
Any air remaining in the working chamber makes the temperature distribution in the chamber
uneven. This hinders temperature rise (sterilization). To cope with this, a
microcomputer-con-
trolled automatic
exhaust
valve vents virtually
100%
of the
air.
Temperature rises until a set sterilization temperature (pressure) is reached.
After the set sterilization temperature is attained, the
WIEATG
stops flickering and lights up.
Operation proceeds to the next step.
81
Sterilization Cycle
---
Modes
1,
2
and
3
Sterilization
temperature
display
The
STIER.
display goes out
and
starts flickering.
The
set sterilization time is shown in the digital display
upon activation of the
sterilization timer.
[,I
"
Sterilization
lime
display
A
constant temperature (pressure) is maintained
during the set sterilization time period.
If the temperature in the working chamber drops
Temperature
over-drop
ma&
1
"C
or more from the set value due to any trouble, the
temperature over-drop mark appears on the digital display, and the
digital timer operation
is
interrupted. When the set
temperahre is regained, the timer restarts
operation.
The digital timer displays the remaining time during the sterilization cycle. Refer to
"Checking
Set Values during Operation" on page
19
for the method of checking the set time during
operation.
When the preset sterilization time has passed, the
STIER.
display stops flickering and lights up,
and operation
proceeds to the next cycle.
0
In
sterilization of petri dishes or empty containers, the air remaining in the container expands
and may increase the pressure extraordinarily within the
working
chamber. If the pressure in
the
working chamber
exceeds the saturated steam pressure, the automatic exhaust valve opens
and.discharges the air in the
chamber into the exhaust bottle.
Valve Opening Variable Cycle
---
Modes
1
and
2.
The
IEXWT.
display goes out and starts flickering. The digital display indicates the exhaust
%
value.
You can change the exhaust
%
value during the valve opening variable exhaust cycle. To do so,
refer to "Exhaust
%
During the Valve Opening Variable Exhaust Cycle"
on
page
20
-
A
NOTE
If the steam is exhausted abruptly after liquid sterilization, the liquid may gush out. To prevent
this, set the exhaust
%
to
a
small value to gradually exhaust the steam. Or, set that to
0%
(spontaneous cooling).
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