Redmond Fire

1
Ladder Truck 451 Operations

• Redmond Fire Rescue

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Ladder Truck 451 Operations

• Course Objectives
• General Information
• Safety Considerations
• Capacities and Limitations
• Controls and Indicators

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Ladder Truck 451 Operations

• Course Objectives (continued)
• 5. Set-Up Procedures
• Outrigger Operations
• Aerial Operations
• Emergency Power Operations

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General InformationAH-75 Series LTI Aerial Truck
(Quint)

• Telescopic Ladder
• Rear Mount
• Retracted 31.5 ft.
• Extended 68.6 ft.
• Maximum Reach 75 ft
• Measured at full extension and full height, from
  top rung perpendicular to ground. Heel pin at 9
  ft.

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General Information AH-75 Series LTI Aerial
Truck (Quint)

• Power Take-Off
• Direct drive off of the chassis transmission
• The PTO for the ladder operation does not effect
  the main fire pump

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General Information AH-75 Series LTI Aerial
Truck (Quint)

• Outrigger System Emergency Power Unit (EPU)
• 12 volt dc 1.5 gpm _at_ 2000 psi.
• The EPU operates the outriggers and ladder
  controls in the event of power engine failure.

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General Information AH-75 Series LTI Aerial
Truck (Quint)

• Outrigger System
• Double-box beams and jacks, powered by double
  acting hydraulic cylinders with intergal holding
  valves manual T-pin locks

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General Information AH-75 Series LTI Aerial
Truck (Quint)

• Load Chart
• Mounted at the aerial control station, the load
  chart
• identifies aerial capabilities of reach, height
  and capacity to
• permit safe and efficient use of the aerial.
  Instructions relating
• to proper aerial use and special situations are
  also on this
• chart.

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Ladder Elevation SystemDual, double-acting
hydraulic cylinders with integral holding valves
0 to 75 degrees elevation
General Information AH-75 Series LTI Aerial
Truck (Quint)
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General Information AH-75 Series LTI Aerial
Truck (Quint)

• Angle Indicator
• A liquid filled indicator mounted in view of the
  aerial control station shows the
• angel of elevation as the ladder is raised.
  Angle values are used to determine
• proper loading as identified in the Load Chart.

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General Information AH-75 Series LTI Aerial
Truck (Quint)

• Aerial Swing System (Rotation)
• Anti-friction ball bearing and ring gear attach
  aerial to
• chassis, providing 360 degree continuous
  rotation
• planetary gear reduction drive powered by
  hydraulic
• motor automatic, disc-type brake.

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Ladder Telescoping SystemExtension/Retraction

• Dual, extension/retraction cylinders and cable
• drive combinations

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Main Fire Pump

• 1500 GPM waterous multi-stage mid-ship pump.
  Operated by PTO off the transmission. With
  pressure sensor governor.

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• Onan 8W Diesel Generator
• The generator operates all 120V external lights
  and outlets mounted on the truck. A remote start
  switch is located on the drivers side
  compartment along with a circuit breaker panel.

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• Safety Considerations
• Refer to Section 2, page 2-1 for information
  regarding safety considerations
• Also refer to department SOG on Truck Operations
  Safety Procedures

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Capacities and LimitationsAerial Ladder
Capacities

• Tip capacity is 500 lbs. with wet pipe from 0-75
  degrees of elevation at full extension.
• Tip capacity is 600 lbs with dry pipe from 0-75
  degrees of elevation at full extension.

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Capacities and LimitationsOperating on a Grade
(Front to Rear)

• 0-3.5 degrees or 0-6 grade
• Normal operation at 500 lbs

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Capacities and LimitationsOperating on a Grade
(Front to Rear)

• 3.5-8 degrees or 6-14 of grade
• Capacities reduced by 50-250 lbs tip load

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Capacities and LimitationsOperating on a Grade
(Front to Rear

• On grades over 8 degrees or over 14 do not
• operate the ladder until all capacities are at
• zero.

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Capacities and LimitationsOperation on a Grade
(Side to Side)

• The level gauges at the rear of the truck will
  indicate if the side to side angle is within the
  appropriate operating ranges.
• Each white mark indicates 2.5 degrees side to
  side
• The bubble can not be changed more than 2.5
  degrees with the jacks.
• RED Do Not Operate
• Yellow Reduced 50
• Green Normal Operation

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Capacities and LimitationsLoad Chart
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Capacities and Limitations

• You can operate this apparatus from 0-75 degrees
  at full extension with 360 degree rotation at
  full capacity
• WHEN JACKS ARE PROPERLY SET

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Capacities and LimitationsShort Set Jacks

• All capacities are reduced by 50 whenever a jack
  is short set. This is only on the side of the
  fully extended jack because
• THE LADDER WILL NOT BE OPERATED
• PAST THE MID-LINE OF THE TRUCK
• TOWARDS THE SHORT SET SIDE.

