In the M978 300-GPM FS, Model A uses how many canisters, and Model B uses how many coalescers and canisters?

In the M978 300-GPM FS, Model A uses how many canisters, and Model B uses how many coalescers and canisters?

• A. Model A: 15 canisters; Model B: 6 coalescers, 2 canisters
• B. Model A: 15 canisters; Model B: 4 coalescers, 3 canisters
• C. Model A: 10 canisters; Model B: 6 coalescers, 2 canisters
• D. Model A: 12 canisters; Model B: 5 coalescers, 2 canisters

Answer: (A)

In the M978 300-GPM Fuel Service, filtration is arranged to manage both particulates and water. Canisters hold the particulate filtration media, while coalescers separate water from the fuel so it can be drained away before it reaches the final filters. Model A uses a large bank of particulate filters, totaling 15 canisters. This setup provides ample surface area and redundancy for high-volume filtration at 300 GPM, focusing on particulate removal through many filter elements. Model B uses a water-removal-first approach, with six coalescers to capture and coalesce water droplets, followed by two canisters to perform the particulate filtration after water separation. This configuration emphasizes protecting downstream filters by removing water upfront, with fewer overall canisters. Therefore, Model A has 15 canisters, and Model B has 6 coalescers plus 2 canisters.

In the M978 300-GPM Fuel Service, filtration is arranged to manage both particulates and water. Canisters hold the particulate filtration media, while coalescers separate water from the fuel so it can be drained away before it reaches the final filters.

Model A uses a large bank of particulate filters, totaling 15 canisters. This setup provides ample surface area and redundancy for high-volume filtration at 300 GPM, focusing on particulate removal through many filter elements.

Model B uses a water-removal-first approach, with six coalescers to capture and coalesce water droplets, followed by two canisters to perform the particulate filtration after water separation. This configuration emphasizes protecting downstream filters by removing water upfront, with fewer overall canisters.

Therefore, Model A has 15 canisters, and Model B has 6 coalescers plus 2 canisters.