NuAire NU-5710, Руководство по эксплуатации и обслуживанию

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OM0249 Page 39 of 64
Rev 4 June/2020
shell next to the glass door gasket. If calibration is required, simply perform the procedure as stated below. As stated
earlier the door and perimeter heaters operate on a base duty cycle calculated for the chamber temperature set point
being used. In the door and perimeter heater (adjustment) screen “0.0” = the calculated base duty cycle. Adjusting the
value up or down will increase or decrease the percent of power to each heater in 0.1% increments. Small adjustments are
recommended to a maximum of 5.0% at a time.
The following steps should be taken for setting these duty cycle percentages:
•
Allow Incubator to stabilize at its given temperature and humidity level in run mode.
•
Enter the “Environmental Set Points” screen either from the MAIN SCREEN or the SYSTEM SETTINGS screen.
•
Select the numerical digits following the “Door” or “Perimeter” text. Go to the adjustment screen.
•
Press UP or DOWN keys to increase or decrease the numerical value to the desired level. The limits the settings
can be changed to are +50 and -20.
•
Press “Done” to set current value and exit calibration.
•
The reset button for both the door and the perimeter heaters resets the number displayed to 0.0 removing
any adjustment previously made.
Adjusting Door and perimeter heater duty cycles to control condensation:
Location of condensation Adjustment
On the inner glass door Increase the door heater duty cycle in increments no
greater than 5% at a time.
On the inner door gasket Increase the perimeter heater duty cycle in increments no
greater than 5% at a time.
In the back of the chamber First decrease the door heater in increments of no greater
than 5%. If condensation persists and condensation starts
forming on the door then move to reducing the perimeter
heater in the same manor until condensation stops form.
If condensation persists see section 9.3 Setting air injections.
9.3 Setting Air Injections
If there is still some undesired condensation in the chamber when the door and perimeter heaters are set for the desired
result, the air injections can be adjusted. There is a control for length of the air injection labeled, Air Inject Time, and the
frequency that air is injected called, Air Inject Cycle. These controls are described in more detail in the "General Options"