PGW40
Operator Manual
10 September 10, 2020 | 296742-ENG R00
3.6 Airflow
Continuous airflow is critical to the efficient operation of the chamber.
Air is channeled through internal ducting to the Unifloor® into the chamber space. A circulating
loop of conditioned air can also be established to maintain precise environmental conditions within
the chamber. Air is drawn over the refrigeration coil, or heaters and circulated throughout the
chamber. Fresh air may also be introduced, if required.
Figure 3-5
Chamber Airflow
3.7 Aspirator
Located in the growth area, the aspirator houses the sensors used to monitor temperature and
humidity levels within the chamber. The aspirator receives an air sample from the room to
measure and control conditions and provides shielding from the chamber lighting to prevent false
readings caused by radiant energy.
3.8 Lighting Options
The chamber can be equipped with many different lighting configurations. Programmable settings
are in micromoles and the maximum setpoint values will depend on the selected type of light.
3.8.1 Fluorescent Lighting
The standard lighting configuration consists of a combination of fluorescent and halogen
incandescent lamps to provide a balanced spectrum for plant growth. Both lighting types are
independently programmable in steps.
The fluorescent tubes and halogen incandescent lamps are individually replaceable, as required.
