Control System; Direct Heat Control Inputs & Outputs - NuAire NU-5510 Operation And Maintenance Manual

Condensation on the glass door, walls, top, or bottom of the chamber indicates an incorrect balance of door
and front perimeter heat. Both the door and front perimeter heaters operate on a duty cycle. A good
starting point for these duty cycles is the default setting for the door & perimeter heaters in a room ambient
temp of 22ºC (72ºF) at a temperature set point of 37.0ºC. The fresh airflow that the air pump delivers to
the chamber has been preset at the factory. If condensation starts forming on the sides or backwall in the
chamber, the number and length of air injections into the chamber can be increased. (See section 8.8.1.2
for instructions.) To alleviate the condensation, increase the airflow. To increase RH in the chamber
reduce the airflow. If airflow is decreased, some condensation may be unavoidable. The port plug with
breather hole must be used on the back port. DO NOT SEAL THE OPENING IN THE PORT PLUG
EXCEPT WHERE INSTRUCTED TO DO SO. THIS IS A PRESSURE RELIEF FOR THE
DECON CYCLES.
8.3

Control System

The NuAire Incubator Control Electronics system is designed to serve the control requirements of the
Incubator chamber. Temperature and CO
conditions for culture growth within a chamber. Operator input is coordinated through the control panel
keypad and status displays. Figure 1 shows the various inputs and outputs of the system.
OM0135
levels are controlled by preset values to provide the optimum
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Figure 1: Direct Heat Control Inputs & Outputs
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