage is still above the pickup voltage, the unit will transfer the load back to the utility source and run the unit through a one minute cool down period. When the cool down period is over the unit will shut down and be ready for the next outage.

4.If during the cool down period utility voltage should fall below 60% of nominal for the line interrupt delay period, the unit will transfer the load back to the generator and continue to monitor the utility.

CRANK CYCLES AND OVERCRANK SHUTDOWN

If the unit fails to start during a cranking period it will display the Overcrank Shutdown Alarm. The system will control the cranking cycles as follows:

The first crank cycle is a 16 second crank time followed by a 7 second rest. The next 5 cycles will be 7 seconds of cranking time each followed by a 7 second rest time.

If the unit fails to start by the end of the 6 crank/rest cycles the Overcrank Shutdown Alarm will display and the unit will not attempt to crank until the alarm is reset.

AUTO START

This unit is designed to automatically start in the event of a utility failure or brown out condition. Brown out is defined as utility voltage less than 60% nominal, while utility is considered good when it is restored to at least the pickup value, 80% of nominal. These levels are fixed. The “Line Interrupt period” is an adjustable parameter by the dealer. If 2-wire start mode is activated, the unit will start when 2-wire start is active.

MANUAL START

Allows the user to start and run the generator manually.

Transfer of the load to the generator will occur if utility is lost while the unit is running in the manual mode (only if activated).

ALARM AND WARNING MESSAGES

Alarms are defined as “Latching” which means they must be cleared before the alarm message on the screen will clear. They can be of type “Shutdown” or not and are logged in the alarm log. Alarms are all annunciated on the display).

Warnings are “Non Latching” meaning the message automatically clears when the warning condition goes away. Warnings can not be of type “Shutdown” but they are logged in the alarm log. Warnings are all annunciated on the display.

LOW OIL PRESSURE SHUTDOWN ALARM

There is a 10 second delay before oil pressure is monitored.

HIGH COOLANT TEMPERATURE SHUTDOWN ALARM

There is a 10 second delay before engine temperature is monitored.

Once running there is a 1/4 second delay before shut down. The limit is set at 125° C or 257° F.

OVERCRANK SHUTDOWN ALARM

Occurs if the engine has not started within the specified crank cycle.

OVERSPEED SHUTDOWN ALARM

Warning indicator is measured and calculated by the microprocessor. Overspeed is defined as +20% of nominal engine speed for 3 seconds, or +25% immediate.

Nominal engine speed = 60.0 Hz

RPM SENSOR FAILURE SHUTDOWN ALARM

During cranking: If the board does not see a valid RPM signal within four (4) seconds of cranking it will shut down and lock out on RPM sensor loss.

During running: If the RPM signal is lost for one full second the board will shut the engine down, wait 15 seconds, then re-crank the engine if in AUTO, it will not re-crank in MANUAL.

If no RPM signal is detected within the first four (4) seconds of cranking, the control board will shut the engine down and latch out on RPM sensor loss.

If the RPM signal is detected the engine will start and run normally. If the RPM signal is subsequently lost the control board will try two more re-cranks before latching out and flashing the RPM Sensor Failure message (if it is in AUTO).

CntrlNex001.RevA05/10

8-4

Control Panel

Figure 1 – Generator Control Panel

UNDER-FREQUENCY SHUTDOWN ALARM

After starting, if the generator stays under frequency for more than 30 seconds, it will shutdown.

MISSING CRANK PULSE ALARM

This is a shutdown alarm. The alarm will activate after 12 consecutive revs where crank pulses are missing.

LOW BATTERY ALARM

While running if the average battery voltage falls below 11.9 volts for one (1) minute, the low battery alarm will be displayed.

LOW FUEL PRESSURE WARNING

Fuel pressure is monitored by a digital sensor with a fixed setpoint of below five (5) inches water column.

LOW BATTERY WARNING

The microprocessor will continually monitor the battery voltage and display the Low Battery Voltage message if the battery voltage falls below 12.2 Volts for one (1) minute.

No other action is taken on a low battery warning condition. The warning will automatically clear if the battery voltage rises above 12.2 volts.

