Multiquip DCA125USJ operation manual Before servicing equipment

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DCA-125USJ — SAFETY INFORMATION

ENGINE SAFETY

DANGER

„The engine fuel exhaust gases contain poisonous carbon monoxide. This gas is colorless and odorless, and can cause death if inhaled.

„The engine of this equipment requires an adequate free flow of cooling air. NEVER

operate this equipment in any enclosed or narrow area where free flow of the air is restricted. If the air flow is

restricted it will cause injury to people and property and serious damage to the equipment or engine.

WARNING

„DO NOT place hands or fingers inside engine compartment when engine is running.

„NEVER operate the engine with heat shields or guards removed.

„ Keep fingers, hands hair and clothing away from all moving parts to prevent injury.

„ DO NOT remove the radiator cap while the engine is hot. High pressure boiling water will gush out of the radiator and severely scald any persons in the general area of the generator.

„DO NOT remove the coolant drain plug while the engine is hot. Hot coolant will gush out of the coolant tank and severely scald any persons in the general area of the generator.

„DO NOT remove the engine oil drain plug while the engine is hot. Hot oil will gush out of the oil tank and severely scald any persons in the general area of the generator.

CAUTION

„NEVER touch the hot exhaust manifold, muffler or cylinder. Allow these parts to cool

before servicing equipment.

NOTICE

„NEVER run engine without an air filter or with a dirty air filter. Severe engine damage may occur. Service air filter frequently to prevent engine malfunction.

„NEVER tamper with the factory settings of the engine or engine governor. Damage to the engine or equipment can result

if operating in speed ranges above the maximum allowable.

„Wet stacking is a common problem with diesel engines which are operated for extended periods with light or no load applied. When a diesel engine operates without sufficient load (less than 40% of the rated output), it will not operate at its optimum temperature. This will allow unburned fuel to accumulate in the exhaust system, which can foul the fuel injectors, engine valves and exhaust system, including turbochargers, and reduce the operating performance.

In order for a diesel engine to operate at peak efficiency, it must be able to provide fuel and air in the proper ratio and at a high enough engine temperature for the engine to completely burn all of the fuel.

Wet stacking does not usually cause any permanent damage and can be alleviated if additional load is applied to relieve the condition. It can reduce the system performance and increase maintenance. Applying an increasing load over a period of time until the excess fuel is burned off and the system capacity is reached usually can repair the condition. This can take several hours to burn off the accumulated unburned fuel.

„State Health Safety Codes and Public Resources Codes specify that in certain locations, spark arresters must be used on internal combustion engines that use hydrocarbon fuels. A spark arrester is a device designed to prevent accidental discharge of sparks or flames from the engine exhaust. Spark arresters are qualified and rated by the United States Forest Service for this purpose. In order to comply with local laws regarding spark arresters, consult the engine distributor or the local Health and Safety Administrator.

PAGE 10 — DCA-125USJ — OPERATION AND PARTS MANUAL — REV. #2 (01/27/11)

