(TROUBLE 3) No microwave oscillation even though fan motor rotates.

CONDITION

 

 

 

CHECK

 

 

 

RESULT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No

 

 

 

 

 

 

 

 

 

 

 

Check continuity of high

 

 

 

Continuity

microwave

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

oscillation

 

 

 

voltage capacitor terminals

 

 

 

 

 

 

 

 

with wires removed

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check continuity of high voltage

 

 

 

Continuity in

 

 

 

 

 

 

 

 

 

 

 

rectifier in forward and backward

 

 

 

backward

 

 

 

 

 

 

 

 

 

 

 

direction with DC megger

 

 

 

direction

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Connect megger leads to

 

 

 

Continuity

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

magnetron terminal and

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

magnetron body

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check resistance of primary and

 

 

 

0 or

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

secondary coil of high voltage

 

 

 

 

 

 

 

 

transformer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check continuity of magnetron

 

 

 

No

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Continuity

 

 

 

 

with wires removed

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check continuity of filament

 

 

 

No

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Continuity

 

 

 

 

terminal of high voltage

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

transformer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check D.C. voltage being

 

 

 

0 V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

supplied to RELAY (RY1) coil

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Approx

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15 VDC

 

 

 

 

 

 

 

 

 

CAUSE

Defective high

voltage

transformer

Defective high voltage rectifier

Defective

magnetron

Defective high

voltage

transformer

Defective

magnetron

Defective high

voltage

transformer

Defective touch

control circuit

Faulty

contacts or

RELAY (RY1)

or open

relay coil

REMEDY

Replace

Replace

Replace

Replace

Replace

Replace

Replace

Replace

22

Page 24
Image 24
GE TMW-1100EC, TMW-800TC, TMW-1100MC manual Condition Check Result, Relay RY1

TMW-1100MC, TMW-1100E, TMW-1100M, TMW-800TC, TMW-1100EC specifications

The GE TMW series of gas turbines, particularly the TMW-800T, TMW-1100EC, TMW-800TC, TMW-1100M, and TMW-1100E, represent some of the most advanced technology in power generation, designed for efficiency and reliability.

The TMW-800T is renowned for its compact design and high efficiency, making it ideal for both utility and industrial applications. This turbine boasts a modular design that facilitates ease of maintenance and installation, while its advanced aerodynamics contribute to enhanced performance and reduced emissions. Additionally, its ability to operate on multiple fuel types allows for greater operational flexibility.

Similarly, the TMW-1100EC model offers enhanced power output and efficiency. It incorporates advanced combustion technology that minimizes nitrogen oxide emissions, complying with increasingly stringent environmental regulations. The electronic control system in this model allows for superior performance management and load-following capabilities, ensuring optimal performance under varying demand.

The TMW-800TC variant focuses on achieving high thermal efficiency while maintaining significant output levels. Its cooling technologies, including advanced blade cooling techniques and heat recovery systems, enable this turbine to sustain higher operating temperatures, improving its overall efficiency. This design is particularly beneficial in combined cycle power plants, where waste heat can be repurposed to generate additional electricity.

The TMW-1100M is particularly noteworthy for its versatility and adaptability in a wide range of applications, from cogeneration to standalone power generation. Its design includes robust materials and components engineered to withstand rigorous operating conditions, ensuring longevity and reliability, which is essential for industrial users who depend on consistent power availability.

Lastly, the TMW-1100E emphasizes operational efficiency through its advanced control systems and intelligent monitoring. This turbine is equipped with sensors and software that provide real-time data analytics, allowing for proactive maintenance and operational optimization. This technology not only enhances performance but also contributes to lower operational costs.

In summary, the GE TMW gas turbine series, with their various models, exemplify cutting-edge technology and engineering. Their main features include high efficiency, reduced emissions, operational flexibility, and advanced control systems, making them a preferred choice for power generation in both industrial and utility markets. Their adaptability to different fuels and operational environments further solidifies their stance as leading solutions in the gas turbine landscape.