What are the limits for Dry Motoring Cycles?

The correct answer is rooted in the specific procedural limits outlined for dry motoring cycles, which are crucial for engine maintenance and operational checks. In the case of dry motoring, limitations are established to prevent overheating and undue stress on the engine components.

For Cycle 1, the 90 seconds on duration followed by a 5 minutes off time is necessary to allow the starter and engine components to cool adequately after an initial motor cycle. This time allows for initial checks and rest periods vital for maintaining engine integrity during extended periods of operation.

For Cycles 2 to 5, the 30 seconds on period, followed by a longer 10 minutes off interval, is designed to reduce the risk of overheating while still allowing for essential checks in subsequent cycles. This approach balances operational needs with an acknowledgment of potential thermal limits, ensuring that the engine does not overheat and that it remains within operational guidelines.

This cycle logic is implemented to ensure both safety and proper engine functioning, emphasizing a structured approach to the dry motoring process.