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Calibration
Procedures
Sorvall®
Centrifugeso.
Timer
Control
Knob
and
Switch
Adjust
(S106
and
S107)This
procedure
adjusts
the
mechanical
adjustment
of
control
knob
and
switches.1.
Set
the
main
circuit
breaker
to
ON.2.
Make
certain
that
the
rotor
is
secured
and
the
chamber
door
latched.3.
Set
the
SPEED
control
to
1000
rpm.4.
Press
and
hold
the
ON
switch
on
the
RC-5
or
START
switch
on
the
RC-5B.
thenrotate
the
timer
control
shaft
counterclockwise
until
the
RUN
mode
stays
ON,
thenrelease
the
ON
switch
on
the
RC-5
or
START
switch
on
the
RC-5B.5.
Rotate
the
timer
control
shaft
counterclockwise
until
the
RUN
to
HOLD
mode
tran¬sition
occurs.6.
Align
and
secure
the
timer
control
knob
STOP
position
with
the
console
verticalmark.7-7.
RC-5B
Automatic
Rate
Controller
CalibrationThis
test
is
performed
with
an
SS-34
rotor
installed
in
centrifuge.
The
test
Instrumentrequired
is
a
portable
digital
tachometer
with
test
leads,
or
equivalent.Perform
test
as
follows:1.
Check
that
power
outlet
supplies
proper
power
rating
as
specified
on
name
plate.2.
Check
that
main
power
cord
is
plugged
into
power
outlet.3.
Set
main
circuit
breaker
to
OFF.4.
Facing
the
control
panel,
remove
the
front
and
right
side
panels
of
the
centrifugeand
rear
cover
of
control
panel.5.
In
base,
unclip
the
motor
silencer
enclosure
and
lower
it
enough
to
observe
brushlift
mechanism
operation.6.
Check
condition
of
brushes
for
excessive
wear.
Replace
If
necessary.7.
Set
main
circuit
breaker
to
ON.8.
Press
SLOW
switch.9.
Observe
brush
mechanism
for
proper
operation.10.
Press
SLOW
switch
for
OFF
position,
observing
the
following:
relay
K407
shoulddisengage,
and
brush
lift
return
to
normal.7-10
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