Sorvall RT/T6000D - Page 206

RT6000B
and
T6000B
Centrifuges
SORVALL®
Centrifuges
Serial Numbers
Below
9101800
21.
If
the rotor
speed
exceeds
1500
rpm,
stop
the
run
in
progress by
turning
the
speed
control
knob to
off.
22. Readjust
R3
for the lowest
voltage
possible between +0.5
Vdc
and
+4.0
Vdc
at
I.C.
U4
pin
4
where
the
"fail"
tube and the
"reference"
tube
continues to
illuminate the
FAULT
LED.
Note the
final
threshold value
on
the
field
service
report.
23.
Replace
the
"fail"
tube
with
the
"pass"
tube.
24.
Set the
speed
control
knob
to
3200
rpm
setting.
25.
Set the
timer control
knob to the
"HOLD"
position
to start
the
centrifuge.
The
rotor
should
begin accelerating towards
3200
rpm.
NOTE
The
FAULT LED
indicator
on
the front
console
should
not
illuminate
as
the
rotor accelertates
between
500
rpm
and
1000
rpm.
26.
If
the
rotor
speed
exceeds
1500
rpm,
stop
the
run in
progress by
turning
the
speed
control
knob to
off.
27.
Recheck
the imbalance and
ensure
that
the centrifuge
performs correctly
for
both
"pass"
and
"fail"
conditions.
28.
Exchange
both
bucket/carrier/tube
assemblies
with
each other and recheck
again
for
both
"pass"
and
"fail"
conditions.
8-36
Rev.
7/93