What should be done after reaching the required recovery vacuum on an appliance?A. Immediately disconnect the recycling or recovery equipment, and open the system for service. B. Wait for at least a few minutes to see if the system pressure rises. C. Break the vacuum with nitrogen and open the system for service. D. Pressurize the system with nitrogen and perform a leak check.

B. Wait for at least a few minutes to see if the system pressure rises.

Explanation:

The thing to be done after reaching the required recovery vacuum on an appliance is to wait for at least a few minutes to see if the system pressure rises.

Waiting for at least a few minutes to see if the system pressure rises is necessary in order to show if there's still refrigerant that is either in liquid form or probably in the oil.

the warning light flashes for a second or two when the engine starts. if it stays on, there's must be something wrong with the coolant. you should never dare to continue driving when the light is on. pull over as soon as possible and shut the engine off.

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