Questions and Answers
Which type of pump can operate in pressure or volume mode?
What is the capacity rating of the PFD engine fleet pumps?
How does a centrifugal fire pump rotate water?
When should the volume mode be used in a two-stage pump?
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What is the purpose of the impeller in a centrifugal fire pump?
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Which component of the pump is responsible for adding additional pressure in a two-stage pump?
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Which gauge on the pump panel displays the total pressure the pump is producing?
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What is the normal operating temperature for a diesel engine?
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What does the throttle control?
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What does the flow meter indicate?
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What is the purpose of the discharge relief valve?
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What is the purpose of the transfer valve?
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Which type of intake connections are used when using a 3” supply line?
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What should be done regularly with the strainers?
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Where are the discharge drains and bleeders located?
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What is the purpose of the master pump drain?
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What should be done before opening the master pump drain?
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What does the UL Plate list?
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What should be done before engaging the pump?
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What should be done before charging the hose line?
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Study Notes
Fire Pumps
- A PFD (Presidential Fire Department) engine fleet pump can operate in either pressure or volume mode.
Capacity and Performance
- The capacity rating of PFD engine fleet pumps is not specified.
- Centrifugal fire pumps rotate water by using a spinning impeller to increase the velocity of the water, then converting the velocity into pressure.
Operating Modes
- The volume mode should be used in a two-stage pump when maximum water flow is required.
Pump Components and Functions
- The impeller in a centrifugal fire pump is responsible for adding velocity to the water, which is then converted into pressure.
- The second stage of a two-stage pump is responsible for adding additional pressure.
Pump Panel and Instrumentation
- The discharge pressure gauge on the pump panel displays the total pressure the pump is producing.
Engine Performance
- The normal operating temperature for a diesel engine is not specified.
Throttle and Flow Control
- The throttle control regulates the engine speed.
- The flow meter indicates the flow rate of water being pumped.
Safety Valves and Relief Systems
- The discharge relief valve relieves excess pressure in the pump discharge line.
- The transfer valve directs pressurized water to the discharge lines.
Intake and Supply Connections
- When using a 3” supply line, threaded intake connections are used.
Maintenance and Drainage
- Strainers should be cleaned regularly to ensure proper pump operation.
- Discharge drains and bleeders are located at the discharge side of the pump.
- The master pump drain is used to drain the pump and discharge lines.
- The master pump drain should be opened slowly and cautiously to prevent water hammers.
- The UL Plate lists the pump's specifications and ratings.
Pre-Operational Checks
- The pump should be checked and primed before engaging the pump.
- The hose line should be charged slowly and cautiously before use.
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Description
Test your knowledge of Philadelphia Fire Department's engine company operations and pump panel skills with this quiz. Learn the essentials of pumping an apparatus and enhance your understanding of fire pump operations.