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Contents Model DCA125USJ 2 DCA-125USJ Operation and Parts Manual REV. #2 01/27/11 DCA-125USJ Operation and Parts Manual REV. #2 01/27/11 Table of Contents Parts Ordering Procedures Ordering parts has never been easierDCA-125USJ Specifications Generator SpecificationsDCA-125USJ Dimensions TOP, Side and Front DimensionsDCA-125USJ Safety Information Safety Messagesfire extinguisher DCA-125USJ Safety Information„ Always know the location of the nearest first aid kitBefore servicing equipment If operating in speed ranges above the maximum allowable3ECURE Portable Power Cables in Cable Tray with TIE wraps „ Never use fuel as a cleaning agentFrom fuel vapors or if fuel is spilled on a hot engine Device. All installations should be „ Never use gas piping as an electrical groundDCA-125USJ Safety Information DCA-125USJ Generator Decals DCA-125USJ Generator Decals DCA-125USJ Installation Typical Generator Grounding ApplicationIndoor Installation DCA-125USJ InstallationOutdoor Installation MountingGenerator Control Panel DCA-125USJ Series Familiarization GeneratorEngine Operating Panel Control BoxDCA-125USJ Major Components Generator Major Components20 DCA-125USJ Operation and Parts Manual REV. #2 01/27/11 DCA-125USJ Generator Control Panel DCA-125USJ Engine Operating Panel DCA-125USJ Engine Operating Panel DCA-125USJ Output Terminal Panel Familiarization Output Terminal Familiarization120VAC Gfci Receptacles Twist Lock Dual Voltage 120/240 VAC ReceptaclesConnecting Loads Blower FanDCA-125USJ Load Application Single Phase LoadThree Phase Load Motors and motor-drivenGenerator Amperage Voltage Selector SwitchGenerator OutputVoltages Gfci Receptacle Load CapabilityDCA-125USJ Gauge Reading How to Read the OutputTerminal GaugesReading Amperage 3Ø 240/139 Output Terminal Lug Voltages DCA-125USJ Output Terminal Panel ConnectionsUvwo Terminal Output Voltages 3Ø 208V/1Ø120V Output Terminal Lug Voltages3Ø 480/277 Output Terminal Lug Voltages 1Ø 240V/120V Output Terminal Lug VoltagesLubrication Oil DCA-125USJ PRE-SETUPCircuit Breakers Fuel CheckRefueling Procedure RefuelingOperation FreezingWeather Cleaning the RadiatorAir Cleaner Fan Belt Tension Must be less than 50%Wiring BatteryBattery Cable Installation AlternatorDirect exhaust away from nearby personnel Before StartingEngines exhaust contains harmful emissions Starting ManualFrequency Meter Hz Place the Mpec Control Switch in the Auto position Starting Auto ModeIs placed in the Auto position Normal Shutdown Procedure Emergency Shutdown ProcedureDCA-125USJ Maintenance Replacing Oil Filter Air RemovalCheck Oil Level Replacing Fuel FilterBattery charger To ensure adequate startingBrakes DCA-125USJ -TRAILER Brakes MaintenanceBrake Adjustment Hydraulic Surge BrakesSuspension Tires/Wheels/Lug NutsTire Wear/Inflation Lug Nut Torque Requirements DCA-125USJ -TRAILER MaintenanceStart all wheel lug nuts by hand DCA-125USJ -TRAILERWIRING Diagram DCA-125USJ Generatorwiring Diagram Generator Wiring DiagramDCA-125USJ Enginewiring Diagram DCA-125USJ -TROUBLESHOOTING Generator DCA-125USJ -TROUBLESHOOTING Engine Controller Engine Controller Troubleshooting MpecDCA-125USJ Operation and Parts Manual REV. #2 01/27/11 DCA-125USJ Explanation of Code in Remarks Column QTY. ColumnDCA-125USJ Suggested Spare Parts Qty DescriptionDCA-125USJ Generator Assy DCA-125USJ Generator Assy DCA-125USJ Control BOX Assy 0601808823 M32130007020330000180 LAF3630010393P58 DCA-125USJ Operation and Parts Manual REV. #2 01/27/11 DCA-125USJ Control BOX Assy DCA-125USJ Engine and Radiator Assy RE504836 M39232000540602041292 0602042594Engine & Radiator Assy 0602022561 06055151970602022563 0603306590DCA-125USJ Outputterminal Assy DCA-125USJ Outputterminal Assy DCA-125USJ Battery Assy M9310500404 06022201964D-2 M9103000504DCA-125USJ Muffler Assy M3333000903 M33301004020017112030 M3333200304DCA-125USJ Fueltank Assy 0605501074 M33630014020605505070 0605516090DCA-125USJ Enclosure #1 Assy Enclosure #1 Assy0016910030 M3413001812M3363300303 060330679774 DCA-125USJ Operation and Parts Manual REV. #2 01/27/11 0010114040 24A M349320061424A M3493201204 25A 0030014000DCA-125USJ Enclosure #2 Assy Enclosure #2 AssyM3493303203 M3443000802M3443000812 M3443000904DCA-125USJ Rubber Seals Assy 0229201240 02292008700229201130 0228900660DCA-125USJ Nameplate and Decals Assy M1550000703 M1550000204M15000020 M15000070Terms and Conditions of Sale Parts Freight PolicyDCA-125USJ Operation and Parts Manual REV. #2 01/27/11 HERE’S HOW to GET Help

DCA125USJ specifications

The Multiquip DCA125USJ is a robust, high-performance generator designed to meet the diverse needs of various industries, including construction, events, and emergency backup. This generator boasts a compact size and impressive output, making it a reliable choice for both temporary and permanent power solutions.

At the heart of the DCA125USJ is a powerful diesel engine, providing an impressive 125 kVA output. This engine is engineered for efficiency, ensuring that the generator can continuously deliver reliable power while maintaining low operational costs. The generator operates at low RPM, which not only extends the engine's lifespan but also reduces noise levels, making it ideal for urban environments and sensitive locations.

One of the standout features of the DCA125USJ is its advanced electronic control system. This technology allows for seamless monitoring and management of the generator's performance, ensuring optimal operation. The control panel is user-friendly, offering real-time data on voltage, frequency, and operating hours, which simplifies maintenance and troubleshooting.

The DCA125USJ is equipped with a sturdy, weather-resistant enclosure that protects it from the elements, making it suitable for outdoor applications. This enclosure also contributes to noise reduction, ensuring quieter operation compared to traditional generators. Additionally, its compact design allows for easy transport and installation, making it a versatile option for various job sites.

Safety is a top priority in the design of the DCA125USJ. It features multiple safety mechanisms, such as an automatic shut-off system that activates in the event of low oil pressure or overheating, protecting the generator and prolonging its operational life.

Moreover, the DCA125USJ is compliant with rigorous emissions standards, making it an environmentally responsible choice. It offers options for multiple voltage outputs, which adds to its adaptability for different applications, from powering heavy machinery to providing electricity for small tools.

In summary, the Multiquip DCA125USJ stands out for its powerful diesel engine, state-of-the-art electronic controls, robust construction, and focus on safety and efficiency. Whether used in construction, outdoor events, or as a backup power source, the DCA125USJ is engineered to deliver reliable performance in a user-friendly package. This makes it a top contender for anyone needing dependable generator capabilities.
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