Forma Scientific 3546 - 3.17 Setting the CO2 Content

Forma Scientific, Inc.__________________________________________Installation/Start-up
3-15
Check the CO
2
at the Desired Setpoint
 Allow the incubator to reach setpoint and control (inject light will cycle) for a
minimum of 30 minutes.
 Check the CO
2
level with a FYRITE until two consecutive readings agree. If the
FYRITE and display are not within plus or minus 1.0%, consult the factory.
Note: After proper zeroing, the CO
2
display will be more accurate than the FYRITE,
because the zero adjustment was accomplished using absolute.
3.17 Setting the CO
2
Content
The following conditions must be satisfied before the CO
2
percentage can be set:
Allow temperature and humidity in chamber to stabilize. For initial settings of CO
2
, it
is recommended that temperature and humidity be allowed to stabilize for three days.
Check the CO
2
control zero (See Section 3.16 for detailed instructions).
To set the CO
2
percentage, press the CO
2
SET/SILENCE button, and rotate the CO
2
set screw until the desired percentage is indicated on the digital display.
Note: If the unit is in overtemp and a CO
2
injection occurs, a brief, high CO
2
percentage will appear on the digital display due to the shut down of the
internal fan during overtemp. The high CO
2
percentage occurs only at the
sensor. CO
2
throughout the chamber will remain normal.
Figure 3-7
CO
2
Control Module