Heatless Regenerative Desiccant Air Dryer | AHLD Series
29
Alarm Pop-Up Screens
AIRCEL PROGRAMMABLE CONTROLLER (APC)
No Alarm: The normally closed state of the common alarm relay.
Drain Fault: Shows when the relative humidity (EMS) probe is out of range. This can be
either high out of range or low out of range. When this happens, the signal has either
been lost or the sensor may need to be replaced.
Bad RH Probe: Shows when the relative humidity (EMS) probe is out of range. This
can be either high out of range or low out of range. When this happens, the signal has
either been lost or the sensor may need to be replaced.
High Humidity Alarm: Alarm that is visible when the dew point is higher than the
set point. The set point for the high humidity alarm can be changed but it is not
recommended.
Bad Dew-P Probe: Alarm for the dew point sensor probe out of range. The out of range
can be either high or low. This can be either a complete loss of signal/voltage, the
resistor can be disconnected or the sensor may need to be calibrated.
The FTS Alarm (Failure-to-Shift): Alarm present when a vessel does not depressurize
correctly or if a vessel that is to be drying does not have pressure at or above a certain
set pressure.
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