Sanyo MCO-5M - Control Panel Operation

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OPERATING INSTRUCTIONS
Operation of keys on the control panel
Table below shows the basic procedure for setting the chamber temperature, CO
2
and O
2
density. The
upper limit alarm temperature 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 37
o
C, CO
2
density is 5% and O
2
density is 5%. Adjustment of the upper limit regulator should be
executed after the chamber temperature reaches the stable condition.
(The unit is set at the factory so that the chamber temperature is 37
o
C, CO
2
control is 0% and O
2
density
is 20%.)
Allow at least 4 hours until the next setting after setting of desired chamber temperature and setting CO
2
density to 0%, at the time of first start-up or start-up after no use for long period.
Basic operation (Example: Chamber temperature; 37
o
C, CO
2
density; 5% O
2
density; 5%)
Description of operation Key operated Indication after operation
1 Turn the power switch ON. ----
The current chamber temperature is displayed
in temperature indicator.
2 Press SET key. SET
The left digit is flashed.
When pressed, the changeable digit is shifted.
3
By pressing digit shift key and
numerical value shift key, set the
figure to 37.0.
When pressed, the figure of settable digit changes.
4 Press ENT key. ENT
Set temperature is memorized.
Left digit in CO
2
density indicator is
flashed.
When pressed, the changeable digit is shifted.
5
By pressing digit shift key and
numerical value shift key, set the
figure to 05.0.
When pressed, the figure of settable digit changes.
6 Press ENT key. ENT
Set CO
2
density is memorized, and
Left digit in O
2
density indicator is
flashed.
When pressed, the changeable digit is shifted.
7
By pressing digit shift key and
numerical value shift key, set the
figure to 05.0.
When pressed, the figure of settable digit changes.
8 Press ENT key. ENT Set O
2
density is memorized.
9
(Executed after the chamber
temperature reaches the stable
condition)
Adjust upper limit regulator so that
the alarm temp. is 1
o
C higher than
chamber temperature.
In CO
2
density indicator, HI is displayed.
In temperature indicator, upper limit temp. is
displayed. The upper limit temp. can be changed
by turning upper limit regulator.
10 Press ENT key. ENT
This is the end of set mode and the indicators
display current temperature and density.
• In each set mode, if the change of the setting is not necessary, pressing SET key skips to next set
mode.
• When the CO
2
density is set to 00.0% and O
2
density is set between 18.1 and 21.9%, the control is OFF
regardless of the chamber atmosphere.
• The upper limit temperature set value will change when the regulator is turned even if the unit is not in
set mode, because the alarm circuit is an independent circuit.
• In each set mode, the indicator returns to the current temperature and density display mode
automatically when 90 seconds has passed without any key operation.
• The setting of CO
2
density is 70% in maximum when the setting of CO
2
density is higher than 10.1%. And,
the setting of CO
2
density is 10% in maximum when the setting of O
2
density is 70.1%.
• Always ventilate the chamber when changing to CO
2
control only from O
2
control.