Sterling 350-2100 CFM User Manual

350-2100 cfm Dryers 

Chapter 4: Control Panel 

20 of 58 

 

 

This indicator lights when the process blower is energized. 

This indicator lights when the process air heaters are energized. 

;  This indicator lights when the temperature at the process air thermocouple is above 

the set high alarm value. 

;  When the indicator lights, the alarm relay is energized and all the heaters turn off 

while the blowers remain on. 

;  The alarm mode and value are factory-set to track 25°F above the process setpoint. 

The alarm value is a deviation above the process setpoint.  

; 

When the temperature at the process thermocouple returns to within the acceptable 
range, the alarm output is de-energized and all the heaters turn on again 
automatically.

 

;  The alarm range may be altered - See Section 5-5. 

This indicator lights when the regeneration blower is energized. 

This indicator lights when the regeneration heater is on. 

The indicator lit shows which bed is currently being regenerated [off-line]. 

This indicator lights when the process air delivery dew point exceeds the dew point shift 
point, as set by the adjustment pot on the control enclosure graphic panel. See Section 5-6. 

;  This indicator lights if the pressure differential across either the process air return 

filter or the regeneration inlet filter exceeds the pressure switch setting. 

;  This indicates a filter in need of service. 

;  The light resets automatically when the filter is serviced. 

;  The pressure switch is adjustable - See Section 6-4.  

;  This indicator lights when the temperature at the process air thermocouple is below 

the set low alarm value.