188
Flow and Pressure Diagram, CSR, Dehumidification
NOTE: At setpoints below 5 C (41 F), the dehumidification is not energized.
29. Coil/Dehumidify Solenoid Valve (DSV)
Is a normally open valve.
If the container humidity is 2% or more above the humidity setpoint, the temperature is
in-range and the Cooling Capacity in the Data menu display is 85% or less; the controller
will energize (close) the normally open solenoid. This closes refrigerant distribution to
50% of the evaporator coil, thereby lowering the temperature of the active part of the coil
and condensing more moisture from the container air.
22. Electric Heaters
If the container humidity is 5% or more above the humidity setpoint, the temperature is
in-range and the Cooling Capacity in the Data menu display is 70% or less; the controller
will pulse the electric heaters on and off in addition to energizing (closing) the
dehumidify solenoid valve. This increases the cooling load on the evaporator coil,
thereby lowering the temperature of the entire coil and condensing more moisture from
the container air.
30. Humidity Sensor (rH) (Option)
The humidity sensor is located at the top right hand side of the evaporator fan deck and
measures the humidity of the return air from the cargo space.
High Pressure Gas
High Pressure Liquid
Low Pressure Gas
Low Pressure Liquid
Condensing High Pressure Gas
Low Pressure Vaporizing Liquid
Liquid Refrigerant Injection
AXA0266
AXA0265
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