Generator/APU and Green Star.ppt

Generator/APU and Green
Star Orientation
Generator Overview
• The 2013 Rosenbauer rear mount pumper is
equipped with an 11.5 KW diesel generator
which is mounted on top of and towards the
front of the body.
• The generator may be referred to as an
“APU” in some manuals or instruction tags
supplied with the apparatus.
• “APU” stands for auxiliary power unit.
Generator Overview
• Mounted on top of apparatus inside enclosure
Starting power comes
from the main truck
Fuel supply comes from
the main fuel tank on
For safety reasons generator will not start if cover on generator
enclosure is open; but for maintenance purposes, generator will
remain running if it was started prior to opening the cover.
Generator Check Out
Engine oil and coolant checks are located on generator
Equipped with sensors to shut down the generator in case
of low oil pressure or high coolant temperature.
Generator Starting Procedure
Primary start/stop switch location is on the
dash in the cab
Generator Starting Procedure
Secondary start/stop switch location is adjacent to
the generator instrument panel and breaker box
in Compartment 3.
Generator Starting Procedure
To start Generator:
1. Ensure cover on generator enclosure is
2. Ensure battery master is “ON”
3. Push “Gen” switch on dash once. Do not
hold down.
– The red light in the switch will flash while the
generator preheats automatically. Once
preheated, the generator will start and the
light become steady.
Generator Starting Procedure
• Generator can be started
and stopped from either
one of the two locations.
• It is acceptable to start it
at one location and shut it
down at the other.
• If necessary, generator
status can be monitored
using display and gauges
located in Compartment 3
Stopping The Generator
• Push “Gen” switch on dash once. Do not
hold down. Generator will shut off and red
indicator light in switch will turn off.
**It is critical that the generator is shut
down prior to shutting off the battery master.
It is an acceptable practice to leave the
generator running with the chassis engine
off, i.e., master ignition off, but any time
generator is running battery master
must be left on.**
Generator Supplies Power for the
Following Equipment
RV Air Conditioner/Heater
20 amp household outlet inside cab
behind officer seat.
Note: these two components default to run off shore power
when the apparatus master battery switch is turned off. For
them to receive power from the generator, the rocker switch
on the dash must be pushed after the generator is started.
Always disable the RV air and outlet prior to shutting down
the generator by pushing rocker switch on dash again.
Generator Supplies Power for the
Following Equipment
750 watt Fire Research optimum
light on front of apparatus.
Activated by Front Flood
Switch on Dash
Generator Supplies Power for the
Following Equipment
1500 watt push up and 750 watt
recessed Fire Research optimum
light on each side of the apparatus.
Activated by respective DS or
PS Flood light switch on Dash
Generator Supplies Power for the
Following Equipment
200’ electric cord on reel in Compartment 3
Slide out captive roller provided to
prevent damage to body from cord.
Reel rewind button located on
wall below cord reel next to
Amkus power plant.
Generator Supplies Power for the
Following Equipment
20 amp twist lock outlet
on PS rear of body
under ladder
compartment door
Generator Supplies Power for the
Following Equipment
Green Star System
What is Green Star?
Green Star is Rosenbauer’s Idle
Reduction Technology System
IRT for short
So what is Idle Reduction
Technology or IRT?
IRT is simply a computer system installed on
the apparatus which is designed to help
reduce the need for the apparatus main
chassis engine to idle by using the APU to
support the apparatus systems.
Why have an IRT system?
Emergency vehicles are notorious for excessive
amounts of idling for many reasons which
To maintain
battery voltage
due to the huge
• Keeping
draw put onduring
the electrical
system by
lights of the cab
• Climate
-12 volt scene
lighting equipment such as
• Charging
of firefighting
step, and cab lighting
of electrically powered doors,
locks, reels, etc.
Green Star
The Green Star system accomplishes these goals
and provides additional benefits for our personnel,
apparatus, community and the environment.