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Capacities and LimitationsWater Tower

• The nozzle of the master stream can be moved 90
  degrees from side to side with water flowing as
  well as 90 degrees up and down with water
  flowing.
• The nozzle should NOT be pointed at the ground
  when the nozzle is within 20 feet of the ground.

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Capacities and LimitationsRules of Thumb

• Space climbers on a ladder so that no more than
  two climbers are on any one section at a time.
• A LADDER IS BEST SUPPORTED
• UNSUPPORTED

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Controls and IndicatorsOutrigger Controls and
Indicators
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• Controls and Indicators
• Aerial Ladder Controls and Indicators

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Set-Up ProceduresUPON ARRIVAL AT THE SCENE

• Determine the intended use of the apparatus
• Engine
• Aerial
• Identify ground conditions and slopes
• Look for overhead obstructions
• Ensure that adequate room is available for full
  outrigger extension and deployment.
• If you must short set a jack, can you still get
  the compartment open?

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Set-Up Procedures Outrigger Operation

• Place transmission in neutral
• Set parking brake
• Set aerial application switch
• Depress ladder power switch
• Depress PTO (ladder) switch
• If the pump is to be used also then engage the
  pump at this time as well. Pump must operate in
  drive and fast idle will then be de- activated.
  Then exit cab.

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Set-Up ProceduresOutrigger Operation

• 11. Set all four wheel chocks on the front
  wheels
• 12. Proceed to the rear of the apparatus
• 13. Starting on the high side, open outrigger
  control door
• 14. Turn on fast idle
• 15. Move outrigger to fully extended position
  (out)
• 16. Close door and move to the other side
• 17. Open outrigger control door

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Set-Up ProceduresOutrigger Operation

• Extend second outrigger to fully extended
  position
• Shut off fast idle and close door
• Place jack pads under each outrigger, scraping
  away large stones. Do not set jacks over
  man-holes or sidewalks
• Open outrigger control door on high side of
  apparatus
• Turn on fast idle

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Set-Up ProceduresOutrigger Operation

• Check alignment of truck with cab, ensure
  there are no twists.
• Ensure that the bulge is removed from rear
  tires.
• Place pins in both outriggers, leaving at
  least ½ gap above the hole and outrigger
  channel.

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Set-Up ProceduresOutrigger Positions
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Set-Up ProceduresOutrigger Operation

• Ensure that jacks are down and locked.
• Proceed to pedestal.
• Check again for overhead obstructions.
• Open lid to control box and engage fast idle.
• Raise ladder to at least 30 degrees, to ensure
  that you have cleared the truck.

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Set-Up ProceduresOutrigger Operation

• Rotate to objective.
• Extend to objective.
• Align rungs.
• Turn off fast idle.

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Shutting Down the Ladder

• Turn on fast idle
• Fully retract ladder until rungs are aligned
• Bed ladder until 1000 psi registers on the
  hydraulics
• Shut off fast idle
• REMOVE PINS FROM BOTH OUTRIGGERS
• Open outrigger control door
• Turn on fast idle
• Bring outrigger up HALF WAY
• Bring opposite outrigger up and in all the way
• Bring the other outrigger the rest of the way up
  and all the way in
• Shut off high idle and close both outrigger
  control doors

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Shutting Down the Ladder

• 12. Put both jack pads away
• 13. Put wheel chocks away
• 14. Shut off ladder PTO
• 15. Shut off ladder power switch
• 16. Shut off aerial application switch

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Emergency Power Unit (EPU)

• The emergency power unit consists of an electric
  motor and a small hydraulic pump which, when
  activated, allows the operator to move the aerial
  and/or outriggers in the event of a main system
  failure.
• The EPU will rapidly overheat, it is very
  important that you do not operate the unit over
  20 seconds without a 5 minute rest period. In
  cases of extreme emergencies it may be necessary
  to run the unit longer.

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Emergency Power Unit (EPU)

• Activate the manual circuit selector located at
  the rear of the turntable pedestal and at the
  outrigger control panel.
• Activate the EPU switch at either of the
  outrigger control stations.
• Activate the appropriate function lever.
• Release the function lever first then the EPU
  switch.
• After the operation is complete, then return both
  manual circuit selector switches to normal.

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• Before going out to practice with the apparatus,
• are there any questions?