OM0240
|
Rev 6 December
/2019
Page 9 of 34
NuAire, Inc.
|
2100 Fernbrook Lane
|
Plymouth, MN 55447
|
U.S.A
|
ph: 763.553.1270
|
fx: 763.553.0459
|
tf: 800.328.3352
2.0 Troubleshooting
2.1 Troubleshooting
Problem
Cause
Solution
No display: the screen
remains black.
No voltage
Operate the switch under the Control Center.
Connect the mains power cable.
Check the electrical supply of the laboratory and restore it.
The lid does not close:
the mechanism does not
start.
The lid has been opened with
the manual opening key
Press the control button to open the lid:
The mechanism starts.
The lid can then be closed.
2.2
Error Messages
Error / Message No. Cause
Solution
01
LOCK FAIL
The lid is open at startup
Press Start / Stop: The message disappears.
Close the lid.
Wait for the complete closure of the lid before starting a cycle.
The locked position detector is
faulty.
Check that the micro contact 2 blade is present and not
folded.
Check that this micro contact 2 is wired correctly.
Check the operation of this micro contact, and change it if
necessary.
02
IMBALANCE
The rotor is non-symmetrically
loaded.
Wait until the end of automatic shutdown.
Open the lid by pressing the button.
Press Start/Stop: The message disappears.
Balance the rotor loads
Restart the spin cycle
The centrifuge is installed on a
wrong type of media.
Place the centrifuge on a compliant media.
Despite a weight gap < 15 gr,
the detection threshold is set
incorrectly.
Carry out a calibration of the imbalance sensitivity threshold.
03
BOWL
OVERTEMPERATURE
The temperature in the bowl
has exceeded 43°C, the
temperature of the room being
too high.
Wait until the end of the automatic shutdown of the rotor.
Activate the air conditioning system for an ambient
temperature under the conditions described in the user’s
manual.
The programmed temperature
setpoint is inappropriate
Change speed / temperature pair of the program, which is not
compatible with normal use.
The initial loading temperature
is too high.
Place the samples before centrifugation in an environment
between 4 and 37°C, for 1h.
The chiller no longer works.
Check the operation of the chiller with the menu “Auto-
Diagnostic “ (Startup and performance)
The temperature probe is
defective
In the probe calibration menu, the value displayed is different
from the value measured by the probe, with a gap > 2°C.
The difference between the air
temperature and the over
temperature alarm set point is
greater than the set value.
Check the value of the temperature alarm threshold.
Change program settings: speed and/or temperature.
04
MOTOR
OVERTEMPERATURE
The motor temperature is too
high.
A stop in “freewheel” mode occurs.
Wait 30 minutes (software reset) before opening the lid.
Activate the air conditioning system of the room to obtain a
lower ambient temperature.
The frequency of use of the
centrifuge is too intensive
(ventilated model)
Spacing the periods of use.
The motor is damaged
Change the motor.
Motor temperature sensor
connection malfunction
Change the motor.