Benefits of Green Star Include:
• Reduction of carbon footprint by reducing
• Less noise pollution since APU operation is
• Provides for a quieter emergency scene
allowing for easier communication
• Reduction in fuel usage. APU burns
approximately 1 qt of fuel per hour vs 1 gal of
fuel burned by main chassis engine each hour,
this equates to 75% reduction in fuel costs.
Benefits of Green Star Include:
• Reduction in diesel exhaust fluid consumed
• DPF regenerations required less frequently.
Soot builds up faster in DPF when idling than
when driving and less engine use will
obviously decrease build up. Note: APU does
not have a DPF or utilize DEF.
• Increased longevity of DPF and emissions
system components
• Reduction of idling time can translate into
significant savings in DPF service and
maintenance costs
Benefits of Green Star Include:
• Fewer engine hours logged will space out
preventive maintenance intervals resulting in
fewer vehicle trade outs which cause
frontline engine to be out of service
• Maintenance cost savings due to fewer PM’s
(oil, supplies and labor)
• Less wear and tear on chassis engine
increases vehicle longevity
• Green Star operation and its benefits can be
tracked by maintenance personnel
So How Does Green Star Work?
The Green Star system is active any time all of
the following conditions are met :
• Battery master on.
• Ignition on
• Chassis engine running
• Parking brake set
• Transmission in Neutral
• Pump not engaged
• Cab down and locked
• Generator enclosure cover is closed
So How Does Green Star Work?
• The status of the
system is indicated by
the green light inside
the switch labeled IRT
disable which is
located on the dash
near the generator
start/stop switch.
• If the light is ON, the
system is active. If
the light is OFF the
system is inactive.
So How Does Green Star Work?
If the Green Star system is active, the computer will allow
the chassis engine to idle for 3 minutes.
After 3 minutes of engine idling • The chassis engine will automatically shut down
• The APU will start (preheating is done
• You will notice that the dash instrumentation will
shut off. This is because behind the scenes the
Green Star computer has shut off the ignition
when it shut down the chassis engine. This is
normal even though the actual ignition switch is
still in the “ON” position.
Green Star Capabilities
• The APU has an
additional alternator
to maintain battery
voltage and its own
AC compressor to
continue operation
of the chassis
climate control
Green Star Capabilities
• The VMUX
remains active so
any settings for
the HVAC system
will stay on and
the APU will be
able to continue
operation of the
chassis air
Green Star Capabilities
• Of course the APU is now operating so any of
the 120/240 volt equipment is also available
to be utilized, i.e., flood lighting, RV AC, cord
reel, etc.
• It’s that simple!
Don’t listen
to the FROG!
Who said being Green wasn’t easy?
Resuming normal chassis operation
• To resume normal chassis
operation, simply restart the
chassis engine by using the
main engine start button on the
• The act of starting the truck
(pressing the starter button) will
reactivate the dash
instrumentation (all gauges and
the LCD info center). Sometimes
there is a slight delay in this
happening. This is normal.
Resuming normal chassis operation
• Starting of the main
engine will deactivate the
Green Star system but the
generator will remain on.
• The operator will be
required to shut down the
generator if it is no longer
needed to operate any
120/240 volt equipment.
**Always ensure that the
generator is shut off prior
to shutting down off
battery master switch**
APU running
Red light on
Green Star
Green light off
Green Star Questions
What if the apparatus is in green mode and I
want to shut down the APU so I can
completely shut down the apparatus and turn
off the apparatus battery master, but have no
need to restart the main chassis engine?
Green Star Answers
While the system is in
“green” mode the
operator will not have
the ability to shut down
the APU without first
disabling the Green Star
APU running,
Red light on,
unable to be
shut off
Green Star
Green light on
Green Star Answers
• Normally disabling of the Green Star happens
automatically when the main chassis engines
is started.
• In this situation to disable the system and
regain control of the APU start/stop switch
simply press the IRT disable switch.
• This disables the Green Star system. The
green light in the IRT disable switch will go off
and you now have the ability to stop the APU.
Green Star Answers
APU running Red
light on, switch
function restored
Both Green Star and APU off.
