Faulty UV Noise Test
ActionCause
Flush or clean the UV cell, see Section 7.5.1 Clean the UV flow cell,
on page 273.
Air or dirt in the UV flow cell
Check the buffers.Impure buffers
Faulty Pressure Check Test
ActionCause
Check the tubing.Folded, twisted or blocked
tubing
Replace the inline filter, see Section 7.3.2 Replace the inline filter, on
page 266.
The inline filter is dirty
Calibrate the pressure monitor, see Section 7.7.2 Calibrate the pres-
sure monitors, on page 305.
The System pressure monitor
is not calibrated
ÄKTA pure User Manual 29119969 AB 247
6 Performance tests
6.9 System Test UV U9-L (fixed)