Shellab BACTROX - Manual (Page 8)

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Bactrox Operations Manual 8
4. CONTROL PANEL OVERVIEW
4.1 POWER: The I/O (ON/OFF) switch controls all of the power for the chamber and must be in the
I/ON position before any systems are operational. Both
“SET TEMPERATURE” “SETO2 %” and
“SET CO2 %” displays will illuminate when the power switch is in the ON position.
4.2 SET TEMPERATURE: This controll er is marked “SET TEMPERATURE” and indicates the
actual temperature within the chamber to 0.1°C. The UP/DOWN buttons are used for inputting
the set point, calibrating the display, and muting or unmuting the audible alarm. The HIGH and
LOW alarm indicators will light whenever there is an alarm condition associated with the
temperature within the chamber. The MUTE indicator will light whenever the audible alarm has
been deactivated.
4.3 HEATING ACTIVATED LIGHT Heating activated light will be lit whenever the main incubator
heating element is on.
4.4 SET OVER TEMPERATURE: This is a hydraulic thermostat that is wired between the Main
temperature controller and the heating element and functions as an override control. During
normal operation, if at any time the
“SET Temperature” control fails in the ON position, and the
temperature in the incubator rises above its set point, the “SET OVER TEMPERATURE” is
activated and maintains temperature at its own set point. Note that the HEATING ACTIVATED
LIGHT indicator will not continue to function while overridden by Over Temperature Limit.
4.5 OVER TEMPERATURE ACTIVATED LIGHT: This pilot lamp is on whenever the “SET OVER
TEMPERATURE” safety thermostat has been activated and taken control of the heating
element. During normal operating conditions this indicator should never be on.
4.6 OXYGEN CONTROL: This controller is marked “SET OXYGEN %” and indicates the
percentage of O
2
content within the chamber to 0.1%. The UP/DOWN buttons are used to input
the set point, calibrating the display, and muting or unmuting the audible alarm. The HIGH and
LOW alarm indicators will light whenever there is an alarm condition associated with the O
2
%
within the chamber. The MUTE indicator will light whenever the audible alarm has been
deactivated.
4.7 N2 INJECTING: This pilot lamp is on whenever the oxygen control has been activated and is
actively injecting N2 gas via the solenoid valve.
4.8 AIR INJECTING: This pilot lamp is on whenever the oxygen control has been activated and is
actively injecting air via the solenoid valve associated with the air supply pump.
4.9 CO
2
CONTROL: This controller is marke d “SET CO
2
%” and indicates the percentage of CO
2
content within the chamber to 0.1%. The UP/DOWN buttons are used to input the set point,
calibrating the display, and muting or unmuting the audible alarm. The HIGH and LOW alarm
indicators will light whenever there is an alarm condition associated with the CO
2
% within the
chamber. The MUTE indicator will light whenever the audible alarm has been deactivated.
4.10 CO2 INJECTING: This pilot lamp is on whenever the Carbon Dioxide control has been
activated and is actively injecting CO
2
gas via the solenoid valve.
4.11 PASS BOX CONTROL: The “START PASS BOX PURGE” button when engaged will actively
initiate a PASS BOX purging cycle. The cycle time is ~45 seconds.
4.12 PASS BOX PURGING: This pilot light is on whenever the PASS BOX PURGE button has been
pressed. The light will blink for the duration of the ~45 second cycle.
4.13 RS232: Electrical connection for data logging and or calibration of the Oxygen, Carbon Dioxide
and Temperature controls.
5. HOSE AND ELECTRICAL CONNECTIONS
5.1 A supply hose connects from the N2 PORT fitting to a N
2
tank and regulator (CGA 580).
5.2 A supply hose connects from the CO2 PORT fitting to a CO
2
tank and regulator (CGA 320).
5.3 N
2
and CO
2
Regulator Considerations:
5.3.1 Ensure that you are using a dual stage regulator CGA 580 for N2 and CGA 320 for
CO
2
. It is highly recommended that a good quality 0-60 PSI output range DUAL
STAGE pressure regulator be used on the N
2
tank and CO
2
tanks. The dual stage
regulator will have two pressure gauges. The high pressure gauge (0-4000 PSI) will
indicate the pressure within the tank. The low pressure gauge (0-60 PSI) will indicate
the output pressure on the supply hose to the chamber. Single stage regulators do
not provide as stable performance as dual stage.