Paratech Rescue Support Systems(Working Air Cart) Flashcards
Before using the air cart do 9 things
1)wear proper PPEs
2)inspect nipples/couplings for damage
3)ensure nipples/couplings are free of dirt/dust/grease/grime
4)ensure all bleed valves are closed
5)ensure all control knobs are closed
6)ensure 3-way diverter valve is “OFF”
7)ensure shutoff valve is closed
8)ensure all CGA-347s are tight
9)ensure all hoses are fully inserted and
locking rings are closed
when changing a cylinder, always ensure
that ____has been released before ____
the pressure
unscrewing the CGA fitting (nut) from the
tank
when finished using the air cart do these
2 things first
1) close cylinders
2) bleed off all pressure in the system
working air cart provides _____ air for tools
and equipment. it does not provide _____.
working
breathing air
the air cart is designed to _____
provide continuously regulated working air
to a variety of components
components that can be used with the
air cart include 3 types
air bag systems
rescue support/strut systems
portable pneumatic hand tools
the high pressure manifold has a _____
that tells you the _____.
high pressure guage
cylinder air pressure or the alternate
working air supply pressure
a shut-off valve is provided between
the _____ and a _____ to permit access
to _____.
high pressure manifold
CGA-347 adapter
alternate sources of working air
4 alternate sources of working air
external cascade system
mobile air compressor
air truck
in-plant or in-facility source
the CGA-347 adapter allows 3 things
1)for filling of the air cylinders on the cart
2)for providing an alternate air source
3)for providing up to a 5500psi outlet
connection
3-way diverter valve when “ON” is getting
air from _____.
one of the cylinders
3-way diverter when “OFF” is getting air
through the CGA-347 adapter and
shut-off valve from a remote high pressure
source
the 3-way diverter allows for either bottle to be ____
for _____
selected
the 3-way diverter does not allow both
bottles to ______
simultaneously provide air
bleed valves are located between the
_____ and the _____ connected to the ____
3-way diverter valve
high pressure hose assemblies
air cylinders
bleed valves release all pressure in the
_____ between the _____ and the ______
or _____.
system
air cylinders
couplings (female for 300psi side)
nipples (male for 150psi side)
low-pressure whistle is just below the
_____ and activates when pressure within
the air source is between _____.
high pressure manifold
400-500psi
the working air cart has ____ low pressure
regulators. one is for ____ and has the
____ and the other is for _____ and has the
_____.
2 up to 150psi max nipples up to 300psi max couplings
each low pressure regulator has it’s
own ____ for ensuring it’s respective low
pressures.
adjusting knob
each low pressure regulator is between
the _____ and their ____.
high pressure manifold
respective low pressure manifold
each nipple and coupling have their own
_____
shutoff control knob
each low pressure manifold has a ____ to
show the outgoing pressure to a component
pressure gauge
maximum inlet pressure is _____ at the ____
5500psi
CGA-347 adapter
the air cart has an adjustable handle for
____ of movement. it also allows the cart
to be operated safely 3 ways
ease
vertically
horizontally
at an angle
the cart weight with 2 empty cylinders
the cart weight with 2 full cylinders
110#
122.2#
rotate adjusting knobs on the low
pressure regulators _____ to close
counter-clockwise
if charging an air cylinder via an external
source follow 16 steps
1)ensure all nipples/couplings are closed
2)ensure both low pressure regulators
are closed
3)ensure shutoff valve is closed
4)ensure all bleed valves are closed
5)orient 3-way diverter valve towards
cylinder to be filled
6)remove protective cap for CGA-347
7)connect external source to CGA-347
8)open air cylinder
9)open shutoff valve
10)open external source and fill cylinder
11)close air cylinder upon filling
12)close external source
13)open bleed valve
14)close shutoff valve
15)disconnect external source and
cap CGA-347 adapter
16)orient 3-way diverter as necessary
do not use external source that ____ the
capacity of the air cylinder
exceeds
to open air cylinder valves turn ____
counter-clockwise
to open low pressure regulators turn ____
clockwise
the shutoff valve can be used in _____
directions. the air cylinders can be used to
provide _____ thru the _____.
both
high pressure air
CGA-347 adapter
control knob banks are on _____
each low pressure manifold
control knobs align vertically for ____
closed
control knobs align horizontally for ____
open
5 gauges
2 air cylinder gauges
1 high pressure manifold gauge
2 low pressure manifold gauges
when operating and will be using air supply
from the cylinders, open _____.
both air cylinders
when initially orienting the 3-way
diverter valve to an air cylinder,
the _____ briefly
low pressure whistle will sound
rotate low-pressure regulator knobs ____
to increase pressure
clockwise
rotate low-pressure regulator knobs ____
to decrease pressure
counter-clockwise
adjust finally in the _____ direction for the
low pressure regulators
increasing
to switch to the other air cylinder, simply
_____ to the full cylinder. since both tanks
have already been _____, this switch enables
_____ air supply
orient the 3-way diverter valve
opened
interruption-free
to switch to the external source all you have to do is \_\_\_\_\_ and then \_\_\_\_\_ and then open \_\_\_\_\_\_. continuous ops can occur if the external source has been turned on and the shutoff valve opened prior to moving the 3-way diverter valve
orient the 3-way diverter facing forward
open the shutoff valve
the external air supply
8 steps to shut down air cart
1) turn control knobs to closed position
2) close air cylinder valves/ext. air supply
3) close shutoff valve if necessary
4) orient 3-way diverter valve to “OFF”
5) disconnect hoses from nipples/couplings
6) open both bleed valves, bleed, close
7) replace air cylinders
8) inspect/maintain make ready
5 inspection checks for the air cart
1)dust/dirt/grease/grime
2)loose hardware
3)cracked/deformed parts
4)during ops, check for air leaks
5)make sure low pressure gauge is steady
at all times
there is a _____ to assure that the max.
low pressure are not exceeded. adjusting
this screw will _____ pressure.
pressure relief adjustment screw
increase/decrease
