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Engine Ops | Pump Ops 4

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Questions and Answers

What is the purpose of connecting the water source high on the pump?

To increase the pressure in the pump housing
To prevent water from entering the pump
To allow water to enter backward and flush debris out of the lower pump openings (correct)
To redirect water flow to the front of the truck

Why is it important to open all drains for the associated intakes and discharges?

To increase fine sediment in the lower pump openings
To reduce the water pressure in the hydrant
To flush out debris by opening the lowest possible hole in the piping of the pump (correct)
To decrease the water flow through the pump intakes

What is the purpose of back flushing the intake valve on E-15?

To remove debris by allowing water to back flow through the pump intakes (correct)
To prevent debris from entering the pump housing
To disconnect a hose bed pre-connect
To increase the pressure in the pump housing

Why are hose bed pre-connects and cross lays not flushed during this process?

Because they are located at a higher level than the pump (D) Signup and view all the answers

What happens when the engine is connected to the hydrant and water enters backward through the discharge side of the pump housing?

Debris is flushed out of the lower pump openings (D) Signup and view all the answers

Why is it important to open up the large diameter discharge after connecting the engine to the hydrant?

To allow water to enter the discharge side of the pump from the hydrant (A) Signup and view all the answers

What should be done with the large diameter discharge after flushing all discharges, intakes, and drains on the officer side and driver side of the pump panel?

Close it (A) Signup and view all the answers

Why should the caps and connections be inspected after disconnecting the hydrant?

To look for rips or tears in the gaskets (C) Signup and view all the answers

What is the purpose of keeping all pumps wet throughout the year?

To prevent seizing of valves (D) Signup and view all the answers

According to the winter safety alert, what should be done with the master drain during freezing weather?

Keep it closed (C) Signup and view all the answers

What precautionary steps should be followed when an engine must be taken out of service during the winter months?

Leave pump, tank, and all drains open to drain all water completely (C) Signup and view all the answers

What was the result of not completely draining all water from an engine that was stored outside in cold weather?

The discharge housing cracked due to freezing water (A) Signup and view all the answers

What issue has been observed with Pump Boss engines in cold weather?

Transducers between valves and pump panels freezing (A) Signup and view all the answers

What does the FO6 and EO6 fault code indicate on the Pump Boss display?

Issue with frozen transducer translating hydraulic pressure (A) Signup and view all the answers

What should pump operators do during winter months if there is a transducer failure on a Pump Boss engine?

Switch to RPM Mode for limited operations (C) Signup and view all the answers

What will help limit issues with frozen transducers on Pump Boss engines?

Following cold weather maintenance procedures (D) Signup and view all the answers

What happens if there is a failure of either of the transducers on a Pump Boss engine?

Limited operations above idle in Pressure Mode (A) Signup and view all the answers

What is the purpose of recirculating water through the pump during prolonged incidents in cold weather?

To keep water from freezing in low parts of pump piping (A) Signup and view all the answers

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