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25 Cards in this Set
- Front
- Back
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What is the most common type of pump used in the fire service?
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Centrifical Pumps
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What are the 2 diiferent settings on the transfer valve?
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Volume/Parallel
Pressure/Series |
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For pumps that have packing, what is the normal drip rate during operation?
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8 - 10 drops per minute
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What is the maximum pump pressure you should have when changing the transfer valve?
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50 psi
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What does a solid amber light on the TPM indicate?
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The internal relief valve is operating.
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What does a flashing amber light on the TPM indicate?
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The external relief valve is operating.
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What is the main purpose of the relief valve?
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To protect personnel, and equipment from pressure surges.
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What pressure does TD generally set the TPM at to begin with?
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200 psi
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When should the Volume/Parallel position be used on a two stage pump?
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When the pump is used at more than 50% of its rated capacity.
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When is a priming pump used, and why is it needed?
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When drafting from a static water source. It is needed because it can displace air.
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Why is a two stage pump normally set to pressure?
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Becasue it reduces the load and RPM of the engine to produce the required pressure.
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What type of oil is used by primers that are not of the ESP (Environmentally Safe Primer) variety?
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Automatic transmission Fluid
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What are the two main gauges on the pump panel that are also found on the dashboard?
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Engine water temperature
Engine oil pressure |
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What is cavitation?
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A potentially damaging conditon caused by air in the pump.
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What is teh major concern for a pump that is engaged, but not flowing water?
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Overheating due to no circulation.
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What can be done to keep the pump cool while no water is flowing?
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Opening the auxilliary booster cooler, and/or operning up the tank fill valve.
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How do we avoid water hammer?
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By opening and closing gates and valves slowly.
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What are 3 things that influence discharge pressure?
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Volume
RPM Inlet pressure |
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What are 2 types of auxilliary coolers?
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Auxilliary engine cooler, and booster/fire pump cooler
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What determines the number of 2 1/2" outlets?
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The rated capacity of the pump . There should be 1 outlet for every 250 GPM.
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By what method are our centrifical pumps driven?
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Mid-ship transfer drive
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True/Flase
The PTO on water tender 4 is disabled. |
True
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Standpipes need to deliver ____gpm to furthest/highest most outlet for ___ minutes
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Standpipes need to deliver 500gpm to furthest/highest most outlet for 30 minutes
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GPM formula for sprinkler heads flowing
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.5p + 15 x number of heads = GPM
(p = pressure of 150psi) |
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what pressure are high pressure hydrants rated at?
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200psi
95 psi residual pressure |
