AEC AD Series Operation And Installation Manual page 45

7.) The valve position limit switch enables the right bed heater and
provides an input signal to the programmable relay when
actuated by the cam lobe. When the cam lobe position is high,
the right bed is activated. When the cam lobe position is low,
the left bed is activated. Each heater is ON-OFF controlled by
the OMRON E5C2 controller.
8.) Upon completion of the HEAT portion of the regeneration
sequence, the regen heaters are disabled by the programmable
relay and the COOL time begins.
9.) Once the Cool time has expired, the valve motor is turned on
until the cam switch makes a transition. Upon making a
transition, the timing sequence is restarted for the new bed.
10.) When no fault conditions exist, the display reads "SYSTEM
NORMAL".
11.) When a dew point fault is generated by the optional dew point
controller, the alarm light will activate. The alarm light will
flash, indicating a non-critical fault. Press Alarm Reset to
deactivate the alarm until the next dew point fault occurs.
12.) The top 2 lines of the display show the HEAT and COOL
times (in minutes) for the regeneration sequence. Changes to
these times can be made by the operator as follows:
12-1. Press the up or down arrow until the cursor is
12-2. Press the "+" key to increment the number, or the "-"
12-3. Press the "OK" key to accept the value and write to the
OR
12-4. Press the "ESC" key to cancel the changes.
***Note that a change will NOT take effect until step 12-3 is
done.
13.) The dryer is shut off by turning the control power switch to the
OFF position.
14.) Refer to Schematic drawing A0566087 enclosed in the control
enclosure.
AD Series Dehumidifying Dryers
positioned at the number to be changed.
key to decrement the number.
relay memory.
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