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~~~~~~~
Centrifuges
4.
Place
the
system
in
the
RUN
mode.
5.
Adjust
potentiometer
R99
for
a
tachometer
indication
of
1000
~~~~
6.
Set
the
SPEED
control
to
20
000
rpm.
7.
Adjust
potentiometer
R97
for
a
tachometer
indication
of
20
000
rpm.
If
full
counterclockwise
adjustment
does
not
result
in
20
000
rpm
indication,
adjust
torque
trimmer
potentiometer
R204
until
20
000
rpm
is indicated.
~~
Speed
Indicator
Ml
01
Tracking
Adjustment
Potentiometer
(R109)
This
procedure
adjusts
the
full
range
of
speed
indication.
1.
Install
an
~~~~~
rotor
and
close
the
chamber
door.
2.
Place
the
system
in
the
RUN
mode.
Connect
the
tachometer
to
the
tachometer
jacks
on
the
front
panel.
3.
Operate
alternately
at
1000
rpm
and
20
000
rpm,
then
adjust
potentiometer
R109
until
the
error
at
both
speeds
is minimized.
~~
~~~~~~~~~
Detector
Potentiometer
(R100)
This
procedure
adjusts
the
~~~~~~~~~
detection
circuitry
for
RUN
mode
disable
at
22
000
rpm
± 200
rpm.
1.
Install
an
SS-34
rotor
and
close
the
chamber
door.
2.
Adjust
potentiometer
R100
to
disable
the
RUN
mode
when
the
motor
speed
is at
22
000
rpm
± 200
rpm.
~~
Temperature
Indicator
Ml
02
Deflection
Adjust
-20°
~
Potent~ometer
(R106)
and
+40°
~
Potent~ometer
(R105)
This
procedure
adjusts
M102
for
zero
and
full
scale
indications.
1~
Set
the
circuit
breaker
to
OFF.
2.
Place
the
centrifuge
system
in
the
HOLD
mode.
3.
Adjust
potentiometer
R105
~~~~~
counterclockwise.
4.
Referring
to
figure
6-2,
place
the
106.15
ohm
precision
resistor
in
the
circuit.
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