*Logbooks LTI Aerial Ladder Flashcards
What diameter are the K-braced rungs on the LTI aerial?
1 1/2”
How far apart are the rungs spaced apart on the LTI aerial?
14” on center
What is the retracted length of the LTI aerial?
31’8”
What is the extended length of the LTI aerial?
94’
What is the total reach for the LTI aerial when fully extended?
100ft
LTI aerial- The hydraulic pump is an axial piston, variable displacement type pump with a capacity of ___ gpm.
20 gpm
LTI aerial- Hydraulic oil is supplied from an all steel reservoir with a capacity of ___ gallons.
40 gal
LTI aerial- The ladder elevation ranges from ___º to ___º
-4° to 75°
The variable displacement type pump that provides hydraulic oil to the LTI aerial will create ____ psi and approximately ___ gpm.
2800 PSI and 20 GPM
LTI aerial- When is the emergency power unit (EPU) used?
When there is hydraulic or electrical failure
Personnel on the LTI aerial should be spaced how far apart?
10 ft
Is the LTI aerial designed with its maximum strength in the supported or unsupported configuration?
Unsupported
LTI aerial- Position the ladder approximately ___ to ___ inches above the objective.
6-12 inches
Always keep the aerial ladder at least ___ feet away from all electrical wiring.
10 ft
Do not operate an extended aerial in wind conditions exceeding ___ mph.
30
On grades between 6% and 14% (3.5º and 8.0º) capacities of the aerial are reduced by ___%
50%
On grades between ___ and ___degrees, capacities of the aerial are reduced by 50%
3.5 and 8 degrees
On grades between ___% and ___%, capacities of the aerial are reduced by 50%
6% and 14%
Operating the LTI aerial on grades in excess of ___% (or ___ degrees) is prohibited.
14%
9 degrees
In relation to the aerial load chart, the turntable of the aerial is considered level if the street grade is less than ___% or ___ degrees
6% or 3.5°
The fast idle switch at the outrigger control box will set the engine speed between ____ and ____ rpm.
1500-1600 rpm
‘03 ALF- When the load on the aerial is between ___% to ___%, 19-20 bars will illuminate on the “Aerial Loading Warning Display”. The display will also begin to flash.
90-100%
‘03 ALF Aerial Loading Warning Display - When the max load on the aerial is exceeded by ___ to ___lbs, an alarm on the pedestal will sound.
50-100lbs
LTI aerial- the outrigger system relief valve relieves at _____ psi
2000 psi
LTI aerial- For the apparatus level indicator, yellow indicates ____ percent operating capacity. (___ to ___degrees)
50%
3.5° to 8°
LTI aerial- The green, yellow and red marks on the Apparatus Level Indicator represent what operational limitations?
Green- full operating capacity
Yellow- 50% operating capacity
Red- aerial operation prohibited
LTI aerial- In the event of an electrical failure, once activated, the _______ allows hydraulic fluid to the outrigger valve bank and aerial controls
Manual Circuit Selector (blocking solenoid valve)
‘03 ALF- When the load on the aerial is ___%, 18 bars will illuminate on the “Aerial Loading Warning Display”. The display will also begin to flash.
80%
‘09 ALF- The anchor attachments points on the 5th wheel have a rating of ______ lbs.
9000 pounds
‘06 and ‘09 ALF LTI- While using the EPU and the rotation interlock override, The aerial can be moved ___ to ___ degrees past the tiller cab toward the short set side and ___ degrees past the tractor cab toward the short set side.
- 8-10 degrees
2. 2 degrees
What is the tip load rating on all LTI aerials?
250 lbs
LTI Aerial- The Hydraulic System Pressure Gauge registers working pressure in the system from zero to _____ psi.
5000
LTI Aerial- The pressure in the hydraulic system to hoist the aerial should not exceed _____ psi
2800
LTI Aerial- The pressure in the hydraulic system to rotate the aerial should not exceed _____ psi
1500
LTI Aerial- The pressure in the hydraulic system to extend or retract the aerial should not exceed _____ psi
2000
LTI Aerial- The inclinometer at the base of the aerial is a floating ball-type angle indicator calibrated from ___ to ___ degrees.
-20 to +80 degrees
LTI Aerial- Located along the handrails of the main section are extension indicators marked off in ___ foot increments.
5
LTI Aerial- An “over the rear” aerial throw is defined as angles up to and including ___ degrees to either side of the apparatus centerline.
45 degrees
LTI Aerial- If on a hill, chock blocks for an aerial operation should be placed where?
Downhill side of front and tiller tires
LTI Aerial- The “outrigger fully deployed” green light on the outrigger control box will illuminate when an outrigger is fully deployed and pressure being applied to the ground is a minimum _____ lbs.
800
The proper method for deployment of the outriggers is to relieve the weight from the tractor’s ________, allowing the load forces to be absorbed by the aerial _____ and chassis frame.
Rear springs
Torque box
LTI Aerial Outriggers- When inserting the locking pin choose a hole that is a minimum ___ inch below the jack skirt, then back pin out ___ inch
1/4”
1/2”
LTI Aerial- What should you do if the apparatus turntable cannot be leveled without the outriggers raising the tires?
Do not level turntable and operate within the reduced capacities
‘06 and ‘09 ALF LTI- With the equipped aerial “rotation limiting system”, both rotational directions are allowed but swinging toward the short jacked side will be cut-out after approximately ___ degrees of rotation.
