BÜCHI Labortechnik AG
Help with faults | 8
Operation Manual Pure Chromatography Instrument C-805
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8
Help with faults
8.1
Faults, possible causes and solutions (general)
Malfunction
Possible cause
Solution
The instrument
does not power up
Power is not being supplied to
the system
u
Verify that the power cord
is plugged in.
u
Make sure that the voltage,
amperage and frequency
meet the instrument speci-
fications.
u
Make sure that both power
switches are switched on.
u
Verify that the fuse wire is
not broken and fuses are
correctly installed in the in-
strument.
System shuts down
automatically
Major fluctuations in line
power are present
u
Connect system to a Unin-
terrupted Power Supply
line.
The touch screen is
not responsive
The touch screen is out of cal-
ibration
u
Recalibrate the touch
screen.
8.2
Faults, possible causes and solutions (cartridge)
Malfunction
Possible cause
Solution
Cartridge is not de-
tected
RFID tag is not facing the
RFID reader
u
Turn cartridge so that RFID
tag faces RFID reader.
RFID tag is bad
u
Use new cartridge.
8.3
Faults, possible causes and solutions (solvent delivery)
Malfunction
Possible cause
Solution
No solvent flow
Empty solvent bottle
u
Refill the solvent bottle.
Pump not primed
u
Prime the pump.
u
Remove the check valve
and clean it by sonicating
the check valve in IPA.
u
If sonication does not work
replace the check valve
with a new check valve.
Air bubbles in solvent line
u
Prime the pump.
Pump seals worn out
u
Replace the pump seals.
Pulsation of pump
Open or close time of the inlet
or outlet valves are not correct
u
Rinse the pump module
with high flowrate with
ethanol or hot distilled wa-
ter.
u
Change check valves.
Residues in solvent
Sealing abrasion outlet valve