NuAire NU-5710, Руководство по эксплуатации и обслуживанию

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OM0249 Page 33 of 64
Rev 4 June/2020
The following paragraphs provide a more complete description of the Optional configuration parameters listed above.
Temperature
1. Maximum Above Set point
This value determines the maximum deviation, measured in ( ° C) that the chamber is permitted to rise above set
point, once it is reached before an alarm condition is declared. An alarm condition will cause the chamber to enter
a safe condition where no power is enabled to any of the system output controls until the situation is rectified.
2. Temp Time Out
This value determines the time, in minutes, for the temperature to achieve set point. If the temperature doesn't
get to within 0.2° of set point within this time period, an alarm condition is declared.
3. Minimum Below Set point
This value determines the maximum deviation, measured in (°C) that the chamber is permitted to fall below set
point, once it is reached before an alarm condition is declared.
4. Temp Sensor Differential
This value specifies a maximum differential, measured in temperature ( ° C) that the two temperature sensors may
deviate from one another, or from the last read value. If this differential is exceeded, a warning LED is shown on
the running chamber. If multiple sensors fail to read within the specified limits, an alarm condition is declared. An
alarm condition will cause the chamber to enter a safe condition where no power is enabled to any of the system
output controls until the situation is rectified.
5. Recovery Delay Time
This value determines the time, in seconds, to turn off the chamber heaters in half-degree increments during a
temperature recovery cycle. The delay time is required to prevent temperature overshoot of the control set point.
CO
2
1. CO₂ System Enable ( Enabled/ disabled) Is located in the bottom right of the screen
This function will enable or disable the C O₂ system. If the system is Enabled it will be displayed in the MAIN
screen. If it is disabled it will not be displayed in the Main or Option/Settings screen for the C O₂ system:
System Enabled (with check mark) means the System is enabled
System Enabled (without check mark) indicates that the system is disabled
2. Maximum Above Set point
This value determines the maximum deviation, measured in (%) that the chamber is permitted to rise above set-
point, once it is reached before an alarm condition is declared.
3. CO
2
Time Out Timer
This value determines the time, in minutes, for the CO
2
percentage to achieve set point. If the CO
2
percentage
doesn't get to within its lower limit of set point within this time period an alarm condition is declared. CO2
injections are stopped, and air is injected for 15 minutes incase CO2 was not being detected by the sensor. This
alarm can be cleared through the alarm screens or by opening the inner door.
4. Minimum Below Set Point
This Function gives the ability to set the value in percent C O₂ below set point that starts the C O₂ time out timer
described in item 2.
5. Post Inject Delay Time
This value specifies the time, in seconds, for an injection of CO
2
to be measurable at the sensor. When CO
2
is
injected into the chamber, the system delays until this time period has elapsed before making a new control
decision. In this manner, diffusion induced delays will not cause the CO
2
system to overshoot the control set point.
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