PS Magazine - TB 43-PS-590
PS, The Preventative Maintenance Monthly
ISSUE 590
JANUARY 2002
FIRE EXTINGUISHER ASSEMBLY
FIRE EXTINGUISHER ASSEMBLY
RECHARGE EXTINGUISHER ASSEMBLY WHEN PRESSURE GAGE DOES NOT READ
WITHIN PRESSURE SHOWN ON TABLE AT AMBIENT BOTTLE TEMPERATURE
TEMP (
°
F)
-70
-50
-30
-10
10
30
50
PRESS (PSIG)
340/640
370/490
400/520
425/550
450/580
480/610
515/645
TEMP (
°
F)
70
80
90
100
120
140
160
PRESS (PSIG)
550/680
590/720
625/755
670/800
730/860
750/880
880/1250
CHARGE WITH 8.3 TO 8.5 HEPTAFLUOROPROPANE (C
3
HF
7
), MEETING
ASTM D6065 AND ASTM 6064, TYPE I - CHARGE WEIGHT FOR C
3
HF
7
ONLY,
OR TYPE II.
SUPERCHARGE WITH N2 MEETING FED SPEC A-A-59503, TYPE I,
GRADE A OR B, CLASS I, 600 + / - 5 PSIG AT 70
°
F OR EQUIVALENT
(SEE TABLE ABOVE)
JAN 02
19
MLRS Carrier…
W
hen you get a new or refilled FM-200 engine compartment fire extinguisher
bottle, it may have an unfamiliar decal, Bradley and MLRS crewmen.
The new decal displays a whole new set of pressure and temperature limits for
the fire extinguisher bottle. If your bottle has the new decal,
it
determines whether
or not your vehicle is NMC,
not
the original decal or the old PMCS info in your
-10-1 TM.
The old decal and the -10-1 TMs say your Bradley is NMC if the pressure
gauge doesn’t read within ±25 psi of the pressure shown for the bottle’s ambient
temperature. The new decal provides a much wider psi range.
let me
get this
straight…
You
believe
in
PM?
and You
care
about your
MLRS?
“Once you’ve
checked the
outside, don’t
forget to eye-
ball the pin
nuts on the
inside
of the
track.”
You’re
only doing
half
the
job!
yes
ma’am!
mm-
hmm!
no
way!
yep.
that’s
what
I
do!
now
that‘s
what I call
GOOD PM!
M2/M3-Series Bradleys, MLRS Carrier…
what do
I do?
The TM
gives one
presure
limit…
…and the
decal on
your fire
extinguisher
bottle gives
a different
one!
Haven’t
you
heard?
The
new
decal
has the
straight
stuff!
Look for
missing or
off-center
pin nuts and
protruding
pins.
If you
spot
any
-
whether
they’re on
the
outside
or
inside
-
your
vehicle is
NMC.
Tell
your
mechanic.
my
fill
weight
has
been expanded
slightly, too.
my
new
fill weight
is 8.3 to 8.5
pounds.
You walk around
the outside of
your vehicle to
check the
track
pin nuts
after
every
operation?
590. 18-19 (C)
11/23/01
4:02 PM
Page 1
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