Gilson PLC 2050, Руководство пользователя

Страница: 74 / 132

74
troubLeShootinG
|
PLC 2050/2250/2500 PurifiCation SyStemS
t
r
OU
B
Le
S
h
O
O
tI
NG
t
a
B
Le
Detection
SymPtom(S) PoSSibLe CauSe(S) remeDy referenCe
UV detector does not
respond to commands.
No communication.
Electronic failure.
Restart the system. If the
problem persists, export
the traces log files from
GGP Software.
Run a basic diagnostic of
the detector.
Create a ‘Service Report’
for the detector.
Refer to the UV-VIS
Detector Service Guide.
Refer to the Gilson Glider
Prep Software (GGP)
User’s Guide .
Noise on UV signals.
Use of non-degassed
solvents.
Unsuitable mixing of
solvents pumped.
Degas solvents pumped.
Increase the backpressure
value after the flow cell.
Use GGP Software to
make a calculated filtering
of the UV signals.
Refer to the Gilson Glider
Prep Software (GGP)
User’s Guide .
Higher noise levels or
decreased sensitivity on
UV signals.
Improper autozero.
Low UV lamp intensity.
Unreliable efficiency of
UV lamp.
Check the UV lamp for
efficiency.
Check for UV noise and
drift.
Check the light intensity
curve.
Refer to the UV-VIS
Detector Service Guide.
No signal during UV
acquisition.
UV detector lamp does
not switch on.
Worn UV deuterium lamp.
Replace the UV deuterium
lamp and perform an
intensity recalibration.
Refer to the UV-VIS
Detector Service Guide.
Low signal during UV
acquisition in visible
range.
Worn UV halogen lamp.
Replace the UV halogen
lamp and perform a scan
intensity.
Refer to the UV-VIS
Detector Service Guide.
Lowered UV light
transmission, persistent
higher noise levels or
decreased sensitivity on
UV signals with efficient
lamp.
Dirty or contaminated UV
flow cell
Check the UV cell for
cleanliness.
Refer to the UV-VIS
Detector Service Guide.
Peaks detected by UV
have a too low intensity
whatever the application.
UV flow cell optical path
length is too small.
Replace the UV cell with
another cell with a higher
path length.
Refer to the UV-VIS
Detector Service Guide.
Peaks detected by
UV have a too high
of an intensity (signal
saturation) whatever the
application.
UV flow cell optical path
length is too large.
Replace the UV cell with
another cell with a lower
path length.
Refer to the UV-VIS
Detector Service Guide.
Continued on Page 75