DA2 Series Dehumidifier Owners Manual
Operation
32 Dectron, Inc. November 2009
Data subject to change without notice.
The unit is intended to dehumidify and de-fog ice rinks. It is intended to run when the remote enable switch is on
and when the room relative humidity is above set point, and when the room temperature is between 35°F (1.7°C)
and 80°F (27°C).
The unit actually freezes moisture out of the air. The coils are designed for frost buildup. An automatic defrost
cycle begins after a certain amount of time with the suction-line temperature below 28°F (-2.2°C). During defrost
mode the compressor will run without the blower running.
Defrost mode terminates when the suction-line temperature rises above 50°F (10°C). This allows normal opera-
tion to resume.
Electric power should be applied to the unit at all times, in order to heat the oil and prevent its dilution by
refrigerant. Unit operation is enabled by turning on the remote ENABLE switch, by others. There may be a five-
minute delay between enabling and the blower starting. Both units in a pair should start near the same time.
Enable the units one to two hours before the ice rink is to used, and leave them running continuously during the
active period or whenever high humidity is a problem.
Do not allow the condensate line to freeze.