PS Magazine - TB 43-PS-434
PS, The Preventative Maintenance Monthly
ISSUE 434
JANUARY 1989
T
e
trailer cover of iF you're
going through rough or hilly country.
Otherwise, when you go down and up
a dip the antenna rips a hoLe in the
cover±
Cable Countdown
Be²re you move out, aLways puLl
out any slack in the cabLes tHat run
down the side oF the van and tie them
back³
The I´´ cable is especially deµnse-
Less against tree Limbs and other things
that can rip it apart.
WrAp
IFF
cABLE
AROUND BiggEr
cABLEs TO pROTEcT iT
16
Pro¶ect the
if
cable by disconnect·
ing it and wrapping it arounD
t¸e
heavier cables untiL it's tight. Then re-
connect the cabLe.
¹uring set up, connect the
El
Wº
cabLe to the mas¶ ro¶ary coupLer »¼st.
Without the other two cabLes in the
way, it's easier to mAeuver the heavier
E½W½. Give yourseLF more room by
getting as much sLack on the E¾ Wº as
possibLe beF¿re you connect it.
Tig¸t is the onLy way to connect aLL
three cabLes to the mas¶ rotary couÀLer.
IF ¶he cabLe connec¶ions are loose, arc·
ing damages jacks and connectors and
causes bandpass ÁL¶ers, circuLators and
the ¶raveLing wave tube to Âil. Ãoose
connections aLso Let in water tha¶ dam·
ages that rotary coupler.
TuR only the cabLe head's screw
rÄng to tighten cabLes. ÅF you don't, Ät's
easy to rip the cable's wiring, espe-
ciaLly on smalLer cables like the W73.
When you disconnect cables,
im-
mediateLy pu¶ on the jacks' protective
covers. They shu¶ out moisture and
dus¶ that cause electrÄcal damage and
poor connec¶ions.
JAN 89
MaSt M±StS
Ænce you start to raise the mast,
don't s¶op untÄL the mast is ÇLly up.
You
'±±
hear a Loud click when ¶he
mast's top section Locks in place. ÈF
you stop and start, the mast loses pres-
sure and you strain the drive beLts that
operate the Mast±
²rEcT
mAsT ALL
ThE ³Ay
³iThOUT
sTOppi´g
-
f
f
±=
Ée²re you lower the mast, make
sure the W20 cable is cleaÊ oF the stËw
bracket. The mast can catch the cable
and pinch or cut it. The mast has nÌ
power UntiL the W20's replaced±
µn and
ÆÍ
CareFuLLy ²llow the energizing proÎ
cedure Än TabLe 2Ï1 in TÐ
²-³430-5´´µ
10 and the deÑenergizing procedure in
Para 2Ò20. Taking even one shortcut
during startup and shutdown Leads to
damaged components like the
K¶
reLay
in t¸e power distribution unit.
ÅF yoÓ shu¶ down the generator set
beF¿re
yoÓ
cut alL
systems
power,
you'll get a voLtage spike that will zap
the
K¶
relay.
JAN 89
17
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