Answer
The operator keeps an eye on the pump panel, which shows the flow of water at any given time from a given hose, and if any of them is about to get over, then it instructs the pumper to pump water from the main reservoir to the hose to avoid deficiency.
Work Step by Step
The operator keeps an eye on the pump panel, which shows the flow of water at any given time from a given hose, and if any of them is about to get over, then it instructs the pumper to pump water from the main reservoir to the hose to avoid deficiency.