8 | Help with faults
BÜCHI Labortechnik AG
58/70
Operation Manual Pure Chromatography Instrument C-805
Error message
Possible cause
Solution
Instrument Alarm:
UV detector: Bad
block of High Volt-
age (HV) generator
for lamp or discon-
nected lamp or bad
lamp.
Lamp defect
u
Check the lamp and restart
instrument.
u
Contact BUCHI Customer
Service.
No lamp
Hardware error UV detector
Instrument Alarm:
UV detector: Bad
power supply of
lamp heater volt-
age.
Hardware error UV detector
u
Contact BUCHI Customer
Service.
Instrument Alarm:
UV detector: Bad
power supply of
lamp anodic volt-
age.
Hardware error UV detector
u
Contact BUCHI Customer
Service.
Instrument Alarm:
UV detector: Bad
power supply of de-
tector analog or
digital voltage.
Hardware error UV detector
u
Contact BUCHI Customer
Service.
Instrument Alarm:
UV detector: 4th
cycle of lamp igni-
tion fails.
Lamp defect
u
Check the lamp and restart
instrument.
Instrument Alarm:
UV detector: Lamp
spontaneously
douse during unit
working.
Lamp defect
u
Check the lamp and restart
instrument.
Instrument Alarm:
UV detector: Lamp
ignition fails after
short douse in AU-
TOZERO function
and repeated High
Voltage impulse
and heater cycle
fails too.
Hardware error UV detector.
u
Contact BUCHI Customer
Service.
Instrument Alarm:
UV detector: Bad
identification of light
peak caused by low
light intensity.
Lamp defective/ Flow cell dirty
u
Check the lamp and restart
instrument.
Instrument Alarm:
UV detector: Bad
identification of light
peak caused by un-
workable light in-
tensity.
Lamp defective/ Flow cell dirty
u
Check the lamp and restart
instrument.