Application

Cooler ESP of a cement plant located in Cambodia.

Problem

• Unstable operation of controller
• Worn out mechanical parts & misalignment problem
• Worn out original top rapping system, including loose connection, and broken shaft

Solution

The overhaul maintenance & modification works were carried out within 12 days working 2 shifts / 24 hours:

• Design & modification of DE rapping system from top rapping to side rapping
• Supply of new DE frame & installation supervision
• GVC controller installation
• Supply of minor parts such as CP hammer, insulator, etc.
• Installation of walkway

Limitations & difficulties encountered during maintenance:

• Modification work: Due to the alignment of H beam and rapping shaft, the rapping insulator box with dust removal screw could not be installed directly.

Solution: Minor modification of H beams and DE rapping shaft location was carried out.

• Electrical: 1 keypad to control 3 mainboards.

Solution: Use networking connection and apply on/off push button to control the ESP in case the keypad faces malfunctioning problem.

Benefits

No load test was carried out after installation. ESP was operating efficiently with stable performance.

• Tumbling Hammer
• Graphic Voltage Controller