ZEKS CFX NC Series, Technical Manual

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The alarm names and a brief description of each are described in detail below.
Note that some alarms will enunciate only after a prescribed alarm delay. Refer to
the TECHNICIAN MODE section of this manual for factory default alarm delay
periods.
HIGH TEMPERATURE ALARM (HITEMP ALARM)
When the air temperature at the inlet to the separator reaches the factory alarm set
point, after an alarm delay, the alarm will be activated. This alarm condition that
may not necessarily damage the dryer when subjected to long-term exposure. It
may, however, have a significant impact on downstream processes and thus should
be investigated upon detection. Note that this alarm will not shut down the dryer.
This alarm will reset automatically once the alarm condition is rectified.
LOW TEMPERATURE SAFETY ALARM (LOWTEMP ALARM)
If the dryer chiller temperature falls below the factory set point and remains below
this set point for the alarm delay time, the alarm routine will activate. This alarm
condition may cause damage to the dryer when subjected to continuous or long-
term exposure. Note that this alarm will shut down the dryer after a response time
delay. This alarm will reset automatically once the alarm condition is rectified.
HIGH PRESSURE CUTOUT ALARM (HI PRESS CO)
If the discharge pressure of the refrigerant is determined to be above the set point,
the alarm routine will activate. This alarm condition may cause damage to the
dryer when subjected to continuous or long-term exposure. Note that this alarm will
shut down the dryer after a response time delay. The operator must depress the
RESET button in order to clear the alarm and restart the refrigeration system.
Alarm Display Alarm Set Point
HIGH PRESSURE CUTOUT HI PRESS CO See Table 1
HIGH TEMPERATURE ALARM HITEMP ALRM 55 °F
LOW TEMPERATURE ALARM LOTEMP ALRM 30 °F
HIGH DRAIN LEVEL ALARM DRAIN LVL ALARM N/A
6.5.5 ALARMS AND THEIR FUNCTIONS
There are several alarms detected by the DPC™ to alert the user of an out of
tolerance condition. Once each alarm is detected, a description of the alarm will
appear in the screen and the remote alarm contact will close. Note that during the
alarm condition, the SELECT DISPLAY button may be depressed to scroll through
the available parameters. After approximately 30 seconds, the alarm screen will
reappear, provided the alarm condition persists.