Thermo Scientific Dionex UltiMate 3000 Series Operating Instructions Manual page 108

UltiMate 3000 Series:
Fluorescence Detectors FLD-3100 and FLD-3400RS
Message
PMT sensitivity restored
for <CHANNEL> - new
sensitivity is x.
Scan command with equal
start and end position.
Service interval expired.
Service interval warning -
% days remaining.
Signal overflow in
channel xxx.
System fan operation
failure.
System overtemperature
detected.
Page 100
Remedial Action
The Sensitivity was restored to the initial value (= x) after automatic
adjustment.
Enter a different start and end time for the wavelength scan range.
The service interval has expired. Have authorized service personnel
perform system maintenance.
The service interval will expire after the number of days indicated in the
message. Have authorized service personnel perform system
maintenance.
The reference signal is too low (high absorption, high PMT signal).
Check if the flow cell is contaminated. Consider cleaning or replacing the
flow cell. Check if the eluent concentration is too high. The lamp may be
too old and may have to be replaced.
Turn the detector off and on again by pressing the power switch on the
rear of the detector.
Verify that the ventilation slots on the side panels are not obstructed, and
that there is sufficient clearance behind and to the sides of the detector for
ventilation. Reduce the room temperature, if necessary.
Operating Instructions