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

CONDITION

No

microwave oscillation

CHECK

Check continuity of high

voltage capacitor terminals

with wires removed

Check continuity of high voltage rectifier in forward and backward

direction with DC megger

Connect megger leads to magnetron terminal and magnetron body

RESULT

Continuity

Continuity in backward direction

Continuity

CAUSE

Defective high

voltage

transformer

Defective high voltage rectifier

Defective

magnetron

REMEDY

Replace

Replace

Replace

 

 

 

 

0 ￿ or ￿

Check resistance of primary and

 

 

 

 

 

secondary coil of high voltage

 

 

 

transformer

 

 

 

 

 

 

 

 

 

 

 

 

 

No

Check continuity of magnetron

 

 

 

 

 

 

Continuity

with wires removed

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No

Check continuity of filament

 

 

 

 

 

 

Continuity

terminal of high voltage

 

 

 

 

 

 

 

transformer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0 V

Check D.C. voltage being

 

 

 

 

 

 

 

 

 

 

 

supplied to RELAY (RY1) coil

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Approx

 

 

 

 

 

 

 

 

 

 

15 VDC

 

 

 

 

 

 

Defective high

voltage

transformer

Defective

magnetron

Defective high

voltage

transformer

Defective touch

control circuit

Faulty

contacts or

RELAY (RY1)

or open

relay coil

Replace

Replace

Replace

Replace

Replace

21

Page 21
Image 21
Daewoo 181GOA0A manual With wires removed, Relay RY1

181GOA0A specifications

The Daewoo 181GOA0A is a compact and versatile mini excavator designed to provide optimum performance in a range of construction and landscaping applications. Known for its robust build quality and reliability, the 181GOA0A is an excellent choice for both professional contractors and DIY enthusiasts.

One of the standout features of the Daewoo 181GOA0A is its powerful engine. The excavator is equipped with a highly efficient diesel engine that offers a balanced blend of power and fuel efficiency. This engine enables operators to tackle challenging terrains and heavy workloads with ease, ensuring productivity remains high throughout the day.

The excavator boasts a compact size, making it particularly useful for projects in confined spaces, such as urban job sites or residential landscaping tasks. The reduced width and height allow the 181GOA0A to maneuver easily in tight areas where larger machines would struggle. This maneuverability does not compromise on performance, as the machine retains a high lifting capacity and digging depth that competes with larger excavators in its class.

In terms of technology, the Daewoo 181GOA0A features advanced hydraulic systems that ensure precise control and superior performance. The excavator is equipped with adjustable flow rates for different attachments, enhancing versatility and allowing operators to switch between tasks seamlessly. This hydraulic system also contributes to the machine's overall efficiency by maximizing power delivery to the hydraulic attachments.

Additionally, the 181GOA0A includes an ergonomic operator's cabin with intuitive controls, providing comfort and reducing operator fatigue. The cabin is designed with visibility in mind, enhancing safety during excavation tasks. Features like adjustable seating, climate control, and easy-to-reach controls make the operator’s experience more pleasant and productive.

The build quality of the 181GOA0A showcases Daewoo's commitment to durability. Engineered with high-grade materials, the excavator is built to withstand the rigors of tough job sites while requiring minimal maintenance.

In summary, the Daewoo 181GOA0A stands out as a premier choice for those needing a compact yet powerful mini excavator. The combination of its powerful engine, advanced hydraulic technology, maneuverability, and operator comfort makes it an invaluable tool for a multitude of construction and landscaping applications. Whether you are digging trenches, moving earth, or performing other excavation tasks, the 181GOA0A delivers exceptional performance and reliability.