GE akta start Maintenance Manual page 129

6.1 UV
Warning messages
Warning
code
111
112
113
ÄKTA start Maintenance Manual 29-0603-08 AC
Descrip- Possible cause
tion
UV intensi- In the Settings and ser-
ty low vice:UV screen:
When trying to calibrate;
if the detector voltage is
less than 2500 mV, even
for a max UV light
strength of 1024.
UV intensi- In the Settings and ser-
ty high vice:UV screen:
When trying to save the
UV light strength after
calibration, if the signal is
greater than 4000 mV.
UV reach- In the Settings and ser-
ing end of vice:UV screen:
lifetime
When trying to save the
UV light strength after
calibration, if the UV light
strength is in the range of
1016 to 1020.
6 Troubleshooting
6.1 UV
Action
Flush the UV flow cell
•
and mount it in a se-
cure way
Or,
Replace the UV flow
•
cell if needed, and try
to calibrate again.
For instructions, see:
Section 7.4 UV flow cell, on
page 161
Section 5.4.1 UV LED cali-
bration, on page 64
Set a lower UV light
•
strength (max 500
counts).
Tap Calibrate to get a
•
signal at about 2500
mV.
Order a new UV Moni-
•
tor.
Perform UV LED cali-
•
bration.
For instructions, see:
Section 5.4.1 UV LED cali-
bration, on page 64
Section 5.4.3 Flow cell path
length, on page 69
129