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CentrifugesDescriptionSection
2DESCRIPTION2-1.
Purpose
of
EquipmentThe
centrifuge
Is
designed
to
separate
substances
of
different
densities,
remove
mois¬ture
or
increase
gravitational
effects
by
centrifugal
force
at
controlled
low
temperatures.2-2.
DescriptionThe
RC-5
and
RC-5B
centrifuge
drive
system
is
equipped
with
a
Universal/Drive
motor,designed
and
manufactured
by
DuPont,
with
a
programmed
automatic
acceleration
andbraking
feature.
The
motor
armature
is
balanced
to
give
quiet
operation
with
minimumvibration
over
a
full
range
of
operating
speeds.
This
feature
extends
the
life
of
the
bear¬ings
and
brushes.This
drive
system
is
fitted
with
a
Gyro-Action
Centering
Drive*
that
is
compatible
witha
wide
variety
of
SORVALL
rotors.The
wall
of
the
evaporator
rotor
chamber
is
made
of
an
envelope-type,
smooth
stainlesssteel.
The
cabinet
has
a
corrosion-resistant
top
and
is
finished
with
a
corrosion-resis¬tant
gray
enamel.
All
cabinet
panels
are
removable
for
access
to
service
the
centrifuge.Fittings
on
the
right
side
of
the
cabinet
provide
external
connections
for
a
continuousflow
system.
The
rubber
plugs
on
the
inside
and
outside
create
a
dead
air
space
thatminimizes
heat
loss
and
condensation
while
sealing
out
dirt
and
foreign
matter
from
theconnecting
tubes.The
refrigeration
system
is
a
low-temperature
condensing
unit
of
the
hermetically-sealed
type.
It
is
designed
to
maintain
the
rotor
chamber
at
the
preset
level
within
±1°Cduring
operation.The
centrifuge
is
equipped
with
a
noise
suppressor
to
reduce
its
noise
level.
This
sup¬pressor
requires
no
special
care
or
maintenance.The
centrifuge
is
operated
by
Instructions
programmed
at
the
control
panel.
It
hassafety
features,
designed
to
protect
the
operator
or
service
personnel,
that
will
overridethe
programmed
instructions
under
special
conditions.Safety
features
include:a.
Door
Interlock:
Prevents
the
centrifuge
door
from
opening
when
the
rotor
begins
toaccelerate.
In
the
event
of
a
power
failure,
the
door
remains
locked
and
can
be
over¬ridden
by
a
special
latch
release
(see
Table
2-2,
item
13).
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