Hettich AG, Seestrasse 204a, 8806 Baech, Switzerland
Operator_Manual_Rotolavit II_und_Rotolavit II-S_en_rev2.5
Seite 48
13 Faults and errors
13.1 Operator faults
Fault
Cause
Remedy
Incomplete wash
cycle
A 24-place rotor is being used,
even though a 12-place rotor
has been set as the rotor type.
The filling volume is set too low.
The injection nozzles are
blocked.
Check the rotor parameter in the
system settings.
Check the volume (ml) and speed
from the FILL-process in the used
program.
Clean the injection nozzles.
Pellet does not form
on the base of used
tube
The revolutions per minute
during the centrifugation run for
the agglutination test are too
low.
The tube holders are left
hanging in the decantation
position
Check the spin process from the
used program.
Check the rotor functions.
Wrong tube type
Check if the used tube is the
same as during the program
validation
No pellet/pellet too
small
A 12-place rotor is being used,
even though a 24-place rotor
has been set as the rotor type.
The filling volume is set too high.
Wrong tube type
Check the rotor parameter in
the program.
Check the saline (ml) parameter
in the program.
Check if the used tube is the
same as during the program-
validation.
The liquid is not
decanted.
The rotor mechanism is
defective.
The revolutions per minute
during the DECANT-process
are too low.
Check the rotor functions
Check the DECANT-process
from the used program.
If you detect a variable fill volume over a tolerance of ±15% of the setting, then you must check the fill
port from the rotor and if necessary, you must clean or exchange it.
