Aerial Ladder Operations

Question 1

Hydraulic operating pressure on 5447

Answer 1

2800 (+- 50 psi)

Question 2

Ladder pipe general extension, angle, pressure

Answer 2

70 degrees
75 feet
80 psi smooth bore

Question 3

Which beam to extend first in a side-slope condition?

Answer 3

High side (upslope)

Question 4

What is the maximum side slope angle for full load chart?

Answer 4

5 degrees

Question 5

What is the maximum side slope angle for 50% load chart?

Answer 5

8 degrees

Question 6

What is the maximum front to back slope for full load chart?

Answer 6

5 degrees

Question 7

Minimum angle for level assist to work?

Answer 7

1 degree.
Level assist will not work if the apparatus is less than 1 degree out of level front to back or side to side.

Question 8

4105, 4417, 4806 maximum angle

Answer 8

3.5 degrees

Question 9

Seagrave emergency hydraulic pump steps

Answer 9

1. Maxi brake
2. Transmission in Neutral
3. Aerial master ON
4. Brake lock ON
5. Engine OFF
6. Ignition ON
7. Emergency hydraulic switch in cab
8. Press aerial enable foot pedal
9. Hold joystick for desired operation
10. Activate emergency hydraulic switch on turntable
11. Allow pump to cool between operations

Question 10

Pierce emergency hydraulic pump steps

Answer 10

1. Maxi brake
2. Transmission in Neutral
3. Engine ON
4. Aerial master ON
5. Hold joystick for desired operation
6. Emergency hydraulic switch on turntable
7. Release EPU switch first then joystick
8. EPU has 30 minute run time and 30 minute cool down time

Question 11

Pierce electrical malfunction steps

Answer 11

1. Use manual control valves behind access door on turntable to bed ladder
2. Stow ladder
3. Unlock 5th wheel
4. Open manual stabilizer panel (to the right of normal stabilizer controls)
5. Move diverter valve UP for stabilizer function
6. Select desired stabilizer function and move valve