PS Magazine - TB 43-PS-622
PS, The Preventative Maintenance Monthly
ISSUE 622
SEPTEMBER 2004
Still no luck? The air outlet cap may
be leaking. Put a new cap on or seal the
outlet with your finger (wear gloves to
do that).
Look for cracks in the flowmeter and
a missing gasket at the top of the
flowmeter. That's Item 3 in the PMCS.
If it's cracked, the flowmeter won't pass
its test.
Still doesn't pass? Check that the
rainshield adapter is tight. If all that
doesn't fix the problem, it's time for that
M8A1 to go to support.
PS 622
SEP 04
23
M8A1 Chemical Agent Alarm…
Let's Keep M8A1 Alarmed
PMCS
If your M8A1 has been locked in a cabinet for weeks, the
M43A1 detector probably won't reach the green zone on its
meter in 15 minutes during PMCS. Give it longer to run.
Sometimes the M43A1 just has to run until the cell assembly
clears itself, which may take longer than 15 minutes.
If the M8A1 has been stored for a long period, also check
that the binding posts can be depressed. Corrosion could
have frozen them. Then you can't connect the detector to the
alarm. Get frozen binding posts replaced.
Here are a few
ways NBC NCOs
and operators
can keep the
M8A1 sniffing
for danger.
just give
me some time
to stabilize.
I’ve been
sitting
a
long time.
Binding posts
frozen?
Remember your NBC NCO needs to
install the air outlet filter if you're oper-
ating the M8A1 inside. Because of its
radioactive source, the M8A1 puts out
radioactive particles.
If the flowmeter is OK but the
M43A1 still can't get the ball into the
green zone, make sure the air outlet nut
is tight and the case main seal, air filter
plug seal, and air inlet seal are good.
Turn the air outlet nut clockwise with
your fingers until it's hand-tight. Report
bad seals.
Flowmeter cracked? Gasket missing?
If detector
fails, get
new cap
Rainshield
adapter
tight?
Air outlet nut tight?
Remember,
never
run the M43A1
longer than 30 seconds with the air out-
let sealed. Otherwise, heat destroys its
circuitry.
I’m so
alarmed
by this
chemical
threat!
yaaahhhh!
our m8
has come
through
for us!
if your M8A1
chemical agent
alarm
doesn't
stay alarmed,
you could have
alarming
results.
every-
one in
their
jslist!
622.22-23(C)
7/26/04
9:09 PM
Page 1
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