9 | Cleaning and servicing
Büchi Labortechnik AG
86/100
Operation Manual Lyovapor™ L-200/L-200 Pro
u
On the
[Ice Condenser]
line, enter a required setting for the vacuum.
u
On the
[Shelf temperature]
line enter the required shelf temperature.
u
On the
[Test scope]
line select the component to be tested.
u
On the
[Drying shelf heating]
line switch the drying shelf heating on or off.
u
On the
[Volume]
line enter the actual volume of the components to be tested.
The volume of the system is calculated from the volume of the ice condenser and
the top-mount drying rack.
13.64L
u
Tap the function
[Start]
on the function bar.
ð
The leak test starts.
ð
The status bar shows the status Leak Test.
ð
When the leak test is completed, the
[Leak test]
tab indicates whether the leak
test was successful.
ð
The leak test is passed if the measured leakage rate is less than the pre-set rate
of 10.10 mbar*L/h.
NOTE
To test the leak-tightness of the manifold drying rack, carry out another leak test
with the manifold drying rack installed.
Troubleshooting after failed leak test
Possible cause
Action
Top-mount drying rack not correctly fit-
ted
Fit the top-mount drying rack correctly.
O-rings dirty
Wipe down the O-ring with a damp cloth.
O-rings damaged
Check O-rings and replace if necessary.
Groove of O-rings dirty
Wipe groove of O-rings with a damp
cloth.
KF clamps not closed
Close the KF clamps.
KF seals dirty
Wipe down the KF seals with a damp
cloth.
KF seals damaged
Inspect KF seals and replace as necessary.
Pump oil dirty
Service according to manufacturer's in-
structions.
