Shellab SCO31 - Manual (Page 27)

27 | P a g e
OPERATION (CONTINUED)
M
UTING THE
A
UDIBLE
T
EMPERATURE
A
LARM
An audible and visual high or low deviation alarm will activate if the incubator chamber temperature
deviates by 1
°C above or below the temperature set point. The low deviation alarm has a delay of
fifteen minutes. This delay prevents the low alarm from activating whenever the doors are opened,
causing a brief drop in temperature.
1. To mute an active high or low deviation alarm, press and hold either the Up or Down arrow
on the Temperature Control sub-panel, until the amber Mute LED illuminates and the
audible alarm shuts off.
2. The alarm will remain muted for the duration of the current temperature deviation, tough
the alarm and Mute indicators will remain illuminated. .
3. Any new deviation greater than 1 °C will reactivate the audible alarm.
S ET THE CO
2
S ET P OINT
After the unit’s temperature has been calibrated and the Over Temperature Limit set, enter a CO
2
set point (concentration level) for the incubation chamber atmosphere:
1. Turn on the supply to the incubator CO
2
. The supply should deliver 20 psi at the external
inline HEPA filter.
2. Press either the Up or Down arrow button on the CO
2
Control sub-panel.
a. The display will dim and begin to blink, showing the adjustable CO
2
set
point.
b. A flashing “OFF” my show if the display was set to off.
3. Use the arrow buttons adjust the set point to your application’s required CO
2
concentration.
a. Note that if the buttons are not pushed for five (5) seconds, the display will
revert to showing the current CO
2
level, with the last value in the display saved
as the new CO
2
set point.
4. After selecting a CO
2
set point, wait five seconds.
a. The display will brighten and cease flashing.
b. Your set point is now saved in the CO
2
controller, and the incubator will now
begin adjusting to reach the set point.