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Reset the motor overload and turn the Off-On-Start switch to the START position to
restart the dryer.
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. 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 horn and
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:
a. Press the up or down arrow until the cursor is positioned at the number to be
changed.
b. Press the “+” key to increment the number, or the “-“ key to decrement the
number.
c. Press the “OK” key to accept the value and write to the relay memory.
OR
d. Press the “ESC” key to cancel the changes.
Note: A change will NOT take effect until step 12-c 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.
Alarm Display Messages
Note: The relay screen which contains the Alarm Display Messages is
located inside the controller enclosure.
WARNING! Do not attempt to check the Alarms on the Controller located within the
unit enclosure unless you are a qualified electrician!
The following is a list of Alarm Display Messages which can be found on the relay screen:
* Turning OFF the dryer clears the Fault/Alarm.
Dehumidifying Dryers Chapter 4: Operation 31 of 53