NOTE:

The battery sentinel is a separate feature that monitors battery condition.

LOW COOLANT LEVEL ALARM

This is a shutdown alarm. The sensor will be continuously monitored. If an error condition is seen for five (5) consecutive seconds, the alarm will be displayed.

GOVERNOR SENSOR FAULT ALARM

The governor position is monitored by an analog feedback signal. If the throttle position is seen outside of the normal operating range, a shutdown alarm is displayed. If the throttle is commanded to move, and no movement is seen, a shutdown alarm is displayed.

WIRING ERROR ALARM

When power is first apllied to the contoller, the software will perform a check on the wiring of the transfer output, and ensure it does not have high voltage on the wire. If this is the case, it will signal a miswire alarm and will not run. The test can be skipped by use of the escape key.

UNDERVOLTAGE ALARM

If the generator voltage falls below 60% for >5 seconds, an alarm will be issued.

MISSING CAM PULSE ALARM

This is a shutdown alarm. The alarm will activate after five (5) seconds of continuously missing cam pulses.

8-5

CntrlNex001.RevA05/10

Control Panel

OVERVOLTAGE ALARM

If the generator voltage rises above 110% for >3 seconds, an alarm will be issued.

If the generator voltage rises above 130% for >0.2 seconds, an alarm will be issued.

ALARM CANCEL

When the generator is shut down due to a latching alarm, the Auto /Off/ Manual switch must be set to the off position and the ENTER key pressed to unlatch any active fault and clear the corresponding fault alarm message.

INTERNAL FAILURE SHUTDOWN ALARM

Any internal failure that can be detected such as corrupted firmware will cause this shutdown alarm. This alarm cannot be cleared.

CANBUS ALARM

Where applicable, if the Canbus communications link fails to communicate, a “Canbus alarm” will be generated. This only applies to systems with external ignition modules. The alarm may be generated if:

1.The physical link is broken.

2.The ignition module fails or resets.

3.The Nexus module fails or resets.

IGNITION ALARM

When an ignition alarm occurs, a generic message “Ignition Fault” will be displayed as the fault code.

MAINTENANCE WARNING

When a maintenance period expires, a warning message will be posted. The warning can be reset by hitting the Enter key. Resetting will clear the warning and reset the maintenance counters for the condition annunciated. The history log will reflect the maintenance warning.

MAINTENANCE ALERT CHART

COMMON ALARM RELAY

The common alarm relay will be activated if there is a shutdown alarm. It will not activate on warnings or indicate that the Auto/Off/ Manual switch is in the OFF position. The OFF position will clear the alarms and the relay. The relay will not be used to indicate a generator is not activated.

MAINTENANCE ALERTS

Maintenance alerts will be provided for these conditions (see the Maintenance Alert Chart).

SERVICE SCHEDULE ‘A’

Inspect Accessory drive alert	1yr /100hrs
Coolant change & flush	1yr /100hrs
Inspect spark plugs alert	1yr /100hrs
Change oil & filter alert	1yr /100hrs
Inspect battery alert	1yr /100hrs
Change / Inspect air filter alert	1yr /100hrs

SERVICE SCHEDULE ‘B’

Change / Inspect spark plugs alert

2yr/ 250hr

CONDITION	1.6 CHERY	2.4/1800 MITSU	2.4/3600 MITSU	4.2 FORD
Change oil & filter alert	3mo/30hrs break-in	3mo/30hrs break-in	3mo/30hrs break-in	3mo/30hrs break-in
	1yr/100hrs	1yr/100hrs	1yr/100hrs	1yr/100hrs
Inspect/clean air inlet &	3mo/30hrs break-in	3mo/30hrs break-in	3mo/30hrs break-in	3mo/30hrs break-in
exhaust alert	6mo/50hrs	6mo/50hrs	6mo/50hrs	6mo/50hrs
Change / Inspect air filter	1yr/100hr	1yr/100hr	1yr/100hr	1yr/100hr
alert
Inspect spark plugs alert	1yr /100hrs	1yr /100hrs 1yr /100hrs	1yr /100hrs	1yr /100hrs
Change / Inspect spark	2yr/ 250hr	2yr/ 250hr	2yr/ 250hr	2yr/ 250hr
plugs alert
Inspect Accessory drive	3mo/30hrs break-in	3mo/30hrs break-in	3mo/30hrs break-in	3mo/30hrs break-in
alert	1yr /100hrs	1yr /100hrs	1yr /100hrs	1yr /100hrs
Coolant change & flush	1yr /100hrs	1yr /100hrs	1yr /100hrs	1yr /100hrs
Inspect battery alert	1yr /100hrs	1yr /100hrs	1yr /100hrs	1yr /100hrs

