Final answer:
The fueling operation indicator light on the Beta-Freightliner R-12 Hydrant-Servicing Unit flashes when the deadman timeout is within 30 seconds of pausing the fueling operation.
Step-by-step explanation:
The fueling operation indicator light on the Beta-Freightliner R-12 Hydrant-Servicing Unit flashes when the deadman timeout is within 30 seconds of pausing the fueling operation.