Pumping Flashcards
Auxiliary Engine Cooler Control:
Directs ____ to a heat exchanger where engine coolant is constantly circulating through.
pump water
Auxiliary Engine Cooler Control:
The introduction of the pump water will assist in lowering engine ____ during an engine overheat situation.
coolant temperature
Pump Recirculating Line Valve:
Used to keep the fire pump ____ when water is not flowing.
cool
Pump Recirculating Line Valve:
When opened, water from the discharge side of the pump is sent to the water tank through a ___ line.
1⁄2”
Water fire pump is ___ pump since it does not pump a definite amount of water with each revolution.
non-positive displacement
The Waterous pump mounted in the Pierce is a two-stage (twin impeller) pump. The two impellers are identical in ___, have the same __ each and share a single shaft.
size / capacity
Operate priming pump until main suction gauge shows a vacuum of approximately
___ and main pressure gauge shows a ___.
20” of Hg / positive pressure.
If you are not
able to achieve prime within ___, stop and investigate.
45 seconds
The pump discharge pressure is monitored and can vary but will be limited to an increase of ___.
30 PSI
The minimum pump discharge pressure must be greater than ___ for the PRO-S governor to take control of engine speed.
15 PSI
When the PRO-S SETTING display shows a value , press and hold the mode button for ___ seconds and the PRO-S changes modes.
3
No or Low Supply Water:
In Pressure Mode the PRO-S will increase the ___ and attempt to maintain the selected pressure setting.
engine RPM
No or Low Supply Water:
If the discharge pressure drops below ___ but stays above ___ the PRO-S will go into a prime cycle
45 PSI / 15 PSI
No or Low Supply Water:
It will set the engine to ____. If the pressure does not rise above 45 PSI in ____ the PRO-S will set the engine at idle RPM.
1100 RPM / 7 seconds
No or Low Supply Water:
If the discharge pressure drops below 15 PSI, the engine RPM will go to ___ and the SETTING display will show the selected setting.
idle
