CODE
TEXT MESSAGE
DESCRIPTION
SUGGESTED RESOLUTION
Chapter 6, Troubleshooting
6-23
CENTRIFUGE
COVER
UNLOCKED -
PLEASE LOCK
CENTRIFUGE
COVER
DIVISION BY
ZERO
DRAW CYCLE
TOO LONG -
PRESS RETURN TO
CONTINUE
FLUID HAS BEEN
DETECTED IN THE
CENTRIFUGE
WELL -
DISCONTINUE
PROCEDURE AND
CLEAN THE
CENTRIFUGE
WELL
Centrifuge cover
latch switches
indicate that cover is
open or unlocked
beginning or during
Draw.
Computer executed a
division by zero
command.
Blood pump encoder
signals indicate that
draw volume has
exceeded acceptable
limit (690 ml).
Spill detector signal
indicates that fluid
has been detected in
the centrifuge well.
1. Check that centrifuge cover halves are closed
completely and that bowl header is aligned properly in
centrifuge cover halves. Listen for two distinctive clicks
from microswitches when cover latch knob secures the
cover halves.
2. Close and latch the cover halves and m28 VDC
on P404 pin 2 and +15 VDC on P404 pin 3 of the
centrifuge distribution card. If no signal exists, check
alignment of centrifuge cover latch microswitches and
adjust accordingly.
3. If signal exists, but CPU is not responding, check,
repair, or replace all electrical connections associated
with the centrifuge cover switch signals.
4. Replace processor card. Using Utilities, calibrate all the
components under A/D, centrifuge, safety system, and
configure the language. Reset protocol parameters
(MODIFY key), if parameters were different from
default values.
1. Check +5 volt supply.
2. Replace processor card. Using Utilities, calibrate all the
components under A/D, centrifuge, safety system, and
configure the language. Reset protocol parameters
(MODIFY key), if parameters were different from
default values.
1. This is a common message if the hematocrit of donor’s
blood is below 35, or if the blood pump efficiency is
negatively affected by a flow restriction or some
problem with the pump rotor.
2. Conduct a flow test on the blood pump. Replace blood
pump rotor if efficiency is less than acceptable value.
1. Using Utilities, display the centrifuge screen under
Diagnostics and monitor the spill detector signal labeled
SPILL. “TRUE means fluid is sensed, “FALSE” means
no fluid is sensed. Wipe the spill detector with a dry
cloth while monitoring spill signal.
2. M10 VDC fluid sensor signal at P406 pin 1. If
signal is present and sensor is dry, replace fluid sensor
assembly.
3. If signal is 0 VDC and SPILL = TRUE, replace
processor card. Using Utilities, calibrate all the
components under A/D, centrifuge, safety system, and
configure the language. Reset protocol parameters
(MODIFY key), if parameters were different from
default values.
