AEC WD 350 through WD3000 Dehumidifying Dryers - Manual (Page 26)

4 Level 1 Controllers
Your dryer comes with the standard Level 1 control panel or the optional Level 2 control panel.
This chapter discusses the features of each, starting with Level 1 features. Level 2 features
begin in Chapter 5 on Page 33, with a graphic of the Level 2 control panel in Figure 13 on Page
34.
4-1 Level 1 Control Panel Indicator Lights
Control Power On
The
Control Power On indicator lights when the dryer control circuit energizes.
Process Heater On
The
Process Heater On indicator lights when the process air heater energizes.
High Process Air Temperature Alarm
The
High Process Air Temperature alarm indicator lights when the temperature at the process
air thermocouple is above the set high alarm value. When the indicator lights, the alarm relay
energizes and all the heaters turn off while the blower remains on to cool the dryer.
• The alarm mode and value are factory-set to track 25° above the process set point. The
alarm value is a deviation above the process set point, and the user can adjust it.
• When the temperature at the process thermocouple returns to within the acceptable range,
the alarm output de-energizes and all the heaters turn on again automatically.
• You can alter the alarm range. See Section 6-5 on Page 43 for more information.
Regen Heater On
The
Regen Heater On indicator lights when the left or right bed regeneration heater is on.
Left Bed Regenerating and Right Bed Regenerating
The lit
Left Bed Regenerating or Right Bed Regenerating LED indicates the bed currently
being regenerated (off-line).
High Dew Point Alarm (optional)
The
High Dew Point alarm indicator lights when the process air delivery dew point exceeds the
dew point alarm point, factory set at -10°F (-23ºC).
WDMR and WDFR Series Dehumidifying Dryers Page 25