Field Service Procedure – Replacement Pol Pot Kit, USAT
Page
6
of
7
Document No
135929 Rev A
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consent of Sea Tel, Inc.
*Note:
A
level
bubble
or
spirit
level
can
be
placed
on
the
LNB
to
verify
the
accuracy
of
its
alignment.
(Fig:
1.1)
7.
If
the
LNB
isn’t
horizontal
at
the
central
position
of
the
pots
range
(120
counts)
the
LNB
will
then
need
to
be
physically
driven
until
it
is
aligned
horizontally
and
then
adjustments
will
need
to
be
made
to
the
position
of
the
pol
pot
to
calibrate
it
for
a
value
of
120
counts.
To
drive
the
LNB
to
horizontal
enter
drive
commands
into
the
remote
command
screen
of
the
DAC
to
rotate
the
feed
assembly
by
issuing
drive
to
the
pol
motor:
For
example
if
the
LNB
is
over
to
the
left
of
center
and
needs
to
be
driven
clockwise
to
bring
it
to
horizontal
increase
the
pol
value.
Enter
“g0130”,
“g0135”,
g0137”
and
so
on
into
the
remote
command
screen
until
the
LNB
is
aligned
horizontally.
Should
the
LNB
be
over
to
the
right
of
center
and
needs
to
be
driven
counter
‐
clockwise
to
bring
it
to
horizontal
decrease
the
pol
value.
Enter
“g0110”,
“g0105”,
g0103”
and
so
on
into
the
remote
command
screen
until
the
LNB
is
aligned
horizontally.
8.
Once
the
LNB
has
been
aligned
horizontally
(as
per
Fig
1.1)
locate
the
pol
pot
on
the
feed
assembly
and
loosen
the
retaining
screw
using
a
9/64”
Allen
wrench
(as
shown
below
in
Fig.
1.2).
Slide
the
pol
pots
bracket
towards
the
feed
assembly
to
slacken
the
belt
tension
and
allow
the
pol
pot’s
pulley
to
be
rotated
(as
shown
below
in
Fig.
1.3).
Adjust
the
pol
pot
as
necessary:
If
the
LNB
is
to
the
left
of
center
(needs
to
be
rotated
clockwise
to
bring
it
to
level)
rotate
the
pulley
counter
‐
clockwise.
If
the
LNB
is
to
the
right
of
center
(needs
to
be
rotated
counter
‐
clockwise
to
bring
it
to
level)
rotate
the
pulley
clockwise.
(Fig.
1.2)
(Fig.
1.3)
9.
Resend
the
remote
command
“g0120”
to
re
‐
center
the
feed,
you
may
find
it
easier
to
drive
the
feed
away
from
its
central
position
and
then
back
to
center
(I.e.
send
the
command
“g0130”
followed
by
“g0120”).
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