Green Star
Green light off
Green Star Answers
After stopping the APU, you can now
physically shut off the ignition switch and
battery master to completely shut down
the apparatus.
Green Star Questions
Is it possible to prevent the Green Star
system from allowing the apparatus to
go into green mode?
Green Star Answers
There are likely times when all the conditions will be
met to activate the Green Star system indicated by
the green light coming on in the IRT disable switch,
but the operator does not want the apparatus to go
into green mode.
An example might be during morning check out or
possibly on a call where you are staged for a short
time and do not want the apparatus to shut off due
to the likelihood of having to move the apparatus at
any time.
Green Star Answers
To deactivate the system and prevent the
apparatus from going into green mode, simply
press the IRT disable switch on the dash prior to
the Green Star system activating. This
deactivates the Green Star system.
The goal of providing this system is to use it and
reap the benefits it provides. The engineer should
use discretion on when it is necessary to disable
the system and allow it to operate as designed
whenever possible.
Green Star Questions
How do I reactivate the Green Star system
after having previously pressed the IRT
disable switch on the dash?
Green Star Answers
• The Green Star system can be reactivated by
performing one of the following1. Cycle the parking brake from engaged to
disengaged, then re-engage it
2. Cycle the apparatus ignition switch from “ON” to
“OFF”, then turn the ignition switch back to the
“ON” position and start the chassis engine.
Green Star Answers
Reactivation of the system is confirmed by the
green light in the IRT disable switch coming
Once it is reactivated, if all conditions
previously discussed are met, the 3 minute
timer will start again in order to put the
apparatus into green mode.
Green Star Questions
What if the alternator on the APU can
not keep up with the electrical
requirements of the apparatus while on
scene of an incident?
Green Star Answers
If the vehicle battery voltage drops below 12.3
volts, the main chassis engine ignition will be
initiated and the vehicle engine will automatically
start to recharge the batteries.
This will disable the Green Star system and allow
the main engine to continue to run. If green
mode is desired again follow the procedures for
reactivating the Green Star system.
Green Star Questions
What if we want the RV air to run in
addition to the chassis air while in green
Green Star Answers
Operating the RV air in green mode is the
same as operating it off the APU when not in
green mode.
Once the APU is running simply press the RV
AC switch on the dash to supply power to the
RV AC unit.
Green Star Questions
What happens if we started the APU
while driving to operate the flood lights
or RV AC or started it any time prior the
apparatus going into green mode?
Green Star Answers
Once the parking brake is set, assuming all other required conditions are
met, the timer will start and after the 3 minutes the Green Star system
will activate like normal. After the chassis engine will shuts down;
The system will recognize the APU is already running and will not need
to start the APU but will convert its operation into green mode allowing
the APU AC compressor and alternator to function as designed to support
chassis needs.
Even though the operator started the APU, if stopping the APU is
necessary, the Green Star system will need to be disabled by restarting
the chassis engine or pushing the IRT disable switch to regain control of
the APU start/stop switch.
**Always ensure that the APU is shut off prior to
shutting down the battery master switch**
Green Star Warnings
• Diesel exhaust temperatures on new apparatus
are extremely hot under normal conditions but
can reach temperatures in excess of 800
degrees during DPF regeneration.
• It is CRITICAL that the Safe Step door on
Compartment #8 is never left in the down
position when either the chassis engine or APU
are running. Damage to paint on door WILL
Green Star Summary
• The APU is designed to operate seamlessly
with the Green Star system regardless of
whether it is started prior to or after the main
chassis engine.
• The full benefits of the on-board 11.5 KW
generator are always available to support
emergency operations with a reliable power
source, safe working conditions with
illumination and climate control for the cab.
Green Star Summary
• The APU can always be used independently
of the Green Star system if it is started with
only the battery master switch on and the
main chassis engine off.
• Keep in mind though that the additional
benefits gained through the Green Star
system including operation of chassis HVAC
and battery charging will not be available in
this situation.

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