8
Chapter 5
Maintenance
This
chapter
covers
cleaning,
inspection,
troubleshooting,
and
specifications
for
the
Bird
BA–300/310
Blower
Assemblies.
Troubleshooting
For
corrections
requiring
repair
or
replacement
of
components
see
the
appropriate
section.
Only
those
functions
within
the
scope
of
normal
maintenance
are
listed.
This
manual
cannot
list
all
malfunctions
that
may
occur,
or
corrective
actions.
If
a
problem
is
not
listed
or
is
not
corrected
by
the
listed
actions,
notify
a
qualified
service
center.
Maintenance
Cleaning
The
intake
grills,
fan,
and
inside
surface
of
the
baffles
should
be
wiped
free
of
dust
and
dirt
when
necessary
with
a
clean
soft
cloth.
Excessive
dust
will
interfere
with
the
efficient
dissipation
of
heat.
If
the
BA–300/310
has
been
standing
without
an
installed
load,
check
for
objects
that
may
have
entered
the
blower
openings.
When
a
load
is
installed
on
the
blower
assembly,
it
will
be
necessary
to
partially
disassemble
the
blower
to
clean
the
load’s
radiator
fins.
Follow
the
instructions
below:
WARNING
Never
attempt
to
connect
or
disconnect
RF
equipment
from
the
transmission
line
while
RF
power
is
being
applied.
Leaking
RF
energy
is
a
potential
health
hazard.
WARNING
Disconnect
the
unit
from
all
power
sources
before
servicing.
The
unit
may
be
energized
from
multiple
sources.
The
potential
for
electric
shock
exists.
Problem
Possible Cause
Possible Correction
No
air
flow
from
blowers;
indicator
light
off
Unplugged
power
cable
Connect
the
power
cable
Fuse
burnout
Replace
fuse
after
checking
and
correcting
the
burnout
cause.
(See
)
No
ac
power
Make
sure
ac
power
is
properly
connected
and
turned
on
No
air
flow
from
blowers;
indicator
light
on
Fan
obstructed
by
bent
grill
Straighten
the
grill
Fan
motors
overheated
Clean
the
grill
and
fan
blades
(See
)
Fan
motors
burnt
out
Replace
the
fan
motors
(See
)
Air
flow
from
blowers;
indicator
light
off
Lamp
burnt
out
Replace
the
lamp
(See