Troubleshooting (Generator)

Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a breakdown, use Table 19 shown below for diagnosis of the Generator. If the problem cannot be remedied, consult our company’s business office or service plant.

Table 19. Generator Troubleshooting

Symptom

Possible Problem

Solution

 

AC Voltmeter defective?

Check output voltage using a voltmeter.

 

Is wiring connection loose?

Check wiring and repair.

No Voltage Output

Is AVR defective?

Replace if necessary.

 

Defective Rotating Rectifier?

Check and replace.

 

Defective Exciter Field?

Check and replace.

 

Is engine speed correct?

Turn engine throttle lever to “High”.

Low Voltage Output

Is wiring connections loose?

Check wiring and repair.

 

Defective AVR?

Replace if necessary.

High Voltage Output

Is wiring connections loose?

Check wiring and repair.

Defective AVR?

Replace if necessary.

 

 

Short Circuit in load?

Check load and repair.

Circuit Breaker Tripped

Over current?

Confirm load requirements and reduce.

Defective circuit breaker?

Check and replace.

 

 

Over current Relay actuated?

Confirm load requirement and replace.

When the Emergency/Malfunction shutdown system has been activated, the engine will be stopped and the pre-heat lamp will indicate the malfunction by a series of flashing patterns. The flashing patterns and corrective action are shown below in Table 20. The flashing patterns consist of combinations of one or more long flashes and one or more short flashes.

Table 20. Engine/Generator Troubleshooting (Pre-heat Lamp)

 

Type of Fault

Possible Fault

Pre-Heat Lamp

Solution

 

 

Indication

 

 

 

 

 

 

 

Engine Overspeed

115% or more rated RPM speed?

Long 1 Short 1

Check electronic governor

 

 

Low Oil Pressure

Oil pressure 7 psi (49 kPa) or

Long 1 Short 2

Check oil level.

 

 

greater?

 

 

 

 

 

 

 

Insufficient Charge

No Voltage of Charging Genset?

Long 1 Short 3

Check wiring and repair.

 

 

High Water Temperature

Engine Overheat, 230° F (110° C)?

Long 1 Short 4

Check cooling system.

 

 

Engine Overheat, 248° F (120° C)?

Long 1 Short 6

Check cooling system.

 

 

Emergency Stop

Emergency Stop signal detected?

Long 1 Short 5

Check and repair fault

 

 

Starter Motor Protection

Starter motor run for 12 seconds

Long 1 Short 7

Check wiring and repair.

 

 

or more?

 

 

 

 

 

 

 

Rotation Sensor

Defective sensor, short circuit?

Long 2 Short 1

Check wiring and repair.

 

 

Solenoid

Defective solenoid, short circuit?

Long 2 Short 2

Check wiring and repair.

 

 

Water Temperature

Disconnection

Long 2 Short 4

Check connection.

 

 

Sensor

Short Circuit

Long 2 Short 5

Check sensor. Replace.

 

 

Charging Gen. Terminal

Disconnection

Long 2 Short 6

Check connections.

 

 

Over Voltage

VCC 18 volts or greater

Long 3 Short 1

Check overcurrent relay.

 

 

 

 

 

 

 

page 46 — DCA45ssk/ku3 60 hz Generator • operation and parts manual — rev. #0 (12/15/11)

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Multiquip DCA45SSKU3 manual Troubleshooting Generator, Generator Troubleshooting
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DCA45SSKU, DCA45SSKU3 specifications

The Multiquip DCA45SSKU3 and DCA45SSKU are advanced diesel generators designed for a variety of applications, making them an ideal choice for contractors, event planners, and anyone needing reliable power solutions. With a robust design and cutting-edge technologies, these generators stand out in their class for performance and durability.

One of the main features of the DCA45SSKU3 and DCA45SSKU is their impressive power output. Offering a prime power capacity of 45 kVA, these generators are equipped with a powerful Yanmar engine that provides reliable and efficient performance. The engine operates at low speed, which not only enhances fuel efficiency but also reduces noise levels, making these generators suitable for use in noise-sensitive environments.

The generators come equipped with a fully integrated control panel, featuring an intuitive digital display that allows users to monitor operating parameters such as voltage, frequency, and runtime. This user-friendly interface simplifies operation, ensuring that even those unfamiliar with generator technology can easily manage the generator's functions.

In terms of fuel capacity, the DCA45SSKU and DCA45SSKU3 are designed for extended run times. The large fuel tank allows for continuous operation, meaning users can depend on these generators for prolonged periods without frequent refueling, enhancing their suitability for long-duration projects and events.

Another remarkable characteristic is the trailer-mounted design, providing excellent portability. This feature enables users to easily transport the generator to different job sites or locations, making it perfect for construction sites, outdoor events, or emergency backup power situations. The rugged construction also ensures that the generator can withstand the wear and tear of being moved frequently.

Safety features are integral to the design of the DCA45SSKU3 and DCA45SSKU. The generators are equipped with automatic shutdown mechanisms in case of low oil pressure or overheating, protecting the unit from damage and ensuring safe operation. Additionally, the sound-attenuated enclosure minimizes noise pollution, a crucial consideration for operations in populated areas.

In summary, the Multiquip DCA45SSKU3 and DCA45SSKU generators are powerful, portable, and feature-rich solutions for anyone in need of reliable diesel power. With their advanced technology, fuel efficiency, and safety features, these generators are an excellent choice for a wide range of applications, ensuring that users can access the power they need, when they need it.
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