BÜCHI Labortechnik AG
Help with faults | 8
Operation Manual Pure Chromatography Instrument C-805
57/70
Malfunction
Possible cause
Solution
Fraction collector
(FC) arm does not
move
Fraction collector arm did not
home properly
u
Reset the Fraction collec-
tor arm.
Fraction collector arm motor is
slipping
u
Tighten the motor coupler.
Fraction collector arm is ob-
structed
u
Check for cable or burr in
the fraction collector arm
path and remove any ob-
struction.
Tray not detected
RFID tag is bad
u
Put another tray into the
same position to see if it is
recognized to confirm the
cause.
u
Replace RFID tag.
8.5
Faults, possible causes and solutions (detection)
Malfunction
Possible cause
Solution
No UV signal
UV light burned out
u
Replace the UV light.
Low UV signal
Dirty flow cell
u
Clean the flow cell.
8.6
Error messages
Error message
Possible cause
Solution
Instrument Alarm:
Solvent pump:
Communication to
the pump cannot
be established.
Serial communication dis-
turbed
u
Restart the instrument.
Instrument Alarm:
Solvent pump: Mo-
tor overloading.
-
u
Contact BUCHI Customer
Service.
Instrument Alarm:
Solvent pump: Mo-
tor regulation error.
Hardware error solvent pump
u
Contact BUCHI Customer
Service.
Instrument Alarm:
Solvent pump:
Power supply error.
Hardware error solvent pump
u
Contact BUCHI Customer
Service.
Instrument Alarm:
Solvent pump: Sol-
vent pump motor
fan is not working.
Hardware error fan solvent
pump
u
Contact BUCHI Customer
Service.
Instrument Alarm:
UV detector: Com-
munication error
occurred.
Serial communication dis-
turbed
u
Restart the instrument.
