Question Number 31
1. Close the flowing valves one at a time
2. The pump discharge pressure should rise no more than 30 psi when all valves are closed.
3. Set the fire pump so that it is discharging its rated capacity at a net pump discharge pressure of 150 psi
4. Reduce the pumping engine throttle until the net pump discharge pressure drops to 90 psi with no change to the discharge valve or nozzle setting(s)
5. Set the pressure control device to maintain the discharge pressure at 90 psi
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