Technical information

Centrifuge Standard Operating Procedure 16
7. TROUBLESHOOTING
7.1 Equipment Malfunction
Users are not to make repairs. The centrifuge shall be maintained and
repaired by qualified persons only.
Table 7-1 lists some of the common minor problems that may occur and
recommends the appropriate action for the user to take.
Table 7-1: Centrifuge problems and causes.
Diagnostic
Number/Message
Problem
Result
Recommended Action
P1 – Power
Failure
Momentary power
failure; rotor does
not come to a
complete stop
Run continues
when power
resumes
Press CE to clear message.
P2 – Power
Failure
Power failure; rotor
speed drops below
500 rpm
Run restarts
automatically
when power
resumes
C1 – Rotor temp
exceeds 4C
above set
Rotor temperature
exceeds
temperature setting
by more than 4
o
C
but less then 8
o
C
Run continues
H4, H6, and H9
–
Speed Error
Accel or decel
speed problem
Run continues
L1, L2, L5, L6,
L11, L12 –
Reclose Door
Latches are not
operating properly
Error message
appears; run
shuts down
with
maximum
break
Press on the door and
press
DOOR. If you close the door
repeatedly and the problem
continues, gently clean the
latch area with a lintless
swab. Be careful not to
damage sensitive electronics
in the area.
WARNING: Do not put your
fingers into the latch
openings.
Press CE to clear message.