Operating instructions
..
TYPE
1398-A
PULSE
GENERATOR
SECTION
5
SERVICE
AND
MAINTENANCE
5.1
WARRANTY.
Before
returning
an
instrument
to
General
Radio
We
warrant
that
each
new
instrument
sold
by
us
is
free
from
defects
in
material
and
workmanship
and
that,
properly
used,
it
will
perform
in
full
accordance
with
applicable
specifications
for a
period
of
two
years
after
original
shipment.
Any
instrument
or
component
that
is
found
within
the
two-year
period
not
to
meet
these
standards
after
examination
by
our
factory,
sales
engineering
office,
or
authorized
repair
agency
person-
nel
will
be
repaired
or,
at
our
option,
replaced
without
charge,
except
for
tube
s or
batterie
s
that
have
given
normal
service.
5.2 SERVICE.
The
two-year
warranty
stated
above
attests
the
quality
of
materials
and
workman
s
hip
in
our
products
.
When
difficulties
do
occur,
our
service
engineers
will
assist
in
any
way
possible.
If
the
difficulty
cannot
be
eliminated
by
use
of
the
following
service
instructions,
please
write
or
phone
our
gervice
Department
(see
rear
cover),
giving
full
information
of
the
trouble
and
of
steps
taken
to
remedy
it.
Be
sure
to
mention
the
serial
and
type
number
of
the
instrument.
20
for
service
,
please
write
to
our
Service
Department
or
nearest
sales
engineering
office,
requesting
a
Returned
Material
Tag.
Use
of
this
tag
will
ensure
proper
han-
dling
and
identification.
For
instruments
not
covered
by
the
warranty,
a
purchase
order
should
be
forwarded
to
avoid
unnecessary
delay
.
5.3
REMOVAL
OF
COVER.
To
open
the
instrument
for
access
to
components,
loosen
the
large
fluted
screw
at
.
the
rear
of
the
right-
hand
side
of
the
cabinet.
Then
grasp
the
panel
by
the
top
and
bottom
edges
with
one
hand,
and
with
the
other
hand
slide
the
aluminum
dust
cover
away
from
the
panel
and
off
the
rear.
All
components
are
easily
accessible.
See
Figures
5-3, 5-4,
and
5-6 for
location
of
components.
5.4 ROUTINE MAINTENANCE.
5.4.1
LUBRICATING
THE FAN MOTOR.
For
long
,
trouble-free
operation,
lubricate
the
fan
motor
at
least
once
a y
ear
with
SAE
20 or
30
premium-
qualit
y
oil.
There
are
two
lubricating
holes,
one
in