PS Magazine - TB 43-PS-735
PS, The Preventative Maintenance Monthly
ISSUE 735
FEBRUARY 2014
42
PS 735
FEB 14
Dear Editor,
Working with the Patriot here at Ft Bliss, we’ve come up with a few
suggestions that will help other Patrioteers:
Check CLET Daily During Operations
The AN/MPQ-53 radar’s cooling liquid electron tube (CLET) can run low
on coolant. When that happens, you start getting ECU faults and eventually
the CLET motor can burn out. That shuts down the radar transmitter.
But don’t rely just on the CLET gage. It’s not always reliable. Use the rod
to check for the proper coolant level. Order coolant with NSN 6810-01-
229-9828.
One other CLET tip: The CLET refill pump comes with a nipple.
Don’t
lose that nipple!
You need it for the pump and it’s nearly impossible to
get a replacement.
Clean Circuit Cards in Radar and
Engagement Control Station
Units are usually good about
cleaning inside the radar and the
ECS, but they don’t open the circuit
card drawers and check for dust. If
enough dust collects on the circuit
cards, they overheat and malfunction.
Your intermediate maintenance should
use low pressure air (20 psi or less)
to blow the cards clean. Check the
drawers for dust as part of your
regular cleaning procedure. Tell
maintenance if you find any.
Clean the Radar’s Power Inverters
If dust collects behind
the inverters, air flow
is limited. The inverters
overheat and fail. Your
intermediate maintenance
should remove the inverters
and their components every
two months in the desert
and blow all the racks
clean with low-pressure air.
Quarterly is often enough
elsewhere. Be careful,
though, removing inverter
cables. They’re fragile.
CW2 Michael Smith
SGT Joshua Rogers
SPC Nicholas Griffin
2/43rd ADA
Ft Bliss, TX
Editor’s note:
You are indeed the
voices of experience. Thanks for sharing.
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Patriot Missile System…
Listen
to
voices
of
Experience
Remove inverters
and blow out dirt
Check
circuit
cards
for dust
as part
of PMCS
Thanks for getting rid
of the dirt that was
clogging me up. I feel
so much cooler now…
…and
that’s
cOol!
it’s my
patriot
-ic
duty!
735 42-43.indd
1-2
12/31/13
11:17 AM
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