Multiquip DCA125USI manual Battery Cable Installation, Alternator, Wiring

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INSPECTION/SETUP

BATTERY

This unit is of negative ground DO NOT connect in reverse. Always maintain battery fl uid level between the specifi ed marks. Battery life will be shortened, if the fl uid level are not properly maintained. Add only distilled water when replenishment is necessary.

DO NOT over fill. Check to see whether the battery cables are loose. Poor contact may result in poor starting or malfunctions. Always keep the terminals firmly tightened. Coating the terminals with an approved battery terminal treatment compound. Replace battery with only recommended type battery.

The battery is suffi ciently charged if the specifi c gravity of the battery fl uid is 1.28 (at 68° F). If the specifi c gravity should fall to 1.245 or lower, it indicates that the battery is dead and needs to be recharged or replaced.

Before charging the battery with an external electric source, be sure to disconnect the battery cables.

Battery Cable Installation

ALWAYS be sure the battery cables (Figure 35) are properly connected to the battery terminals as shown below. The red cable is connected to the positive terminal of the battery, and the black cable is connected to the negative terminal of the battery.

CAUTION

ALWAYS disconnect the negative terminal FIRST and reconnect negative terminal LAST.

Figure 35. Battery Connections

When connecting battery do the following:

1.NEVER connect the battery cables to the battery terminals when the MPEC Control Switch is in either the MANUAL position. ALWAYS make sure that the MPEC Control Switch is in the OFF/RESET position when connecting the battery.

2.Place a small amount of battery terminal treatment compound around both battery terminals. This will ensure a good connection and will help prevent corrosion around the battery terminals.

NOTICE

If the battery cable is connected incorrectly, electrical damage to the generator will occur. Pay close attention to the polarity of the battery when connecting the battery.

CAUTION

Inadequate battery connections may cause poor starting of the generator, and create other malfunctions.

ALTERNATOR

The polarity of the alternator is negative grounding type. When an inverted circuit connection takes place, the circuit will be in short circuit instantaneously resulting the alternator failure.

DO NOT put water directly on the alternator. Entry of water into the alternator can cause corrosion and damage the alternator.

WIRING

Inspect the entire generator for bad or worn electrical wiring or connections. If any wiring or connections are exposed (insulation missing) replace wiring immediately.

PIPING AND HOSE CONNECTION

Inspect all piping, oil hose, and fuel hose connections for wear and tightness. Tighten all hose clamps and check hoses for leaks.

If any hose (fuel or oil) lines are defective replace them immediately.

