DCA-125USJ —TROUBLESHOOTING (ENGINE CONTROLLER)

Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a breakdown, use Table 19 (Engine Controller Troubleshooting) as a basic guideline for troubleshooting the Microprocessor Engine Controller unit (MPEC). If the problem cannot be remedied, consult our company's business office or service plant.

TABLE 19. ENGINE CONTROLLER TROUBLESHOOTING (MPEC)

SYMPTOM

POSSIBLE PROBLEM

SOLUTION

 

 

 

 

Low oil level?

Fill oil level.

 

 

 

Low oil pressure light is

Oil pressure sending unit failure?

Replace oil pressure sending unit.

 

 

on.

Time delay malfuntion in Controller?

Refer to dealer.

 

 

 

 

 

Wire shorted?

Inspect/repair wire.

 

 

 

 

Low coolant level?

Fill coolant level.

Low coolant level light is

 

 

Sending unit failure?

Replace sending unit.

on. (Optionally Installed)

 

 

 

Low battery voltage?

Replace/charge battery.

 

 

 

 

Fan belt tension incorrect?

Tighten/replace fan belt.

 

 

 

 

Air flow is not circulation through radiator?

Clean/repair radiator grill.

 

 

 

 

Doors open?

Close doors.

 

 

 

High coolant temperture

Exhaust leaking?

Replace/repair gaskets or faulty part.

light is on.

Generator being overloaded?

Check/reduce load.

 

 

 

 

 

Thermostat failure?

Replace thermostat.

 

 

 

 

Air intake blocked?

Clear all air intakes.

 

 

 

 

Temperature switch failure?

Replace temperature switch.

 

 

 

Overcrank light is on.

No or low Fuel?

Fill fuel level.

 

 

Controller needs to be calibrated?

Refer to dealer.

 

 

 

 

 

RPM engine speed too high?

Adjust RPM.

 

 

 

Overspeed light is on.

Governor actuator needs to be adjusted?

Adjust governor actuator.

 

 

Governor controller needs to be adjusted?

Adjust governor controller.

 

 

 

 

 

Engine Controller needs to be calibrated?

Refer to dealer.

 

 

 

Loss of MPU light(s) or

Magnetic pick up out of adjustment?

Adjust magnetic pick up.

 

 

on.

Magnetic pick up dirty?

Clean magnetic pick up.

 

 

 

 

PAGE 50 — DCA-125USJ — OPERATION AND PARTS MANUAL — REV. #2 (01/27/11)

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Multiquip DCA125USJ operation manual DCA-125USJ -TROUBLESHOOTING Engine Controller, Engine Controller Troubleshooting Mpec
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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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