On the A/U26U-1 oxygen servicing unit, how many cylinders of nitrogen are used to drive the boost pump?

The correct answer indicates that two cylinders of nitrogen are used to drive the boost pump on the A/U26U-1 oxygen servicing unit. In this system, nitrogen serves a critical role in operating the boost pump effectively, as it provides the necessary pressure to ensure that the pump can function properly and deliver the required flow of oxygen.

Using two cylinders allows the system to maintain adequate pressure and support continuous operation without the risk of exhausting the nitrogen supply too quickly, which is essential for consistent service. This design ensures that the unit can reliably perform its functions, especially in critical situations where oxygen servicing is required for aircraft.

Providing two cylinders also contributes to operational efficiency and backup, as having a secondary cylinder allows for uninterrupted service in the event that one cylinder needs to be replaced or serviced. This redundancy is a significant consideration in aviation maintenance and safety.