In an emergency, how would you override this feature?
4 degrees
Activate the blocking solenoid and rotation interlock override.
‘06 and ‘09 ALF LTI- In the event of electrical failure at the pedestal, what two override features must be activated in order for aerial operation?
- Blocking solenoid valve
2. Rotation Interlock Override
LTI Aerial- The EPU is a 12-volt dc electric motor and a ___ gpm at _____ psi pump
1.5 gpm
2000 psi
LTI Aerial- What in cab switch should be turned off prior to utilizing the EPU?
Aerial PTO
‘95 Simon to ‘03 ALF LTI Aerial- The EPU is rated for a maximum of ___ minutes continuous operation
3
‘95 Simon to ‘03 ALF LTI Aerial- The EPU can be used over a long period of time at a ___% duty cycle. This % equates to ___ seconds every ___ minutes.
7%
21 sec every 5 min
‘06 and ‘09 ALF LTI Aerial- The EPU is rated for a maximum of ___ minutes continuous operation
7 min
‘06 and ‘09 ALF LTI Aerial- The EPU can be used over a long period of time at a ___% duty cycle. This duty cycle equates to ___ minutes use in every ___ minutes ( which equals ___ minutes on and ___ minutes off).
23% cycle
- 3 and 10
- 3 on / 7.7 off
LTI Aerial- what is the max system pressure for the aerial hydraulic system?
2800 psi
‘93 Simon LTI Aerial only- The load gauge at the pedestal will read what color when the ladder has a forward load?
Green. Should normally be this color during normal aerial/ladder pipe operations
‘93 Simon LTI Aerial only- The load gauge at the pedestal will read what color when the ladder has a rearward load?
Orange. This occurs when:
(1) the aerial is powered into an obstruction
(2) when there is extremely high nozzle pressure from a ladder pipe operation
(3) during normal bedding of the aerial into the cradle.
LTI Aerial: outriggers
Deploy the first outrigger out and down on the low side until the bubble in the aerial leveling indicator moves just past level or ____ of an inch
1/8”
LTI Aerial:
Extension and retraction of the aerial is provided by dual, extension/retraction _____ and _____ drive combination.
Cylinders
Cable
LTI Aerial:
An automatic ____ type brake is used to stop the rotation of the aerial.
Disc
LTI Aerial:
Electrical power is supplied by the tractor’s electrical system. The aerial electrical system is a ____ wire; negative ground return type, utilizing the apparatus frame as ground
Single
LTI Aerial:
Power from the tractor’s system is transferred to the aerial through what?
Electrical swivel coupling
The coupling consists of numerous sets of brushes and brush holder assemblies, collector rings and connectors which provide uninterrupted current flow to the aerial circuits through 360º of aerial rotation
LTI Aerial:
The power take off (PTO) switch is an electric switch that energizes a _____, which allows transmission fluid to the PTO
Solenoid
Aerial operating capacities are governed by what?
The Aerial Load Chart
LTI Aerial:
An anti-friction ____ and ring gear attaches the aerial ladder to the trailer and permits 360º continuous of rotation
Ball Bearing
The construction for the outriggers are double box horizontal ____ and vertical ____
Beams
Jacks
For emergency response the beam IN and jack UP can be operated simultaneously after jack pressure is _____
Released
Beam control and jack control switches shall be operated as a single function to watch each beam and jack extend and/or retract
If at anytime the road transmission is shifted into gear while performing
aerial operations, the _____ will automatically disengage the PTO
Chelsea Hot Start
True or False?
The outrigger interlock override system is designed to allow use of the aerial in situations where lives are at risk and no other options are available
True
Outrigger Operation: Override/Emergency Operation
Prior to actuating the applicable button(s) on the outrigger valve bank,
the _____ handle must be pulled and held in the actuated position, for the duration of the outrigger operation.
4 way solenoid
This manually shifts the blocking solenoid valve, shutting off the oil to the aerial system and directing the flow to the outrigger valve bank.
When using the EPU, The system is capable of all functions in a ____ load condition
No load condition
‘03 ALF Aerial:
The Class 1 Aerial Loading Display is designed to warn aerial operators of dangerous loading conditions when the aerial device is operated at ____ (low or high?) angles of elevation.
Low
Lockout cylinders:
There are times when the drive axle might be sitting higher or lower than the steering axle (i.e. uneven pavement). In these instances, either the two front or two rear lockout cylinders will not make contact with the fifth wheel once fully extended. Does this reduce the capacity of the aerial ladder?
No, all functions and limitations are the same
‘09 ALF Aerial:
The capstan has a _____ lb rating
250
‘09 ALF Aerial:
When using the wench system, turning the handle _______ provides more torque for heavy lifting at slower speeds and _______ provides faster lifts but for lighter loads.
Clockwise
Counterclockwise
‘09 ALF Aerial wench system:
To start, wrap the rope around the mechanical winch in a _____ direction (when looking down on the unit from the top) ____ to ____ times starting at the bottom and working up.
Clockwise
4 to 5
Actual operating time of the EPU is dependent upon what two criteria?
- batteries state of charge
- hydraulic pressure in control being moved
In the event of an electrical failure, the outrigger controls and the aerial controls will become disabled because of the _____ system.
Interlock
What are the height of the handrails on the LTI aerial?
15”
