When should the fuel oil suction strainer outside the oil storage tanks be cleaned?

• A. Every month
• B. When a differential in vacuum reading occurs across the strainer
• C. Only when there is visible dirt
• D. After every oil delivery

Answer: (B)

The cleaning of the fuel oil suction strainer outside the oil storage tanks is best determined by monitoring the differential in vacuum reading across the strainer. This measurement indicates the buildup of debris or contaminants within the strainer. When a significant differential is noted, it signals that the strainer is becoming clogged and could restrict the flow of fuel oil, potentially leading to operational issues in the system.

Cleaning it based solely on a fixed schedule (like monthly cleaning) or only when visible dirt is noticed may not adequately address the varying conditions that can affect the strainer's performance. Similarly, cleaning it after every oil delivery could be excessive and unnecessary, especially if the oil delivered is clean and does not contribute to any further contamination. Monitoring the vacuum reading allows for timely and efficient maintenance, ensuring the strainer operates effectively while preventing unexpected downtimes and maintaining optimal flow to the system.