Elitech FreezePoint 6000 Series, User Manual

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109
Appendix E: Operational Use
Lower cooling system
Temp./humidity
range
Effect on
measurement
system
Effect on
measurement/
sample
Remedy System operation
10–19°C/10–44%
or artificially
heated/ climate
controlled rooms
none
20–24°C/45–55% none
25–30°C/80% Excess collection
of condensate from
the environment,
from the sample
or due to ice or
water droplets
dropping down
from the upper
cooling system
Sample not
centered in lower
cooling system,
which can lead
to erroneous or
non-reproducible
measuring results.
Extended cooling
procedure delays
measuring
procedure.
Regularly remove
condensate using
blow-out device
or cotton swab.
No effect
Upper cooling system
Temp./humidity
range
Effect on
measurement
system
Effect on
measurement/
sample
Remedy System operation
10–19°C/10–44%
or artificially
heated/ climate
controlled rooms
No/insufficient
formation of
ice crystals
Measurement
aborts with
message “No
crystallization”.
Unable to
perform serial
measurements
due to insufficient
reformation of ice
crystals between
measurements.
Open cover of
upper cooling
system (elevator
cover) until you
can see ice
crystals forming.
Breathe on it to
add moisture as
needed. Repeat
procedure at
regular intervals.
Shut off once
every 24h
20–24°C/45–55% none Shut off once
every 24h
25–30°C/80% Excess formation
of ice crystals,
possible ice
buildup.
Measurement
aborts with
message “No
crystallization”.
Stuck ice can block
initiation needle.
Fluctuating or
non-reproducible
measuring results,
indicating excess
ice crystals in
the sample.
Seal opening on
upper cooling
system using
tape strip.
Regularly remove
ice crystals and
water droplets
using blow-
out device.
Shut off every 4-6h