GE AKTA start Maintenance Manual page 94

4 Troubleshooting
4.1 UV
4.1 UV
Warning messages
Warning code Description
111 UV intensity
low
112 UV intensity
high
113 UV reaching
end of lifetime
114 UV reached
end of lifetime
94
Possible cause
In the Settings and service:UV
screen:
When trying to calibrate; if the
detector output is less than 2700
mV, even for a maximum UV
light strength of 1024.
In the Settings and service:UV
screen:
When trying to save the UV light
strength after calibration, if the
signal is greater than 4000 mV.
In the Settings and service:UV
screen:
When trying to save the UV light
strength after calibration, if the
UV light strength is in the range
1016 to 1020.
In the Settings and service:UV
screen:
When trying to save the UV light
strength after calibration, if the
UV light strength is 1020.
Action
Flush the UV flow cell and
•
mount it securely
Or,
Replace the UV flow cell and
•
re-calibrate.
For instructions, see:
Section 5.4 UV flow cell, on
page 122
Section 3.5.1 UV LED calibration,
on page 39
Set a lower UV light strength
•
(maximum 500).
Tap Calibrate to get a signal
•
of about 2700 mV.
Replace the UV Monitor.
•
Perform UV LED calibration.
•
For instructions, see:
Section 3.5.1 UV LED calibration,
on page 39
Section 3.5.3 Flow cell path
length, on page 44
Replace the UV Monitor.
•
Perform UV LED calibration.
•
For instructions, see:
Section 3.5.1 UV LED calibration,
on page 39
Section 3.5.3 Flow cell path
length, on page 44
ÄKTA start Maintenance Manual 29060308 AD