16
4. Operating procedures
Operation modes and lists of functions
Defrosting function is built-in in this chamber as special function.
For details, refer to the separate Operation Manual for the Model CR5 Program Controller.
Name
Description
Defrost function
While operating the unit at a lower temperature, cooling capacity of
the evaporator may be degraded and the set temperature may not be
maintained due to too much frost on the evaporator.
The IL unit has an observation window to allow check how much frost
is on the evaporator. The speed in which frost is generated will differ
depending on specific conditions.
(1) Operating temp.:
Operation at a lower temperature is likely to cause frost.
(2) External temp./humidity:
Frost is likely to occur at a higher temperature and humidity.
(3) Inside the bath:
Frost is likely to occur when the humidity inside the bath is high.
(Such as when the specimen used contains much moisture.)
The IL unit allows selecting from the following operation modes to
prevent frosting depending on the use conditions.
This function can be enabled even during fixed temperature operation
by pressing the Defrost key.
Although it depends on use conditions, take care since the
temperature in the bath will rise compared to the set
temperature during defrost operation, which might influence
on specimens. In which case, the displayed temperature
may rise by 10
℃
or more.
(Increased margin of temperature will differ depending on
the set temperature, the specimen or the external
temperature.)
※
Reference data: Temperature increase is within about 4
℃
at the set temperature of 37
℃
and the external
temperature of 20
℃
.