10 | Help with faults
Büchi Labortechnik AG
90/100
Operation Manual Lyovapor™ L-200/L-200 Pro
Precondition:
R
The instrument has been prepared.
u
Remove regulating or aeration valve.
u
Seal the opening with KF16 cover.
u
Fit a top-mount drying rack. See Chapter 8 "Operating top-mount drying racks",
page 69.
u
Navigate to the
[Start]
menu via the navigation path.
u
Tap the function
[Manual]
on the function bar.
u
Enter the specified settings for the vacuum.
u
Tap the function
[Start]
on the function bar.
ð
The background color of the
Start
menu changes from white to black.
ð
The status bar shows a clock counting up and the status Manual Drying.
ð
The system evacuates to the set pressure.
ð
If the specified setting is not reached, the valve is leaking.
u
Carry out the instructions for action on the other valve.
10.5
Error messages
Error message
Possible cause
Solution
5014
A power failure for 60 min.
u
Confirm to recover the
instrument and continue the
process with risk of sample
melting.
u
Stop the process in standby,
release pressure manually by
activating the aeration valve in
service menu.
5042
Recovery of current drying
process.
Recovery of the latest process
parameters (p, T) will be started
automatically.
u
Check samples after recovery.
u
Consider to use an UPS to
keep power fail time short.
5040
Only Pro instrument Primary
drying: the actual sample
temperature exceeded the
collapse temperature and
safety temperature.
u
Choose lower shelf set
temperature.
Secondary drying: the actual
sample temperature is to
close to the set shelf tem-
perature
