Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

ENGINE COMPANY ENGINEER 4TH EDITION > THROTTLES AND PRESSURE CONTROL > Flashcards

THROTTLES AND PRESSURE CONTROL Flashcards

Pages 31-33

1
Q

Pressure Governor

The pressure governor consists of only two major parts:

A

the control box (located on the pump panel) and pressure sensor (installed within the discharge manifold).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Pressure Governor

When the pump is engaged the cab throttle controls (accelerator pedal and high idle switch) are _____.

A

disabled

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Types of Governors and Mode of Operation

JFRD utilizes two types of pressure governors:

A
  • Pump Boss 100

* Pump Boss 200

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Types of Governors and Modes of Operation

Each pressure governor has two modes of operation:

A

PSI and RPM

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

PSI Mode

Any changes to the discharge pressure will be compensated by the governor through a change in:

A

RPM

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

PSI Mode

What affects discharge pressure once the PDP is set?

A

The most common disruption to PDP is the opening and closing of nozzles.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

PSI Mode

The engineer must select PSI mode for the following fireground operations:

A
  • Pumping handlines
  • Pumping ladder pipes or ground monitors
  • Supplying a sprinkler or standpipe systemp
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

RPM Mode

Engineers must select RPM mode for the following fireground operations:

A
  • Drafting
  • Relay pumping
  • Charging 5” hose
  • PSI mode malfunction
  • pumping operations that exceed 300 PSI
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

RPM Mode

During a drafting operation, the pump may initially be empty. When there is no water in the pump the ____ ____ will not allow the governor to operate in ____ ____.

In ______ the pressure sensor is disabled, allowing the engineer to increase _____ in order to draft.

Once a draft is established you may choose to change to ______.

A

Pressure sensor
PSI MODE

RPM MODE
RPM
PSI MODE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Governor Operation

With each governor type the following steps must be accomplished in the order listed to ensure proper operation.

A
  1. Engage the pump
  2. Open the TANK TO PUMP valve
  3. Open the appropriate discharge valve
  4. Operate the governor
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

RPM Mode

When relay pumping only the attack engine needs to operate in _____.

A

PSI MODE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

RPM Mode

When opening the LDH discharge valve the PDP may drop suddenly. The pressure sensor will detect this pressure drop and signal the motor to increase ____.

This may result in a pressure spike on other hose lines, possibly to unsafe levels.

Change to ______ before charging 5” hose when using other lines.

A

RPM

RPM MODE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

To operate the Pump Boss Governor:

Once the pump is engaged the Pump Boss governor is on and defaults to ________. It is ready to pump.
The digital readout will indicate the ____.

Changing modes is accomplished by pressing and holding the ______ button or ___ / ___ button for __ ______. The indicator will display the mode selected.

A
  • PSI MODE
  • PDP
  • MODE
  • PSI/RPM
  • 3 seconds
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Presets

Each pressure governor has a PRESET button and both an RPM and PSI preset are programmed by ____.

The engine PSI preset is -
____ PSI and tanker PSI preset is ____ PSI. The RPM preset for both engines and tankers is _____ .Using the PRESET button is optional.

A
  • TSF
  • 110 PSI
  • 50 PSI
  • 1100 RPM
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Tips for Pressure Governor Operation

• Operate two-stage pumps routinely with the transfer valve in _______.
This will result in more efficient operation of the pressure governor and is not harmful to the pump or motor. The discharge pressure at idle will be ___-___ PSI

A
  • VOLUME

* 30-40 PSI

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Tips for Pressure Governor Operation

If your water supply runs low the governor will attempt to maintain ____ by increasing ____.

If the pump cannot maintain at least ___ ___ ___, the governor will return the ____ to idle. This is a safeguard to prevent ______.

A
  • PDP
  • RPM
  • 30 PSI PDP
  • RPM
  • cavitation
17
Q

Tips for Pressure Governor Operation

• Flow from the booster tank is limited to ____ - ____ GPM on all JFRD engines.

If you attempt to exceed this amount the digital readout may indicate LO ______ or LO ______ and the governor will return ____ to idle.

If you need to supply the deck gun from the booster tank, use the fog nozzle at ____ GPM or a _____” or _____” tip.

A
  • 700-800 GPM
  • SUPPLY or PRESSURE
  • RPM
  • 500 GPM
  • 1–1/4” or 1-3/8”
18
Q

Tips for Pressure Governor Operation

• When residual pressure gets low (____ __ ___), the governor may sense a supply problem and return RPM to idle. If additional volume is not available and you can safely operate at this residual pressure, change to RPM MODE and continue pumping.

A

• Below 10 PSI

19
Q

PSI Mode

Pumping operations that exceed ____ PSI will require the engineer to change to ___ mode. The pressure sensor is disabled above ____ PSI

A

300 PSI

RPM

300 PSI

20
Q

RPM Mode

Selecting the ___ ___ disables the pressure sensor, and the governor will maintain the set RPM only

A

RPM MODE

21
Q

Presets

The pressure governor can also serve as a high idle control in ____ ____ with the pump _____.

A

RPM MODE

disengaged

22
Q

Tips for Pressure Governor Operation

No water hammer can occur from a ___ change

A

MODE

ENGINE COMPANY ENGINEER 4TH EDITION (15 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions