PURIFIER ( PART A ) MEO CLASS 4 QUESTIONS ANSWERS

 Why we are using purifier in onboard?

• To avoid the sulphur corrosion
• To remove the water and sludge from the fuel oil 

What are the causes of sulphur corrosion ?

• Liner worn out 
• Fuel injector worn out 
• Piston ring worn out 

Difference between purifier and clarifier?

Purifier 

•  Remove the water and solid from the oil
• Two outlet on top, (one for dirty water one for oil)
• Gravity disc is provided.
• Blond disc is fitted on top of the stack
• Sealing water is required for starting 
• Lower disc have holes.

Clarifier

• Remove the solid from the liquid 
• Only outlet for clean oil 
• No gravity disc 
• Blind disc on the bottom
• Lower disc has no holes 

How do you change the purifier to clarifier?

• Remove the gravity disc
• Set the ind disc at bottom
• Shut the sealing water
• Water outlet also closed.

Purpose of Gravity disc / dam ring ?

• It will set the interface line between the water and oil.

Reason for multi disc provided in purifier?

• To separate the liquid into thin layers and it will create the shallow settling distance between disc 
• To improve the separation of oil from heavier liquid 
• To increase the surface area.

Why sealing water is necessary for purifier?

• To seal the water outlet
• To prevent the overflow of oil from water outlet
• To avoid leakage or mixing of fluid.