CntrlNex001.RevA05/10

8-6

MENU SYSTEM

MAIN MENU

ACTIVATION

ESC

HISTORY

STATUS

EDIT

DEBUG

ESC

ESC

ESC

ESC

ALARM LOG

RUN LOG

STATE

DISPLAY

COMMAND

VERSIONS

CONTRAST

INPUTS

OUTPUTS

DISPLAYS

QT TEST

-8

ESC

LANGUAGE

7

ENGINE

TIME/DATE

Press the “ESCAPE” key

HOURS

ESC

to jump back up through

the menu levels.

ENGINE

EXERCISE

+ / -

Use the “+/-” key

RPM

TIME/SPEED

to navigate through

the menu.

ENTER

Use the “ENTER” key

GENERATOR

RESET

FREQUENCY

MAINTENANCE

to select items or

enter data.

BATTERY

FUEL

VOLTAGE

SELECTION

HOURS UNDER

LINE INTERRUPT

LOAD

05/10

DELAY

Rev. A

CntrlNex001

Panel Control

Operation

STATIONARY EMERGENCY

GENERATOR CONTROL AND

OPERATION

Refer to the appropriate control panel operator’s manual for this unit.

OPERATING UNIT WITH MANUAL

TRANSFER SWITCH

If the Stationary Emergency Generator was installed in conjunction with a transfer switch capable of manual operation only, the following procedure applies. A manually operated transfer switch is one that will not provide automatic start-up and does not include an intelligence circuit.

ENGINE START-UP AND TRANSFER

For additional information, refer to the applicable control panel manual for this unit, as well as any literature pertaining to the specific transfer switch.

nThe Maintenance Disconnect Switch and the

AUTO/OFF/MANUAL switches (if so equipped) must be set properly, or the generator will crank and start as soon as the utility power to the transfer switch is turned off. Refer to applicable control panel and transfer switch manuals for more information.

nDo not proceed until certain that utility source voltage is available to the transfer switch and the transfer switch main contacts are set to UTILITY.

Do not attempt manual operation until all power supplies to the transfer switch have been positively turned off, or extremely dangerous - possibly lethal - electrical shock will result.

Transfer switch enclosure doors should be kept closed and locked. Only authorized personnel should be allowed access to the transfer switch interior. Extremely high and dangerous voltages are present in the transfer switch.

In order to transfer load from the utility source to the generator, follow these directions:

•Turn OFF or disconnect the utility power circuit to the transfer switch, using the means provided (such as the utility source main line circuit breaker).

•Set the transfer handle to its UTILITY (NORMAL) position with load circuits connected to the utility power supply.

•Set the generator’s main line circuit breaker to its OFF (or OPEN) position.

•Start the generator.

nDo not crank the engine continuously for longer than 30 seconds, or the heat may damage the starter motor.

•Let engine stabilize and warm up.

•Check all applicable instrument and gauge readings. When certain that all readings are correct, move the transfer switch manual handle to the STANDBY (or EMERGENCY STANDBY) position, i.e., load circuits supplied by the generator.

•Set the generator’s main line circuit breaker to its ON (or CLOSED) position.

•Load circuits are now powered by the generator.

RETRANSFER AND SHUTDOWN

For additional information, refer to the applicable control panel manual for this unit, as well as any literature pertaining to the specific transfer switch.

To transfer the load back to the utility power source and shut down the generator, follow these directions:

•Set the generator’s main line circuit breaker to its OFF (or OPEN) position.

