PS Magazine - TB 43-PS-623
PS, The Preventative Maintenance Monthly
ISSUE 623
OCTOBER 2004
PS 623
OCT 04
43
F18H-MPI, AC Unit…
T
here are times, when operating the 18,000 BTU horizontal air conditioner
that sits on top of your commo shelter, that you need access to the circuit breaker or
pressure switch.
So you unscrew the four screws that hold
the circuit breaker and pressure switch
cover in place and remove the cover. You
do what needs to be done and then you take
a shortcut! You decide to leave the cover
off. If the cover is off, you’ll have easier
access next time, you reason. Besides you
think, the switches are protected by an
internal plastic cover. There is no need for
the outer cover at all, you guess. But guess
again, ‘cause this time you guessed wrong!
That outer cover is a vital seal that keeps
moisture, dirt, sand and other blowing
debris from inside your AC unit.
So don’t take the shortcut! In the long
run, it’s a bad idea.
If your AC unit no longer has the cover,
order a new one with NSN 5925-01-406-
3458. Once you do, you’ll find another rea-
son to keep the old cover screwed down to
your AC unit—a $300 reason!
PS 623
OCT 04
42
ESD…
When you’re done with the breaker…
…put cover back on!
I know
this
great
shortcut!
C’mon!
No.
.. I think
it’d be best if
we follow the
directions.
static
can’t
get you when
you’re wrapped
in
aluminum
foil.
don’t be
afraid,
circuit
card…
Dear Editor,
When packaging a static sensitive component, many people make
the mistake of thinking that using an anti-static bag will protect the
component. This is not the case.
An antistatic bag will not generate static, but does not protect
from static. It is easy to destroy the component while it is in a sealed
antistatic bag. Just walk across a carpet on a dry day and touch the
top of the bag while it is sitting on a metal work bench.
Zap!
The
right way
to protect a static sensitive component is to wrap
it in aluminum foil before you put it in an antistatic bag.
Brooke Clarke
San Diego, CA
(Editor’s note:
When it comes to all things
electrical, Mr. Clarke, knows his stuff. Thanks
for the reminder about the bags, Brooke.)
623.42-43(C)
8/27/04
3:34 PM
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