PS Magazine - TB 43-PS-735
PS, The Preventative Maintenance Monthly
ISSUE 735
FEBRUARY 2014
45
PS 735
FEB 14
If you’re in a combat environment, clean all eight Flters
every day. If you’re not in combat, clean them weekly. Blow
them clean with low-pressure air. It’s even better to have two
sets of Flters you can swap out. When you remove one set, wash
them out and let them air dry. What happens if you don’t keep
the Flters clean? They clog up and the Sentinel’s electronic
gear overheats. You start getting faults and components shut
down. Just keeping the Flters clean is the best way to keep your
Sentinel alert.
If dirt builds up inside the Sentinel, electrical connectivity
suffers, plus components can overheat. Use tech wipes and
isopropyl
alcohol to clean out the inside of the compartment. Don’t
use plain rubbing alcohol because it takes off the protective Fnish.
Don’t use water, either. It will cause corrosion and connectivity
problems. Clean the cable connections with isopropyl alcohol, too.
They get clogged with dirt.
Sometimes the Sentinel’s voltage and frequency can ±uctuate
during startup. After the Sentinel has been running 10 minutes,
make sure the voltage is 208 VAC and the frequency is 400 Hz.
If voltage and frequency are too high, the circuit cards could be
damaged. If they’re too low, the Sentinel will show faults.
Sentinel
Radar
System…
we’ve got
incoming
missiles!
eh? what’s
that?
speak
up, willya!?
Remember, the Sentinel
produces a
huge amount
of voltage. You can be
cooked well-done if you
forget to turn off the
power before cleaning.
Clean out
compartment
with
tech wipes
and
isopropyl
alcohol
Check for
208 VAC
and 400 Hz
Clean all 8
filters daily
in a combat
environment.
Otherwise,
clean them
weekly.
“I heard
that”
is what
you
want
your
Sentinel radar
system to say if
enemy aircraft
or missiles are
flying toward
you.
Here are a
few ways to
keep your
Sentinel’s
hearing
sharp…
I Heard That!
Clean
inside
the
Sentinel…
Check the
generator
voltage and
frequency
after
the Sentinel
warms up.
Clean those
filters…
Make
sure all
power is
off
before
cleaning.
735 44-45.indd
1-2
12/31/13
11:15 AM
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