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
When changing from pressure mode to RPM mode the RPM setting will be the RPM that the pump was operating at in ___ mode.
pressure
In order to pump pressures over ___, the Pressure Governor must be operated in the RPM Mode.
300 psi
