4.If either the left or right bed safety temperature switch opens, a regen heater fault is generated. “HIGH TEMP” is displayed on the relay screen. The alarm light is activated.

5.If the process temperature controller faults or the process heater safety switch opens, a heater fault is generated. “HIGH TEMP” is displayed on the relay screen. The alarm light is activated. The process heater, regen heater, and process/regen blower are turned off. (Requires turning the dryer OFF).

6.If the process blower overloads trips, a process blower fault is generated. “PROC BLWR” is displayed on the relay screen. The alarm light is activated. The process heater, regen heater, and process/regen blower are turned off (3 phase only).

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 verifies position is high, the right bed is activated. When the cam verifies position is low, the left bed is activated. Each heater is ON-OFF controlled.

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.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.

12.The dryer is shut off by turning the control power switch to the OFF position.

13.Refer to Schematic drawing 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!

15, 30, & 60 cfm Compact Dryers

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Sterling 882.00291.00 specifications Alarm Display Messages
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882.00291.00 specifications

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