•Manually move the transfer switch handle to its UTILITY (NORMAL) position, i.e., load circuits connected to the utility.

•Turn ON the utility power supply to the transfer switch, using the means provided (such as the utility power source main line circuit breaker).

•Let the generator run at no-load for a few minutes to stabilize internal temperatures.

•Shut down the generator.

OPERATING UNIT WITH AUTOMATIC

TRANSFER SWITCH

If the Stationary Emergency Generator has been installed with an automatic transfer switch, the engine may be started and stopped automatically or manually.

NOTE:

Refer to the applicable manual for your transfer switch and to “Transfer Switch Start Signal Connections”. In addition, please note the dangers under “Engine Start-up and Transfer.”

9-1

Oper001.RevD05/10

Maintenance

GENERAL MAINTENANCE

Before working on the Stationary Emergency

Generator, ensure the following:

•The AUTO/OFF/MANUAL switch is in the OFF position.

•The control panel fuse has been removed from the control box.

•The 120VAC supply to the battery charger is switched OFF.

•The negative battery cable has been removed.

CHECK ENGINE OIL

Check engine crankcase oil level (Figure 10.1) according to the Service Schedule.

•Remove oil dipstick and wipe dry with a clean, lint-free cloth.

•Install oil dipstick, then remove again.

•Oil should be between FULL and ADD marks.

•If oil level is below the dipstick ADD mark, remove oil fill cap-. Add the recommended oil to bring oil level up to the FULL mark. DO NOT FILL ABOVE THE “FULL” MARK. See “Engine Oil Recommendations” for recommended oils.

Figure 10.1 - Oil Dipstick and Oil Fill Cap

Oil Fill Cap

Oil

Dipstick

Oil Filter

CHANGING ENGINE OIL

nHot oil may cause burns. Allow engine to cool before draining oil. Avoid prolonged or repeated skin exposure with used oil. Thoroughly wash exposed areas with soap.

Refer to the Service Schedule for engine oil and filter change frequencies.

Drain the oil while the engine is still warm from running. This means warm up the engine, shut it down and drain immediately as follows:

1.Remove the drain hose from its retaining clip or cut the zip-tie securing the oil drain hose.

2.Loosen and remove OIL DRAIN HOSE CAP. Drain oil completely into suitable container.

3.When all oil has drained, install and tighten OIL DRAIN HOSE CAP and secure drain hose with a new zip-tie, or place the hose in its retaining clip.

4.Turn OIL FILTER (Figure 10.1) counterclockwise and remove. Properly dispose of old filter.

5.Apply light coating of new engine oil to seal of new oil filter.-Install FILTER and tighten by hand only. DO NOT OVER TIGHTEN.

6.Remove OIL FILL CAP and add recommended oil. Crankcase oil capacity is listed in the "Specifications" section.

nAfter refilling the crankcase with oil, always check oil level on dipstick. NEVER OPERATE ENGINE WITH OIL BELOW THE DIPSTICK “ADD” MARK.

7.Start engine and check for oil leaks.

8.Shut OFF engine and wait 10 minutes for the oil to settle down into the oil pan. Recheck oil level on dipstick. DO NOT fill above the dipstick "FULL" mark.

9.Dispose of used oil at a proper collection center.

COOLING INTAKE/OUTLET

Air intake and outlet openings in the generator compartment must be open and unobstructed for continued proper operation. This includes such obstructions as high grass, weeds, brush, leaves and snow.

Without sufficient cooling and ventilating air flow, the engine/generator quickly overheats, which causes it to shut down. (See the installation diagram.)

The exhaust system parts from this product get extremely hot and remains hot after shutdown. High grass, weeds, brush, leaves, etc. must remain clear of the exhaust. Such materials may ignite and burn from the heat of the exhaust system.

INSPECT COOLING SYSTEM

•Inspect engine cooling system. See the Service Schedule.

•Check hoses for damage, deterioration, leaks, etc. Correct any discrepancies found.

•Check hose clamps for tightness.

10-1	Maint024.RevA04/10