DCA125USI 60 HZ GEN. • OPERATION AND PARTS MANUAL — REV. #1 (03/25/11) — PAGE 33

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Contents This Manual Must Accompany the Equipment AT ALL Times Model DCA125USIProposition 65 Warning Reporting Safety Defects AdministratorNhtsa DCA125USI 60 Hz Generator Table of ContentsOrdering parts has never been easier Parts Ordering ProceduresSafety Messages Safety InformationGeneral Safety Generator Safety Always know the location of the nearest Before servicing equipment Engine SafetyTowing Safety Fuel Safety Never use fuel as a cleaning agent From fuel vapors or if fuel is spilled on a hot engineElectrical Safety Device. All installations should be Never use gas piping as an electrical ground Environmental Safety Battery SafetyDCA125USI SpecificationsDimensions DimensionsTypical Generator Grounding Application InstallationIndoor Installation Outdoor InstallationMounting Generator GroundingGeneral Information Major Components Owing from the U,V, and W Output Terminal Lugs to the load Generator Control PanelPage Engine Operating Panel Engine Operating PanelModule Fuel Gauge Indicates amount of diesel fuel availableOutput Terminal Panel Familiarization Output Terminal FamiliarizationTerminal legs O and Ground are considered bonded grounds Removing the Plastic Face Plate Hard Wire Hookup Panel VAC Gfci ReceptaclesTwist Lock Dual Voltage 120/240 VAC Receptacles Over Current Relay Connecting LoadsSingle Phase Load Three Phase LoadLoad Application Generator Output Voltages Generator OutputsHOW to Read the AC Ammeter and AC Voltage Gauges Generator OUTPUTS/GAUGE ReadingAC Voltmeter Gauge Reading Uvwo Terminal Output Voltages Output Terminal Panel Connections3Ø-240/139 Uvwo Terminal Output Voltages 3Ø-208V/1Ø-120V Uvwo Terminal Output Voltages1Ø-240/120V Uvwo Terminal Output Voltages 3Ø-480/277V Uvwo Terminal Output VoltagesCircuit Breakers INSPECTION/SETUPLubrication OIL Fuel CheckOnly use #2 diesel fuel when refueling Refueling ProcedureAIR Cleaner FAN Belt Tension Cleaning the RadiatorCoolant ANTIFREEZE/SUMMER COOLANT/ Water Operation in Freezing WeatherBattery Cable Installation BatteryWiring AlternatorBefore Starting Generator START-UP ProcedureStarting Starting ManualPre-Heat Lamp Normal Shutdown Procedure Generator SHUT-DOWN ProceduresEmergency Shutdown Procedure To shutdown the generator, use the following procedureMaintenance General Inspection AIR CleanerAir Cleaner with Dust Indicator Fuel Addition Fuel Tank InspectionAIR Removal Check OIL Level Radiator CleaningReplacing Oil Filter Flushing OUT Radiator and Replacing CoolantBattery Charger & Jacket Water Heater Power Connections Trailer Maintenance Trailer MaintenanceCoupler Type of hitch used on the trailer for towing Brakes Brake AdjustmentHydraulic Surge Brakes Through 8 and as listed belowTIRES/WHEELS/LUG Nuts Tire Wear/Infl ationSuspension Lug Nut Torque Requirements Start all wheel lug nuts by handNever use an pneumatic air gun to tighten wheel lug nuts Trailer/Towing Vehicle Wiring Diagram Trailer Wiring DiagramGenerator Wiring Diagram Generator Wiring DiagramEngine Wiring Diagram Engine Wiring DiagramController Wiring Diagram Controller Wiring DiagramTroubleshooting Generator Method of Operation Troubleshooting Diagnostic LampPage Sample Parts List Explanation of Code in Remarks ColumnXxxxx only Not Used on To 3 units Suggested Spare PartsGenerator Assy Includes Items W/# Part Name QTY. RemarksField Assy FANControl BOX Assy Diagonastic Switch Push Button SwitchSelector Switch Switch BracketControl BOX Assy Alarm Lamp Switch CoverWater Temperature Gauge SWITCH, Panel LightEngine and Radiator Assy INDICATOR, AIR Cleaner AIR CleanerBracket AIR Cleaner BAND, AIR CleanerEngine and Radiator Assy AIR Duct Hose ConnectorBlow by Hose Hose JointEngine and Radiator Assy Cooler Hose BRACKET, Inter CoolerFAN Shroud BRACKET, FAN ShroudOutput Terminal Assy Output Terminal Bolt Terminal BoardTerminal Cover Output WindowBattery Assy Battery Sheet BatteryBattery Band Battery Bolt SETMuffler Assy Muffler GasketBolt SET Fuel Tank Assy Fuel Tank CAP Fuel TankFuel Sender Unit Connect HoseEnclosure ASSY. Part Enclosure ASSY. PART1 Enclosure ASSY. Part Duct Back PlateOver COVER, Front Frame COVER, Radiator CAPEnclosure ASSY. Part Rear Frame Enclosure ASSY. Part Seal Rubber WasherManual PAK Rubber Seals Assy Part Name Nameplate and Decals Assy Control BOX Group Battery GroupEngine & Radiator Group Output Terminal GroupNameplate and Decals Assy Enclosure Group Fuel Tank GroupFreight Policy Terms and Conditions of Sale PartsPage HERE’S HOW to GET Help
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DCA125USI specifications

The Multiquip DCA125USI is a high-performance portable diesel generator renowned for its reliability, efficiency, and robust construction, making it an ideal choice for construction sites, events, and remote locations requiring continuous power. Engineered for durability, this generator features a solid and compact design that allows seamless transport while providing ample power to meet demanding applications.

One of the standout features of the DCA125USI is its powerful 125 kVA output, capable of supplying electricity to a wide range of equipment simultaneously. With a fuel-efficient Tier 4 compliant engine, this generator not only delivers high performance but also addresses environmental concerns through reduced emissions. Operating at low noise levels, the DCA125USI ensures a quieter work environment, making it suitable for urban areas and noise-sensitive locations.

In terms of technology, the DCA125USI is equipped with a state-of-the-art digital control panel that offers advanced monitoring capabilities, allowing users to easily track the generator's performance, fuel consumption, and overall health. This user-friendly interface simplifies operation and enhances the overall experience for users, whether they are seasoned professionals or first-time operators. Additionally, the generator is fitted with automatic voltage regulation (AVR), which provides stable power output, protecting connected equipment from voltage fluctuations.

Safety is a priority with the Multiquip DCA125USI, as evidenced by its comprehensive set of protection features, including low oil pressure shutdown, high-temperature shutdown, and overload protection. These safety mechanisms ensure the longevity of the engine and the generator's components while safeguarding connected equipment against potential damage.

Another notable characteristic is its large fuel tank, which allows for extended run times, reducing the need for frequent refueling. This feature is particularly beneficial in situations where access to fuel is limited or where continuous operation is critical.

In conclusion, the Multiquip DCA125USI is a versatile and dependable portable diesel generator, catering to a wide variety of applications. Its combination of high output, advanced technology, and robust safety features make it an excellent investment for contractors, event organizers, and anyone in need of reliable power in challenging environments. With this generator, users can have peace of mind knowing they have a powerful energy solution at their disposal.
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