25
SETTING CHAMBER TEMPERATURE AND CO
2
DENSITY
Table below shows the basic procedure for setting the chamber temperature and CO
2
density. The high
limit temperature alarm setting is also shown in the table. Perform key operations in the sequence
indicated in the table. The example in the table is based on the assumption that the desired temperature
is 33
o
C and CO
2
density is 5 %. Adjustment of the high limit regulator should be executed after the
chamber temperature reaches the stable condition.
Note:
• The incubator is set at the factory so that the chamber temperature is 37
o
C and CO
2
density is 0 %.
• When starting the incubator for the first time or after not using it for an extended period of time, allow at
least 8 hours for the chamber temperature, humidity, and CO
2
sensor to become stable after setting the
desired chamber temperature at 0 % CO
2
density. Then change the setting to the desired CO
2
density.
Basic operation sequence (Example: Chamber temperature: 33
o
C, CO
2
density: 5 %)
Description of operation
Key operated
Indication after operation
1 Turn the power switch ON.
----
The current chamber temperature is displayed
in the digital temperature indicator.
2 Press set key.
SET
The left digit blinks.
3
By pressing numerical value shift
key and digit shift key,
set the figure to 33.0.
When pressed,
the changeable digit is shifted.
When pressed,
the figure of settable digit changes.
4 Press enter key.
ENT
Set temperature is memorized.
Left digit in the digital
CO
2
density indicator blinks.
5
By pressing digit shift key
and numerical value shift key,
set the figure to 05.0.
When pressed, the changeable digit is shifted.
When pressed,
the figure of settable digit changes.
6 Press enter key.
ENT
Set CO
2
density is memorized.
7
(Executed after the chamber
temperature reaches the stable
condition)
Adjust high limit regulator so that
the alarm temp. is at least 1
o
C
higher than set temperature.
----
In the digital CO
2
density indicator, HI is displayed.
In the digital temperature indicator, high limit temp.
is displayed.
The high limit temp. can be changed
by turning high limit regulator.
8 Press enter key.
ENT
This is the end of set mode and the indicators
display current temperature and CO
2
density.
Note:
●
In each setting mode, if the change of the setting is not necessary, pressing set key (SET) skips to next
setting mode.
●
When the CO
2
density is set to 00.0, the control is OFF regardless of chamber density.
●
The high limit temperature set value will change when the high limit regulator is turned even if the
incubator is not in setting mode, because the alarm circuit is an independent circuit.
●
In each set mode, the indicator returns to the current temperature and CO
2
density display mode
automatically when 90 seconds has passed without any key operation.
