Avantik Cryostat QS11 / QS11UV
Avantik
36 Commerce St.
Springfield NJ 07081 / USA
387 779 - English
55
4-6-1 POSSIBLE SOURCES OF ERRORS – CAUSE AND REMOVAL
Problem
Cause Removal
Cryostat temperature cannot be
achieved
Ambient temperature too high
Cryostat is influenced by near,
heat-generating instruments
Draught into the cryostat
Soiled condenser
Lower ambient temperature by
fresh air, climate. Please note
the specified temperature of
+20°C!
Change site of installation
Change site of installation
Open the service door on the left
side, clean the condenser
gnilooc evitcefeD Call a service technician
Frost built-up on chamber wall
and on microtome
Draught (open doors, windows) Change site of installation; close
windows, doors
Retarded freezing-on of the
specimen
Surface of the fast freezing
station is soiled
Lower part of the chuck is soiled
or damaged
Remove debris
Remove debris,
remove damage
Chatter while cutting Unfavorable clearance angle
Insufficient knife sharpness
Knife not adequately clamped
Chuck inadequately clamped
Specimen inadequately frozen
on onto the chuck
Specimen grossed too thick – it
loosens from the chuck
Specimen very hard and
inhomogeneous
Readjust clearance angle
Move the knife in the knife
carrier
Check knife clamping
Check clamping
Again freeze on the specimen
Again freeze on the specimen
Select new section thickness,
reduce the specimen
Sticky sections Specimen not cold enough
Knife and/or anti-roll plate are
not yet cold enough – section
melts
Select a deeper temperature
Wait until the knife and/or the
anti-roll plate have reached the
corresponding chamber
temperature
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