PS Magazine - TB 43-PS-688
PS, The Preventative Maintenance Monthly
ISSUE 688
MARCH 2010
49
PS 688
MAR 10
Battery Bits
Remember new BB-390B/U rechargeable
batteries, NSN 6140-01-490-4317, must
be charged within six months of their
manufacture date, which is shown on the
bottom of the battery. If you wait longer to
charge it, the battery may not work.
But before you charge any battery,
you must Frst completely discharge it.
Otherwise, the gas gauge will give a false
reading. The battery develops a memory,
which prevents the visual indicator from
indicating a full charge. The battery won’t
power the mine detector as long as it
should.
The best way to discharge the battery is with a discharger, NSN 6130-01-490-
4310. The discharger doesn’t come with the mine detector–you must order it
separately. It generally takes an hour to fully discharge a battery.
Assembly
When
you
remove
the
battery box from the storage
case, make sure it clears
the clamp for the search
head
cable.
If
you
bang
the box against the clamp,
you’ll damage the clamp.
Your
support
can
replace
the clamp. If the clamp is
too damaged, the detector
is NMC. Watch out for the
clamp when you’re putting
the battery box back in the
storage case, too.
When you slide the control
grip forward during assembly,
make sure the cable to the
controls is outside the cradle.
If it’s not, the cable will be
pinched, which can tear its
covering. That can lead to
shorts and poor detecting.
Before PMCS
Check the control grip for
missing or loose screws and
the grip indicators and controls
for
damage.
±eel
the
GPR
sensitivity knob on the control
grip for looseness. Over time,
the knob sometimes works loose
and can fall off. Your support
can tighten the knob’s set screw.
Check that the lanyard
screws for the battery box
and its lid are in place and
secure. If screws are missing
or loose, the lanyard can
come off. No lanyard often
means the lid will soon
go missing. Support can
replace screws.
AN/PSS-14 Mine Detector…
Better Detecting with PM
mine detecting
is something
you want to be
very
accurate.
here are a few
ways to keep
your an/pss-14
mine detector
as sensitive as
a bloodhound.
Feel sensitivity knob for looseness
Battery box
lanyard
screws
tight?
Charge battery within
six months of date of
manufacture
Watch out for clamp when you
remove battery box from storage case
Cable needs to be outside
the cradle when you
slide control grip
Battery box
Cable clamp
688.48-49.indd
1-2
2/2/10
4:52:09 PM
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