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Maintenance
&
Repair
Sorvall®
Centrifuges10.
Replace
all
worn
parts
as
required,
then
prepare
the
centrifuge
for
operation
underfull
rated
power.b.
Checks
With
Power
ON1.
Set
main
power
switch
to
ON.2.
Set
tinier
for
duration
of
test.
Check
the
speed
control
with
a
portable
tachometer,Jaquet
indicator
or
equivalent
centrifuge
(paragraph
7-
6,
a).3.
Check
refrigerant
pressure
on
the
HIGH
pressure
side
(paragraph
6-16).4.
Check
refrigerant
pressure
on
the
LOW
pressure
side
(paragraph
6-16).5.
Check
the
overspeed
control
at
22
000
rpm
±
200
rpm
(paragraph
7-2,
h).6.
Check
the
temperature
control
for
proper
calibration
(paragraph
7-6.
b).7.
Using
clamp-on
ammeter.
Triplet
model
No.
10
or
equivalent,
check
the
followingcurrents:(a)
Check
the
compressor
current
draw
for
12-18
A.(b)
Check
the
centrifuge
drive
motor
current
draw
for
12-18
A.(c)
After
the
START
capacitor
Is
out
of
the
circuit,
check
centrifuge
total
currentdraw
by
clamping
the
ammeter
on
any
of
the
main
input
power
lines
exceptchassis
ground
(paragraph
2-4)
(30
A
maximum).8.
Check
the
drive
motor
braking
time
when
the
BRAKE
switch
Is
pressed.9.
Check
the
drive
motor
braking
time
when
the
brake
circuit
is
not
activated.10.
Check
the
timer
for
proper
STOP
time
when
the
indicator
shows
STOP.6-3.
Cabinet
Panel
RemovalFor
access
to
internal
components
(see
warning
in
front
of
this
manual),
the
front
panelmust
be
removed
before
the
side
panels.
Front
panel
removal
on
the
RC-5
opens
thepower
supply
safety
interlock
S305.
The
rear
panel
can
be
removed
at
any
time
in
anysequence.
Remove
front,
side
and
back
panels
as
follows:1.
Loosen,
then
disengage,
the
two
captive
screws
in
the
upper
recesses
of
each
panel,beneath
the
top
deck
cover.2.
Carefully
remove
the
top
of
the
panel
away
from
the
cabinet.3.
Using
the
toe
of
your
shoe,
lift
the
panel
up
and
slip
the
lower
edge
of
the
panel
offthe
locating
pins.6-2
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